blob: 70705769be9d077ad85d99076745f781a3883929 [file] [log] [blame]
/*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;
}
}