diff options
Diffstat (limited to 'firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/USART')
| -rw-r--r-- | firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/USART/usart.c | 914 | ||||
| -rw-r--r-- | firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/USART/usart.h | 889 |
2 files changed, 0 insertions, 1803 deletions
diff --git a/firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/USART/usart.c b/firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/USART/usart.c deleted file mode 100644 index b95882a..0000000 --- a/firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/USART/usart.c +++ /dev/null @@ -1,914 +0,0 @@ -/* This source file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */ - -/*This file is prepared for Doxygen automatic documentation generation.*/ -/*! \file ********************************************************************* - * - * \brief USART driver for AVR32 UC3. - * - * This file contains basic functions for the AVR32 USART, with support for all - * modes, settings and clock speeds. - * - * - Compiler: IAR EWAVR32 and GNU GCC for AVR32 - * - Supported devices: All AVR32 devices with a USART module can be used. - * - AppNote: - * - * \author Atmel Corporation: http://www.atmel.com \n - * Support and FAQ: http://support.atmel.no/ - * - ******************************************************************************/ - -/* Copyright (c) 2009 Atmel Corporation. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * 3. The name of Atmel may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * 4. This software may only be redistributed and used in connection with an Atmel - * AVR product. - * - * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE - * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR - * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE - * - */ - -#include "compiler.h" -#include "usart.h" - - -//------------------------------------------------------------------------------ -/*! \name Private Functions - */ -//! @{ - - -/*! \brief Checks if the USART is in multidrop mode. - * - * \param usart Base address of the USART instance. - * - * \return \c 1 if the USART is in multidrop mode, otherwise \c 0. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -static __inline__ int usart_mode_is_multidrop(volatile avr32_usart_t *usart) -{ - return ((usart->mr >> AVR32_USART_MR_PAR_OFFSET) & AVR32_USART_MR_PAR_MULTI) == AVR32_USART_MR_PAR_MULTI; -} - - -/*! \brief Calculates a clock divider (\e CD) and a fractional part (\e FP) for - * the USART asynchronous modes to generate a baud rate as close as - * possible to the baud rate set point. - * - * Baud rate calculation: - * \f$ Baudrate = \frac{SelectedClock}{Over \times (CD + \frac{FP}{8})} \f$, \e Over being 16 or 8. - * The maximal oversampling is selected if it allows to generate a baud rate close to the set point. - * - * \param usart Base address of the USART instance. - * \param baudrate Baud rate set point. - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Baud rate successfully initialized. - * \retval USART_INVALID_INPUT Baud rate set point is out of range for the given input clock frequency. - */ -static int usart_set_async_baudrate(volatile avr32_usart_t *usart, unsigned int baudrate, unsigned long pba_hz) -{ - unsigned int over = (pba_hz >= 16 * baudrate) ? 16 : 8; - unsigned int cd_fp = ((1 << AVR32_USART_BRGR_FP_SIZE) * pba_hz + (over * baudrate) / 2) / (over * baudrate); - unsigned int cd = cd_fp >> AVR32_USART_BRGR_FP_SIZE; - unsigned int fp = cd_fp & ((1 << AVR32_USART_BRGR_FP_SIZE) - 1); - - if (cd < 1 || cd > (1 << AVR32_USART_BRGR_CD_SIZE) - 1) - return USART_INVALID_INPUT; - - usart->mr = (usart->mr & ~(AVR32_USART_MR_USCLKS_MASK | - AVR32_USART_MR_SYNC_MASK | - AVR32_USART_MR_OVER_MASK)) | - AVR32_USART_MR_USCLKS_MCK << AVR32_USART_MR_USCLKS_OFFSET | - ((over == 16) ? AVR32_USART_MR_OVER_X16 : AVR32_USART_MR_OVER_X8) << AVR32_USART_MR_OVER_OFFSET; - - usart->brgr = cd << AVR32_USART_BRGR_CD_OFFSET | - fp << AVR32_USART_BRGR_FP_OFFSET; - - return USART_SUCCESS; -} - - -/*! \brief Calculates a clock divider (\e CD) for the USART synchronous master - * modes to generate a baud rate as close as possible to the baud rate - * set point. - * - * Baud rate calculation: - * \f$ Baudrate = \frac{SelectedClock}{CD} \f$. - * - * \param usart Base address of the USART instance. - * \param baudrate Baud rate set point. - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Baud rate successfully initialized. - * \retval USART_INVALID_INPUT Baud rate set point is out of range for the given input clock frequency. - */ -static int usart_set_sync_master_baudrate(volatile avr32_usart_t *usart, unsigned int baudrate, unsigned long pba_hz) -{ - unsigned int cd = (pba_hz + baudrate / 2) / baudrate; - - if (cd < 1 || cd > (1 << AVR32_USART_BRGR_CD_SIZE) - 1) - return USART_INVALID_INPUT; - - usart->mr = (usart->mr & ~AVR32_USART_MR_USCLKS_MASK) | - AVR32_USART_MR_USCLKS_MCK << AVR32_USART_MR_USCLKS_OFFSET | - AVR32_USART_MR_SYNC_MASK; - - usart->brgr = cd << AVR32_USART_BRGR_CD_OFFSET; - - return USART_SUCCESS; -} - - -/*! \brief Selects the SCK pin as the source of baud rate for the USART - * synchronous slave modes. - * - * \param usart Base address of the USART instance. - * - * \retval USART_SUCCESS Baud rate successfully initialized. - */ -static int usart_set_sync_slave_baudrate(volatile avr32_usart_t *usart) -{ - usart->mr = (usart->mr & ~AVR32_USART_MR_USCLKS_MASK) | - AVR32_USART_MR_USCLKS_SCK << AVR32_USART_MR_USCLKS_OFFSET | - AVR32_USART_MR_SYNC_MASK; - - return USART_SUCCESS; -} - - -/*! \brief Calculates a clock divider (\e CD) for the USART ISO7816 mode to - * generate an ISO7816 clock as close as possible to the clock set point. - * - * ISO7816 clock calculation: - * \f$ Clock = \frac{SelectedClock}{CD} \f$. - * - * \param usart Base address of the USART instance. - * \param clock ISO7816 clock set point. - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS ISO7816 clock successfully initialized. - * \retval USART_INVALID_INPUT ISO7816 clock set point is out of range for the given input clock frequency. - */ -static int usart_set_iso7816_clock(volatile avr32_usart_t *usart, unsigned int clock, unsigned long pba_hz) -{ - unsigned int cd = (pba_hz + clock / 2) / clock; - - if (cd < 1 || cd > (1 << AVR32_USART_BRGR_CD_SIZE) - 1) - return USART_INVALID_INPUT; - - usart->mr = (usart->mr & ~(AVR32_USART_MR_USCLKS_MASK | - AVR32_USART_MR_SYNC_MASK | - AVR32_USART_MR_OVER_MASK)) | - AVR32_USART_MR_USCLKS_MCK << AVR32_USART_MR_USCLKS_OFFSET | - AVR32_USART_MR_OVER_X16 << AVR32_USART_MR_OVER_OFFSET; - - usart->brgr = cd << AVR32_USART_BRGR_CD_OFFSET; - - return USART_SUCCESS; -} - - -#if defined(AVR32_USART_400_H_INCLUDED) || \ - defined(AVR32_USART_410_H_INCLUDED) || \ - defined(AVR32_USART_420_H_INCLUDED) || \ - defined(AVR32_USART_440_H_INCLUDED) || \ - defined(AVR32_USART_602_H_INCLUDED) - - -/*! \brief Calculates a clock divider (\e CD) for the USART SPI master mode to - * generate a baud rate as close as possible to the baud rate set point. - * - * Baud rate calculation: - * \f$ Baudrate = \frac{SelectedClock}{CD} \f$. - * - * \param usart Base address of the USART instance. - * \param baudrate Baud rate set point. - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Baud rate successfully initialized. - * \retval USART_INVALID_INPUT Baud rate set point is out of range for the given input clock frequency. - */ -static int usart_set_spi_master_baudrate(volatile avr32_usart_t *usart, unsigned int baudrate, unsigned long pba_hz) -{ - unsigned int cd = (pba_hz + baudrate / 2) / baudrate; - - if (cd < 4 || cd > (1 << AVR32_USART_BRGR_CD_SIZE) - 1) - return USART_INVALID_INPUT; - - usart->mr = (usart->mr & ~AVR32_USART_MR_USCLKS_MASK) | - AVR32_USART_MR_USCLKS_MCK << AVR32_USART_MR_USCLKS_OFFSET; - - usart->brgr = cd << AVR32_USART_BRGR_CD_OFFSET; - - return USART_SUCCESS; -} - - -/*! \brief Selects the SCK pin as the source of baud rate for the USART SPI - * slave mode. - * - * \param usart Base address of the USART instance. - * - * \retval USART_SUCCESS Baud rate successfully initialized. - */ -static int usart_set_spi_slave_baudrate(volatile avr32_usart_t *usart) -{ - usart->mr = (usart->mr & ~AVR32_USART_MR_USCLKS_MASK) | - AVR32_USART_MR_USCLKS_SCK << AVR32_USART_MR_USCLKS_OFFSET; - - return USART_SUCCESS; -} - - -#endif // USART rev. >= 4.0.0 - - -//! @} - - -//------------------------------------------------------------------------------ -/*! \name Initialization Functions - */ -//! @{ - - -void usart_reset(volatile avr32_usart_t *usart) -{ - Bool global_interrupt_enabled = Is_global_interrupt_enabled(); - - // Disable all USART interrupts. - // Interrupts needed should be set explicitly on every reset. - if (global_interrupt_enabled) Disable_global_interrupt(); - usart->idr = 0xFFFFFFFF; - usart->csr; - if (global_interrupt_enabled) Enable_global_interrupt(); - - // Reset mode and other registers that could cause unpredictable behavior after reset. - usart->mr = 0; - usart->rtor = 0; - usart->ttgr = 0; - - // Shutdown TX and RX (will be re-enabled when setup has successfully completed), - // reset status bits and turn off DTR and RTS. - usart->cr = AVR32_USART_CR_RSTRX_MASK | - AVR32_USART_CR_RSTTX_MASK | - AVR32_USART_CR_RSTSTA_MASK | - AVR32_USART_CR_RSTIT_MASK | - AVR32_USART_CR_RSTNACK_MASK | -#ifndef AVR32_USART_440_H_INCLUDED -// Note: Modem Signal Management DTR-DSR-DCD-RI are not included in USART rev.440. - AVR32_USART_CR_DTRDIS_MASK | -#endif - AVR32_USART_CR_RTSDIS_MASK; -} - - -int usart_init_rs232(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz) -{ - // Reset the USART and shutdown TX and RX. - usart_reset(usart); - - // Check input values. - if (!opt || // Null pointer. - opt->charlength < 5 || opt->charlength > 9 || - opt->paritytype > 7 || - opt->stopbits > 2 + 255 || - opt->channelmode > 3 || - usart_set_async_baudrate(usart, opt->baudrate, pba_hz) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - if (opt->charlength == 9) - { - // Character length set to 9 bits. MODE9 dominates CHRL. - usart->mr |= AVR32_USART_MR_MODE9_MASK; - } - else - { - // CHRL gives the character length (- 5) when MODE9 = 0. - usart->mr |= (opt->charlength - 5) << AVR32_USART_MR_CHRL_OFFSET; - } - - usart->mr |= opt->paritytype << AVR32_USART_MR_PAR_OFFSET | - opt->channelmode << AVR32_USART_MR_CHMODE_OFFSET; - - if (opt->stopbits > USART_2_STOPBITS) - { - // Set two stop bits - usart->mr |= AVR32_USART_MR_NBSTOP_2 << AVR32_USART_MR_NBSTOP_OFFSET; - // and a timeguard period gives the rest. - usart->ttgr = opt->stopbits - USART_2_STOPBITS; - } - else - // Insert 1, 1.5 or 2 stop bits. - usart->mr |= opt->stopbits << AVR32_USART_MR_NBSTOP_OFFSET; - - // Set normal mode. - usart->mr = (usart->mr & ~AVR32_USART_MR_MODE_MASK) | - AVR32_USART_MR_MODE_NORMAL << AVR32_USART_MR_MODE_OFFSET; - - // Setup complete; enable communication. - // Enable input and output. - usart->cr = AVR32_USART_CR_RXEN_MASK | - AVR32_USART_CR_TXEN_MASK; - - return USART_SUCCESS; -} - - -int usart_init_rs232_tx_only(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz) -{ - // Reset the USART and shutdown TX and RX. - usart_reset(usart); - - // Check input values. - if (!opt || // Null pointer. - opt->charlength < 5 || opt->charlength > 9 || - opt->paritytype > 7 || - opt->stopbits == 1 || opt->stopbits > 2 + 255 || - opt->channelmode > 3 || - usart_set_sync_master_baudrate(usart, opt->baudrate, pba_hz) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - if (opt->charlength == 9) - { - // Character length set to 9 bits. MODE9 dominates CHRL. - usart->mr |= AVR32_USART_MR_MODE9_MASK; - } - else - { - // CHRL gives the character length (- 5) when MODE9 = 0. - usart->mr |= (opt->charlength - 5) << AVR32_USART_MR_CHRL_OFFSET; - } - - usart->mr |= opt->paritytype << AVR32_USART_MR_PAR_OFFSET | - opt->channelmode << AVR32_USART_MR_CHMODE_OFFSET; - - if (opt->stopbits > USART_2_STOPBITS) - { - // Set two stop bits - usart->mr |= AVR32_USART_MR_NBSTOP_2 << AVR32_USART_MR_NBSTOP_OFFSET; - // and a timeguard period gives the rest. - usart->ttgr = opt->stopbits - USART_2_STOPBITS; - } - else - // Insert 1 or 2 stop bits. - usart->mr |= opt->stopbits << AVR32_USART_MR_NBSTOP_OFFSET; - - // Set normal mode. - usart->mr = (usart->mr & ~AVR32_USART_MR_MODE_MASK) | - AVR32_USART_MR_MODE_NORMAL << AVR32_USART_MR_MODE_OFFSET; - - // Setup complete; enable communication. - // Enable only output as input is not possible in synchronous mode without - // transferring clock. - usart->cr = AVR32_USART_CR_TXEN_MASK; - - return USART_SUCCESS; -} - - -int usart_init_hw_handshaking(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz) -{ - // First: Setup standard RS232. - if (usart_init_rs232(usart, opt, pba_hz) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - // Set hardware handshaking mode. - usart->mr = (usart->mr & ~AVR32_USART_MR_MODE_MASK) | - AVR32_USART_MR_MODE_HARDWARE << AVR32_USART_MR_MODE_OFFSET; - - return USART_SUCCESS; -} - - -int usart_init_modem(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz) -{ - // First: Setup standard RS232. - if (usart_init_rs232(usart, opt, pba_hz) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - // Set modem mode. - usart->mr = (usart->mr & ~AVR32_USART_MR_MODE_MASK) | - AVR32_USART_MR_MODE_MODEM << AVR32_USART_MR_MODE_OFFSET; - - return USART_SUCCESS; -} - - -int usart_init_sync_master(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz) -{ - // Reset the USART and shutdown TX and RX. - usart_reset(usart); - - // Check input values. - if (!opt || // Null pointer. - opt->charlength < 5 || opt->charlength > 9 || - opt->paritytype > 7 || - opt->stopbits == 1 || opt->stopbits > 2 + 255 || - opt->channelmode > 3 || - usart_set_sync_master_baudrate(usart, opt->baudrate, pba_hz) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - if (opt->charlength == 9) - { - // Character length set to 9 bits. MODE9 dominates CHRL. - usart->mr |= AVR32_USART_MR_MODE9_MASK; - } - else - { - // CHRL gives the character length (- 5) when MODE9 = 0. - usart->mr |= (opt->charlength - 5) << AVR32_USART_MR_CHRL_OFFSET; - } - - usart->mr |= opt->paritytype << AVR32_USART_MR_PAR_OFFSET | - opt->channelmode << AVR32_USART_MR_CHMODE_OFFSET; - - if (opt->stopbits > USART_2_STOPBITS) - { - // Set two stop bits - usart->mr |= AVR32_USART_MR_NBSTOP_2 << AVR32_USART_MR_NBSTOP_OFFSET; - // and a timeguard period gives the rest. - usart->ttgr = opt->stopbits - USART_2_STOPBITS; - } - else - // Insert 1 or 2 stop bits. - usart->mr |= opt->stopbits << AVR32_USART_MR_NBSTOP_OFFSET; - - // Set normal mode. - usart->mr = (usart->mr & ~AVR32_USART_MR_MODE_MASK) | - AVR32_USART_MR_MODE_NORMAL << AVR32_USART_MR_MODE_OFFSET | - AVR32_USART_MR_CLKO_MASK; - - // Setup complete; enable communication. - // Enable input and output. - usart->cr = AVR32_USART_CR_RXEN_MASK | - AVR32_USART_CR_TXEN_MASK; - - return USART_SUCCESS; -} - - -int usart_init_sync_slave(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz) -{ - // Reset the USART and shutdown TX and RX. - usart_reset(usart); - - // Check input values. - if (!opt || // Null pointer. - opt->charlength < 5 || opt->charlength > 9 || - opt->paritytype > 7 || - opt->stopbits == 1 || opt->stopbits > 2 + 255 || - opt->channelmode > 3 || - usart_set_sync_slave_baudrate(usart) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - if (opt->charlength == 9) - { - // Character length set to 9 bits. MODE9 dominates CHRL. - usart->mr |= AVR32_USART_MR_MODE9_MASK; - } - else - { - // CHRL gives the character length (- 5) when MODE9 = 0. - usart->mr |= (opt->charlength - 5) << AVR32_USART_MR_CHRL_OFFSET; - } - - usart->mr |= opt->paritytype << AVR32_USART_MR_PAR_OFFSET | - opt->channelmode << AVR32_USART_MR_CHMODE_OFFSET; - - if (opt->stopbits > USART_2_STOPBITS) - { - // Set two stop bits - usart->mr |= AVR32_USART_MR_NBSTOP_2 << AVR32_USART_MR_NBSTOP_OFFSET; - // and a timeguard period gives the rest. - usart->ttgr = opt->stopbits - USART_2_STOPBITS; - } - else - // Insert 1 or 2 stop bits. - usart->mr |= opt->stopbits << AVR32_USART_MR_NBSTOP_OFFSET; - - // Set normal mode. - usart->mr = (usart->mr & ~AVR32_USART_MR_MODE_MASK) | - AVR32_USART_MR_MODE_NORMAL << AVR32_USART_MR_MODE_OFFSET; - - // Setup complete; enable communication. - // Enable input and output. - usart->cr = AVR32_USART_CR_RXEN_MASK | - AVR32_USART_CR_TXEN_MASK; - - return USART_SUCCESS; -} - - -int usart_init_rs485(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz) -{ - // First: Setup standard RS232. - if (usart_init_rs232(usart, opt, pba_hz) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - // Set RS485 mode. - usart->mr = (usart->mr & ~AVR32_USART_MR_MODE_MASK) | - AVR32_USART_MR_MODE_RS485 << AVR32_USART_MR_MODE_OFFSET; - - return USART_SUCCESS; -} - - -int usart_init_IrDA(volatile avr32_usart_t *usart, const usart_options_t *opt, - long pba_hz, unsigned char irda_filter) -{ - // First: Setup standard RS232. - if (usart_init_rs232(usart, opt, pba_hz) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - // Set IrDA filter. - usart->ifr = irda_filter; - - // Set IrDA mode and activate filtering of input. - usart->mr = (usart->mr & ~AVR32_USART_MR_MODE_MASK) | - AVR32_USART_MODE_IRDA << AVR32_USART_MR_MODE_OFFSET | - AVR32_USART_MR_FILTER_MASK; - - return USART_SUCCESS; -} - - -int usart_init_iso7816(volatile avr32_usart_t *usart, const usart_iso7816_options_t *opt, int t, long pba_hz) -{ - // Reset the USART and shutdown TX and RX. - usart_reset(usart); - - // Check input values. - if (!opt || // Null pointer. - opt->paritytype > 1) - return USART_INVALID_INPUT; - - if (t == 0) - { - // Set USART mode to ISO7816, T=0. - // The T=0 protocol always uses 2 stop bits. - usart->mr = AVR32_USART_MR_MODE_ISO7816_T0 << AVR32_USART_MR_MODE_OFFSET | - AVR32_USART_MR_NBSTOP_2 << AVR32_USART_MR_NBSTOP_OFFSET | - opt->bit_order << AVR32_USART_MR_MSBF_OFFSET; // Allow MSBF in T=0. - } - else if (t == 1) - { - // Only LSB first in the T=1 protocol. - // max_iterations field is only used in T=0 mode. - if (opt->bit_order != 0 || - opt->max_iterations != 0) - return USART_INVALID_INPUT; - - // Set USART mode to ISO7816, T=1. - // The T=1 protocol always uses 1 stop bit. - usart->mr = AVR32_USART_MR_MODE_ISO7816_T1 << AVR32_USART_MR_MODE_OFFSET | - AVR32_USART_MR_NBSTOP_1 << AVR32_USART_MR_NBSTOP_OFFSET; - } - else - return USART_INVALID_INPUT; - - if (usart_set_iso7816_clock(usart, opt->iso7816_hz, pba_hz) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - // Set FIDI register: bit rate = selected clock/FI_DI_ratio/16. - usart->fidi = opt->fidi_ratio; - - // Set ISO7816 spesific options in the MODE register. - usart->mr |= opt->paritytype << AVR32_USART_MR_PAR_OFFSET | - AVR32_USART_MR_CLKO_MASK | // Enable clock output. - opt->inhibit_nack << AVR32_USART_MR_INACK_OFFSET | - opt->dis_suc_nack << AVR32_USART_MR_DSNACK_OFFSET | - opt->max_iterations << AVR32_USART_MR_MAX_ITERATION_OFFSET; - - // Setup complete; enable the receiver by default. - usart_iso7816_enable_receiver(usart); - - return USART_SUCCESS; -} - - -#if defined(AVR32_USART_400_H_INCLUDED) || \ - defined(AVR32_USART_410_H_INCLUDED) || \ - defined(AVR32_USART_420_H_INCLUDED) || \ - defined(AVR32_USART_440_H_INCLUDED) || \ - defined(AVR32_USART_602_H_INCLUDED) - - -int usart_init_lin_master(volatile avr32_usart_t *usart, unsigned long baudrate, long pba_hz) -{ - // Reset the USART and shutdown TX and RX. - usart_reset(usart); - - // Check input values. - if (usart_set_async_baudrate(usart, baudrate, pba_hz) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - usart->mr |= AVR32_USART_MR_MODE_LIN_MASTER << AVR32_USART_MR_MODE_OFFSET; // LIN master mode. - - // Setup complete; enable communication. - // Enable input and output. - usart->cr = AVR32_USART_CR_RXEN_MASK | - AVR32_USART_CR_TXEN_MASK; - - return USART_SUCCESS; -} - - -int usart_init_lin_slave(volatile avr32_usart_t *usart, unsigned long baudrate, long pba_hz) -{ - // Reset the USART and shutdown TX and RX. - usart_reset(usart); - - // Check input values. - if (usart_set_async_baudrate(usart, baudrate, pba_hz) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - usart->mr |= AVR32_USART_MR_MODE_LIN_SLAVE << AVR32_USART_MR_MODE_OFFSET; // LIN slave mode. - - // Setup complete; enable communication. - // Enable input and output. - usart->cr = AVR32_USART_CR_RXEN_MASK | - AVR32_USART_CR_TXEN_MASK; - - return USART_SUCCESS; -} - - -int usart_init_spi_master(volatile avr32_usart_t *usart, const usart_spi_options_t *opt, long pba_hz) -{ - // Reset the USART and shutdown TX and RX. - usart_reset(usart); - - // Check input values. - if (!opt || // Null pointer. - opt->charlength < 5 || opt->charlength > 9 || - opt->spimode > 3 || - opt->channelmode > 3 || - usart_set_spi_master_baudrate(usart, opt->baudrate, pba_hz) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - if (opt->charlength == 9) - { - // Character length set to 9 bits. MODE9 dominates CHRL. - usart->mr |= AVR32_USART_MR_MODE9_MASK; - } - else - { - // CHRL gives the character length (- 5) when MODE9 = 0. - usart->mr |= (opt->charlength - 5) << AVR32_USART_MR_CHRL_OFFSET; - } - - usart->mr |= AVR32_USART_MR_MODE_SPI_MASTER << AVR32_USART_MR_MODE_OFFSET | // SPI master mode. - ((opt->spimode & 0x1) ^ 0x1) << AVR32_USART_MR_SYNC_OFFSET | // SPI clock phase. - opt->channelmode << AVR32_USART_MR_CHMODE_OFFSET | // Channel mode. - (opt->spimode >> 1) << AVR32_USART_MR_MSBF_OFFSET | // SPI clock polarity. - AVR32_USART_MR_CLKO_MASK; // Drive SCK pin. - - // Setup complete; enable communication. - // Enable input and output. - usart->cr = AVR32_USART_CR_RXEN_MASK | - AVR32_USART_CR_TXEN_MASK; - - return USART_SUCCESS; -} - - -int usart_init_spi_slave(volatile avr32_usart_t *usart, const usart_spi_options_t *opt, long pba_hz) -{ - // Reset the USART and shutdown TX and RX. - usart_reset(usart); - - // Check input values. - if (!opt || // Null pointer. - opt->charlength < 5 || opt->charlength > 9 || - opt->spimode > 3 || - opt->channelmode > 3 || - usart_set_spi_slave_baudrate(usart) == USART_INVALID_INPUT) - return USART_INVALID_INPUT; - - if (opt->charlength == 9) - { - // Character length set to 9 bits. MODE9 dominates CHRL. - usart->mr |= AVR32_USART_MR_MODE9_MASK; - } - else - { - // CHRL gives the character length (- 5) when MODE9 = 0. - usart->mr |= (opt->charlength - 5) << AVR32_USART_MR_CHRL_OFFSET; - } - - usart->mr |= AVR32_USART_MR_MODE_SPI_SLAVE << AVR32_USART_MR_MODE_OFFSET | // SPI slave mode. - ((opt->spimode & 0x1) ^ 0x1) << AVR32_USART_MR_SYNC_OFFSET | // SPI clock phase. - opt->channelmode << AVR32_USART_MR_CHMODE_OFFSET | // Channel mode. - (opt->spimode >> 1) << AVR32_USART_MR_MSBF_OFFSET; // SPI clock polarity. - - // Setup complete; enable communication. - // Enable input and output. - usart->cr = AVR32_USART_CR_RXEN_MASK | - AVR32_USART_CR_TXEN_MASK; - - return USART_SUCCESS; -} - - -#endif // USART rev. >= 4.0.0 - - -//! @} - - -//------------------------------------------------------------------------------ -#if defined(AVR32_USART_400_H_INCLUDED) || \ - defined(AVR32_USART_410_H_INCLUDED) || \ - defined(AVR32_USART_420_H_INCLUDED) || \ - defined(AVR32_USART_440_H_INCLUDED) || \ - defined(AVR32_USART_602_H_INCLUDED) - - -/*! \name SPI Control Functions - */ -//! @{ - - -int usart_spi_selectChip(volatile avr32_usart_t *usart) -{ - // Force the SPI chip select. - usart->cr = AVR32_USART_CR_RTSEN_MASK; - - return USART_SUCCESS; -} - - -int usart_spi_unselectChip(volatile avr32_usart_t *usart) -{ - int timeout = USART_DEFAULT_TIMEOUT; - - do - { - if (!timeout--) return USART_FAILURE; - } while (!usart_tx_empty(usart)); - - // Release the SPI chip select. - usart->cr = AVR32_USART_CR_RTSDIS_MASK; - - return USART_SUCCESS; -} - - -//! @} - - -#endif // USART rev. >= 4.0.0 - - -//------------------------------------------------------------------------------ -/*! \name Transmit/Receive Functions - */ -//! @{ - - -int usart_send_address(volatile avr32_usart_t *usart, int address) -{ - // Check if USART is in multidrop / RS485 mode. - if (!usart_mode_is_multidrop(usart)) return USART_MODE_FAULT; - - // Prepare to send an address. - usart->cr = AVR32_USART_CR_SENDA_MASK; - - // Write the address to TX. - usart_bw_write_char(usart, address); - - return USART_SUCCESS; -} - - -int usart_write_char(volatile avr32_usart_t *usart, int c) -{ - if (usart_tx_ready(usart)) - { - usart->thr = (c << AVR32_USART_THR_TXCHR_OFFSET) & AVR32_USART_THR_TXCHR_MASK; - return USART_SUCCESS; - } - else - return USART_TX_BUSY; -} - - -int usart_putchar(volatile avr32_usart_t *usart, int c) -{ - int timeout = USART_DEFAULT_TIMEOUT; - - if (c == '\n') - { - do - { - if (!timeout--) return USART_FAILURE; - } while (usart_write_char(usart, '\r') != USART_SUCCESS); - - timeout = USART_DEFAULT_TIMEOUT; - } - - do - { - if (!timeout--) return USART_FAILURE; - } while (usart_write_char(usart, c) != USART_SUCCESS); - - return USART_SUCCESS; -} - - -int usart_read_char(volatile avr32_usart_t *usart, int *c) -{ - // Check for errors: frame, parity and overrun. In RS485 mode, a parity error - // would mean that an address char has been received. - if (usart->csr & (AVR32_USART_CSR_OVRE_MASK | - AVR32_USART_CSR_FRAME_MASK | - AVR32_USART_CSR_PARE_MASK)) - return USART_RX_ERROR; - - // No error; if we really did receive a char, read it and return SUCCESS. - if (usart_test_hit(usart)) - { - *c = (usart->rhr & AVR32_USART_RHR_RXCHR_MASK) >> AVR32_USART_RHR_RXCHR_OFFSET; - return USART_SUCCESS; - } - else - return USART_RX_EMPTY; -} - - -int usart_getchar(volatile avr32_usart_t *usart) -{ - int c, ret; - - while ((ret = usart_read_char(usart, &c)) == USART_RX_EMPTY); - - if (ret == USART_RX_ERROR) - return USART_FAILURE; - - return c; -} - - -void usart_write_line(volatile avr32_usart_t *usart, const char *string) -{ - while (*string != '\0') - usart_putchar(usart, *string++); -} - - -int usart_get_echo_line(volatile avr32_usart_t *usart) -{ - int rx_char; - int retval = USART_SUCCESS; - - while (1) - { - rx_char = usart_getchar(usart); - if (rx_char == USART_FAILURE) - { - usart_write_line(usart, "Error!!!\n"); - retval = USART_FAILURE; - break; - } - if (rx_char == '\x03') - { - retval = USART_FAILURE; - break; - } - usart_putchar(usart, rx_char); - if (rx_char == '\r') - { - usart_putchar(usart, '\n'); - break; - } - } - - return retval; -} - - -//! @} diff --git a/firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/USART/usart.h b/firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/USART/usart.h deleted file mode 100644 index bc1c100..0000000 --- a/firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/USART/usart.h +++ /dev/null @@ -1,889 +0,0 @@ -/* This header file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */ - -/*This file is prepared for Doxygen automatic documentation generation.*/ -/*! \file ********************************************************************* - * - * \brief USART driver for AVR32 UC3. - * - * This file contains basic functions for the AVR32 USART, with support for all - * modes, settings and clock speeds. - * - * - Compiler: IAR EWAVR32 and GNU GCC for AVR32 - * - Supported devices: All AVR32 devices with a USART module can be used. - * - AppNote: - * - * \author Atmel Corporation: http://www.atmel.com \n - * Support and FAQ: http://support.atmel.no/ - * - ******************************************************************************/ - -/* Copyright (c) 2009 Atmel Corporation. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * 3. The name of Atmel may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * 4. This software may only be redistributed and used in connection with an Atmel - * AVR product. - * - * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE - * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR - * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE - * - */ - -#ifndef _USART_H_ -#define _USART_H_ - -#include <avr32/io.h> -#include "compiler.h" - - -/*! \name Return Values - */ -//! @{ -#define USART_SUCCESS 0 //!< Successful completion. -#define USART_FAILURE -1 //!< Failure because of some unspecified reason. -#define USART_INVALID_INPUT 1 //!< Input value out of range. -#define USART_INVALID_ARGUMENT -1 //!< Argument value out of range. -#define USART_TX_BUSY 2 //!< Transmitter was busy. -#define USART_RX_EMPTY 3 //!< Nothing was received. -#define USART_RX_ERROR 4 //!< Transmission error occurred. -#define USART_MODE_FAULT 5 //!< USART not in the appropriate mode. -//! @} - -//! Default time-out value (number of attempts). -#define USART_DEFAULT_TIMEOUT 10000 - -/*! \name Parity Settings - */ -//! @{ -#define USART_EVEN_PARITY AVR32_USART_MR_PAR_EVEN //!< Use even parity on character transmission. -#define USART_ODD_PARITY AVR32_USART_MR_PAR_ODD //!< Use odd parity on character transmission. -#define USART_SPACE_PARITY AVR32_USART_MR_PAR_SPACE //!< Use a space as parity bit. -#define USART_MARK_PARITY AVR32_USART_MR_PAR_MARK //!< Use a mark as parity bit. -#define USART_NO_PARITY AVR32_USART_MR_PAR_NONE //!< Don't use a parity bit. -#define USART_MULTIDROP_PARITY AVR32_USART_MR_PAR_MULTI //!< Parity bit is used to flag address characters. -//! @} - -/*! \name Stop Bits Settings - */ -//! @{ -#define USART_1_STOPBIT AVR32_USART_MR_NBSTOP_1 //!< Use 1 stop bit. -#define USART_1_5_STOPBITS AVR32_USART_MR_NBSTOP_1_5 //!< Use 1.5 stop bits. -#define USART_2_STOPBITS AVR32_USART_MR_NBSTOP_2 //!< Use 2 stop bits (for more, just give the number of bits). -//! @} - -/*! \name Channel Modes - */ -//! @{ -#define USART_NORMAL_CHMODE AVR32_USART_MR_CHMODE_NORMAL //!< Normal communication. -#define USART_AUTO_ECHO AVR32_USART_MR_CHMODE_ECHO //!< Echo data. -#define USART_LOCAL_LOOPBACK AVR32_USART_MR_CHMODE_LOCAL_LOOP //!< Local loopback. -#define USART_REMOTE_LOOPBACK AVR32_USART_MR_CHMODE_REMOTE_LOOP //!< Remote loopback. -//! @} - -#if defined(AVR32_USART_400_H_INCLUDED) || \ - defined(AVR32_USART_410_H_INCLUDED) || \ - defined(AVR32_USART_420_H_INCLUDED) || \ - defined(AVR32_USART_440_H_INCLUDED) || \ - defined(AVR32_USART_602_H_INCLUDED) - -/*! \name LIN Node Actions - */ -//! @{ -#define USART_LIN_PUBLISH_ACTION AVR32_USART_LINMR_NACT_PUBLISH //!< The USART transmits the response. -#define USART_LIN_SUBSCRIBE_ACTION AVR32_USART_LINMR_NACT_SUBSCRIBE //!< The USART receives the response. -#define USART_LIN_IGNORE_ACTION AVR32_USART_LINMR_NACT_IGNORE //!< The USART does not transmit and does not receive the reponse. -//! @} - -/*! \name LIN Checksum Types - */ -//! @{ -#define USART_LIN_ENHANCED_CHECKSUM 0 //!< LIN 2.0 "enhanced" checksum. -#define USART_LIN_CLASSIC_CHECKSUM 1 //!< LIN 1.3 "classic" checksum. -//! @} - -#endif // USART rev. >= 4.0.0 - - -//! Input parameters when initializing RS232 and similar modes. -typedef struct -{ - //! Set baud rate of the USART (unused in slave modes). - unsigned long baudrate; - - //! Number of bits to transmit as a character (5 to 9). - unsigned char charlength; - - //! How to calculate the parity bit: \ref USART_EVEN_PARITY, \ref USART_ODD_PARITY, - //! \ref USART_SPACE_PARITY, \ref USART_MARK_PARITY, \ref USART_NO_PARITY or - //! \ref USART_MULTIDROP_PARITY. - unsigned char paritytype; - - //! Number of stop bits between two characters: \ref USART_1_STOPBIT, - //! \ref USART_1_5_STOPBITS, \ref USART_2_STOPBITS or any number from 3 to 257 - //! which will result in a time guard period of that length between characters. - //! \note \ref USART_1_5_STOPBITS is supported in asynchronous modes only. - unsigned short stopbits; - - //! Run the channel in testmode: \ref USART_NORMAL_CHMODE, \ref USART_AUTO_ECHO, - //! \ref USART_LOCAL_LOOPBACK or \ref USART_REMOTE_LOOPBACK. - unsigned char channelmode; -} usart_options_t; - -//! Input parameters when initializing ISO7816 mode. -typedef struct -{ - //! Set the frequency of the ISO7816 clock. - unsigned long iso7816_hz; - - //! The number of ISO7816 clock ticks in every bit period (1 to 2047, 0 = disable clock). - //! Bit rate = \ref iso7816_hz / \ref fidi_ratio. - unsigned short fidi_ratio; - - //! How to calculate the parity bit: \ref USART_EVEN_PARITY for normal mode or - //! \ref USART_ODD_PARITY for inverse mode. - unsigned char paritytype; - - //! Inhibit Non Acknowledge:\n - //! - 0: the NACK is generated;\n - //! - 1: the NACK is not generated. - //! - //! \note This bit will be used only in ISO7816 mode, protocol T = 0 receiver. - int inhibit_nack; - - //! Disable successive NACKs. - //! Successive parity errors are counted up to the value in the \ref max_iterations field. - //! These parity errors generate a NACK on the ISO line. As soon as this value is reached, - //! no addititional NACK is sent on the ISO line. The ITERATION flag is asserted. - int dis_suc_nack; - - //! Max number of repetitions (0 to 7). - unsigned char max_iterations; - - //! Bit order in transmitted characters:\n - //! - 0: LSB first;\n - //! - 1: MSB first. - int bit_order; -} usart_iso7816_options_t; - -#if defined(AVR32_USART_400_H_INCLUDED) || \ - defined(AVR32_USART_410_H_INCLUDED) || \ - defined(AVR32_USART_420_H_INCLUDED) || \ - defined(AVR32_USART_440_H_INCLUDED) || \ - defined(AVR32_USART_602_H_INCLUDED) - -//! Input parameters when initializing SPI mode. -typedef struct -{ - //! Set the frequency of the SPI clock (unused in slave mode). - unsigned long baudrate; - - //! Number of bits to transmit as a character (5 to 9). - unsigned char charlength; - - //! Which SPI mode to use. - unsigned char spimode; - - //! Run the channel in testmode: \ref USART_NORMAL_CHMODE, \ref USART_AUTO_ECHO, - //! \ref USART_LOCAL_LOOPBACK or \ref USART_REMOTE_LOOPBACK. - unsigned char channelmode; -} usart_spi_options_t; - -#endif // USART rev. >= 4.0.0 - - -//------------------------------------------------------------------------------ -/*! \name Initialization Functions - */ -//! @{ - -/*! \brief Resets the USART and disables TX and RX. - * - * \param usart Base address of the USART instance. - */ -extern void usart_reset(volatile avr32_usart_t *usart); - -/*! \brief Sets up the USART to use the standard RS232 protocol. - * - * \param usart Base address of the USART instance. - * \param opt Options needed to set up RS232 communication (see \ref usart_options_t). - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Mode successfully initialized. - * \retval USART_INVALID_INPUT One or more of the arguments is out of valid range. - */ -extern int usart_init_rs232(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz); - -/*! \brief Sets up the USART to use the standard RS232 protocol in TX-only mode. - * - * Compared to \ref usart_init_rs232, this function allows very high baud rates - * (up to \a pba_hz instead of \a pba_hz / \c 8) at the expense of full duplex. - * - * \param usart Base address of the USART instance. - * \param opt Options needed to set up RS232 communication (see \ref usart_options_t). - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Mode successfully initialized. - * \retval USART_INVALID_INPUT One or more of the arguments is out of valid range. - * - * \note The \c 1.5 stop bit is not supported in this mode. - */ -extern int usart_init_rs232_tx_only(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz); - -/*! \brief Sets up the USART to use hardware handshaking. - * - * \param usart Base address of the USART instance. - * \param opt Options needed to set up RS232 communication (see \ref usart_options_t). - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Mode successfully initialized. - * \retval USART_INVALID_INPUT One or more of the arguments is out of valid range. - * - * \note \ref usart_init_rs232 does not need to be invoked before this function. - */ -extern int usart_init_hw_handshaking(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz); - -/*! \brief Sets up the USART to use the modem protocol, activating dedicated inputs/outputs. - * - * \param usart Base address of the USART instance. - * \param opt Options needed to set up RS232 communication (see \ref usart_options_t). - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Mode successfully initialized. - * \retval USART_INVALID_INPUT One or more of the arguments is out of valid range. - */ -extern int usart_init_modem(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz); - -/*! \brief Sets up the USART to use a synchronous RS232-like protocol in master mode. - * - * \param usart Base address of the USART instance. - * \param opt Options needed to set up RS232 communication (see \ref usart_options_t). - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Mode successfully initialized. - * \retval USART_INVALID_INPUT One or more of the arguments is out of valid range. - */ -extern int usart_init_sync_master(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz); - -/*! \brief Sets up the USART to use a synchronous RS232-like protocol in slave mode. - * - * \param usart Base address of the USART instance. - * \param opt Options needed to set up RS232 communication (see \ref usart_options_t). - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Mode successfully initialized. - * \retval USART_INVALID_INPUT One or more of the arguments is out of valid range. - */ -extern int usart_init_sync_slave(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz); - -/*! \brief Sets up the USART to use the RS485 protocol. - * - * \param usart Base address of the USART instance. - * \param opt Options needed to set up RS232 communication (see \ref usart_options_t). - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Mode successfully initialized. - * \retval USART_INVALID_INPUT One or more of the arguments is out of valid range. - */ -extern int usart_init_rs485(volatile avr32_usart_t *usart, const usart_options_t *opt, long pba_hz); - -/*! \brief Sets up the USART to use the IrDA protocol. - * - * \param usart Base address of the USART instance. - * \param opt Options needed to set up RS232 communication (see \ref usart_options_t). - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * \param irda_filter Counter used to distinguish received ones from zeros. - * - * \retval USART_SUCCESS Mode successfully initialized. - * \retval USART_INVALID_INPUT One or more of the arguments is out of valid range. - */ -extern int usart_init_IrDA(volatile avr32_usart_t *usart, const usart_options_t *opt, - long pba_hz, unsigned char irda_filter); - -/*! \brief Sets up the USART to use the ISO7816 T=0 or T=1 smartcard protocols. - * - * The receiver is enabled by default. \ref usart_iso7816_enable_receiver and - * \ref usart_iso7816_enable_transmitter can be called to change the half-duplex - * communication direction. - * - * \param usart Base address of the USART instance. - * \param opt Options needed to set up ISO7816 communication (see \ref usart_iso7816_options_t). - * \param t ISO7816 mode to use (T=0 or T=1). - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Mode successfully initialized. - * \retval USART_INVALID_INPUT One or more of the arguments is out of valid range. - */ -extern int usart_init_iso7816(volatile avr32_usart_t *usart, const usart_iso7816_options_t *opt, int t, long pba_hz); - -#if defined(AVR32_USART_400_H_INCLUDED) || \ - defined(AVR32_USART_410_H_INCLUDED) || \ - defined(AVR32_USART_420_H_INCLUDED) || \ - defined(AVR32_USART_440_H_INCLUDED) || \ - defined(AVR32_USART_602_H_INCLUDED) - -/*! \brief Sets up the USART to use the LIN master mode. - * - * \param usart Base address of the USART instance. - * \param baudrate Baud rate. - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - */ -extern int usart_init_lin_master(volatile avr32_usart_t *usart, unsigned long baudrate, long pba_hz); - -/*! \brief Sets up the USART to use the LIN slave mode. - * - * \param usart Base address of the USART instance. - * \param baudrate Baud rate. - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - */ -extern int usart_init_lin_slave(volatile avr32_usart_t *usart, unsigned long baudrate, long pba_hz); - -/*! \brief Sets up the USART to use the SPI master mode. - * - * \ref usart_spi_selectChip and \ref usart_spi_unselectChip can be called to - * select or unselect the SPI slave chip. - * - * \param usart Base address of the USART instance. - * \param opt Options needed to set up SPI mode (see \ref usart_spi_options_t). - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Mode successfully initialized. - * \retval USART_INVALID_INPUT One or more of the arguments is out of valid range. - */ -extern int usart_init_spi_master(volatile avr32_usart_t *usart, const usart_spi_options_t *opt, long pba_hz); - -/*! \brief Sets up the USART to use the SPI slave mode. - * - * \param usart Base address of the USART instance. - * \param opt Options needed to set up SPI mode (see \ref usart_spi_options_t). - * \param pba_hz USART module input clock frequency (PBA clock, Hz). - * - * \retval USART_SUCCESS Mode successfully initialized. - * \retval USART_INVALID_INPUT One or more of the arguments is out of valid range. - */ -extern int usart_init_spi_slave(volatile avr32_usart_t *usart, const usart_spi_options_t *opt, long pba_hz); - -#endif // USART rev. >= 4.0.0 - -//! @} - - -//------------------------------------------------------------------------------ -/*! \name Read and Reset Error Status Bits - */ -//! @{ - -/*! \brief Resets the error status. - * - * This function resets the status bits indicating that a parity error, - * framing error or overrun has occurred. The RXBRK bit, indicating - * a start/end of break condition on the RX line, is also reset. - * - * \param usart Base address of the USART instance. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_reset_status(volatile avr32_usart_t *usart) -{ - usart->cr = AVR32_USART_CR_RSTSTA_MASK; -} - -/*! \brief Checks if a parity error has occurred since last status reset. - * - * \param usart Base address of the USART instance. - * - * \return \c 1 if a parity error has been detected, otherwise \c 0. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ int usart_parity_error(volatile avr32_usart_t *usart) -{ - return (usart->csr & AVR32_USART_CSR_PARE_MASK) != 0; -} - -/*! \brief Checks if a framing error has occurred since last status reset. - * - * \param usart Base address of the USART instance. - * - * \return \c 1 if a framing error has been detected, otherwise \c 0. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ int usart_framing_error(volatile avr32_usart_t *usart) -{ - return (usart->csr & AVR32_USART_CSR_FRAME_MASK) != 0; -} - -/*! \brief Checks if an overrun error has occurred since last status reset. - * - * \param usart Base address of the USART instance. - * - * \return \c 1 if a overrun error has been detected, otherwise \c 0. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ int usart_overrun_error(volatile avr32_usart_t *usart) -{ - return (usart->csr & AVR32_USART_CSR_OVRE_MASK) != 0; -} - -#if defined(AVR32_USART_400_H_INCLUDED) || \ - defined(AVR32_USART_410_H_INCLUDED) || \ - defined(AVR32_USART_420_H_INCLUDED) || \ - defined(AVR32_USART_440_H_INCLUDED) || \ - defined(AVR32_USART_602_H_INCLUDED) - -/*! \brief Get LIN Error Status - * - * \param usart Base address of the USART instance. - * - * \retval The binary value of the error field. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ int usart_lin_get_error(volatile avr32_usart_t *usart) -{ - return (usart->csr & (AVR32_USART_CSR_LINSNRE_MASK | - AVR32_USART_CSR_LINCE_MASK | - AVR32_USART_CSR_LINIPE_MASK | - AVR32_USART_CSR_LINISFE_MASK | - AVR32_USART_CSR_LINBE_MASK)) >> AVR32_USART_CSR_LINBE_OFFSET; -} - -#endif // USART rev. >= 4.0.0 - -//! @} - - -//------------------------------------------------------------------------------ -/*! \name ISO7816 Control Functions - */ -//! @{ - -/*! \brief Enables the ISO7816 receiver. - * - * The ISO7816 transmitter is disabled. - * - * \param usart Base address of the USART instance. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_iso7816_enable_receiver(volatile avr32_usart_t *usart) -{ - usart->cr = AVR32_USART_CR_TXDIS_MASK | AVR32_USART_CR_RXEN_MASK; -} - -/*! \brief Enables the ISO7816 transmitter. - * - * The ISO7816 receiver is disabled. - * - * \param usart Base address of the USART instance. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_iso7816_enable_transmitter(volatile avr32_usart_t *usart) -{ - usart->cr = AVR32_USART_CR_RXDIS_MASK | AVR32_USART_CR_TXEN_MASK; -} - -//! @} - - -//------------------------------------------------------------------------------ -#if defined(AVR32_USART_400_H_INCLUDED) || \ - defined(AVR32_USART_410_H_INCLUDED) || \ - defined(AVR32_USART_420_H_INCLUDED) || \ - defined(AVR32_USART_440_H_INCLUDED) || \ - defined(AVR32_USART_602_H_INCLUDED) - -/*! \name LIN Control Functions - */ -//! @{ - -/*! \brief Sets the node action. - * - * \param usart Base address of the USART instance. - * \param action The node action: \ref USART_LIN_PUBLISH_ACTION, - * \ref USART_LIN_SUBSCRIBE_ACTION or - * \ref USART_LIN_IGNORE_ACTION. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_lin_set_node_action(volatile avr32_usart_t *usart, unsigned char action) -{ - usart->linmr = (usart->linmr & ~AVR32_USART_LINMR_NACT_MASK) | - action << AVR32_USART_LINMR_NACT_OFFSET; -} - -/*! \brief Enables or disables the Identifier parity. - * - * \param usart Base address of the USART instance. - * \param parity Whether to enable the Identifier parity: \c TRUE or \c FALSE. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_lin_enable_parity(volatile avr32_usart_t *usart, unsigned char parity) -{ - usart->linmr = (usart->linmr & ~AVR32_USART_LINMR_PARDIS_MASK) | - !parity << AVR32_USART_LINMR_PARDIS_OFFSET; -} - -/*! \brief Enables or disables the checksum. - * - * \param usart Base address of the USART instance. - * \param parity Whether to enable the checksum: \c TRUE or \c FALSE. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_lin_enable_checksum(volatile avr32_usart_t *usart, unsigned char checksum) -{ - usart->linmr = (usart->linmr & ~AVR32_USART_LINMR_CHKDIS_MASK) | - !checksum << AVR32_USART_LINMR_CHKDIS_OFFSET; -} - -/*! \brief Sets the checksum type. - * - * \param usart Base address of the USART instance. - * \param chktyp The checksum type: \ref USART_LIN_ENHANCED_CHEKSUM or - * \ref USART_LIN_CLASSIC_CHECKSUM. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_lin_set_checksum(volatile avr32_usart_t *usart, unsigned char chktyp) -{ - usart->linmr = (usart->linmr & ~AVR32_USART_LINMR_CHKTYP_MASK) | - chktyp << AVR32_USART_LINMR_CHKTYP_OFFSET; -} - -/*! \brief Gets the response data length. - * - * \param usart Base address of the USART instance. - * - * \return The response data length. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ unsigned char usart_lin_get_data_length(volatile avr32_usart_t *usart) -{ - if (usart->linmr & AVR32_USART_LINMR_DLM_MASK) - { - unsigned char data_length = 1 << ((usart->linir >> (AVR32_USART_LINIR_IDCHR_OFFSET + 4)) & 0x03); - if (data_length == 1) - data_length = 2; - return data_length; - } - else - return ((usart->linmr & AVR32_USART_LINMR_DLC_MASK) >> AVR32_USART_LINMR_DLC_OFFSET) + 1; -} - -/*! \brief Sets the response data length for LIN 1.x. - * - * \param usart Base address of the USART instance. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_lin_set_data_length_lin1x(volatile avr32_usart_t *usart) -{ - usart->linmr |= AVR32_USART_LINMR_DLM_MASK; -} - -/*! \brief Sets the response data length for LIN 2.x. - * - * \param usart Base address of the USART instance. - * \param data_length The response data length. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_lin_set_data_length_lin2x(volatile avr32_usart_t *usart, unsigned char data_length) -{ - usart->linmr = (usart->linmr & ~(AVR32_USART_LINMR_DLC_MASK | - AVR32_USART_LINMR_DLM_MASK)) | - (data_length - 1) << AVR32_USART_LINMR_DLC_OFFSET; -} - -/*! \brief Enables or disables the frame slot mode. - * - * \param usart Base address of the USART instance. - * \param frameslot Whether to enable the frame slot mode: \c TRUE or - * \c FALSE. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_lin_enable_frameslot(volatile avr32_usart_t *usart, unsigned char frameslot) -{ - usart->linmr = (usart->linmr & ~AVR32_USART_LINMR_FSDIS_MASK) | - !frameslot << AVR32_USART_LINMR_FSDIS_OFFSET; -} - -/*! \brief Gets the Identifier character. - * - * \param usart Base address of the USART instance. - * - * \return The Identifier character. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ unsigned char usart_lin_get_id_char(volatile avr32_usart_t *usart) -{ - return (usart->linir & AVR32_USART_LINIR_IDCHR_MASK) >> AVR32_USART_LINIR_IDCHR_OFFSET; -} - -/*! \brief Sets the Identifier character. - * - * \param usart Base address of the USART instance. - * \param id_char The Identifier character. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_lin_set_id_char(volatile avr32_usart_t *usart, unsigned char id_char) -{ - usart->linir = (usart->linir & ~AVR32_USART_LINIR_IDCHR_MASK) | - id_char << AVR32_USART_LINIR_IDCHR_OFFSET; -} - -//! @} - -#endif // USART rev. >= 4.0.0 - - -//------------------------------------------------------------------------------ -#if defined(AVR32_USART_400_H_INCLUDED) || \ - defined(AVR32_USART_410_H_INCLUDED) || \ - defined(AVR32_USART_420_H_INCLUDED) || \ - defined(AVR32_USART_440_H_INCLUDED) || \ - defined(AVR32_USART_602_H_INCLUDED) - -/*! \name SPI Control Functions - */ -//! @{ - -/*! \brief Selects SPI slave chip. - * - * \param usart Base address of the USART instance. - * - * \retval USART_SUCCESS Success. - */ -extern int usart_spi_selectChip(volatile avr32_usart_t *usart); - -/*! \brief Unselects SPI slave chip. - * - * \param usart Base address of the USART instance. - * - * \retval USART_SUCCESS Success. - * \retval USART_FAILURE Time-out. - */ -extern int usart_spi_unselectChip(volatile avr32_usart_t *usart); - -//! @} - -#endif // USART rev. >= 4.0.0 - - -//------------------------------------------------------------------------------ -/*! \name Transmit/Receive Functions - */ -//! @{ - -/*! \brief Addresses a receiver. - * - * While in RS485 mode, receivers only accept data addressed to them. - * A packet/char with the address tag set has to precede any data. - * This function is used to address a receiver. This receiver should read - * all the following data, until an address packet addresses another receiver. - * - * \param usart Base address of the USART instance. - * \param address Address of the target device. - * - * \retval USART_SUCCESS Address successfully sent (if current mode is RS485). - * \retval USART_MODE_FAULT Wrong operating mode. - */ -extern int usart_send_address(volatile avr32_usart_t *usart, int address); - -/*! \brief Tests if the USART is ready to transmit a character. - * - * \param usart Base address of the USART instance. - * - * \return \c 1 if the USART Transmit Holding Register is free, otherwise \c 0. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ int usart_tx_ready(volatile avr32_usart_t *usart) -{ - return (usart->csr & AVR32_USART_CSR_TXRDY_MASK) != 0; -} - -/*! \brief Writes the given character to the TX buffer if the transmitter is ready. - * - * \param usart Base address of the USART instance. - * \param c The character (up to 9 bits) to transmit. - * - * \retval USART_SUCCESS The transmitter was ready. - * \retval USART_TX_BUSY The transmitter was busy. - */ -extern int usart_write_char(volatile avr32_usart_t *usart, int c); - -/*! \brief An active wait writing a character to the USART. - * - * \param usart Base address of the USART instance. - * \param c The character (up to 9 bits) to transmit. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_bw_write_char(volatile avr32_usart_t *usart, int c) -{ - while (usart_write_char(usart, c) != USART_SUCCESS); -} - -/*! \brief Sends a character with the USART. - * - * \param usart Base address of the USART instance. - * \param c Character to write. - * - * \retval USART_SUCCESS The character was written. - * \retval USART_FAILURE The function timed out before the USART transmitter became ready to send. - */ -extern int usart_putchar(volatile avr32_usart_t *usart, int c); - -/*! \brief Tests if all requested USART transmissions are over. - * - * \param usart Base address of the USART instance. - * - * \return \c 1 if the USART Transmit Shift Register and the USART Transmit - * Holding Register are free, otherwise \c 0. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ int usart_tx_empty(volatile avr32_usart_t *usart) -{ - return (usart->csr & AVR32_USART_CSR_TXEMPTY_MASK) != 0; -} - -/*! \brief Tests if the USART contains a received character. - * - * \param usart Base address of the USART instance. - * - * \return \c 1 if the USART Receive Holding Register is full, otherwise \c 0. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ int usart_test_hit(volatile avr32_usart_t *usart) -{ - return (usart->csr & AVR32_USART_CSR_RXRDY_MASK) != 0; -} - -/*! \brief Checks the RX buffer for a received character, and stores it at the - * given memory location. - * - * \param usart Base address of the USART instance. - * \param c Pointer to the where the read character should be stored - * (must be at least short in order to accept 9-bit characters). - * - * \retval USART_SUCCESS The character was read successfully. - * \retval USART_RX_EMPTY The RX buffer was empty. - * \retval USART_RX_ERROR An error was deteceted. - */ -extern int usart_read_char(volatile avr32_usart_t *usart, int *c); - -/*! \brief Waits until a character is received, and returns it. - * - * \param usart Base address of the USART instance. - * - * \return The received character, or \ref USART_FAILURE upon error. - */ -extern int usart_getchar(volatile avr32_usart_t *usart); - -/*! \brief Writes one character string to the USART. - * - * \param usart Base address of the USART instance. - * \param string String to be written. - */ -extern void usart_write_line(volatile avr32_usart_t *usart, const char *string); - -/*! \brief Gets and echoes characters until end of line. - * - * \param usart Base address of the USART instance. - * - * \retval USART_SUCCESS Success. - * \retval USART_FAILURE Low-level error detected or ETX character received. - */ -extern int usart_get_echo_line(volatile avr32_usart_t *usart); - -#if defined(AVR32_USART_400_H_INCLUDED) || \ - defined(AVR32_USART_410_H_INCLUDED) || \ - defined(AVR32_USART_420_H_INCLUDED) || \ - defined(AVR32_USART_440_H_INCLUDED) || \ - defined(AVR32_USART_602_H_INCLUDED) - -/*! \brief Abort LIN transmission. - * - * \param usart Base address of the USART instance. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ void usart_lin_abort(volatile avr32_usart_t *usart) -{ - usart->cr = AVR32_USART_LINABT_MASK; -} - -/*! \brief Tests if a LIN transfer has been completed. - * - * \param usart Base address of the USART instance. - * - * \return \c 1 if a LIN transfer has been completed, otherwise \c 0. - */ -#if (defined __GNUC__) -__attribute__((__always_inline__)) -#endif -extern __inline__ int usart_lin_transfer_completed(volatile avr32_usart_t *usart) -{ - return (usart->csr & AVR32_USART_CSR_LINTC_MASK) != 0; -} - -#endif // USART rev. >= 4.0.0 - -//! @} - - -#endif // _USART_H_ |