ccdbg-memory.c \
ccdbg-rom.c \
ccdbg-state.c \
+ cc-usb.c \
+ cc-usb.h \
+ cc-bitbang.c \
+ cc-bitbang.h \
cp-usb.c \
cp-usb-async.c
--- /dev/null
+/*
+ * Copyright © 2009 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <time.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "ccdbg-debug.h"
+#include "cc-bitbang.h"
+
+#define CP_USB_ASYNC
+
+#ifdef CP_USB_ASYNC
+#include "cp-usb-async.h"
+#else
+#include "cp-usb.h"
+#endif
+
+struct cc_bitbang {
+#ifdef CP_USB_ASYNC
+ struct cp_usb_async *cp_async;
+#else
+ struct cp_usb *cp;
+#endif
+};
+
+static uint32_t cc_clock_us = CC_CLOCK_US;
+static uint32_t cc_reset_us = CC_RESET_US;
+
+void
+cc_bitbang_set_clock(uint32_t us)
+{
+ cc_clock_us = us;
+}
+
+void
+cc_bitbang_half_clock(struct cc_bitbang *bb)
+{
+ struct timespec req, rem;
+ req.tv_sec = (cc_clock_us / 2) / 1000000;
+ req.tv_nsec = ((cc_clock_us / 2) % 1000000) * 1000;
+ nanosleep(&req, &rem);
+}
+
+void
+cc_bitbang_wait_reset(struct cc_bitbang *bb)
+{
+ struct timespec req, rem;
+
+ cc_bitbang_sync(bb);
+ req.tv_sec = (cc_reset_us) / 1000000;
+ req.tv_nsec = ((cc_reset_us) % 1000000) * 1000;
+ nanosleep(&req, &rem);
+}
+
+struct cc_bitbang *
+cc_bitbang_open(void)
+{
+ struct cc_bitbang *bb;
+
+ bb = calloc(sizeof (struct cc_bitbang), 1);
+ if (!bb) {
+ perror("calloc");
+ return NULL;
+ }
+#ifdef CP_USB_ASYNC
+ bb->cp_async = cp_usb_async_open();
+ if (!bb->cp_async) {
+ free (bb);
+ return NULL;
+ }
+#else
+ bb->cp = cp_usb_open ();
+ if (!bb->cp) {
+ free (bb);
+ return NULL;
+ }
+#endif
+ return bb;
+}
+
+void
+cc_bitbang_close(struct cc_bitbang *bb)
+{
+#ifdef CP_USB_ASYNC
+ cp_usb_async_close(bb->cp_async);
+#else
+ cp_usb_close(bb->cp);
+#endif
+ free (bb);
+}
+
+void
+cc_bitbang_debug_mode(struct cc_bitbang *bb)
+{
+ /* force two rising clocks while holding RESET_N low */
+ ccdbg_debug(CC_DEBUG_COMMAND, "#\n");
+ ccdbg_debug(CC_DEBUG_COMMAND, "# Debug mode\n");
+ ccdbg_debug(CC_DEBUG_COMMAND, "#\n");
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_DATA );
+ cc_bitbang_wait_reset(bb);
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA );
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_DATA );
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA );
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_DATA|CC_RESET_N);
+ cc_bitbang_wait_reset(bb);
+}
+
+void
+cc_bitbang_reset(struct cc_bitbang *bb)
+{
+ ccdbg_debug(CC_DEBUG_COMMAND, "#\n");
+ ccdbg_debug(CC_DEBUG_COMMAND, "# Reset\n");
+ ccdbg_debug(CC_DEBUG_COMMAND, "#\n");
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA );
+ cc_bitbang_wait_reset(bb);
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA );
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA );
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA );
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
+ cc_bitbang_wait_reset(bb);
+}
+
+int
+cc_bitbang_write(struct cc_bitbang *bb, uint8_t mask, uint8_t value)
+{
+#ifdef CP_USB_ASYNC
+ cp_usb_async_write(bb->cp_async, mask, value);
+#else
+ cp_usb_write(bb->cp, mask, value);
+#endif
+ return 0;
+}
+
+void
+cc_bitbang_read(struct cc_bitbang *bb, uint8_t *valuep)
+{
+#ifdef CP_USB_ASYNC
+ cp_usb_async_read(bb->cp_async, valuep);
+#else
+ *valuep = cp_usb_read(bb->cp);
+#endif
+}
+
+void
+cc_bitbang_sync(struct cc_bitbang *bb)
+{
+#ifdef CP_USB_ASYNC
+ cp_usb_async_sync(bb->cp_async);
+#endif
+}
+
+static char
+is_bit(uint8_t get, uint8_t mask, char on, uint8_t bit)
+{
+ if (mask&bit) {
+ if (get&bit)
+ return on;
+ else
+ return '.';
+ } else
+ return '-';
+}
+
+void
+cc_bitbang_print(char *format, uint8_t mask, uint8_t set)
+{
+ ccdbg_debug (CC_DEBUG_BITBANG, format,
+ is_bit(set, mask, 'C', CC_CLOCK),
+ is_bit(set, mask, 'D', CC_DATA),
+ is_bit(set, mask, 'R', CC_RESET_N));
+}
+
+void
+cc_bitbang_send(struct cc_bitbang *bb, uint8_t mask, uint8_t set)
+{
+ cc_bitbang_write(bb, mask, set);
+ cc_bitbang_print("%c %c %c\n", mask, set);
+ cc_bitbang_half_clock(bb);
+}
+
+void
+cc_bitbang_send_bit(struct cc_bitbang *bb, uint8_t bit)
+{
+ if (bit) bit = CC_DATA;
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|bit|CC_RESET_N);
+ cc_bitbang_send(bb, CC_CLOCK|CC_DATA|CC_RESET_N, bit|CC_RESET_N);
+}
+
+void
+cc_bitbang_send_byte(struct cc_bitbang *bb, uint8_t byte)
+{
+ int bit;
+ ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Send Byte 0x%02x\n#\n", byte);
+ for (bit = 7; bit >= 0; bit--) {
+ cc_bitbang_send_bit(bb, (byte >> bit) & 1);
+ if (bit == 3)
+ ccdbg_debug(CC_DEBUG_BITBANG, "\n");
+ }
+ cc_bitbang_sync(bb);
+}
+
+void
+cc_bitbang_send_bytes(struct cc_bitbang *bb, uint8_t *bytes, int nbytes)
+{
+ while (nbytes--)
+ cc_bitbang_send_byte(bb, *bytes++);
+}
+
+void
+cc_bitbang_recv_bit(struct cc_bitbang *bb, int first, uint8_t *bit)
+{
+ uint8_t mask = first ? CC_DATA : 0;
+
+ cc_bitbang_send(bb, CC_CLOCK|mask|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
+ cc_bitbang_read(bb, bit);
+ cc_bitbang_send(bb, CC_CLOCK| CC_RESET_N, CC_RESET_N);
+}
+
+void
+cc_bitbang_recv_byte(struct cc_bitbang *bb, int first, uint8_t *bytep)
+{
+ uint8_t byte = 0;
+ uint8_t bits[8];
+ int bit;
+
+ ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Recv byte\n#\n");
+ for (bit = 0; bit < 8; bit++) {
+ cc_bitbang_recv_bit(bb, first, &bits[bit]);
+ first = 0;
+ }
+ cc_bitbang_sync(bb);
+ for (bit = 0; bit < 8; bit++) {
+ byte = byte << 1;
+ byte |= (bits[bit] & CC_DATA) ? 1 : 0;
+ cc_bitbang_print("#\t%c %c %c\n", CC_DATA, bits[bit]);
+ if (bit == 3)
+ ccdbg_debug(CC_DEBUG_BITBANG, "\n");
+ }
+ ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Recv 0x%02x\n#\n", byte);
+ *bytep = byte;
+}
+
+void
+cc_bitbang_recv_bytes(struct cc_bitbang *bb, uint8_t *bytes, int nbytes)
+{
+ int i;
+ int first = 1;
+ for (i = 0; i < nbytes; i++) {
+ cc_bitbang_recv_byte(bb, first, &bytes[i]);
+ first = 0;
+ }
+}
+
--- /dev/null
+/*
+ * Copyright © 2009 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _CC_BITBANG_H_
+#define _CC_BITBANG_H_
+
+#include <stdint.h>
+
+#define CC_CLOCK 0x1
+#define CC_DATA 0x2
+#define CC_RESET_N 0x4
+#define CC_CLOCK_US (2)
+
+/* Telemetrum has a 10k pull-up to 3.3v, a 0.001uF cap to ground
+ * and a 2.7k resistor to the reset line. This takes about 6us
+ * to settle, so we'll wait longer than that after changing the reset line
+ */
+#define CC_RESET_US (12)
+
+struct cc_bitbang;
+
+void
+cc_bitbang_set_clock(uint32_t us);
+
+void
+cc_bitbang_half_clock(struct cc_bitbang *bb);
+
+void
+cc_bitbang_wait_reset(struct cc_bitbang *bb);
+
+struct cc_bitbang *
+cc_bitbang_open(void);
+
+void
+cc_bitbang_close(struct cc_bitbang *bb);
+
+void
+cc_bitbang_debug_mode(struct cc_bitbang *bb);
+
+void
+cc_bitbang_reset(struct cc_bitbang *bb);
+
+int
+cc_bitbang_write(struct cc_bitbang *bb, uint8_t mask, uint8_t value);
+
+void
+cc_bitbang_read(struct cc_bitbang *bb, uint8_t *valuep);
+
+void
+cc_bitbang_sync(struct cc_bitbang *bb);
+
+void
+cc_bitbang_print(char *format, uint8_t mask, uint8_t set);
+
+void
+cc_bitbang_print(char *format, uint8_t mask, uint8_t set);
+
+void
+cc_bitbang_send(struct cc_bitbang *bb, uint8_t mask, uint8_t set);
+
+void
+cc_bitbang_send_bit(struct cc_bitbang *bb, uint8_t bit);
+
+void
+cc_bitbang_send_byte(struct cc_bitbang *bb, uint8_t byte);
+
+void
+cc_bitbang_send_bytes(struct cc_bitbang *bb, uint8_t *bytes, int nbytes);
+
+void
+cc_bitbang_recv_bit(struct cc_bitbang *bb, int first, uint8_t *bit);
+
+void
+cc_bitbang_recv_byte(struct cc_bitbang *bb, int first, uint8_t *bytep);
+
+void
+cc_bitbang_recv_bytes(struct cc_bitbang *bb, uint8_t *bytes, int nbytes);
+
+#endif /* _CC_BITBANG_H_ */
--- /dev/null
+/*
+ * Copyright © 2009 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <poll.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <termios.h>
+#include "ccdbg-debug.h"
+#include "cc-usb.h"
+
+
+#define CC_NUM_READ 16
+#define CC_BUF 1024
+#define DEFAULT_TTY "/dev/ttyACM0"
+
+struct cc_read {
+ uint8_t *buf;
+ int len;
+};
+
+struct cc_usb {
+ int fd;
+ uint8_t in_buf[CC_BUF];
+ int in_count;
+ uint8_t out_buf[CC_BUF];
+ int out_count;
+ struct cc_read read_buf[CC_NUM_READ];
+ int read_count;
+};
+
+#define NOT_HEX 0xff
+
+static uint8_t
+cc_hex_nibble(uint8_t c)
+{
+ if ('0' <= c && c <= '9')
+ return c - '0';
+ if ('a' <= c && c <= 'f')
+ return c - 'a' + 10;
+ if ('A' <= c && c <= 'F')
+ return c - 'A' + 10;
+ return NOT_HEX;
+}
+
+/*
+ * Take raw input bytes, parse them as hex
+ * and write them to the waiting buffer
+ */
+static void
+cc_handle_in(struct cc_usb *cc)
+{
+ uint8_t h, l;
+ int in_pos;
+ int read_pos;
+
+ in_pos = 0;
+ read_pos = 0;
+ while (read_pos < cc->read_count && in_pos < cc->in_count) {
+ /*
+ * Skip to next hex character
+ */
+ while (in_pos < cc->in_count &&
+ cc_hex_nibble(cc->in_buf[in_pos]) == NOT_HEX)
+ in_pos++;
+ /*
+ * Make sure we have two characters left
+ */
+ if (cc->in_count - in_pos < 2)
+ break;
+ /*
+ * Parse hex number
+ */
+ h = cc_hex_nibble(cc->in_buf[in_pos]);
+ l = cc_hex_nibble(cc->in_buf[in_pos+1]);
+ if (h == NOT_HEX || l == NOT_HEX) {
+ fprintf(stderr, "hex read error\n");
+ break;
+ }
+ in_pos += 2;
+ /*
+ * Store hex number
+ */
+ *cc->read_buf[read_pos].buf++ = (h << 4) | l;
+ if (--cc->read_buf[read_pos].len <= 0)
+ read_pos++;
+ }
+
+ /* Move remaining bytes to the start of the input buffer */
+ if (in_pos) {
+ memmove(cc->in_buf, cc->in_buf + in_pos,
+ cc->in_count - in_pos);
+ cc->in_count -= in_pos;
+ }
+
+ /* Move pending reads to the start of the array */
+ if (read_pos) {
+ memmove(cc->read_buf, cc->read_buf + read_pos,
+ (cc->read_count - read_pos) * sizeof (cc->read_buf[0]));
+ cc->read_count -= read_pos;
+ }
+
+ /* Once we're done reading, flush any pending input */
+ if (cc->read_count == 0)
+ cc->in_count = 0;
+}
+
+static void
+cc_usb_dbg(int indent, uint8_t *bytes, int len)
+{
+ int eol = 1;
+ int i;
+ uint8_t c;
+ while (len--) {
+ c = *bytes++;
+ if (eol) {
+ for (i = 0; i < indent; i++)
+ ccdbg_debug(CC_DEBUG_BITBANG, " ");
+ eol = 0;
+ }
+ switch (c) {
+ case '\r':
+ ccdbg_debug(CC_DEBUG_BITBANG, "^M");
+ break;
+ case '\n':
+ eol = 1;
+ default:
+ ccdbg_debug(CC_DEBUG_BITBANG, "%c", c);
+ }
+ }
+}
+
+/*
+ * Flush pending writes, fill pending reads
+ */
+void
+cc_usb_sync(struct cc_usb *cc)
+{
+ int ret;
+ struct pollfd fds;
+ int timeout;
+
+ fds.fd = cc->fd;
+ for (;;) {
+ if (cc->read_count || cc->out_count)
+ timeout = -1;
+ else
+ timeout = 0;
+ fds.events = 0;
+ if (cc->in_count < CC_BUF)
+ fds.events |= POLLIN;
+ if (cc->out_count)
+ fds.events |= POLLOUT;
+ ret = poll(&fds, 1, timeout);
+ if (ret == 0)
+ break;
+ if (ret < 0) {
+ perror("poll");
+ break;
+ }
+ if (fds.revents & POLLIN) {
+ ret = read(cc->fd, cc->in_buf + cc->in_count,
+ CC_BUF - cc->in_count);
+ if (ret > 0) {
+ cc_usb_dbg(24, cc->in_buf + cc->in_count, ret);
+ cc->in_count += ret;
+ cc_handle_in(cc);
+ }
+ }
+ if (fds.revents & POLLOUT) {
+ ret = write(cc->fd, cc->out_buf,
+ cc->out_count);
+ if (ret > 0) {
+ cc_usb_dbg(0, cc->out_buf, ret);
+ memmove(cc->out_buf,
+ cc->out_buf + ret,
+ cc->out_count - ret);
+ cc->out_count -= ret;
+ }
+ }
+ }
+}
+
+static void
+cc_usb_printf(struct cc_usb *cc, char *format, ...)
+{
+ char buf[1024], *b;
+ va_list ap;
+ int ret, this_time;
+
+ /* sprintf to a local buffer */
+ va_start(ap, format);
+ ret = vsnprintf(buf, sizeof(buf), format, ap);
+ va_end(ap);
+ if (ret > sizeof(buf)) {
+ fprintf(stderr, "printf overflow for format %s\n",
+ format);
+ }
+
+ /* flush local buffer to the wire */
+ b = buf;
+ while (ret > 0) {
+ this_time = ret;
+ if (this_time > CC_BUF - cc->out_count)
+ this_time = CC_BUF - cc->out_count;
+ memcpy(cc->out_buf + cc->out_count, b, this_time);
+ cc->out_count += this_time;
+ ret -= this_time;
+ while (cc->out_count >= CC_BUF)
+ cc_usb_sync(cc);
+ }
+}
+
+int
+cc_usb_send_bytes(struct cc_usb *cc, uint8_t *bytes, int len)
+{
+ int this_len;
+ int ret = len;
+
+ while (len) {
+ this_len = len;
+ if (this_len > 8)
+ this_len = 8;
+ len -= this_len;
+ cc_usb_printf(cc, "P");
+ while (this_len--)
+ cc_usb_printf (cc, " %02x", (*bytes++) & 0xff);
+ cc_usb_printf(cc, "\n");
+ }
+ return ret;
+}
+
+static void
+cc_queue_read(struct cc_usb *cc, uint8_t *buf, int len)
+{
+ struct cc_read *read_buf;
+ while (cc->read_count >= CC_NUM_READ)
+ cc_usb_sync(cc);
+ read_buf = &cc->read_buf[cc->read_count++];
+ read_buf->buf = buf;
+ read_buf->len = len;
+}
+
+int
+cc_usb_recv_bytes(struct cc_usb *cc, uint8_t *buf, int len)
+{
+ cc_queue_read(cc, buf, len);
+ cc_usb_printf(cc, "G %x\n", len);
+ return len;
+}
+
+int
+cc_usb_write_memory(struct cc_usb *cc, uint16_t addr, uint8_t *bytes, int len)
+{
+ cc_usb_printf(cc, "O %x %x\n", len, addr);
+ while (len--)
+ cc_usb_printf(cc, "%02x", *bytes++);
+ return 0;
+}
+
+int
+cc_usb_read_memory(struct cc_usb *cc, uint16_t addr, uint8_t *bytes, int len)
+{
+ int i;
+ cc_queue_read(cc, bytes, len);
+ cc_usb_printf(cc, "I %x %x\n", len, addr);
+ cc_usb_sync(cc);
+ for (i = 0; i < len; i++) {
+ if ((i & 15) == 0) {
+ if (i)
+ ccdbg_debug(CC_DEBUG_MEMORY, "\n");
+ ccdbg_debug(CC_DEBUG_MEMORY, "\t%04x", addr + i);
+ }
+ ccdbg_debug(CC_DEBUG_MEMORY, " %02x", bytes[i]);
+ }
+ ccdbg_debug(CC_DEBUG_MEMORY, "\n");
+ return 0;
+}
+
+int
+cc_usb_debug_mode(struct cc_usb *cc)
+{
+ cc_usb_sync(cc);
+ cc_usb_printf(cc, "D\n");
+ return 1;
+}
+
+int
+cc_usb_reset(struct cc_usb *cc)
+{
+ cc_usb_sync(cc);
+ cc_usb_printf(cc, "R\n");
+ return 1;
+}
+
+static struct termios save_termios;
+
+struct cc_usb *
+cc_usb_open(void)
+{
+ struct cc_usb *cc;
+ char *tty;
+ struct termios termios;
+
+ tty = getenv("CCDBG_TTY");
+ if (!tty)
+ tty = DEFAULT_TTY;
+ cc = calloc (sizeof (struct cc_usb), 1);
+ if (!cc)
+ return NULL;
+ cc->fd = open(tty, O_RDWR | O_NONBLOCK);
+ if (cc->fd < 0) {
+ perror(tty);
+ free (cc);
+ return NULL;
+ }
+ tcgetattr(cc->fd, &termios);
+ save_termios = termios;
+ cfmakeraw(&termios);
+ tcsetattr(cc->fd, TCSAFLUSH, &termios);
+ cc_usb_printf(cc, "E 0\n");
+ cc_usb_sync(cc);
+ sleep(1);
+ cc_usb_sync(cc);
+ return cc;
+}
+
+void
+cc_usb_close(struct cc_usb *cc)
+{
+ tcsetattr(cc->fd, TCSAFLUSH, &save_termios);
+ close (cc->fd);
+ free (cc);
+}
+
--- /dev/null
+/*
+ * Copyright © 2009 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+#ifndef _CC_USB_H_
+#define _CC_USB_H_
+
+#include <stdint.h>
+
+struct cc_usb;
+
+struct cc_usb *
+cc_usb_open(void);
+
+void
+cc_usb_close(struct cc_usb *cc);
+
+int
+cc_usb_send_bytes(struct cc_usb *cc, uint8_t *bytes, int len);
+
+int
+cc_usb_recv_bytes(struct cc_usb *cc, uint8_t *bytes, int len);
+
+int
+cc_usb_write_memory(struct cc_usb *cc, uint16_t addr, uint8_t *bytes, int len);
+
+int
+cc_usb_read_memory(struct cc_usb *cc, uint16_t addr, uint8_t *bytes, int len);
+
+int
+cc_usb_debug_mode(struct cc_usb *cc);
+
+int
+cc_usb_reset(struct cc_usb *cc);
+
+void
+cc_usb_sync(struct cc_usb *cc);
+
+#endif /* _CC_USB_H_ */
#include "ccdbg.h"
-void
-ccdbg_debug_mode(struct ccdbg *dbg)
-{
- /* force two rising clocks while holding RESET_N low */
- ccdbg_debug(CC_DEBUG_COMMAND, "#\n");
- ccdbg_debug(CC_DEBUG_COMMAND, "# Debug mode\n");
- ccdbg_debug(CC_DEBUG_COMMAND, "#\n");
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_DATA );
- ccdbg_wait_reset(dbg);
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA );
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_DATA );
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA );
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_DATA|CC_RESET_N);
- ccdbg_wait_reset(dbg);
-}
-
-void
-ccdbg_reset(struct ccdbg *dbg)
-{
- ccdbg_debug(CC_DEBUG_COMMAND, "#\n");
- ccdbg_debug(CC_DEBUG_COMMAND, "# Reset\n");
- ccdbg_debug(CC_DEBUG_COMMAND, "#\n");
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA );
- ccdbg_wait_reset(dbg);
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA );
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA );
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA );
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_wait_reset(dbg);
-}
-
uint8_t
ccdbg_chip_erase(struct ccdbg *dbg)
{
return ccdbg_cmd_write_read8(dbg, CC_DEBUG_INSTR(nbytes), instr, nbytes);
}
+void
+ccdbg_debug_instr_discard(struct ccdbg *dbg, uint8_t *instr, int nbytes)
+{
+ static uint8_t discard;
+ ccdbg_cmd_write_queue8(dbg, CC_DEBUG_INSTR(nbytes),
+ instr, nbytes, &discard);
+}
+
+void
+ccdbg_debug_instr_queue(struct ccdbg *dbg, uint8_t *instr, int nbytes,
+ uint8_t *reply)
+{
+ return ccdbg_cmd_write_queue8(dbg, CC_DEBUG_INSTR(nbytes),
+ instr, nbytes, reply);
+}
+
uint8_t
ccdbg_step_instr(struct ccdbg *dbg)
{
ccdbg_debug(CC_DEBUG_INSTRUCTIONS, "\t%02x", inst[1]);
for (i = 0; i < len - 1; i++)
ccdbg_debug(CC_DEBUG_INSTRUCTIONS, " %02x", inst[i+2]);
- status = ccdbg_debug_instr(dbg, inst+1, len);
+ ccdbg_debug_instr_queue(dbg, inst+1, len, &status);
for (; i < 3; i++)
ccdbg_debug(CC_DEBUG_INSTRUCTIONS, " ");
ccdbg_debug(CC_DEBUG_INSTRUCTIONS, " -> %02x\n", status);
inst += len + 1;
}
+ ccdbg_sync(dbg);
return status;
}
ccdbg_level &= ~level;
}
+static int initialized;
+
void
ccdbg_debug(int level, char *format, ...)
{
va_list ap;
+ if (!initialized) {
+ char *level;
+ initialized = 1;
+ level = getenv("CCDEBUG");
+ if (level)
+ ccdbg_level |= strtoul(level, NULL, 0);
+ }
if (ccdbg_level & level) {
va_start(ap, format);
vprintf(format, ap);
#include "ccdbg.h"
#include <time.h>
-#ifdef CP_USB_ASYNC
-#include "cp-usb-async.h"
-#else
-#include "cp-usb.h"
-#endif
+#include "cc-usb.h"
+#include "cc-bitbang.h"
-static uint32_t cc_clock_us = CC_CLOCK_US;
-static uint32_t cc_reset_us = CC_RESET_US;
-void
-ccdbg_set_clock(uint32_t us)
-{
- cc_clock_us = us;
-}
-
-void
-ccdbg_half_clock(struct ccdbg *dbg)
-{
- struct timespec req, rem;
- req.tv_sec = (cc_clock_us / 2) / 1000000;
- req.tv_nsec = ((cc_clock_us / 2) % 1000000) * 1000;
- nanosleep(&req, &rem);
-}
-
-void
-ccdbg_wait_reset(struct ccdbg *dbg)
-{
- struct timespec req, rem;
-
- ccdbg_sync_io(dbg);
- req.tv_sec = (cc_reset_us) / 1000000;
- req.tv_nsec = ((cc_reset_us) % 1000000) * 1000;
- nanosleep(&req, &rem);
-}
-
struct ccdbg *
ccdbg_open(void)
{
perror("calloc");
return NULL;
}
-#ifdef CP_USB_ASYNC
- dbg->cp_async = cp_usb_async_open();
- if (!dbg->cp_async) {
- free (dbg);
- return NULL;
- }
-#else
- dbg->cp = cp_usb_open ();
- if (!dbg->cp) {
- free (dbg);
- return NULL;
+ dbg->usb = cc_usb_open();
+ if (!dbg->usb) {
+ dbg->bb = cc_bitbang_open();
+ if (!dbg->bb) {
+ free(dbg);
+ return NULL;
+ }
}
-#endif
return dbg;
}
void
ccdbg_close(struct ccdbg *dbg)
{
-#ifdef CP_USB_ASYNC
- cp_usb_async_close(dbg->cp_async);
-#else
- cp_usb_close(dbg->cp);
-#endif
+ if (dbg->usb)
+ cc_usb_close(dbg->usb);
+ if (dbg->bb)
+ cc_bitbang_close(dbg->bb);
free (dbg);
}
-int
-ccdbg_write(struct ccdbg *dbg, uint8_t mask, uint8_t value)
-{
-#ifdef CP_USB_ASYNC
- cp_usb_async_write(dbg->cp_async, mask, value);
-#else
- cp_usb_write(dbg->cp, mask, value);
-#endif
- return 0;
-}
-
-void
-ccdbg_read(struct ccdbg *dbg, uint8_t *valuep)
-{
-#ifdef CP_USB_ASYNC
- cp_usb_async_read(dbg->cp_async, valuep);
-#else
- *valuep = cp_usb_read(dbg->cp);
-#endif
-}
-
-void
-ccdbg_sync_io(struct ccdbg *dbg)
-{
-#ifdef CP_USB_ASYNC
- cp_usb_async_sync(dbg->cp_async);
-#endif
-}
-
-static char
-is_bit(uint8_t get, uint8_t mask, char on, uint8_t bit)
-{
- if (mask&bit) {
- if (get&bit)
- return on;
- else
- return '.';
- } else
- return '-';
-}
-void
-ccdbg_print(char *format, uint8_t mask, uint8_t set)
-{
- ccdbg_debug (CC_DEBUG_BITBANG, format,
- is_bit(set, mask, 'C', CC_CLOCK),
- is_bit(set, mask, 'D', CC_DATA),
- is_bit(set, mask, 'R', CC_RESET_N));
-}
-
void
-ccdbg_send(struct ccdbg *dbg, uint8_t mask, uint8_t set)
+ccdbg_debug_mode(struct ccdbg *dbg)
{
- ccdbg_write(dbg, mask, set);
- ccdbg_print("%c %c %c\n", mask, set);
- ccdbg_half_clock(dbg);
+ if (dbg->usb)
+ cc_usb_debug_mode(dbg->usb);
+ else if (dbg->bb)
+ cc_bitbang_debug_mode(dbg->bb);
}
void
-ccdbg_send_bit(struct ccdbg *dbg, uint8_t bit)
+ccdbg_reset(struct ccdbg *dbg)
{
- if (bit) bit = CC_DATA;
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|bit|CC_RESET_N);
- ccdbg_send(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, bit|CC_RESET_N);
-}
-
-void
-ccdbg_send_byte(struct ccdbg *dbg, uint8_t byte)
-{
- int bit;
- ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Send Byte 0x%02x\n#\n", byte);
- for (bit = 7; bit >= 0; bit--) {
- ccdbg_send_bit(dbg, (byte >> bit) & 1);
- if (bit == 3)
- ccdbg_debug(CC_DEBUG_BITBANG, "\n");
- }
- ccdbg_sync_io(dbg);
+ if (dbg->usb)
+ cc_usb_reset(dbg->usb);
+ else if (dbg->bb)
+ cc_bitbang_reset(dbg->bb);
}
void
ccdbg_send_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes)
{
- while (nbytes--)
- ccdbg_send_byte(dbg, *bytes++);
-}
-
-void
-ccdbg_recv_bit(struct ccdbg *dbg, int first, uint8_t *bit)
-{
- uint8_t mask = first ? CC_DATA : 0;
-
- ccdbg_send(dbg, CC_CLOCK|mask|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_read(dbg, bit);
- ccdbg_send(dbg, CC_CLOCK| CC_RESET_N, CC_RESET_N);
+ if (dbg->usb)
+ cc_usb_send_bytes(dbg->usb, bytes, nbytes);
+ else if (dbg->bb)
+ cc_bitbang_send_bytes(dbg->bb, bytes, nbytes);
}
void
-ccdbg_recv_byte(struct ccdbg *dbg, int first, uint8_t *bytep)
+ccdbg_recv_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes)
{
- uint8_t byte = 0;
- uint8_t bits[8];
- int bit;
-
- ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Recv byte\n#\n");
- for (bit = 0; bit < 8; bit++) {
- ccdbg_recv_bit(dbg, first, &bits[bit]);
- first = 0;
- }
- ccdbg_sync_io(dbg);
- for (bit = 0; bit < 8; bit++) {
- byte = byte << 1;
- byte |= (bits[bit] & CC_DATA) ? 1 : 0;
- ccdbg_print("#\t%c %c %c\n", CC_DATA, bits[bit]);
- if (bit == 3)
- ccdbg_debug(CC_DEBUG_BITBANG, "\n");
- }
- ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Recv 0x%02x\n#\n", byte);
- *bytep = byte;
+ if (dbg->usb)
+ cc_usb_recv_bytes(dbg->usb, bytes, nbytes);
+ else if (dbg->bb)
+ cc_bitbang_recv_bytes(dbg->bb, bytes, nbytes);
}
void
-ccdbg_recv_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes)
+ccdbg_sync(struct ccdbg *dbg)
{
- int i;
- int first = 1;
- for (i = 0; i < nbytes; i++) {
- ccdbg_recv_byte(dbg, first, &bytes[i]);
- first = 0;
- }
+ if (dbg->usb)
+ cc_usb_sync(dbg->usb);
+ else if (dbg->bb)
+ cc_bitbang_sync(dbg->bb);
}
void
ccdbg_cmd_write(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
{
- int i;
- ccdbg_send_byte(dbg, cmd);
- for (i = 0; i < len; i++)
- ccdbg_send_byte(dbg, data[i]);
+ ccdbg_send_bytes(dbg, &cmd, 1);
+ ccdbg_send_bytes(dbg, data, len);
}
uint8_t
uint8_t byte[1];
ccdbg_cmd_write(dbg, cmd, data, len);
ccdbg_recv_bytes(dbg, byte, 1);
+ ccdbg_sync(dbg);
return byte[0];
}
uint8_t byte[2];
ccdbg_cmd_write(dbg, cmd, data, len);
ccdbg_recv_bytes(dbg, byte, 2);
+ ccdbg_sync(dbg);
return (byte[0] << 8) | byte[1];
}
+
+void
+ccdbg_cmd_write_queue8(struct ccdbg *dbg, uint8_t cmd,
+ uint8_t *data, int len,
+ uint8_t *reply)
+{
+ ccdbg_cmd_write(dbg, cmd, data, len);
+ ccdbg_recv_bytes(dbg, reply, 1);
+}
*/
#include "ccdbg.h"
+#include "cc-bitbang.h"
/*
* Manual bit-banging to debug the low level protocol
char line[80];
uint8_t set, mask;
+ if (dbg->bb == NULL) {
+ fprintf(stderr, "Must use bitbang API for manual mode\n");
+ return;
+ }
while (fgets(line, sizeof line, input)) {
if (line[0] == '#' || line[0] == '\n') {
printf ("%s", line);
get_bit(line, 4, 'R', CC_RESET_N, &set, &mask);
if (mask != (CC_CLOCK|CC_DATA|CC_RESET_N)) {
uint8_t read;
- ccdbg_read(dbg, &read);
- ccdbg_sync_io(dbg);
- ccdbg_print("\t%c %c %c", CC_CLOCK|CC_DATA|CC_RESET_N, read);
+ cc_bitbang_read(dbg->bb, &read);
+ cc_bitbang_sync(dbg->bb);
+ cc_bitbang_print("\t%c %c %c", CC_CLOCK|CC_DATA|CC_RESET_N, read);
if ((set & CC_CLOCK) == 0)
printf ("\t%d", (read&CC_DATA) ? 1 : 0);
printf ("\n");
}
- ccdbg_send(dbg, mask, set);
- ccdbg_sync_io(dbg);
+ cc_bitbang_send(dbg->bb, mask, set);
+ cc_bitbang_sync(dbg->bb);
}
}
int i, nl = 0;
struct ccstate state;
+ if (dbg->usb)
+ return cc_usb_write_memory(dbg->usb, addr, bytes, nbytes);
ccdbg_state_save(dbg, &state, CC_STATE_ACC | CC_STATE_PSW | CC_STATE_DP);
memory_init[HIGH_START] = addr >> 8;
memory_init[LOW_START] = addr;
ccdbg_rom_replace_xmem(dbg, addr, bytes, nbytes);
return 0;
}
+ if (dbg->usb)
+ return cc_usb_read_memory(dbg->usb, addr, bytes, nbytes);
ccdbg_state_save(dbg, &state, CC_STATE_ACC | CC_STATE_PSW | CC_STATE_DP);
memory_init[HIGH_START] = addr >> 8;
memory_init[LOW_START] = addr;
#include <sys/ioctl.h>
#include <sys/stat.h>
#include "ccdbg-debug.h"
-
-#define CC_CLOCK 0x1
-#define CC_DATA 0x2
-#define CC_RESET_N 0x4
-#define CC_CLOCK_US (2)
-
-/* Telemetrum has a 10k pull-up to 3.3v, a 0.001uF cap to ground
- * and a 2.7k resistor to the reset line. This takes about 6us
- * to settle, so we'll wait longer than that after changing the reset line
- */
-#define CC_RESET_US (12)
+#include "cc-bitbang.h"
+#include "cc-usb.h"
/* 8051 instructions
*/
/* Bit-addressable status word */
#define PSW(bit) (0xD0 | (bit))
-#define CP_USB_ASYNC
-
struct ccdbg {
-#ifdef CP_USB_ASYNC
- struct cp_usb_async *cp_async;
-#else
- struct cp_usb *cp;
-#endif
- struct hex_image *rom;
+ struct cc_bitbang *bb;
+ struct cc_usb *usb;
+ struct hex_image *rom;
};
/* Intel hex file format data
uint8_t
ccdbg_debug_instr(struct ccdbg *dbg, uint8_t *instr, int nbytes);
+void
+ccdbg_debug_instr_discard(struct ccdbg *dbg, uint8_t *instr, int nbytes);
+
+void
+ccdbg_debug_instr_queue(struct ccdbg *dbg, uint8_t *instr, int nbytes,
+ uint8_t *reply);
+
uint8_t
ccdbg_step_instr(struct ccdbg *dbg);
ccdbg_hex_image_equal(struct hex_image *a, struct hex_image *b);
/* ccdbg-io.c */
-void
-ccdbg_set_clock(uint32_t us);
-
-void
-ccdbg_half_clock(struct ccdbg *dbg);
-
-void
-ccdbg_wait_reset(struct ccdbg *dbg);
-
-int
-ccdbg_write(struct ccdbg *dbg, uint8_t mask, uint8_t value);
-
-void
-ccdbg_read(struct ccdbg *dbg, uint8_t *valuep);
-
struct ccdbg *
ccdbg_open(void);
void
ccdbg_close(struct ccdbg *dbg);
-void
-ccdbg_clock_1_0(struct ccdbg *dbg);
-
-void
-ccdbg_clock_0_1(struct ccdbg *dbg);
-
-void
-ccdbg_write_bit(struct ccdbg *dbg, uint8_t bit);
-
-void
-ccdbg_write_byte(struct ccdbg *dbg, uint8_t byte);
-
-uint8_t
-ccdbg_read_bit(struct ccdbg *dbg);
-
-uint8_t
-ccdbg_read_byte(struct ccdbg *dbg);
-
void
ccdbg_cmd_write(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len);
uint8_t
ccdbg_cmd_write_read8(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len);
-uint16_t
-ccdbg_cmd_write_read16(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len);
-
void
-ccdbg_send(struct ccdbg *dbg, uint8_t mask, uint8_t set);
+ccdbg_cmd_write_queue8(struct ccdbg *dbg, uint8_t cmd,
+ uint8_t *data, int len, uint8_t *reply);
-void
-ccdbg_send_bit(struct ccdbg *dbg, uint8_t bit);
-
-void
-ccdbg_send_byte(struct ccdbg *dbg, uint8_t byte);
+uint16_t
+ccdbg_cmd_write_read16(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len);
void
ccdbg_send_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes);
-void
-ccdbg_recv_bit(struct ccdbg *dbg, int first, uint8_t *bit);
-
-void
-ccdbg_recv_byte(struct ccdbg *dbg, int first, uint8_t *byte);
-
void
ccdbg_recv_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes);
void
-ccdbg_sync_io(struct ccdbg *dbg);
-
-void
-ccdbg_print(char *format, uint8_t mask, uint8_t set);
+ccdbg_sync(struct ccdbg *dbg);
/* ccdbg-manual.c */
#include "cp-usb.h"
#include <stdio.h>
#include <errno.h>
+#include <libusb.h>
struct cp_usb {
usb_dev_handle *usb_dev;
projects / fw / altos / commitdiff