Implement basic UART reading

src/main.c

@@ -3,10 +3,19 @@
 
 #include <stdio.h>
 
+#define MAX_CMDBUF 256
+
 int main(void)
 {
 	unsigned long i;
 	char buf[128];
+	char *cmd;
+
+	// UART command buffer
+	cmd = malloc(MAX_CMDBUF);
+	if (cmd == NULL) {
+		return 1;
+	}
 
 	UART_Init();
 
@@ -16,6 +25,10 @@ int main(void)
 		sprintf(buf, "[CORE] Fetching sensors #%05lu...\r\n", i);
 		UART_Write(buf);
 
+		UART_Read(&cmd, MAX_CMDBUF);
+		sprintf(buf, "[CORE] Checking cmdbuf=\"%s\"\r\n", cmd);
+		UART_Write(buf);
+
 		Sleep(3000);
 	}