From 4a7ef06b516dba4cdda939a16e5458c59592f6b1 Mon Sep 17 00:00:00 2001 From: David Madison Date: Fri, 15 Feb 2019 12:08:19 -0500 Subject: Delete 'firmwares' folder --- .../src/SOFTWARE_FRAMEWORK/DRIVERS/SPI/spi.c | 443 --------------------- 1 file changed, 443 deletions(-) delete mode 100644 firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/SPI/spi.c (limited to 'firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/SPI/spi.c') diff --git a/firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/SPI/spi.c b/firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/SPI/spi.c deleted file mode 100644 index cadb8b1..0000000 --- a/firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/DRIVERS/SPI/spi.c +++ /dev/null @@ -1,443 +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 SPI driver for AVR32 UC3. - * - * This file defines a useful set of functions for the SPI interface on AVR32 - * devices. - * - * - Compiler: IAR EWAVR32 and GNU GCC for AVR32 - * - Supported devices: All AVR32 devices with an SPI 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 "spi.h" - -#ifdef FREERTOS_USED - -#include "FreeRTOS.h" -#include "semphr.h" - -#endif - - -/*! \name SPI Writable Bit-Field Registers - */ -//! @{ - -typedef union -{ - unsigned long cr; - avr32_spi_cr_t CR; -} u_avr32_spi_cr_t; - -typedef union -{ - unsigned long mr; - avr32_spi_mr_t MR; -} u_avr32_spi_mr_t; - -typedef union -{ - unsigned long tdr; - avr32_spi_tdr_t TDR; -} u_avr32_spi_tdr_t; - -typedef union -{ - unsigned long ier; - avr32_spi_ier_t IER; -} u_avr32_spi_ier_t; - -typedef union -{ - unsigned long idr; - avr32_spi_idr_t IDR; -} u_avr32_spi_idr_t; - -typedef union -{ - unsigned long csr; - avr32_spi_csr0_t CSR; -} u_avr32_spi_csr_t; - -//! @} - - -#ifdef FREERTOS_USED - -//! The SPI mutex. -static xSemaphoreHandle xSPIMutex; - -#endif - - -/*! \brief Calculates the baudrate divider. - * - * \param options Pointer to a structure containing initialization options for - * an SPI channel. - * \param pba_hz SPI module input clock frequency (PBA clock, Hz). - * - * \return Divider or error code. - * \retval >=0 Success. - * \retval <0 Error. - */ -static int getBaudDiv(const spi_options_t *options, unsigned int pba_hz) -{ - int baudDiv = (pba_hz + options->baudrate / 2) / options->baudrate; - - if (baudDiv <= 0 || baudDiv > 255) { - return -1; - } - - return baudDiv; -} - - -void spi_reset(volatile avr32_spi_t *spi) -{ - spi->cr = AVR32_SPI_CR_SWRST_MASK; -} - - -spi_status_t spi_initSlave(volatile avr32_spi_t *spi, - unsigned char bits, - unsigned char spi_mode) -{ - if (spi_mode > 3 || - bits < 8 || bits > 16) { - return SPI_ERROR_ARGUMENT; - } - - // Reset. - spi->cr = AVR32_SPI_CR_SWRST_MASK; - - // Will use CSR0 offsets; these are the same for CSR0 to CSR3. - spi->csr0 = ((spi_mode >> 1) << AVR32_SPI_CSR0_CPOL_OFFSET) | - (((spi_mode & 0x1) ^ 0x1) << AVR32_SPI_CSR0_NCPHA_OFFSET) | - ((bits - 8) << AVR32_SPI_CSR0_BITS_OFFSET); - - return SPI_OK; -} - - -spi_status_t spi_initTest(volatile avr32_spi_t *spi) -{ - // Reset. - spi->cr = AVR32_SPI_CR_SWRST_MASK; - spi->mr |= AVR32_SPI_MR_MSTR_MASK | // Master Mode. - AVR32_SPI_MR_LLB_MASK; // Local Loopback. - - return SPI_OK; -} - - -spi_status_t spi_initMaster(volatile avr32_spi_t *spi, const spi_options_t *options) -{ - u_avr32_spi_mr_t u_avr32_spi_mr; - - if (options->modfdis > 1) { - return SPI_ERROR_ARGUMENT; - } - - // Reset. - spi->cr = AVR32_SPI_CR_SWRST_MASK; - - // Master Mode. - u_avr32_spi_mr.mr = spi->mr; - u_avr32_spi_mr.MR.mstr = 1; - u_avr32_spi_mr.MR.modfdis = options->modfdis; - u_avr32_spi_mr.MR.llb = 0; - u_avr32_spi_mr.MR.pcs = (1 << AVR32_SPI_MR_PCS_SIZE) - 1; - spi->mr = u_avr32_spi_mr.mr; - - return SPI_OK; -} - - -spi_status_t spi_selectionMode(volatile avr32_spi_t *spi, - unsigned char variable_ps, - unsigned char pcs_decode, - unsigned char delay) -{ - u_avr32_spi_mr_t u_avr32_spi_mr; - - if (variable_ps > 1 || - pcs_decode > 1) { - return SPI_ERROR_ARGUMENT; - } - - u_avr32_spi_mr.mr = spi->mr; - u_avr32_spi_mr.MR.ps = variable_ps; - u_avr32_spi_mr.MR.pcsdec = pcs_decode; - u_avr32_spi_mr.MR.dlybcs = delay; - spi->mr = u_avr32_spi_mr.mr; - - return SPI_OK; -} - - -spi_status_t spi_selectChip(volatile avr32_spi_t *spi, unsigned char chip) -{ -#ifdef FREERTOS_USED - while (pdFALSE == xSemaphoreTake(xSPIMutex, 20)); -#endif - - // Assert all lines; no peripheral is selected. - spi->mr |= AVR32_SPI_MR_PCS_MASK; - - if (spi->mr & AVR32_SPI_MR_PCSDEC_MASK) { - // The signal is decoded; allow up to 15 chips. - if (chip > 14) { - return SPI_ERROR_ARGUMENT; - } - - spi->mr &= ~AVR32_SPI_MR_PCS_MASK | (chip << AVR32_SPI_MR_PCS_OFFSET); - } else { - if (chip > 3) { - return SPI_ERROR_ARGUMENT; - } - - spi->mr &= ~(1 << (AVR32_SPI_MR_PCS_OFFSET + chip)); - } - - return SPI_OK; -} - - -spi_status_t spi_unselectChip(volatile avr32_spi_t *spi, unsigned char chip) -{ - unsigned int timeout = SPI_TIMEOUT; - - while (!(spi->sr & AVR32_SPI_SR_TXEMPTY_MASK)) { - if (!timeout--) { - return SPI_ERROR_TIMEOUT; - } - } - - // Assert all lines; no peripheral is selected. - spi->mr |= AVR32_SPI_MR_PCS_MASK; - - // Last transfer, so deassert the current NPCS if CSAAT is set. - spi->cr = AVR32_SPI_CR_LASTXFER_MASK; - -#ifdef FREERTOS_USED - xSemaphoreGive(xSPIMutex); -#endif - - return SPI_OK; -} - - -spi_status_t spi_setupChipReg(volatile avr32_spi_t *spi, - const spi_options_t *options, - unsigned int pba_hz) -{ - u_avr32_spi_csr_t u_avr32_spi_csr; - - if (options->spi_mode > 3 || - options->stay_act > 1 || - options->bits < 8 || options->bits > 16) { - return SPI_ERROR_ARGUMENT; - } - - int baudDiv = getBaudDiv(options, pba_hz); - - if (baudDiv < 0) { - return SPI_ERROR_ARGUMENT; - } - - // Will use CSR0 offsets; these are the same for CSR0 to CSR3. - u_avr32_spi_csr.csr = 0; - u_avr32_spi_csr.CSR.cpol = options->spi_mode >> 1; - u_avr32_spi_csr.CSR.ncpha = (options->spi_mode & 0x1) ^ 0x1; - u_avr32_spi_csr.CSR.csaat = options->stay_act; - u_avr32_spi_csr.CSR.bits = options->bits - 8; - u_avr32_spi_csr.CSR.scbr = baudDiv; - u_avr32_spi_csr.CSR.dlybs = options->spck_delay; - u_avr32_spi_csr.CSR.dlybct = options->trans_delay; - - switch(options->reg) { - case 0: - spi->csr0 = u_avr32_spi_csr.csr; - break; - case 1: - spi->csr1 = u_avr32_spi_csr.csr; - break; - case 2: - spi->csr2 = u_avr32_spi_csr.csr; - break; - case 3: - spi->csr3 = u_avr32_spi_csr.csr; - break; - default: - return SPI_ERROR_ARGUMENT; - } - -#ifdef FREERTOS_USED - if (!xSPIMutex) - { - // Create the SPI mutex. - vSemaphoreCreateBinary(xSPIMutex); - if (!xSPIMutex) - { - while(1); - } - } -#endif - - return SPI_OK; -} - - -void spi_enable(volatile avr32_spi_t *spi) -{ - spi->cr = AVR32_SPI_CR_SPIEN_MASK; -} - - -void spi_disable(volatile avr32_spi_t *spi) -{ - spi->cr = AVR32_SPI_CR_SPIDIS_MASK; -} - - -int spi_is_enabled(volatile avr32_spi_t *spi) -{ - return (spi->sr & AVR32_SPI_SR_SPIENS_MASK) != 0; -} - - -unsigned char spi_writeRegisterEmptyCheck(volatile avr32_spi_t *spi) -{ - return ((spi->sr & AVR32_SPI_SR_TDRE_MASK) != 0); -} - - -spi_status_t spi_write(volatile avr32_spi_t *spi, unsigned short data) -{ - unsigned int timeout = SPI_TIMEOUT; - - while (!(spi->sr & AVR32_SPI_SR_TDRE_MASK)) { - if (!timeout--) { - return SPI_ERROR_TIMEOUT; - } - } - - spi->tdr = data << AVR32_SPI_TDR_TD_OFFSET; - - return SPI_OK; -} - - -spi_status_t spi_variableSlaveWrite(volatile avr32_spi_t *spi, unsigned short data, - unsigned char pcs, unsigned char lastxfer) -{ - unsigned int timeout = SPI_TIMEOUT; - - if (pcs > 14 || lastxfer > 1) { - return SPI_ERROR_ARGUMENT; - } - - while (!(spi->sr & AVR32_SPI_SR_TDRE_MASK)) { - if (!timeout--) { - return SPI_ERROR_TIMEOUT; - } - } - - spi->tdr = (data << AVR32_SPI_TDR_TD_OFFSET) | - (pcs << AVR32_SPI_TDR_PCS_OFFSET) | - (lastxfer << AVR32_SPI_TDR_LASTXFER_OFFSET); - - return SPI_OK; -} - - -unsigned char spi_writeEndCheck(volatile avr32_spi_t *spi) -{ - return ((spi->sr & AVR32_SPI_SR_TXEMPTY_MASK) != 0); -} - - -unsigned char spi_readRegisterFullCheck(volatile avr32_spi_t *spi) -{ - return ((spi->sr & AVR32_SPI_SR_RDRF_MASK) != 0); -} - - -spi_status_t spi_read(volatile avr32_spi_t *spi, unsigned short *data) -{ - unsigned int timeout = SPI_TIMEOUT; - - while ((spi->sr & (AVR32_SPI_SR_RDRF_MASK | AVR32_SPI_SR_TXEMPTY_MASK)) != - (AVR32_SPI_SR_RDRF_MASK | AVR32_SPI_SR_TXEMPTY_MASK)) { - if (!timeout--) { - return SPI_ERROR_TIMEOUT; - } - } - - *data = spi->rdr >> AVR32_SPI_RDR_RD_OFFSET; - - return SPI_OK; -} - - -unsigned char spi_getStatus(volatile avr32_spi_t *spi) -{ - spi_status_t ret = SPI_OK; - unsigned long sr = spi->sr; - - if (sr & AVR32_SPI_SR_OVRES_MASK) { - ret = SPI_ERROR_OVERRUN; - } - - if (sr & AVR32_SPI_SR_MODF_MASK) { - ret += SPI_ERROR_MODE_FAULT; - } - - if (ret == (SPI_ERROR_OVERRUN + SPI_ERROR_MODE_FAULT)) { - return SPI_ERROR_OVERRUN_AND_MODE_FAULT; - } - else if (ret > 0) { - return ret; - } else { - return SPI_OK; - } -} -- cgit v1.2.3-18-g5258