code de libretour.c effectif

lahouass
1 parent 8da267d4
Showing 1 changed file with 73 additions and 0 deletions Show diff stats
codes/libretour.c
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+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <util/delay.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+
+#define PRESCALER 1024
+#define TIME_SLOT 20
+#define BAUDRATE	103
+
+//// INIT SERIAL /////
+
+void init_serial(void)
+{
+	/* ACHTUNG : we suppose UBRR value < 0xff */
+	/* Not true in all case */
+	uint8_t baudrate = BAUDRATE;
+	/* Set baud rate */
+	UBRR0H = 0;
+	UBRR0L = baudrate;
+	
+	UCSR0B = (1<<TXEN0);
+	/* Set frame format */
+	UCSR0C = 0x06;
+    
+}
+
+//// ENVOI DE MESSAGES /////
+
+void send_serial(unsigned char c)
+{
+	loop_until_bit_is_set(UCSR0A, UDRE0);
+	UDR0 = c;
+}
+
+
+void send_msg2(char Donnee[]){
+ 
+    while (( UCSR0A & (1<<UDRE0))  == 0){};
+            
+            for (int i = 0; i < strlen(Donnee); i++){ 
+                while (( UCSR0A & (1<<UDRE0))  == 0){};
+                UDR0 = Donnee[i]; 
+                if (i == (strlen(Donnee) - 1)){
+                    send_serial('\n');
+                    send_serial('\r');
+                }
+            } 
+}
+
+void send_msg(char Donnee[]){
+        int i=0;
+      for(i=0; i<strlen(Donnee); i++){
+          if (i==strlen(Donnee)-1){
+              send_serial(Donnee[i]);
+              send_serial('\n');
+              send_serial('\r');
+        }
+          else{
+              send_serial(Donnee[i]);
+        } 
+        _delay_ms(100);
+        }
+}
+
+//////// RETOUR /////////
+void retour(char* show_a){
+        send_msg2(show_a);
+}
+  
+