- some uart changes

git-svn-id: http://moon:8086/svn/projects/HendiControl@37 fda53097-d464-4ada-af97-ba876c37ca34
2019-03-02 14:58:42 +00:00
parent c092db8909
commit 46d4de49e1
1 changed files with 9 additions and 8 deletions
@@ -12,22 +12,25 @@
 #include "message.h"

 static Fifo *g_pFifo = NULL;
+ISR(USART_UDRE_vect)
+{
+	
+}
+
+ISR(USART_TX_vect)
+{
+	
+}

 ISR(USART_RX_vect)
 {
 	uint8_t status = UCSR0A;
-	
 	if (status & (1 << RXC0))
 	{
 		uint8_t rx_data = UDR0;
 		Msg_t msg = {Uart, rx_data};
 		fifo_push(g_pFifo, &msg);
 	}
-	else
-	{
-		Msg_t msg = {NOP, 0};
-		fifo_push(g_pFifo, &msg);
-	}
 }

 void uart_init(Fifo *pFifo, uint16_t BAUD_PRESCALE)
@@ -48,12 +51,10 @@ void uart_init(Fifo *pFifo, uint16_t BAUD_PRESCALE)

 void uart_putc(char c)
 {
-	enterCritical();
 	while((UCSR0A & (1<<UDRE0)) == 0)
 	{
 	}
 	UDR0 = c;
-	exitCritial();
 }

 int uart_putchar(char c, FILE *stream)