X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=tv_i2c_hack;a=blobdiff_plain;f=serial.c;fp=serial.c;h=0000000000000000000000000000000000000000;hp=3ca641a020c4fd78c51b8a26fea55e9a7093bc41;hb=3b128b470c001555ba1c69ba8b0c96994182f8a1;hpb=efb5b9c4333f6034595b30d7d549fab2b120d9c9

diff --git a/serial.c b/serial.c
deleted file mode 100644
index 3ca641a..0000000
--- a/serial.c
+++ /dev/null
@@ -1,103 +0,0 @@
-#ifndef F_CPU
-#ifdef XTAL
-#define F_CPU	XTAL
-#else
-#warning "compiled for 1mhz internal rc osc. serial comms won't work"
-#define F_CPU	1000000
-#endif
-#endif
-
-#include <stdio.h>
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#include <util/delay.h>
-#include <avr/power.h>
-
-static int uart_send_char(char c, FILE *fp);
-static int uart_get_char(FILE *fp);
-
-#define BUF_SZ	16
-#define BUF_IDX_MASK	(BUF_SZ - 1)
-#define NEXT_IDX(x)	(((x) + 1) & BUF_IDX_MASK)
-static char outbuf[BUF_SZ];
-static volatile unsigned char out_rd, out_wr;
-static char inbuf[BUF_SZ];
-static volatile unsigned char in_rd, in_wr;
-
-static FILE std_stream = FDEV_SETUP_STREAM(uart_send_char, uart_get_char, _FDEV_SETUP_RW);
-
-
-
-void init_serial(long baud)
-{
-	unsigned int ubrr_val = F_CPU / 16 / baud - 1;
-
-	power_usart0_enable();
-
-	/* set baud generator timer reset value */
-	UBRR0H = (unsigned char)(ubrr_val >> 8);
-	UBRR0L = (unsigned char)ubrr_val;
-
-	/* enable rx/tx and recv interrupt */
-	UCSR0B = (1 << RXEN0) | (1 << TXEN0) | (1 << RXCIE0);
-	/* set frame format: 8n1 */
-	UCSR0C = 3 << UCSZ00;
-
-	stdin = stdout = stderr = &std_stream;
-}
-
-int have_input(void)
-{
-	return in_wr != in_rd;
-}
-
-static int uart_send_char(char c, FILE *fp)
-{
-	/*int next;*/
-	if(c == '\n') uart_send_char('\r', fp);
-
-	while((UCSR0A & (1 << UDRE0)) == 0);
-	UDR0 = (unsigned char)c;
-#if 0
-	next = NEXT_IDX(out_wr);
-	while(next == out_rd);
-
-	outbuf[out_wr] = c;
-	out_wr = next;
-
-	/* enable the Tx data register empty interrupt */
-	UCSR0B |= 1 << UDRIE0;
-#endif
-	return 0;
-}
-
-static int uart_get_char(FILE *fp)
-{
-	char c;
-
-	while(in_rd == in_wr);
-
-	c = inbuf[in_rd];
-	in_rd = NEXT_IDX(in_rd);
-	return c;
-}
-
-ISR(USART_RX_vect)
-{
-	char c = UDR0;
-
-	inbuf[in_wr] = c;
-	in_wr = NEXT_IDX(in_wr);
-}
-
-/* USART Tx data register empty (can send more data) */
-ISR(USART_UDRE_vect)
-{
-	if(out_rd != out_wr) {
-		UDR0 = outbuf[out_rd];
-		out_rd = NEXT_IDX(out_rd);
-	} else {
-		/* no more data to send for now, disable the interrupt */
-		UCSR0B &= ~(1 << UDRIE0);
-	}
-}