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/*
* project.c
*
* Created on: Jan 8, 2023
* Author: bruce
*/
#include "project.h"
#include "LED.h"
#include "systick.h"
#include <stdio.h>
#include "hw4.h"
#include <string.h>
#define PLAYING_STATE (1)
#define PAUSED_STATE (2)
#define STOPPED_STATE (3)
void handle_input(char buffer[], uint8_t *state);
void help();
void next();
void play();
void pause();
void pause_loop();
void stop();
void project_run() {
char buffer[8];
char* cur = buffer;
uint8_t state = STOPPED_STATE;
help();
for (;;) {
if (state == PAUSED_STATE)
pause_loop();
char ch = read_and_print_char_nonblocking();
if (!ch)
continue;
if (ch == '\r') {
*cur = 0;
handle_input(buffer, &state);
cur = buffer;
continue;
}
*cur++ = ch;
}
}
void handle_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 help() {
printf("\r***REMOTE LED CONTROL MENU***\r\n");
printf("Available User Commands:\r\n");
printf("NEXT - Show next song info\r\n");
printf("PLAY - Play the song (LED on)\r\n");
printf("PAUSE - Pause the song (LED flash)\r\n");
printf("STOP - Stop the song (LED off)\r\n");
}
void next() {
// TODO
}
void play() {
LED_On();
}
void pause() {
init_systick();
}
void pause_loop() {
if (check_systick()) {
LED_Toggle();
}
}
void stop() {
LED_Off();
}
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