56 lines
839 B
56 lines
839 B
#include <common.h>
|
|
|
|
#include <stdio.h>
|
|
|
|
#include "utils/usart.h"
|
|
#include "utils/timebase.h"
|
|
#include "utils/debounce.h"
|
|
#include "utils/str_utils.h"
|
|
|
|
#include "init.h"
|
|
#include "blink.h"
|
|
|
|
/** IRQ */
|
|
void USART2_IRQHandler(void)
|
|
{
|
|
// RXIE enables also ORE - must handle ORE.
|
|
if (USART2_SR & USART_SR_ORE) {
|
|
USART2_SR &= ~USART_SR_ORE;
|
|
}
|
|
|
|
if (USART2_SR & USART_SR_RXNE) {
|
|
blue_blink();
|
|
|
|
// handle incoming char.
|
|
char c = usart_rx_char(USART2);
|
|
|
|
// echo
|
|
usart_tx_char(USART2, c);
|
|
|
|
USART2_SR ^= USART_SR_RXNE;
|
|
}
|
|
}
|
|
|
|
|
|
/** Init peripherals; Called by startup script, before main() */
|
|
void SystemInit(void)
|
|
{
|
|
init_clock();
|
|
init_systick();
|
|
init_gpios();
|
|
init_usart();
|
|
init_adc();
|
|
init_dac();
|
|
init_pwm1();
|
|
}
|
|
|
|
|
|
int main(void)
|
|
{
|
|
usart_tx_string(USART2, "Hello.\n");
|
|
|
|
while (1) {
|
|
delay_ms(500);
|
|
green_toggle();
|
|
}
|
|
}
|
|
|