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Changed to simple bit-banging - can be used with all baudrates now.

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This commit is contained in:
Martin Mueller
2005-05-25 21:38:56 +00:00
parent e8f50496f0
commit f1c9cea489
1 changed files with 43 additions and 0 deletions
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sw/airborne/autopilot/test/uart_tunnel.c
+43
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@@ -8,6 +8,19 @@
#include "../uart.h"
#include "../timer.h"
#define UART_PC_PORT PORTE
#define UART_PC_DDR DDRE
#define UART_PC_PIN PINE
#define UART_PC_TX 1
#define UART_PC_RX 0
#define UART_PERPH_PORT PORTD
#define UART_PERPH_DDR DDRD
#define UART_PERPH_PIN PIND
#define UART_PERPH_TX 3
#define UART_PERPH_RX 2
void on_uart0_rx(uint8_t c) {
uart1_transmit(c);
}
@@ -20,6 +33,36 @@ ReceiveUart0(on_uart0_rx)
ReceiveUart1(on_uart1_rx)
int main( void ) {
/* setup PC_TX as output */
UART_PC_DDR |= _BV(UART_PC_TX);
/* setup PC_RX as input, no pullup */
UART_PC_DDR &= ~_BV(UART_PC_RX);
UART_PC_PORT &= ~_BV(UART_PC_RX);
/* setup PERPH_TX as output */
UART_PERPH_DDR |= _BV(UART_PERPH_TX);
/* setup PERPH_RX as input, no pullup */
UART_PERPH_DDR &= ~_BV(UART_PERPH_RX);
UART_PERPH_PORT &= ~_BV(UART_PERPH_RX);
while(1)
{
if (bit_is_set(UART_PERPH_PIN, UART_PERPH_RX)) {
sbi(UART_PC_PORT, UART_PC_TX);
} else {
cbi(UART_PC_PORT, UART_PC_TX);
}
if (bit_is_set(UART_PC_PIN, UART_PC_RX)) {
sbi(UART_PERPH_PORT, UART_PERPH_TX);
} else {
cbi(UART_PERPH_PORT, UART_PERPH_TX);
}
}
uart0_init();
uart1_init();