code cleanup, dropped the sniffer

[tv_i2c_hack] / serial.c

diff --git a/serial.c b/serial.c
deleted file mode 100644 (file)
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);
-       }
-}