src/avr_usart.c

@@ -11,13 +11,18 @@
 #include "avr_usart.h"
 
 
-
 //#############################
 //Globals
 //#############################
 
 
-int demo() {
+int main() {
+ 
+    led_blink();
+    led_blink(); 
+    led_blink(); 
+    _delay_ms(1000);
+
     init_usart0(); 
 
     //enable even parity
@@ -31,6 +36,7 @@ int demo() {
     uint8_t data_cmd_len = 2;
 
     while(1) {
+        led_blink();
         
         serial0_write(data, data_len);
 
@@ -225,3 +231,22 @@ void serial0_set_baud(uint8_t baud) {
      UBRR0H |= (uint8_t) (baud>>8);
      UBRR0L |= (uint8_t) baud;    
 }
+
+
+/*
+ * Input: None
+ * Output: None
+ * Description: Toggles the pin for the LED indicator.
+ */
+static void led_blink(void) {
+    //Set the DDR for output.
+    DDRC |= (1<<LED_PIN);
+
+    PORTC ^= (1<<LED_PIN);
+    _delay_ms(250);
+    PORTC ^= (1<<LED_PIN);
+    _delay_ms(250);
+    
+}
+
+

src/avr_usart.h

@@ -1,8 +1,8 @@
 /*
  * Author: Jake Goodwin
  * Date: 2023
- * Description: A USART library for the atmega series of chips
- * Filename: avr_usart.h
+ * Description: AT-09 Bluetooth module library for AVR micro crontrollers.
+ * Filename: avr_at-09.h
  */
 //#define __AVR_ATmega328P__
 #include <inttypes.h>
@@ -51,15 +51,13 @@
 #define CARRIAGE_RETURN 1
 #define LINE_FEED 1
 
-#if DEBUG == 1
-#define debug(data, data_len) serial0_write(data, data_len)
-#else
-#define debug(data, data_len)
-#endif
+
 
 //#############################
 //FUNCTION PROTOTYPES
 //#############################
+static void led_blink(void);
+
 void init_usart0(void);
 void tx_usart0(unsigned char data);
 unsigned char rx_usart0(void);