/**
* \brief Main entry point for GPIO example.
*/
int main(void)
{
/* Initialize the SAM system */
sysclk_init();
board_init();
/* Initialize the console uart */
configure_console();
/* Output example information */
printf("\r\n\r\n-- GPIO interrupt and event example --\r\n");
printf("-- %s\r\n", BOARD_NAME);
printf("-- Compiled: %s %s --\r\n", __DATE__, __TIME__);
//! [config_button_0_trig_fall]
/* Configure push button 0 to trigger an interrupt on falling edge */
//! [config_button_0_trig_fall_1]
ioport_set_pin_dir(EXAMPLE_BUTTON_INT, IOPORT_DIR_INPUT);
ioport_set_pin_mode(EXAMPLE_BUTTON_INT, IOPORT_MODE_PULLUP |
IOPORT_MODE_GLITCH_FILTER);
ioport_set_pin_sense_mode(EXAMPLE_BUTTON_INT, IOPORT_SENSE_FALLING);
//! [config_button_0_trig_fall_1]
//! [config_button_0_trig_fall_2]
if (!gpio_set_pin_callback(EXAMPLE_BUTTON_INT, pb0_callback, 1)) {
printf("Set pin callback failure!\r\n");
while (1) {
}
}
//! [config_button_0_trig_fall_2]
//! [enable_pin_interrupt]
gpio_enable_pin_interrupt(EXAMPLE_BUTTON_INT);
//! [enable_pin_interrupt]
//! [config_button_0_trig_fall]
printf("Press %s to trigger LED.\r\n", BUTTON_0_NAME);
/* Configure pin to trigger an event on falling edge */
ioport_set_pin_mode(EXAMPLE_PIN_EVENT, IOPORT_MODE_PULLUP |
IOPORT_MODE_MUX_C);
ioport_disable_pin(EXAMPLE_PIN_EVENT);
ioport_set_pin_sense_mode(EXAMPLE_PIN_EVENT, IOPORT_SENSE_FALLING);
gpio_enable_pin_periph_event(EXAMPLE_PIN_EVENT);
printf("Connect %s to %s to trigger an event.\r\n", EXAMPLE_PIN_NAME,
EXAMPLE_GND_NAME);
init_pevc();
init_pdca();
while (1) {
}
}
/**
* Initialize the PDCA transfer for the example.
*/
static void init_pdca(void)
{
/* PDCA channel options */
static const pdca_channel_config_t pdca_tx_configs = {
.addr = (void *)event_string,
.pid = PDCA_PID_USART2_TX,
.size = sizeof(event_string),
.r_addr = 0,
.r_size = 0,
.ring = false,
.etrig = true,
.transfer_size = PDCA_MR_SIZE_BYTE
};
/* Enable PDCA module */
pdca_enable(PDCA);
/* Init PDCA channel with the pdca_options.*/
pdca_channel_set_config(PEVC_ID_USER_PDCA_0, &pdca_tx_configs);
/* Set callback for PDCA channel */
pdca_channel_set_callback(PEVC_ID_USER_PDCA_0, pdca_tranfer_done,
PDCA_0_IRQn, 1, PDCA_IER_TRC | PDCA_IER_TERR);
/* Enable PDCA channel */
pdca_channel_enable(PEVC_ID_USER_PDCA_0);
}
/**
* Configure serial console.
*/
static void configure_console(void)
{
const usart_serial_options_t uart_serial_options = {
.baudrate = CONF_UART_BAUDRATE,
#ifdef CONF_UART_CHAR_LENGTH
.charlength = CONF_UART_CHAR_LENGTH,
#endif
.paritytype = CONF_UART_PARITY,
#ifdef CONF_UART_STOP_BITS
.stopbits = CONF_UART_STOP_BITS,
#endif
};
/* Configure console. */
stdio_serial_init(CONF_UART, &uart_serial_options);
}
/**
* \brief Main entry point for event example.
*/
int main(void)
{
/* Initialize the SAM system */
sysclk_init();
board_init();
/* Initialize the console uart */
configure_console();
/* Output example information */
printf("\r\n\r\n-- Events example 2 --\r\n");
printf("-- %s\r\n", BOARD_NAME);
printf("-- Compiled: %s %s --\r\n", __DATE__, __TIME__);
/* Configure pin to trigger an enent on falling edge */
ioport_set_pin_mode(CONF_EXAMPLE_PIN_EVENT, IOPORT_MODE_PULLUP |
IOPORT_MODE_MUX_C);
ioport_disable_pin(CONF_EXAMPLE_PIN_EVENT);
ioport_set_pin_sense_mode(CONF_EXAMPLE_PIN_EVENT, IOPORT_SENSE_FALLING);
gpio_enable_pin_periph_event(CONF_EXAMPLE_PIN_EVENT);
printf(CONF_EXAMPLE_EVENT_MSG);
init_events();
init_pdca();
while (1) {
/* Toggle LED0 every 500 ms */
LED_Toggle(LED0);
delay_ms(500);
}
}
/**
* \brief Initialize the PDCA transfer for the example.
*/
static void init_pdca(void)
{
/* PDCA channel options */
static const pdca_channel_config_t pdca_tx_configs = {
.addr = (void *)event_string,
.pid = CONF_PDCA_PID_USART_TX,
.size = sizeof(event_string),
.r_addr = 0,
.r_size = 0,
.ring = false,
.etrig = true,
.transfer_size = PDCA_MR_SIZE_BYTE
};
/* Enable PDCA module */
pdca_enable(PDCA);
/* Init PDCA channel with the pdca_options.*/
pdca_channel_set_config(PEVC_ID_USER_PDCA_0, &pdca_tx_configs);
/* Set callback for PDCA channel */
pdca_channel_set_callback(PEVC_ID_USER_PDCA_0, pdca_tranfer_done,
PDCA_0_IRQn, 1, PDCA_IER_TRC | PDCA_IER_TERR);
/* Enable PDCA channel */
pdca_channel_enable(PEVC_ID_USER_PDCA_0);
}
/**
* \brief Configure serial console.
*/
static void configure_console(void)
{
const usart_serial_options_t uart_serial_options = {
.baudrate = CONF_UART_BAUDRATE,
#ifdef CONF_UART_CHAR_LENGTH
.charlength = CONF_UART_CHAR_LENGTH,
#endif /* CONF_UART_CHAR_LENGTH */
.paritytype = CONF_UART_PARITY,
#ifdef CONF_UART_STOP_BITS
.stopbits = CONF_UART_STOP_BITS,
#endif /* CONF_UART_STOP_BITS */
};
/* Configure console. */
stdio_serial_init(CONF_UART, &uart_serial_options);
}
/**
* \brief Main entry point for event example.
*/
int main(void)
{
/* Initialize the SAM system */
sysclk_init();
board_init();
/* Initialize the console uart */
configure_console();
/* Output example information */
printf("\r\n\r\n-- Events example 1 --\r\n");
printf("-- %s\r\n", BOARD_NAME);
printf("-- Compiled: %s %s --\r\n", __DATE__, __TIME__);
//! [quick_start_init_all_basic_use]
/* Initialize AST as event generator. */
//! [quick_start_init_ast_basic_use]
init_ast();
//! [quick_start_init_ast_basic_use]
/* Initialise events for this example. */
//! [quick_start_init_events_basic_use]
init_events();
//! [quick_start_init_events_basic_use]
/* Initialize the PDCA as event user */
//! [quick_start_init_pdca_basic_use]
init_pdca();
//! [quick_start_init_pdca_basic_use]
//! [quick_start_init_all_basic_use]
while (1) {
/* Toggle LED0 every 500 ms */
LED_Toggle(LED0);
delay_ms(500);
}
}
/**
** PDCA Init.
**/
void init_pdca(void)
{
// PDCA channel 0/1 options
static const pdca_channel_options_t PDCA_CH_OPTIONS =
{
.addr = (void *)aDataTransfered, // memory address
.pid = AVR32_PDCA_PID_USART2_TX, // select peripheral - data are transmit on USART TX line.
.size = 0, // transfer counter
.r_addr = (void *)aDataTransfered, // next memory address
.r_size = sizeof(aDataTransfered), // next transfer counter
.transfer_size = PDCA_TRANSFER_SIZE_BYTE, // select size of one data packet
.etrig = true // Trigger transfer on event.
};
Disable_global_interrupt();
// Initialize interrupt vectors.
INTC_init_interrupts();
// Register the PDCA interrupt handler to the interrupt controller.
INTC_register_interrupt(&pdca_int_handler, PDCA_CHANNEL_IRQ, AVR32_INTC_INT0);
Enable_global_interrupt();
// Init PDCA channel with the pdca_options.
pdca_init_channel(PDCA_CHANNEL_USART, &PDCA_CH_OPTIONS);
pdca_channel = pdca_get_handler(PDCA_CHANNEL_USART); // For use in the pdca interrupt handler.
// Enable pdca transfer error interrupt & transfer complete interrupt.
pdca_enable_interrupt_transfer_error(PDCA_CHANNEL_USART);
pdca_enable_interrupt_transfer_complete(PDCA_CHANNEL_USART);
// Enable the PEVC channel "PDCA CHANNEL 0/1 ONE-ITEM-TRANSFER"
PEVC_CHANNELS_ENABLE(ppevc, 1<<PEVC_PDCA_SOT_USER);
// Enable the PDCA.
pdca_enable(PDCA_CHANNEL_USART);
}
/**
** AST Init.
**/
void init_ast(void)
{
avr32_ast_pir0_t pir = {
.insel = 14 // Set a event every second
};
ast_calendar_t ast_calendar;
ast_calendar.FIELD.sec = 30;
ast_calendar.FIELD.min = 45;
ast_calendar.FIELD.hour = 12;
ast_calendar.FIELD.day = 7;
ast_calendar.FIELD.month= 10;
ast_calendar.FIELD.year = 9;
scif_osc32_opt_t opt;
opt.mode = SCIF_OSC_MODE_2PIN_CRYSTAL;
opt.startup = AVR32_SCIF_OSCCTRL32_STARTUP_0_RCOSC;
// Start OSC_32KHZ
scif_start_osc32(&opt,true);
// Initialize the AST
if (!ast_init_calendar(&AVR32_AST, AST_OSC_32KHZ, AST_PSEL_32KHZ_1HZ, ast_calendar))
{
print_dbg("Error initializing the AST\r\n");
while(1);
}
ast_set_periodic0_value(&AVR32_AST,pir);
ast_enable_periodic0(&AVR32_AST);
// Clear All Interrupt
AVR32_AST.scr=0xFFFFFFFF;
// Enable the AST
ast_enable(&AVR32_AST);
}
/*! \brief Initializes the MCU system clocks.
*/
static void init_sys_clocks(void)
{
/*! \name System Clock Frequencies
*/
//! @{
static pcl_freq_param_t pcl_freq_param =
{
.cpu_f = FCPU_HZ,
.pba_f = FPBA_HZ,
.osc0_f = FOSC0,
.osc0_startup = OSC0_STARTUP
};
//! @}
// Configure system clocks.
if (pcl_configure_clocks(&pcl_freq_param) != PASS) {
while(1);
}
}
/*! \brief This example show a DMA transfer to USART controlled by the AST
periodic alarm using the PEVC.
*/
int main(void)
{
int i;
// Init the string with a simple recognizable pattern.
for(i=0;i<sizeof(aDataTransfered);i++)
aDataTransfered[i] = '0' + (i%36);
init_sys_clocks();
init_usart();
gpio_clr_gpio_pin(LED0_GPIO);
init_pevc();
init_ast();
init_pdca();
while(1)
{
gpio_tgl_gpio_pin(LED1_GPIO);
delay_ms(500); //Wait 500ms
}
}
