/**
* \brief SAMD21 SAM-BA Main loop.
* \return Unused (ANSI-C compatibility).
*/
int main(void)
{
#if SAM_BA_INTERFACE == SAM_BA_USBCDC_ONLY || SAM_BA_INTERFACE == SAM_BA_BOTH_INTERFACES
P_USB_CDC pCdc;
#endif
DEBUG_PIN_HIGH;
/* Jump in application if condition is satisfied */
check_start_application();
/* We have determined we should stay in the monitor. */
/* System initialization */
board_init();
__enable_irq();
/* Initialize LEDs */
LED_init();
#if !defined(BOARD_LED_FADE_ENABLED)
LED_on();
#endif
LEDRX_init();
LEDRX_off();
LEDTX_init();
LEDTX_off();
/* Start the sys tick (20 us) */
SysTick_Config(VARIANT_MCK / 50000);
/* If SDCARD_ENABLED defined, read optional external pins and run SD Card bootloader (if enabled).
*/
#if defined(SDCARD_ENABLED)
uint8_t bootloaderMode = SD_BOOTLOADER_MODE_NO_UPDATE;
#if defined(SAM_BA_INTERFACE_USE_PIN)
uint8_t sdcardStatus = SD_BOOTLOADER_NOT_CALLED;
#endif
#if defined(SDCARD_USE_PIN1)
pinConfig(SDCARD_PIN1_PORT, SDCARD_PIN1_PIN, SDCARD_PIN1_CONFIG);
#endif
#if defined(SDCARD_USE_PIN2)
#if !defined(SDCARD_USE_PIN1)
#error "main.c: When SDCARD_USE_PIN2 is defined, SDCARD_USE_PIN1 must also be defined"
#endif
pinConfig(SDCARD_PIN2_PORT, SDCARD_PIN2_PIN, SDCARD_PIN2_CONFIG);
#endif
#if (defined(SDCARD_USE_PIN1) && defined(SDCARD_USE_PIN2))
bool pin1 = isPinActive(SDCARD_PIN1_PORT, SDCARD_PIN1_PIN, SDCARD_PIN1_POLARITY);
bool pin2 = isPinActive(SDCARD_PIN2_PORT, SDCARD_PIN2_PIN, SDCARD_PIN2_POLARITY);
if (pin1) {
bootloaderMode = SD_BOOTLOADER_MODE_UPDATE;
} else if (pin2) {
bootloaderMode = SD_BOOTLOADER_MODE_UPDATE2;
}
#elif defined(SDCARD_USE_PIN1)
if (isPinActive(SDCARD_PIN1_PORT, SDCARD_PIN1_PIN, SDCARD_PIN1_POLARITY)) {
bootloaderMode = SD_BOOTLOADER_MODE_UPDATE;
}
#else
bootloaderMode = SD_BOOTLOADER_MODE_UPDATE;
#endif
if (bootloaderMode != SD_BOOTLOADER_MODE_NO_UPDATE) {
#if defined(SAM_BA_INTERFACE_USE_PIN)
sdcardStatus = sdBootloader(bootloaderMode);
#else
sdBootloader(bootloaderMode);
#endif
}
#endif
/* When using SAM_BA_INTERFACE_USE_PIN, check the pin to determine which SAM-BA interface to use.
*/
#if defined(SAM_BA_INTERFACE_USE_PIN)
uint8_t sambaInterface = SAM_BA_NONE;
pinConfig(SAM_BA_INTERFACE_PIN_PORT, SAM_BA_INTERFACE_PIN_PIN, SAM_BA_INTERFACE_PIN_CONFIG);
if (isPinActive(SAM_BA_INTERFACE_PIN_PORT, SAM_BA_INTERFACE_PIN_PIN, PIN_POLARITY_ACTIVE_LOW)) { // pin is low
#if ((SAM_BA_INTERFACE == SAM_BA_BOTH_INTERFACES) && (SAM_BA_INTERFACE_PIN_POLARITY == PIN_POLARITY_USBCDC_LOW))
sambaInterface = SAM_BA_USBCDC_ONLY;
#elif ((SAM_BA_INTERFACE == SAM_BA_USBCDC_ONLY) && (SAM_BA_INTERFACE_PIN_POLARITY == PIN_POLARITY_ACTIVE_LOW))
sambaInterface = SAM_BA_USBCDC_ONLY;
#elif ((SAM_BA_INTERFACE == SAM_BA_UART_ONLY) && (SAM_BA_INTERFACE_PIN_POLARITY == PIN_POLARITY_ACTIVE_LOW))
sambaInterface = SAM_BA_UART_ONLY;
#endif
} else { // pin is high
#if ((SAM_BA_INTERFACE == SAM_BA_BOTH_INTERFACES) && (SAM_BA_INTERFACE_PIN_POLARITY == PIN_POLARITY_USBCDC_HIGH))
sambaInterface = SAM_BA_USBCDC_ONLY;
#elif ((SAM_BA_INTERFACE == SAM_BA_USBCDC_ONLY) && (SAM_BA_INTERFACE_PIN_POLARITY == PIN_POLARITY_ACTIVE_HIGH))
sambaInterface = SAM_BA_USBCDC_ONLY;
#elif ((SAM_BA_INTERFACE == SAM_BA_UART_ONLY) && (SAM_BA_INTERFACE_PIN_POLARITY == PIN_POLARITY_ACTIVE_HIGH))
sambaInterface = SAM_BA_UART_ONLY;
#endif
}
#endif
/* Check if we should continue with a SAM-BA interface (if compiled and enabled).
* Only show LED_STATUS_FILE_NOT_FOUND if a SAM-BA interface is not available.
* LED_STATUS_FILE_NOT_FOUND occurs if there is no SD Card, no FAT16/FAT32
* filesystem, or no file (UPDATE.BIN or UPDATE2.BIN) in the root directory.
*/
#if defined(SAM_BA_INTERFACE_USE_PIN)
#if defined(SDCARD_ENABLED)
if (sambaInterface == SAM_BA_NONE) {
if (sdcardStatus == SD_BOOTLOADER_FILE_NOT_FOUND) {
LED_status(LED_STATUS_FILE_NOT_FOUND);
} else if (sdcardStatus == SD_BOOTLOADER_NOT_CALLED) {
LED_status(LED_STATUS_NO_SAM_BA_INTERFACE);
}
}
#else
#if (SAM_BA_INTERFACE == SAM_BA_NONE)
LED_status(LED_STATUS_NO_SAM_BA_INTERFACE);
#else
if (sambaInterface == SAM_BA_NONE) {
LED_status(LED_STATUS_NO_SAM_BA_INTERFACE);
}
#endif
#endif
#else
#if (SAM_BA_INTERFACE == SAM_BA_NONE)
LED_status(LED_STATUS_NO_SAM_BA_INTERFACE);
#endif
#endif
/* Enable the appropriate SAM-BA interfaces. When using SAM_BA_INTERFACE_USE_PIN,
* the peripheral and pins are only setup for the selected/enabled interface.
*/
#if defined(SAM_BA_INTERFACE_USE_PIN)
if (sambaInterface == SAM_BA_UART_ONLY) {
#endif
#if SAM_BA_INTERFACE == SAM_BA_UART_ONLY || SAM_BA_INTERFACE == SAM_BA_BOTH_INTERFACES
/* UART is enabled in all cases */
serial_open();
#endif
#if defined(SAM_BA_INTERFACE_USE_PIN)
} else if (sambaInterface == SAM_BA_USBCDC_ONLY) {
#endif
#if SAM_BA_INTERFACE == SAM_BA_USBCDC_ONLY || SAM_BA_INTERFACE == SAM_BA_BOTH_INTERFACES
pCdc = usb_init();
#endif
#if defined(SAM_BA_INTERFACE_USE_PIN)
}
#endif
ledDirection = 4;
DEBUG_PIN_LOW;
/* Wait for a complete enum on usb or a '#' char on serial line */
while (1)
{
#if defined(SAM_BA_INTERFACE_USE_PIN)
if (sambaInterface == SAM_BA_USBCDC_ONLY) {
#endif
#if SAM_BA_INTERFACE == SAM_BA_USBCDC_ONLY || SAM_BA_INTERFACE == SAM_BA_BOTH_INTERFACES
if (pCdc->IsConfigured(pCdc) != 0)
{
main_b_cdc_enable = true;
}
/* Check if a USB enumeration has succeeded and if comm port has been opened */
if (main_b_cdc_enable)
{
sam_ba_monitor_init(SAM_BA_INTERFACE_USBCDC);
/* SAM-BA on USB loop */
while( 1 )
{
sam_ba_monitor_run();
}
}
#endif
#if defined(SAM_BA_INTERFACE_USE_PIN)
} else if (sambaInterface == SAM_BA_UART_ONLY) {
#endif
#if SAM_BA_INTERFACE == SAM_BA_UART_ONLY || SAM_BA_INTERFACE == SAM_BA_BOTH_INTERFACES
/* Check if a '#' has been received */
if (!main_b_cdc_enable && serial_sharp_received())
{
sam_ba_monitor_init(SAM_BA_INTERFACE_USART);
/* SAM-BA on Serial loop */
while(1)
{
sam_ba_monitor_run();
}
}
#endif
#if defined(SAM_BA_INTERFACE_USE_PIN)
}
#endif
}
}
/**
* \brief SAMD21 SAM-BA Main loop.
* \return Unused (ANSI-C compatibility).
*/
int main(void)
{
#if SAM_BA_INTERFACE == SAM_BA_USBCDC_ONLY || SAM_BA_INTERFACE == SAM_BA_BOTH_INTERFACES
P_USB_CDC pCdc;
#endif
DEBUG_PIN_HIGH;
/* Jump in application if condition is satisfied */
check_start_application();
/* We have determined we should stay in the monitor. */
/* System initialization */
board_init();
__enable_irq();
#if SAM_BA_INTERFACE == SAM_BA_UART_ONLY || SAM_BA_INTERFACE == SAM_BA_BOTH_INTERFACES
/* UART is enabled in all cases */
serial_open();
#endif
#if SAM_BA_INTERFACE == SAM_BA_USBCDC_ONLY || SAM_BA_INTERFACE == SAM_BA_BOTH_INTERFACES
pCdc = usb_init();
#endif
DEBUG_PIN_LOW;
/* Initialize LEDs */
LED_init();
LEDRX_init();
LEDRX_off();
LEDTX_init();
LEDTX_off();
/* Start the sys tick (1 ms) */
SysTick_Config(1000);
/* Wait for a complete enum on usb or a '#' char on serial line */
while (1)
{
#if SAM_BA_INTERFACE == SAM_BA_USBCDC_ONLY || SAM_BA_INTERFACE == SAM_BA_BOTH_INTERFACES
if (pCdc->IsConfigured(pCdc) != 0)
{
main_b_cdc_enable = true;
}
/* Check if a USB enumeration has succeeded and if comm port has been opened */
if (main_b_cdc_enable)
{
sam_ba_monitor_init(SAM_BA_INTERFACE_USBCDC);
/* SAM-BA on USB loop */
while( 1 )
{
sam_ba_monitor_run();
}
}
#endif
#if SAM_BA_INTERFACE == SAM_BA_UART_ONLY || SAM_BA_INTERFACE == SAM_BA_BOTH_INTERFACES
/* Check if a '#' has been received */
if (!main_b_cdc_enable && serial_sharp_received())
{
sam_ba_monitor_init(SAM_BA_INTERFACE_USART);
/* SAM-BA on Serial loop */
while(1)
{
sam_ba_monitor_run();
}
}
#endif
}
}
