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+/* 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 AT32UC3A EVK1100 board LEDs support package.
+ *
+ * This file contains definitions and services related to the LED features of
+ * the EVK1100 board.
+ *
+ * - Compiler: IAR EWAVR32 and GNU GCC for AVR32
+ * - Supported devices: All AVR32 AT32UC3A devices 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 <avr32/io.h>
+#include "preprocessor.h"
+#include "compiler.h"
+#include "arduino.h"
+#include "led.h"
+
+
+//! Structure describing LED hardware connections.
+typedef const struct
+{
+ struct
+ {
+ U32 PORT; //!< LED GPIO port.
+ U32 PIN_MASK; //!< Bit-mask of LED pin in GPIO port.
+ } GPIO; //!< LED GPIO descriptor.
+ struct
+ {
+ S32 CHANNEL; //!< LED PWM channel (< 0 if N/A).
+ S32 FUNCTION; //!< LED pin PWM function (< 0 if N/A).
+ } PWM; //!< LED PWM descriptor.
+} tLED_DESCRIPTOR;
+
+
+//! Hardware descriptors of all LEDs.
+static tLED_DESCRIPTOR LED_DESCRIPTOR[LED_COUNT] =
+{
+#define INSERT_LED_DESCRIPTOR(LED_NO, unused) \
+ { \
+ {LED##LED_NO##_GPIO / 32, 1 << (LED##LED_NO##_GPIO % 32)},\
+ {LED##LED_NO##_PWM, LED##LED_NO##_PWM_FUNCTION } \
+ },
+ MREPEAT(LED_COUNT, INSERT_LED_DESCRIPTOR, ~)
+#undef INSERT_LED_DESCRIPTOR
+};
+
+
+//! Saved state of all LEDs.
+static volatile U32 LED_State = (1 << LED_COUNT) - 1;
+
+
+U32 LED_Read_Display(void)
+{
+ return LED_State;
+}
+
+
+void LED_Display(U32 leds)
+{
+ // Use the LED descriptors to get the connections of a given LED to the MCU.
+ tLED_DESCRIPTOR *led_descriptor;
+ volatile avr32_gpio_port_t *led_gpio_port;
+
+ // Make sure only existing LEDs are specified.
+ leds &= (1 << LED_COUNT) - 1;
+
+ // Update the saved state of all LEDs with the requested changes.
+ LED_State = leds;
+
+ // For all LEDs...
+ for (led_descriptor = &LED_DESCRIPTOR[0];
+ led_descriptor < LED_DESCRIPTOR + LED_COUNT;
+ led_descriptor++)
+ {
+ // Set the LED to the requested state.
+ led_gpio_port = &AVR32_GPIO.port[led_descriptor->GPIO.PORT];
+ if (leds & 1)
+ {
+ led_gpio_port->ovrc = led_descriptor->GPIO.PIN_MASK;
+ }
+ else
+ {
+ led_gpio_port->ovrs = led_descriptor->GPIO.PIN_MASK;
+ }
+ led_gpio_port->oders = led_descriptor->GPIO.PIN_MASK;
+ led_gpio_port->gpers = led_descriptor->GPIO.PIN_MASK;
+ leds >>= 1;
+ }
+}
+
+
+U32 LED_Read_Display_Mask(U32 mask)
+{
+ return Rd_bits(LED_State, mask);
+}
+
+
+void LED_Display_Mask(U32 mask, U32 leds)
+{
+ // Use the LED descriptors to get the connections of a given LED to the MCU.
+ tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1;
+ volatile avr32_gpio_port_t *led_gpio_port;
+ U8 led_shift;
+
+ // Make sure only existing LEDs are specified.
+ mask &= (1 << LED_COUNT) - 1;
+
+ // Update the saved state of all LEDs with the requested changes.
+ Wr_bits(LED_State, mask, leds);
+
+ // While there are specified LEDs left to manage...
+ while (mask)
+ {
+ // Select the next specified LED and set it to the requested state.
+ led_shift = 1 + ctz(mask);
+ led_descriptor += led_shift;
+ led_gpio_port = &AVR32_GPIO.port[led_descriptor->GPIO.PORT];
+ leds >>= led_shift - 1;
+ if (leds & 1)
+ {
+ led_gpio_port->ovrc = led_descriptor->GPIO.PIN_MASK;
+ }
+ else
+ {
+ led_gpio_port->ovrs = led_descriptor->GPIO.PIN_MASK;
+ }
+ led_gpio_port->oders = led_descriptor->GPIO.PIN_MASK;
+ led_gpio_port->gpers = led_descriptor->GPIO.PIN_MASK;
+ leds >>= 1;
+ mask >>= led_shift;
+ }
+}
+
+
+Bool LED_Test(U32 leds)
+{
+ return Tst_bits(LED_State, leds);
+}
+
+
+void LED_Off(U32 leds)
+{
+ // Use the LED descriptors to get the connections of a given LED to the MCU.
+ tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1;
+ volatile avr32_gpio_port_t *led_gpio_port;
+ U8 led_shift;
+
+ // Make sure only existing LEDs are specified.
+ leds &= (1 << LED_COUNT) - 1;
+
+ // Update the saved state of all LEDs with the requested changes.
+ Clr_bits(LED_State, leds);
+
+ // While there are specified LEDs left to manage...
+ while (leds)
+ {
+ // Select the next specified LED and turn it off.
+ led_shift = 1 + ctz(leds);
+ led_descriptor += led_shift;
+ led_gpio_port = &AVR32_GPIO.port[led_descriptor->GPIO.PORT];
+ led_gpio_port->ovrs = led_descriptor->GPIO.PIN_MASK;
+ led_gpio_port->oders = led_descriptor->GPIO.PIN_MASK;
+ led_gpio_port->gpers = led_descriptor->GPIO.PIN_MASK;
+ leds >>= led_shift;
+ }
+}
+
+
+void LED_On(U32 leds)
+{
+ // Use the LED descriptors to get the connections of a given LED to the MCU.
+ tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1;
+ volatile avr32_gpio_port_t *led_gpio_port;
+ U8 led_shift;
+
+ // Make sure only existing LEDs are specified.
+ leds &= (1 << LED_COUNT) - 1;
+
+ // Update the saved state of all LEDs with the requested changes.
+ Set_bits(LED_State, leds);
+
+ // While there are specified LEDs left to manage...
+ while (leds)
+ {
+ // Select the next specified LED and turn it on.
+ led_shift = 1 + ctz(leds);
+ led_descriptor += led_shift;
+ led_gpio_port = &AVR32_GPIO.port[led_descriptor->GPIO.PORT];
+ led_gpio_port->ovrc = led_descriptor->GPIO.PIN_MASK;
+ led_gpio_port->oders = led_descriptor->GPIO.PIN_MASK;
+ led_gpio_port->gpers = led_descriptor->GPIO.PIN_MASK;
+ leds >>= led_shift;
+ }
+}
+
+
+void LED_Toggle(U32 leds)
+{
+ // Use the LED descriptors to get the connections of a given LED to the MCU.
+ tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1;
+ volatile avr32_gpio_port_t *led_gpio_port;
+ U8 led_shift;
+
+ // Make sure only existing LEDs are specified.
+ leds &= (1 << LED_COUNT) - 1;
+
+ // Update the saved state of all LEDs with the requested changes.
+ Tgl_bits(LED_State, leds);
+
+ // While there are specified LEDs left to manage...
+ while (leds)
+ {
+ // Select the next specified LED and toggle it.
+ led_shift = 1 + ctz(leds);
+ led_descriptor += led_shift;
+ led_gpio_port = &AVR32_GPIO.port[led_descriptor->GPIO.PORT];
+ led_gpio_port->ovrt = led_descriptor->GPIO.PIN_MASK;
+ led_gpio_port->oders = led_descriptor->GPIO.PIN_MASK;
+ led_gpio_port->gpers = led_descriptor->GPIO.PIN_MASK;
+ leds >>= led_shift;
+ }
+}
+
+
+U32 LED_Read_Display_Field(U32 field)
+{
+ return Rd_bitfield(LED_State, field);
+}
+
+
+void LED_Display_Field(U32 field, U32 leds)
+{
+ // Move the bit-field to the appropriate position for the bit-mask.
+ LED_Display_Mask(field, leds << ctz(field));
+}
+
+
+U8 LED_Get_Intensity(U32 led)
+{
+ tLED_DESCRIPTOR *led_descriptor;
+
+ // Check that the argument value is valid.
+ led = ctz(led);
+ led_descriptor = &LED_DESCRIPTOR[led];
+ if (led >= LED_COUNT || led_descriptor->PWM.CHANNEL < 0) return 0;
+
+ // Return the duty cycle value if the LED PWM channel is enabled, else 0.
+ return (AVR32_PWM.sr & (1 << led_descriptor->PWM.CHANNEL)) ?
+ AVR32_PWM.channel[led_descriptor->PWM.CHANNEL].cdty : 0;
+}
+
+
+void LED_Set_Intensity(U32 leds, U8 intensity)
+{
+ tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1;
+ volatile avr32_pwm_channel_t *led_pwm_channel;
+ volatile avr32_gpio_port_t *led_gpio_port;
+ U8 led_shift;
+
+ // For each specified LED...
+ for (leds &= (1 << LED_COUNT) - 1; leds; leds >>= led_shift)
+ {
+ // Select the next specified LED and check that it has a PWM channel.
+ led_shift = 1 + ctz(leds);
+ led_descriptor += led_shift;
+ if (led_descriptor->PWM.CHANNEL < 0) continue;
+
+ // Initialize or update the LED PWM channel.
+ led_pwm_channel = &AVR32_PWM.channel[led_descriptor->PWM.CHANNEL];
+ if (!(AVR32_PWM.sr & (1 << led_descriptor->PWM.CHANNEL)))
+ {
+ led_pwm_channel->cmr = (AVR32_PWM_CPRE_MCK << AVR32_PWM_CPRE_OFFSET) &
+ ~(AVR32_PWM_CALG_MASK |
+ AVR32_PWM_CPOL_MASK |
+ AVR32_PWM_CPD_MASK);
+ led_pwm_channel->cprd = 0x000000FF;
+ led_pwm_channel->cdty = intensity;
+ AVR32_PWM.ena = 1 << led_descriptor->PWM.CHANNEL;
+ }
+ else
+ {
+ AVR32_PWM.isr;
+ while (!(AVR32_PWM.isr & (1 << led_descriptor->PWM.CHANNEL)));
+ led_pwm_channel->cupd = intensity;
+ }
+
+ // Switch the LED pin to its PWM function.
+ led_gpio_port = &AVR32_GPIO.port[led_descriptor->GPIO.PORT];
+ if (led_descriptor->PWM.FUNCTION & 0x1)
+ {
+ led_gpio_port->pmr0s = led_descriptor->GPIO.PIN_MASK;
+ }
+ else
+ {
+ led_gpio_port->pmr0c = led_descriptor->GPIO.PIN_MASK;
+ }
+ if (led_descriptor->PWM.FUNCTION & 0x2)
+ {
+ led_gpio_port->pmr1s = led_descriptor->GPIO.PIN_MASK;
+ }
+ else
+ {
+ led_gpio_port->pmr1c = led_descriptor->GPIO.PIN_MASK;
+ }
+ led_gpio_port->gperc = led_descriptor->GPIO.PIN_MASK;
+ }
+}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-22 08:07:33 +0000