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[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [AVR32_UC3/] [BOARDS/] [EVK1101/] [led.c] - Rev 866
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/*This file is prepared for Doxygen automatic documentation generation.*/ /*! \file ********************************************************************* * * \brief AT32UC3B EVK1101 board LEDs support package. * * This file contains definitions and services related to the LED features of * the EVK1101 board. * * - Compiler: IAR EWAVR32 and GNU GCC for AVR32 * - Supported devices: All AVR32 AT32UC3B devices can be used. * - AppNote: * * \author Atmel Corporation: http://www.atmel.com \n * Support and FAQ: http://support.atmel.no/ * ******************************************************************************/ /* Copyright (c) 2007, 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. * * THIS SOFTWARE IS PROVIDED BY ATMEL ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 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 "evk1101.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) { tLED_DESCRIPTOR *led_descriptor; volatile avr32_gpio_port_t *led_gpio_port; leds &= (1 << LED_COUNT) - 1; LED_State = leds; for (led_descriptor = &LED_DESCRIPTOR[0]; led_descriptor < LED_DESCRIPTOR + LED_COUNT; led_descriptor++) { 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) { tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1; volatile avr32_gpio_port_t *led_gpio_port; U8 led_shift; mask &= (1 << LED_COUNT) - 1; Wr_bits(LED_State, mask, leds); while (mask) { 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) { tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1; volatile avr32_gpio_port_t *led_gpio_port; U8 led_shift; leds &= (1 << LED_COUNT) - 1; Clr_bits(LED_State, leds); while (leds) { 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) { tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1; volatile avr32_gpio_port_t *led_gpio_port; U8 led_shift; leds &= (1 << LED_COUNT) - 1; Set_bits(LED_State, leds); while (leds) { 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) { tLED_DESCRIPTOR *led_descriptor = &LED_DESCRIPTOR[0] - 1; volatile avr32_gpio_port_t *led_gpio_port; U8 led_shift; leds &= (1 << LED_COUNT) - 1; Tgl_bits(LED_State, leds); while (leds) { 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) { 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; } }
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