Add USART functions

Add USART functions
Add _delay_s makro

Author: LDprg

glob_def.h

@@ -10,11 +10,18 @@
 #define GLOB_DEF_H_
 
 #include <stdbool.h>
+#include <stddef.h>
 
 #ifndef F_CPU
     #define F_CPU 16000000UL	// 16 MHZ
 #endif /* F_CPU */
 
+#ifndef	BAUD
+	#define BAUD 9600UL
+#endif /* BAUD */
+
+#define _delay_s(__s) _delay_ms((__s)*1000)
+
 #define BIT(x) (1 << (x))
 
 #define _ON(x, y) (x |= BIT(y))

shield_def.h

@@ -5,12 +5,12 @@
  *  Author: LD
  */ 
 
-#include "uno_def.h"
-#include "glob_def.h"
-
 #ifndef SHIELD_DEF_H_
 #define SHIELD_DEF_H_
 
+#include "glob_def.h"
+#include "uno_def.h"
+
 // LEDs
 #define D1 P13
 #define D2 P12

uno_def.c

@@ -0,0 +1,88 @@
+/*
+ * uno_def.c
+ *
+ * Created: 18.12.2021 11:56:46
+ *  Author: LD
+ */ 
+#include "uno_def.h"
+#include <avr/io.h>
+
+void usart_std_init()
+{
+	UBRR0 = UBRR_VALUE;	
+		
+	USART_TRANSMIT_ENABLE();
+	USART_RECIVE_ENABLE();
+	
+	_ON(UCSR0C, UCSZ01);
+	_ON(UCSR0C, UCSZ00);
+}
+
+void usart_init(USART_MODE _mode, USART_CHAR_SIZE _charsize, USART_STOP_BIT _stopbit, USART_PARITY _parity)
+{
+	UBRR0 = UBRR_VALUE;
+	
+	USART_TRANSMIT_ENABLE();
+	USART_RECIVE_ENABLE();
+	
+	_SET(_mode,UCSR0C, UMSEL00);
+	_SET(_stopbit,UCSR0C, USBS0);
+	
+	switch(_charsize)
+	{
+		default:
+		case BIT5:
+			break;
+		case BIT6:
+			_ON(UCSR0C, UCSZ00);
+			break;
+		case BIT9:
+			_ON(UCSR0C, UCSZ02);
+		case BIT8:
+			_ON(UCSR0C, UCSZ00);
+		case BIT7:
+			_ON(UCSR0C, UCSZ01);	
+			break;
+	}	
+	
+	switch(_parity)
+	{
+		default:
+		case DISABLED:
+			break;
+		case EVEN:
+			_ON(UCSR0C, UPM00);
+		case ODD:
+			_ON(UCSR0C, UPM01);
+			break;
+	}
+	
+	_ON(UCSR0C, UCSZ01);
+	_ON(UCSR0C, UCSZ00);
+}
+
+char usart_getc()
+{
+	while(USART_RECIVE_COMPLETE);
+	return UDR0;	
+}
+
+char usart_getc_ifready()
+{
+	if(!USART_RECIVE_COMPLETE)
+		return UDR0;
+	else
+		return 0;
+}
+
+void usart_setc(char c)
+{
+	while(USART_READY);	
+	UDR0 = c;
+}
+
+void usart_setc_ifready(char c)
+{
+	if(!USART_READY)
+		UDR0 = c;
+}

uno_def.h

@@ -9,6 +9,9 @@
 #ifndef UNO_DEF_H_
 #define UNO_DEF_H_
 
+#include "glob_def.h"
+#include <util/setbaud.h>
+
 // LED
 #define LED P13
 #define _LED _P13
@@ -107,4 +110,51 @@
 #define _P1_ DDRD
 #define _P0_ DDRD
 
+#define USART_READY _GET(UCSR0A, UDRE0)
+#define USART_RECIVE_COMPLETE _GET(UCSR0A, RXC0)
+#define USART_RECIVE_ENABLE() _ON(UCSR0B, RXEN0)
+#define USART_RECIVE_DISABLE() _OFF(UCSR0B, RXEN0)
+#define USART_TRANSMIT_COMPLETE _GET(UCSR0A, TXC0)
+#define USART_TRANSMIT_ENABLE() _ON(UCSR0B, TXEN0)
+#define USART_TRANSMIT_DISABLE() _OFF(UCSR0B, TXEN0)
+
+#define USART_ENABLE_INT_RX() _ON(UCSR0B, RXCIE0)
+#define USART_ENABLE_INT_TX() _ON(UCSR0B, TXCIE0)
+#define USART_ENABLE_INT_UDR() _ON(UCSR0B, UDRIE0)
+
+typedef enum 
+{
+	DISABLED,
+	EVEN,
+	ODD
+} USART_PARITY;
+	
+typedef enum 
+{
+	ONE = 0,
+	TWO = 1
+} USART_STOP_BIT;
+
+typedef enum 
+{
+	ASYNC = 0,
+	SYNC = 1
+} USART_MODE;
+
+typedef enum 
+{
+	BIT5,
+	BIT6,
+	BIT7,
+	BIT8,
+	BIT9
+} USART_CHAR_SIZE;
+
+void usart_std_init();
+void usart_init(USART_MODE _mode, USART_CHAR_SIZE _charsize, USART_STOP_BIT _stopbit, USART_PARITY _parity);
+char usart_getc();
+char usart_getc_ifready();
+void usart_setc(char c);
+void usart_setc_ifready(char c);
+
 #endif /* UNO_DEF_H_ */