From ae1a5d59475c10d2cd7e1c5561b1798e21682ddc Mon Sep 17 00:00:00 2001
From: jakegoodwin <jakegoodwin@tutanota.com>
Date: Fri, 13 Jan 2023 22:47:43 -0800
Subject: [PATCH] set 9600 baud rate, tested and working

---
 avr_usart.c | 29 ++++++++++++++++++++---------
 1 file changed, 20 insertions(+), 9 deletions(-)

diff --git a/avr_usart.c b/avr_usart.c
index bdae0f9..fc833ad 100644
--- a/avr_usart.c
+++ b/avr_usart.c
@@ -8,7 +8,7 @@
 #include <avr/interrupt.h>
 #include <avr/sleep.h>
 #include <util/delay.h>
-#include "avr_at-09.h"
+#include "avr_usart.h"
 
 
 //#############################
@@ -23,14 +23,22 @@ int main() {
     led_blink(); 
     led_blink(); 
     _delay_ms(1000);
+    _delay_ms(1000);
 
     init_usart0(); 
 
     //enable interrupts
     sei();
     
+    unsigned char data[] = "AT+WAKE";
+
     while(1) {
-        led_blink();
+        _delay_ms(1000);
+        //led_blink();
+        for(uint8_t i = 0; i < 7; i++) {
+            tx_usart0(data[i]);
+        }
+        
     }
     
     return 0;
@@ -48,16 +56,19 @@ int main() {
  * Description: init usart0 hardware in async mode
  */
 void init_usart0(void) {
-    DDRB |= (1<<TX_DDR)|(0<<RX_DDR);
-    PORTD |= (0<<TX_PIN)|(0<<RX_PIN); 
+    //DDRB |= (1<<TX_DDR)|(0<<RX_DDR);
+    //PORTD |= (0<<TX_PIN)|(0<<RX_PIN); 
     
     //setup stuff for usart communications.
     
-    //set baud rate, this is 9600Baud with a 1Mhz clock
-    //so it should be equal to 6 or 0x006
-    UBRR0H |= (uint8_t) (BT_UBRR>>8);
-    UBRR0L |= (uint8_t) BT_UBRR;
-    
+    //set baud rate, this is 9600Baud with a 8Mhz clock
+    //UBRR0H |= (uint8_t) (BT_UBRR>>8);
+    //UBRR0L |= (uint8_t) BT_UBRR;
+    UBRR0H |= (uint8_t) (0x33>>8);
+    UBRR0L |= (uint8_t) 0x33;
+
+
+
     //Enable recv and Transmit pins, overrides other uses.
     //IN the usart control and status register 0B
     UCSR0B = (1<<RXEN0) | (1<<TXEN0);