From: megacz <adam@megacz.com>
Date: Sun, 3 May 2009 23:28:51 +0000 (-0700)
Subject: remove extraneous FtdiBoardSlave.c
X-Git-Url: http://git.megacz.com/?p=slipway.git;a=commitdiff_plain;h=671582a4a63f8c0887b9d09c0b327b208dd5a556

remove extraneous FtdiBoardSlave.c
---

diff --git a/src/edu/berkeley/slipway/FtdiBoardSlave.c b/src/edu/berkeley/slipway/FtdiBoardSlave.c
deleted file mode 100644
index 163e717..0000000
--- a/src/edu/berkeley/slipway/FtdiBoardSlave.c
+++ /dev/null
@@ -1,282 +0,0 @@
-//
-// YOU MUST COMPILE THIS WITH -O3 OR THE AVR WILL NOT BE ABLE TO KEEP UP!!!!
-//
-
-#define F_CPU 12000000
-
-#if !defined(__AVR_AT94K__)
-#error you forgot to put -mmcu=at94k on the command line
-#endif
-
-#include <avr/wdt.h>
-#include <util/delay.h>
-#include <avr/io.h>
-#include <avr/interrupt.h>
-
-volatile int32_t upper = 0;
-
-int err = 0;
-
-void initUART0(unsigned int baudRate, unsigned int doubleRate) {
-  UBRRHI  = (((baudRate) >> 8) & 0x000F); 
-  UBRR0   = ((baudRate) & 0x00FF); 
-  UCSR0B |= ((1 << RXEN0) | (1 << TXEN0) | (1 << RXCIE0)); 
-
-  if (doubleRate)
-    UCSR0A |=  (1 << U2X0);
-  else
-    UCSR0A &= ~(1 << U2X0);
-}
-
-#define BUFSIZE (1024)
-
-long int numread = 0;
-inline void cts(int c) {
-  numread++;
-  if (c) {
-    PORTE &= ~(1 << 7);
-  } else {
-    PORTE |= (1 << 7);
-  }
-}
-
-
-static volatile int sending = 0;
-static volatile int32_t interrupt_count = 0;
-
-// RECV //////////////////////////////////////////////////////////////////////////////
-
-char read_buf[BUFSIZE];
-volatile int read_buf_head;
-volatile int read_buf_tail;
-char write_buf[BUFSIZE];
-volatile int write_buf_head;
-volatile int write_buf_tail;
-
-inline int inc(int x) { x++; if (x>=BUFSIZE) x=0; return x; }
-inline int read_full() { return inc(read_buf_tail)==read_buf_head; }
-inline int abs(int x) { return x<0 ? -x : x; }
-inline int read_size() { return read_buf_tail<read_buf_head ? (read_buf_head-read_buf_tail) : (read_buf_tail-read_buf_head); }
-inline int read_empty() { return read_buf_head==read_buf_tail; }
-inline int read_nearlyFull() {
-  if (read_buf_tail==read_buf_head) return 0;
-  if (read_buf_tail < read_buf_head) return (read_buf_head-read_buf_tail) < (BUFSIZE/2);
-  return (read_buf_tail-read_buf_head) > (BUFSIZE/2);
-}
-
-inline int write_full() { return inc(write_buf_tail)==write_buf_head; }
-inline int write_empty() { return write_buf_head==write_buf_tail; }
-inline int write_nearlyFull() {
-  if (write_buf_tail==write_buf_head) return 0;
-  if (write_buf_tail < write_buf_head) return (write_buf_head-write_buf_tail) < (BUFSIZE/2);
-  return (write_buf_tail-write_buf_head) > (BUFSIZE/2);
-}
-
-int32_t timer = 0;
-
-inline char recv() {
-  int q;
-  char ret;
-
-  PORTE |=  (1<<3);
-  while(read_empty()) cts(1);
-  PORTE &= ~(1<<3);
-
-  ret = read_buf[read_buf_head];
-  read_buf_head = inc(read_buf_head);
-  if (!read_nearlyFull()) cts(1);
-  return ret;
-}
-
-// Interrupt Handlers //////////////////////////////////////////////////////////////////////////////
-
-ISR(SIG_UART0_DATA) {
-  if (write_empty()) {
-    UCSR0B &= ~(1 << UDRIE0);
-    return;
-  }
-  char ret = write_buf[write_buf_head];
-  write_buf_head = inc(write_buf_head);
-  UDR0 = (int)ret;
-  sei();
-}
-
-void send(char c) {
-  PORTE |=  (1<<2);
-  while (write_full());
-  PORTE &= ~(1<<2);
-  write_buf[write_buf_tail] = c;
-  write_buf_tail = inc(write_buf_tail);
-  UCSR0B |= (1 << UDRIE0);
-}
-
-
-void fpga_interrupts(int on) {
-  if (on) {
-    //FISUA = 0x1;
-    FISCR = 0x80;
-    FISUA = 0x01;
-  } else {
-    FISUA = 0;
-    FISCR = 0;
-  }
-}
-
-inline void conf(int z, int y, int x, int d) {
-  FPGAX = x;
-  FPGAY = y;
-  FPGAZ = z;
-  FPGAD = d;
-}
-
-#define TIMERVAL 100
-
-ISR(SIG_FPGA_INTERRUPT0) { 
-  interrupt_count++;
-  sei();
-}
-
-volatile int dead = 0;
-
-ISR(SIG_OVERFLOW1) { 
-  upper = upper + 1;
-
-  if (!dead) {
-    if (PORTE & (1<<5)) PORTE &= ~(1<<5);
-    else                PORTE |=  (1<<5);
-  }
-
-  TCNT1 = 0;
-  sei();
-}
-
-//void die() { dead = 1; cli(); PORTE|=(1<<5); _delay_ms(2000); while(1) { } }
-
-void die(int two, int three, int five) {
-  dead = 1;
-  PORTE &~ ((1<<2) | (1<<3) | (1<<5));
-  if (two) PORTE |= (1<<2);
-  if (three) PORTE |= (1<<3);
-  if (five) PORTE |= (1<<5);
-  while(1) { }
-}
-
-ISR(SIG_UART0_RECV) {
-  if (UCSR0A & (1 << FE0))   die(0, 0, 1);
-  if ((UCSR0A & (1 << OR0))) die(1, 1, 1);
-  if (read_full()) die(1, 0, 1);
-
-  read_buf[read_buf_tail] = UDR0;
-  read_buf_tail = inc(read_buf_tail);
-  if (read_nearlyFull()) cts(0);
-  SREG |= 0x80;
-  sei();
-}
-
-inline int hex(char c) {
-  if (c >= '0' && c <= '9') return (c - '0');
-  if (c >= 'a' && c <= 'f') return ((c - 'a') + 0xa);
-  if (c >= 'A' && c <= 'F') return ((c - 'A') + 0xa);
-  return -1;
-}
-
-int readFPGA() {
-  fpga_interrupts(0);
-  int ret = FISUA;
-  fpga_interrupts(1);
-  return ret;
-}
-
-int main() {
-  DDRE  = (1<<7) | (1<<5) | (1<<3) | (1<<2);
-  PORTE = 0;
-
-  PORTE |=  (1<<5);
-
-  read_buf_head = 0;
-  read_buf_tail = 0;
-  write_buf_head = 0;
-  write_buf_tail = 0;
-  initUART0(1, 0);  //for slow board
-
-  EIMF = 0xFF;
-  SREG = INT0;
-  sei();
-
-  TCNT1 = 0;
-  TIFR&=~(1<<TOV1);
-  TIMSK|=(1<<TOIE1);
-  TCCR1B = 3;
-
-  cts(0);
-  cts(1);
-
-  int x=0, y=0, z=0;
-  int flag=0;
-  for(;;) {
-    int i, d=0;
-    int r = recv();
-    switch(r) {
-      case 0:
-        send('O');
-        send('B');
-        send('I');
-        send('T');
-        send('S');
-        fpga_interrupts(1);
-        if (flag) die(0, 1, 1);
-        break;
-
-      case 1:
-        z = recv();
-        y = recv();
-        x = recv();
-        d = recv();
-        conf(z, y, x, d);
-        break;
-
-      case 2:
-        flag=1;
-        send(readFPGA());
-        break;
-
-      case 3: {
-        int32_t local_interrupt_count = interrupt_count;
-        interrupt_count = 0;
-        send((local_interrupt_count >> 24) & 0xff);
-        send((local_interrupt_count >> 16) & 0xff);
-        send((local_interrupt_count >>  8) & 0xff);
-        send((local_interrupt_count >>  0) & 0xff);
- 
-        int32_t local_timer = TCNT1;
-        int32_t local_upper = upper;
-        TCCR1B = 0;
-        TIFR&=~(1<<TOV1);
-        TIMSK|=(1<<TOIE1);
-        upper = 0;
-        TCNT1 = 0;
-        TCCR1B = 3;
-        send((local_upper >>  8) & 0xff);
-        send((local_upper >>  0) & 0xff);
-        send((local_timer >>  8) & 0xff);
-        send((local_timer >>  0) & 0xff);
-        break;
-      }
-
-        /*
-      case 3:
-        //init_timer();
-        break;
-      case 4:
-        sending = 1;
-        break;
-      case 5:
-        sending = 0;
-        break;
-        */
-    }
-  }
-  return 0;
-
-}  
-