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/*
* remote_control.c
*
* Created on: Nov 4, 2025
* Author: sowgro
*/
static char buffer[80];
static char* cur = buffer;
static uint8_t state = STOPPED_STATE;
void remote_control_start() {
NVIC_EnableIRQ (USART2_IRQn);
USART2->CR1 |= USART_CR1_RXNEIE; // 1 << 5
help();
}
void remote_control_loop() {
}
void remote_control_stop() {
}
static void parse_input(char buffer[], uint8_t *state) {
if (!strcmp(buffer, "HELP")) {
help();
}
else if (!strcmp(buffer, "NEXT")) {
next();
}
else if (!strcmp(buffer, "PLAY")) {
play();
*state = PLAYING_STATE;
}
else if (!strcmp(buffer, "PAUSE")) {
pause();
*state = PAUSED_STATE;
}
else if (!strcmp(buffer, "STOP")) {
stop();
*state = STOPPED_STATE;
}
else {
printf("Unknown command \"%s\"\n\r", buffer);
}
}
void USART2_IRQHandler() {
int ch = USART_Read(USART2);
remote_control_parse_input(ch);
if (!ch)
continue;
if (ch == '\r') {
*cur = 0;
handle_input(buffer, &state);
cur = buffer;
continue;
}
if (ch == 0x08 || ch == 0x7F) {
if (cur <= buffer)
continue;
cur--;
printf("\b \b");
continue;
}
*cur++ = ch;
}
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