/**
* \brief Test sleep Mode.
*/
static void test_sleep_mode(void)
{
/* Configure button for waking up sleep mode */
configure_button();
/* Select clock for sleep mode */
user_change_clock(STRING_SLEEP);
/* Disable UART */
pmc_disable_periph_clk(CONSOLE_UART_ID);
/* Enter into sleep Mode */
pmc_enable_sleepmode(0);
/* Set default clock and re-configure UART */
set_default_working_clock();
reconfigure_console(g_ul_current_mck, CONF_UART_BAUDRATE);
puts("Exit from sleep Mode.\r");
}
/**
* \brief getting-started Application entry point.
*
* \return Unused (ANSI-C compatibility).
*/
int main(void)
{
/* Initialize the SAM system */
sysclk_init();
board_init();
/* Initialize the console uart */
configure_console();
/* Output example information */
puts(STRING_HEADER);
/* Configure systick for 1 ms */
puts("Configure system tick to get 1ms tick period.\r");
if (SysTick_Config(sysclk_get_cpu_hz() / BLINK_PERIOD)) {
puts("-F- Systick configuration error\r");
while (1);
}
puts("Configure button.\r");
configure_button();
puts("Configure TC.\r");
configure_tc();
printf("Press %s to Start/Stop LED0 blinking.\r\n", BUTTON_0_NAME);
while (1) {
/* Wait for LED to be active */
while (!g_b_led0_active);
/* Toggle LED state if active */
if (g_b_led0_active == 1) {
LED_Toggle(LED0);
printf("1 ");
}
/* Wait for 500ms */
mdelay(500);
}
}
/**
* \brief Test active mode.
*/
static void test_active_mode(void)
{
/* Configure button for exiting from active mode */
configure_button();
g_ul_button_pressed = 0;
/* Select clock for active mode */
user_change_clock(STRING_ACTIVE);
/* Test active mode */
do {
/* Run Fibonacci calculation, n = 10 (may be changed) */
fib(10);
} while (!g_ul_button_pressed);
/* Set default clock and re-configure UART */
set_default_working_clock();
reconfigure_console(g_ul_current_mck, CONF_UART_BAUDRATE);
puts("Exit from active mode.\r");
}
/*---------------------------------------------------------------------------*/
static int
configure(int type, int value)
{
switch(type) {
case SENSORS_HW_INIT:
configure_button();
return 1;
case SENSORS_ACTIVE:
if(value) {
if(!interrupt_enabled) {
timer_set(&debouncetimer, 0);
extint_chan_enable_callback(BUTTON_0_EIC_LINE,
EXTINT_CALLBACK_TYPE_DETECT);
interrupt_enabled = 1;
}
} else {
extint_chan_disable_callback(BUTTON_0_EIC_LINE,
EXTINT_CALLBACK_TYPE_DETECT);
interrupt_enabled = 0;
}
return 1;
}
return 0;
}
/**
* \brief Application entry point for WDT example.
*
* \return Unused (ANSI-C compatibility).
*/
int main(void)
{
uint32_t wdt_mode, timeout_value;
/* Initilize the system */
sysclk_init();
board_init();
/* Configure pins of console UART, LED and push button on board. */
configure_console();
configure_led();
configure_button();
/* Output example information. */
puts(STRING_HEADER);
/* Systick configuration. */
puts("Configure systick to get 1ms tick period.\r");
if (SysTick_Config(sysclk_get_cpu_hz() / 1000)) {
puts("-F- Systick configuration error\r");
}
/* Get timeout value. */
timeout_value = wdt_get_timeout_value(WDT_PERIOD * 1000,
BOARD_FREQ_SLCK_XTAL);
if (timeout_value == WDT_INVALID_ARGUMENT) {
while (1) {
/* Invalid timeout value, error. */
}
}
/* Configure WDT to trigger an interrupt (or reset). */
wdt_mode = WDT_MR_WDFIEN | /* Enable WDT fault interrupt. */
WDT_MR_WDRPROC | /* WDT fault resets processor only. */
WDT_MR_WDDBGHLT | /* WDT stops in debug state. */
WDT_MR_WDIDLEHLT; /* WDT stops in idle state. */
/* Initialize WDT with the given parameters. */
wdt_init(WDT, wdt_mode, timeout_value, timeout_value);
printf("Enable watchdog with %d microseconds period\n\r",
(int)wdt_get_us_timeout_period(WDT, BOARD_FREQ_SLCK_XTAL));
/* Configure and enable WDT interrupt. */
NVIC_DisableIRQ(WDT_IRQn);
NVIC_ClearPendingIRQ(WDT_IRQn);
NVIC_SetPriority(WDT_IRQn, 0);
NVIC_EnableIRQ(WDT_IRQn);
/* Initialize and enable push button (PIO) interrupt. */
pio_handler_set_priority(PUSHBUTTON_PIO, PUSHBUTTON_IRQn, 0);
pio_enable_interrupt(PUSHBUTTON_PIO, PUSHBUTTON_MASK);
printf("Press %s to simulate a deadlock loop.\n\r", PUSHBUTTON_STRING);
while (1) {
if (g_b_systick_event == true) {
g_b_systick_event = false;
/* Toggle LED at the given period. */
if ((g_ul_ms_ticks % BLINK_PERIOD) == 0) {
#if (SAM4E || SAM4N || SAM4C || SAMG)
LED_Toggle(LED0);
#else
LED_Toggle(LED0_GPIO);
#endif
}
/* Restart watchdog at the given period. */
if ((g_ul_ms_ticks % WDT_RESTART_PERIOD) == 0) {
wdt_restart(WDT);
}
}
/* Simulate deadlock when button is pressed. */
if (g_b_button_event == true) {
puts("Program enters infinite loop for triggering watchdog interrupt.\r");
while (1) {
}
}
}
}
int main(void)
{
uint32_t i;
uint32_t ul_error;
volatile uint32_t *p_test_page_data;
uint32_t p_buffer[BUFFER_SIZE];
/* Initialize the system. */
sysclk_init();
board_init();
/* Configure UART for debug message output. */
configure_console();
/* Initialize flash: 6 wait states for flash writing. */
flash_init(FLASH_ACCESS_MODE_128, FLASH_WAIT_STATE_NBR);
/* Configure Push Button. */
configure_button();
/* Output example information. */
puts(STRING_HEADER);
puts("-I- Unlocking the whole flash.\r\n");
/* Unlock the whole flash. */
ul_error = flash_unlock(IFLASH_ADDR, (IFLASH_ADDR + IFLASH_SIZE - 1), 0, 0);
if (FLASH_RC_OK != ul_error) {
puts("Unlock internal flash failed.\r\n");
return 0;
}
/* Perform tests on the test page. */
p_test_page_data = (volatile uint32_t *)TEST_PAGE_ADDRESS;
/* Write page with walking bit pattern (0x00000001, 0x00000002, ...). */
puts("-I- Writing test page with walking bit pattern.\r\n");
for (i = 0; i < BUFFER_SIZE; i++) {
p_buffer[i] = 1 << (i % MAX_SHIFTING_NUMBER);
}
#if (SAM4E || SAM4C || SAMV71)
/**
* The EWP command can only be used in 8 KBytes sector for SAM4E,
* so an erase command is requried before write operation.
*/
ul_error = flash_erase_sector(TEST_PAGE_ADDRESS);
if (ul_error != FLASH_RC_OK) {
printf("-F- Flash erase error %u\n\r", ul_error);
return 0;
}
ul_error = flash_write(TEST_PAGE_ADDRESS, p_buffer,
IFLASH_PAGE_SIZE, 0);
#else
ul_error = flash_write(TEST_PAGE_ADDRESS, p_buffer,
IFLASH_PAGE_SIZE, 1);
#endif
if (FLASH_RC_OK != ul_error) {
puts("Write the test page of internal flash failed.\r\n");
return 0;
}
/* Check page contents. */
puts("-I- Checking page contents.\r\n");
for (i = 0; i < BUFFER_SIZE; i++) {
printf(".");
if (p_test_page_data[i] != (1u << (i % MAX_SHIFTING_NUMBER))) {
puts("The content in the test page isn't written correctly");
return 0;
}
}
puts(" OK! \r\n");
/* Configure Erase pin NOT in Erase mode. */
puts("-I- Configure Erase pin in PIO mode.\r\n");
matrix_set_system_io(PIN_PIO_MODE_MSK);
/**
* Ask the user to close the erase jumper and then open it(200ms minimum).
*/
printf("-I- Please close the erase jumper and then open it ");
printf("at least 200ms later.\r\n");
printf("Then press button %s to go on!\r\n", BUTTON_STRING);
/* Wait until Push Button is pressed. */
while (!g_button_event) {
}
/**
* Disable the PIO line interrupts to eliminate the wrong check of
* key press.
*/
pio_disable_interrupt(PUSH_BUTTON_PIO, PUSH_BUTTON_PIN_MSK);
g_button_event = 0;
/* Read the page again, it should be unchanged. */
puts("-I- Reading the page\r\n");
for (i = 0; i < BUFFER_SIZE; i++) {
printf(".");
if (p_test_page_data[i] != (1u << (i % MAX_SHIFTING_NUMBER))) {
puts("-F- Reading Error! \r\n");
return 0;
}
}
puts("\r\n");
puts("Read OK! Erase is out of function!\r\n");
/* Configure Erase pin as Erase function. */
puts("-I- Configure Erase pin as Erase function\r\n");
matrix_set_system_io(PIN_ERASE_MODE_MSK);
/**
* Ask the user to close the erase jumper and then open it(200ms minimum).
*/
printf("-I- Please close the erase jumper and then open it ");
printf("at least 200ms later.\r\n");
/**
* Remind the users that after closing the erase jumper and then opening
* it, codes are gone.
*/
printf("-I- As the internal flash has been erased and the code can't ");
printf("be executed any more, users can press the reset button on EK ");
printf("and will see there will be no output message any more.\r\n");
while (1) {
}
}