/**
* \name PWM functions
* @{
*/
void ui_pwm_led_init(uint8_t lednum)
{
/* Timer waveform options */
static tc_waveform_opt_t waveform_options = {
/* Channel selection. */
.channel = 1,
.bswtrg = TC_EVT_EFFECT_NOOP,
.beevt = TC_EVT_EFFECT_NOOP,
.bcpc = TC_EVT_EFFECT_NOOP,
.bcpb = TC_EVT_EFFECT_NOOP,
.aswtrg = TC_EVT_EFFECT_NOOP,
.aeevt = TC_EVT_EFFECT_NOOP,
.acpc = TC_EVT_EFFECT_NOOP,
.acpa = TC_EVT_EFFECT_NOOP,
/* Waveform selection */
.wavsel = TC_WAVEFORM_SEL_UP_MODE_RC_TRIGGER,
/* External event trigger enable. */
.enetrg = false,
/* External event selection (non-zero for Channel B to work) */
.eevt = !0,
/* External event edge selection. */
.eevtedg = TC_SEL_NO_EDGE,
.cpcdis = false,
.cpcstop = false,
.burst = false,
.clki = false,
/* Internal source clock 5, fPBA/128. */
.tcclks = TC_CLOCK_SOURCE_TC5,
};
switch (lednum) {
case LED0:
/* Assign output pin to timer/counter 0 channel A */
/* Channel selection. */
waveform_options.channel = 1;
waveform_options.bcpc = TC_EVT_EFFECT_NOOP;
waveform_options.bcpb = TC_EVT_EFFECT_NOOP;
/* RC compare effect on TIOA. */
waveform_options.acpc = TC_EVT_EFFECT_CLEAR;
/* RA compare effect on TIOA. */
waveform_options.acpa = TC_EVT_EFFECT_SET;
/* Setup timer/counter waveform mode */
sysclk_enable_peripheral_clock(&AVR32_TC0);
tc_init_waveform(&AVR32_TC0, &waveform_options);
/* Write the TOP (RC) and COMPARE (RA) values */
tc_write_ra(&AVR32_TC0, 1, 1); /* Set RA value. */
tc_write_rc(&AVR32_TC0, 1, 255); /* Set RC value. */
/* Start the timer PWM channel */
tc_start(&AVR32_TC0, 1);
break;
case LED1:
/* Assign output pin to timer/counter 1 channel B */
/* Channel selection. */
waveform_options.channel = 2;
waveform_options.acpc = TC_EVT_EFFECT_NOOP;
waveform_options.acpa = TC_EVT_EFFECT_NOOP;
/* RC compare effect on TIOB. */
waveform_options.bcpc = TC_EVT_EFFECT_CLEAR;
/* RB compare effect on TIOB. */
waveform_options.bcpb = TC_EVT_EFFECT_SET;
/* Setup timer/counter waveform mode */
sysclk_enable_peripheral_clock(&AVR32_TC1);
tc_init_waveform(&AVR32_TC1, &waveform_options);
/* Write the TOP (RC) and COMPARE (RB) values */
tc_write_rb(&AVR32_TC1, 2, 1); /* Set RB value. */
tc_write_rc(&AVR32_TC1, 2, 255); /* Set RC value. */
/* Start the timer PWM channel */
tc_start(&AVR32_TC1, 2);
break;
default:
break;
}
}
void ui_pwm_update(uint8_t channum, uint8_t brightness)
{
switch (channum) {
case LED0:
if (brightness != 0) {
gpio_enable_module_pin(AVR32_TC0_A1_0_1_PIN,
AVR32_TC0_A1_0_1_FUNCTION);
tc_start(&AVR32_TC0, 1);
tc_write_ra(&AVR32_TC0, 1, brightness);
} else {
tc_stop(&AVR32_TC0, 1);
LED_Off(LED0);
}
break;
case LED1:
if (brightness != 0) {
gpio_enable_module_pin(AVR32_TC1_B2_0_PIN,
AVR32_TC1_B2_0_FUNCTION);
tc_start(&AVR32_TC1, 2);
tc_write_rb(&AVR32_TC1, 2, brightness);
} else {
tc_stop(&AVR32_TC1, 2);
LED_Off(LED0);
}
break;
default:
break;
}
}
/* End of PWM */
/** @} */
/**
* \name Display functions
* @{
*/
static void ui_display_enable(void)
{
delay_init(sysclk_get_cpu_hz());
et024006_Init( sysclk_get_cpu_hz(), sysclk_get_hsb_hz());
/* Clear the display i.e. make it black */
et024006_DrawFilledRect(0, 0, ET024006_WIDTH, ET024006_HEIGHT, BLACK );
/* Set the backlight. */
gpio_set_gpio_pin(ET024006DHU_BL_PIN);
ui_display_init_rtc();
ui_display_welcome_msg();
}
int _init_startup(void)
{
/* Import the Exception Vector Base Address. */
extern void _evba;
#if configHEAP_INIT
extern void __heap_start__;
extern void __heap_end__;
portBASE_TYPE *pxMem;
#endif
/* Load the Exception Vector Base Address in the corresponding system register. */
Set_system_register( AVR32_EVBA, ( int ) &_evba );
board_init();
sysclk_init();
sdramc_init(sysclk_get_hsb_hz());
/* Enable exceptions. */
ENABLE_ALL_EXCEPTIONS();
/* Initialize interrupt handling. */
INTC_init_interrupts();
#if configHEAP_INIT
/* Initialize the heap used by malloc. */
for( pxMem = &__heap_start__; pxMem < ( portBASE_TYPE * )&__heap_end__; )
{
*pxMem++ = 0xA5A5A5A5;
}
#endif
/* Code section present if and only if the debug trace is activated. */
#if 0 //configDBG
{
static const gpio_map_t DBG_USART_GPIO_MAP =
{
{ configDBG_USART_RX_PIN, configDBG_USART_RX_FUNCTION },
{ configDBG_USART_TX_PIN, configDBG_USART_TX_FUNCTION }
};
static const usart_options_t DBG_USART_OPTIONS =
{
.baudrate = configDBG_USART_BAUDRATE,
.charlength = 8,
.paritytype = USART_NO_PARITY,
.stopbits = USART_1_STOPBIT,
.channelmode = USART_NORMAL_CHMODE
};
/* Initialize the USART used for the debug trace with the configured parameters. */
extern volatile avr32_usart_t *volatile stdio_usart_base;
stdio_usart_base = configDBG_USART;
gpio_enable_module( DBG_USART_GPIO_MAP,
sizeof( DBG_USART_GPIO_MAP ) / sizeof( DBG_USART_GPIO_MAP[0] ) );
usart_init_rs232(configDBG_USART, &DBG_USART_OPTIONS, configPBA_CLOCK_HZ);
}
#endif
// Don't-care value for GCC.
return 1;
}
/*-----------------------------------------------------------*/
/*
* malloc, realloc and free are meant to be called through respectively
* pvPortMalloc, pvPortRealloc and vPortFree.
* The latter functions call the former ones from within sections where tasks
* are suspended, so the latter functions are task-safe. __malloc_lock and
* __malloc_unlock use the same mechanism to also keep the former functions
* task-safe as they may be called directly from Newlib's functions.
* However, all these functions are interrupt-unsafe and SHALL THEREFORE NOT BE
* CALLED FROM WITHIN AN INTERRUPT, because __malloc_lock and __malloc_unlock do
* not call portENTER_CRITICAL and portEXIT_CRITICAL in order not to disable
* interrupts during memory allocation management as this may be a very time-
* consuming process.
*/
/*
* Lock routine called by Newlib on malloc / realloc / free entry to guarantee a
* safe section as memory allocation management uses global data.
* See the aforementioned details.
*/
void __malloc_lock(struct _reent *ptr);
void __malloc_lock(struct _reent *ptr)
{
vTaskSuspendAll();
}
/*
* Unlock routine called by Newlib on malloc / realloc / free exit to guarantee
* a safe section as memory allocation management uses global data.
* See the aforementioned details.
*/
void __malloc_unlock(struct _reent *ptr);
void __malloc_unlock(struct _reent *ptr)
{
xTaskResumeAll();
}
/*-----------------------------------------------------------*/
/* Added as there is no such function in FreeRTOS. */
void *pvPortRealloc( void *pv, size_t xWantedSize )
{
void *pvReturn;
vTaskSuspendAll();
{
pvReturn = realloc( pv, xWantedSize );
}
xTaskResumeAll();
return pvReturn;
}
