From 3554cb60f288edb0a7f59c25ba24a07ecd5156f4 Mon Sep 17 00:00:00 2001
From: jakegoodwin <jakegoodwin@tutanota.com>
Date: Sat, 14 Jan 2023 12:03:16 -0800
Subject: [PATCH] changed params for function defs to use unsigned chars

---
 avr_usart.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/avr_usart.c b/avr_usart.c
index dd800d1..cccf6da 100644
--- a/avr_usart.c
+++ b/avr_usart.c
@@ -16,8 +16,6 @@
 //#############################
 
 int main() {
-    unsigned char* tx_buffer[16];
-    unsigned char* rx_buffer[16];
  
     led_blink();
     led_blink(); 
@@ -31,13 +29,15 @@ int main() {
     sei();
     
     uint8_t buf_len = 12;
-    unsigned char data[12] = "HELLO WORLD\0";
+    //unsigned char data[12] = "snd 12chars\0";
+    unsigned char data[1] = "A";
     
 
     while(1) {
         serial0_write(data, buf_len);
         _delay_ms(1000);
-         
+        serial0_read(data, buf_len);
+        led_blink();     
     }
     
     return 0;
@@ -126,7 +126,7 @@ void serial0_enable_timeouts(uint8_t ms) {
  * Output: None
  * Description:
  */
-void serial0_write(char* buffer, uint8_t write_length) {
+void serial0_write(unsigned char* buffer, uint8_t write_length) {
     for(uint8_t i = 0; i < write_length; i++) {
         tx_usart0(buffer[i]);
     }
@@ -137,7 +137,9 @@ void serial0_write(char* buffer, uint8_t write_length) {
  * Output: None
  * Description: Reads the serial data into a buffer of x length.
  */
-void serial0_read(char* buffer, uint8_t buf_length) {
+void serial0_read(unsigned char* buffer, uint8_t buf_length) {
+    //clear buffer out?
+    buffer = 0;
     for(uint8_t i = 0; i < buf_length; i++) {
         buffer[i] = rx_usart0();
     }
@@ -158,7 +160,7 @@ void serial0_read(char* buffer, uint8_t buf_length) {
  * 6 --> 9600bps !!! 7% error rate
  */
 
-void serial0_set_baud(uint8_t buad) {
+void serial0_set_baud(uint8_t baud) {
      UBRR0H |= (uint8_t) (baud>>8);
      UBRR0L |= (uint8_t) baud;    
 }