jens/HendiControlFirmware
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- some uart changes

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git-svn-id: http://moon:8086/svn/projects/HendiControl@37 fda53097-d464-4ada-af97-ba876c37ca34
This commit is contained in:
jens
2019-03-02 14:58:42 +00:00
parent c092db8909
commit 46d4de49e1
1 changed files with 9 additions and 8 deletions
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Control/firmware/uart_echo/uart.c
+9 -8
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@@ -12,22 +12,25 @@
#include "message.h" #include "message.h"
static Fifo *g_pFifo = NULL; static Fifo *g_pFifo = NULL;
ISR(USART_UDRE_vect)
{
}
ISR(USART_TX_vect)
{
}
ISR(USART_RX_vect) ISR(USART_RX_vect)
{ {
uint8_t status = UCSR0A; uint8_t status = UCSR0A;
if (status & (1 << RXC0)) if (status & (1 << RXC0))
{ {
uint8_t rx_data = UDR0; uint8_t rx_data = UDR0;
Msg_t msg = {Uart, rx_data}; Msg_t msg = {Uart, rx_data};
fifo_push(g_pFifo, &msg); 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) 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) void uart_putc(char c)
{ {
enterCritical();
while((UCSR0A & (1<<UDRE0)) == 0) while((UCSR0A & (1<<UDRE0)) == 0)
{ {
} }
UDR0 = c; UDR0 = c;
exitCritial();
} }
int uart_putchar(char c, FILE *stream) int uart_putchar(char c, FILE *stream)