bool avr_init(void) {
/* Enable power reduction on all peripheral modules. */
PRR0 = (1 << PRTWI) | // Disable TWI.
(1 << PRTIM2) | // Disable TIMER2.
(1 << PRTIM0) | // Disable TIMER0.
(1 << PRTIM1) | // Disable TIMER1.
(1 << PRSPI) | // Disable SPI.
(1 << PRADC); // Disable ADC.
PRR1 = (1 << PRUSB) | // Disable USB.
(1 << PRTIM3) | // Disable TIMER3.
(1 << PRUSART1); // Disable USART1.
ACSR |= (1 << ACD); // Disable Analog Comparator.
DIDR0 = (1 << ADC7D) | // Disable digital input buffer for analog input pins.
(1 << ADC6D) | // Disable digital input buffer for analog input pins.
(1 << ADC5D) | // Disable digital input buffer for analog input pins.
(1 << ADC4D); // Disable digital input buffer for analog input pins.
/* Initialize the VRT Runtime Framework. */
if (true != vrt_init()) {
} else if (true != vrt_mem_init()) {
} else if (true != vrt_mem_add_partition(partition_buffer1, BLOCK_SIZE_1, BLOCK_COUNT_1, &partition1)) {
} else if (true != vrt_mem_add_partition(partition_buffer2, BLOCK_SIZE_2, BLOCK_COUNT_2, &partition2)) {
} else if (true != vrt_timer_init()) {
} else {
/* AVR successfully initialized. */
LED_INIT();
return true;
}
return false;
}
void
VRT_init_dir_random(struct cli *cli, struct director **bp, int idx,
const void *priv)
{
vrt_init(cli, bp, idx, priv, c_random);
}
void
VRT_init_dir_client(struct cli *cli, struct director **bp, int idx,
const void *priv)
{
vrt_init(cli, bp, idx, priv, c_client);
}
void main(void) {
#else
int main(void) {
#endif
/* Ensure that the watchdog is not running. */
wdt_disable();
/* Initialize AVR peripheral modules. */
(bool)avr_init();
/* Check if the RX and TX pins are shorted. If they are shorted, the RZUSBSTICK
* shall start the bootloader. If not, continue to verify if the application
* requested to enter the bootloader.
*/
/* Check if the application has requested to enter the bootloader. */
if ((BOOT_PIN & (1 << BOOT_RX)) != (1 << BOOT_RX)) {
/* Check that RX goes high when TX is pulled high. */
BOOT_PORT |= (1 << BOOT_TX);
nop();
nop();
nop();
nop();
if ((BOOT_PIN & (1 << BOOT_RX)) != (1 << BOOT_RX)) {
start_application();
}
} else {
/* Check if the application has requested to enter the bootloader. */
uint8_t volatile magic_value = 0xAA;
EEGET(magic_value, EE_BOOT_MAGIC_ADR);
if (EE_BOOT_MAGIC_VALUE != magic_value) {
start_application();
} else {
EEPUT(EE_BOOT_MAGIC_ADR, 0xFF);
}
}
/* Set the interrupt vectors to the bootloader, initialize the LEDs and the
* VRT kernel.
*/
ENTER_CRITICAL_REGION();
uint8_t temp_mcucr = MCUCR;
MCUCR = (1 << IVCE);
MCUCR = (1 << IVSEL);
MCUCR = temp_mcucr;
LEAVE_CRITICAL_REGION();
LED_INIT();
vrt_init();
if (true != eep_init()) {
error_handler();
} else if (true != cmd_if_init()) {
error_handler();
}
LED_ORANGE_ON();
/* Enable Interrupts. */
sei();
/* Enter the endless application loop. */
for (;;) {
vrt_dispatch_event();
usb_task();
}
}