1 files changed, 72 insertions, 0 deletions
diff --git a/project/Core/Src/Project/remote_control.c b/project/Core/Src/Project/remote_control.c
new file mode 100644
index 0000000..905f966
--- /dev/null
+++ b/project/Core/Src/Project/remote_control.c
@@ -0,0 +1,72 @@
+/*
+ * 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;
+}
+
+