KERNEL_OBJS=cccp.o
LIBUSB_OBJS=cp-usb.o
-OBJS=ccdbg.o ccdbg-command.o ccdbg-io.o $(LIBUSB_OBJS)
+OBJS=ccdbg.o ccdbg-command.o ccdbg-debug.o ccdbg-io.o $(LIBUSB_OBJS)
INCS=ccdbg.h cccp.h
PROG=ccdbg
ccdbg_debug_mode(struct ccdbg *dbg)
{
/* force two rising clocks while holding RESET_N low */
- ccdbg_half_clock(dbg);
- ccdbg_write(dbg, CC_RESET_N|CC_CLOCK, 0); ccdbg_half_clock(dbg);
- ccdbg_write(dbg, CC_CLOCK, CC_CLOCK); ccdbg_half_clock(dbg);
- ccdbg_write(dbg, CC_CLOCK, 0); ccdbg_half_clock(dbg);
- ccdbg_write(dbg, CC_CLOCK, CC_CLOCK); ccdbg_half_clock(dbg);
- ccdbg_write(dbg, CC_RESET_N, CC_RESET_N); ccdbg_half_clock(dbg);
+ 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_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);
}
void
ccdbg_reset(struct ccdbg *dbg)
{
- ccdbg_half_clock(dbg);
- ccdbg_write(dbg, CC_RESET_N, 0); ccdbg_half_clock(dbg);
- ccdbg_write(dbg, CC_RESET_N, CC_RESET_N);
+ 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_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);
}
uint8_t
--- /dev/null
+/*
+ * Copyright © 2008 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 "ccdbg.h"
+#include <stdarg.h>
+
+int
+ccdbg_level = 0;
+
+void
+ccdbg_add_debug(int level)
+{
+ ccdbg_level |= level;
+}
+
+void
+ccdbg_clear_debug(int level)
+{
+ ccdbg_level &= ~level;
+}
+
+void
+ccdbg_debug(int level, char *format, ...)
+{
+ va_list ap;
+
+ if (ccdbg_level & level) {
+ va_start(ap, format);
+ vprintf(format, ap);
+ va_end(ap);
+ }
+}
return cp_usb_read(dbg);
#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_clock_1_0(struct ccdbg *dbg)
+ccdbg_print(char *format, uint8_t mask, uint8_t set)
{
- ccdbg_quarter_clock(dbg);
- assert(dbg->clock == 1);
- ccdbg_write(dbg, CC_CLOCK, 0);
- dbg->clock = 0;
- ccdbg_quarter_clock(dbg);
+ 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_clock_0_1(struct ccdbg *dbg)
+ccdbg_send(struct ccdbg *dbg, uint8_t mask, uint8_t set)
{
- ccdbg_quarter_clock(dbg);
- assert(dbg->clock == 0);
- ccdbg_write(dbg, CC_CLOCK, CC_CLOCK);
- dbg->clock = 1;
- ccdbg_quarter_clock(dbg);
+ ccdbg_write(dbg, mask, set);
+ ccdbg_print("%c %c %c\n", mask, set);
+ ccdbg_half_clock(dbg);
}
-/*
- * By convention, every macro function is entered with dbg->clock == 1
- */
-
void
-ccdbg_write_bit(struct ccdbg *dbg, uint8_t bit)
+ccdbg_send_bit(struct ccdbg *dbg, uint8_t bit)
{
- uint8_t data;
-
- assert(dbg->clock == 1);
- data = CC_CLOCK;
- if (bit)
- data |= CC_DATA;
- ccdbg_half_clock(dbg);
- ccdbg_write(dbg, CC_DATA|CC_CLOCK, data);
- ccdbg_half_clock(dbg);
- ccdbg_write(dbg, CC_CLOCK, 0);
-// printf ("%d", bit);
+ 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_write_byte(struct ccdbg *dbg, uint8_t byte)
+ccdbg_send_byte(struct ccdbg *dbg, uint8_t byte)
{
- int bit;
+ 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");
+ }
+}
- for (bit = 7; bit >= 0; bit--)
- ccdbg_write_bit(dbg, (byte >> bit) & 1);
+void
+ccdbg_send_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes)
+{
+ while (nbytes--)
+ ccdbg_send_byte(dbg, *bytes++);
}
uint8_t
-ccdbg_read_bit(struct ccdbg *dbg)
+ccdbg_recv_bit(struct ccdbg *dbg, int first)
{
- uint8_t data;
+ uint8_t mask = first ? CC_DATA : 0;
+ uint8_t read;
- ccdbg_half_clock(dbg);
- ccdbg_write(dbg, CC_CLOCK, CC_CLOCK);
- ccdbg_half_clock(dbg);
- ccdbg_write(dbg, CC_CLOCK, 0);
- data = ccdbg_read(dbg);
- return (data & CC_DATA) ? 1 : 0;
+ ccdbg_send(dbg, CC_CLOCK|mask|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
+ read = ccdbg_read(dbg);
+ ccdbg_send(dbg, CC_CLOCK| CC_RESET_N, CC_RESET_N);
+ return (read & CC_DATA) ? 1 : 0;
}
uint8_t
-ccdbg_read_byte(struct ccdbg *dbg)
+ccdbg_recv_byte(struct ccdbg *dbg, int first)
{
+ uint8_t byte = 0;
int bit;
- uint8_t byte = 0;
- for (bit = 7; bit >= 0; bit--)
- byte |= ccdbg_read_bit(dbg) << bit;
+ ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Recv byte\n#\n");
+ for (bit = 0; bit < 8; bit++) {
+ byte = byte << 1;
+ byte |= ccdbg_recv_bit(dbg, first);
+ if (bit == 3)
+ ccdbg_debug(CC_DEBUG_BITBANG, "\n");
+ first = 0;
+ }
+ ccdbg_debug(CC_DEBUG_BITBANG, "#\n# Recv 0x%02x\n#\n", byte);
return byte;
}
+void
+ccdbg_recv_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes)
+{
+ int first = 1;
+ while (nbytes--) {
+ *bytes++ = ccdbg_recv_byte(dbg, first);
+ first = 0;
+ }
+}
+
void
ccdbg_cmd_write(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
{
int i;
- ccdbg_write_byte(dbg, cmd);
+ ccdbg_send_byte(dbg, cmd);
for (i = 0; i < len; i++)
- ccdbg_write_byte(dbg, data[i]);
+ ccdbg_send_byte(dbg, data[i]);
}
uint8_t
ccdbg_cmd_write_read8(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
{
- uint8_t ret;
+ uint8_t byte[1];
ccdbg_cmd_write(dbg, cmd, data, len);
- ret = ccdbg_read_byte(dbg);
- return ret;
+ ccdbg_recv_bytes(dbg, byte, 1);
+ return byte[0];
}
uint16_t
ccdbg_cmd_write_read16(struct ccdbg *dbg, uint8_t cmd, uint8_t *data, int len)
{
- uint8_t byte1, byte0;
- int i;
+ uint8_t byte[2];
ccdbg_cmd_write(dbg, cmd, data, len);
- byte1 = ccdbg_read_byte(dbg);
- byte0 = ccdbg_read_byte(dbg);
- for (i = 0; i < 4; i++)
- (void) ccdbg_read_byte(dbg);
- return (byte1 << 8) | byte0;
+ ccdbg_recv_bytes(dbg, byte, 2);
+ return (byte[0] << 8) | byte[1];
}
-
#include "ccdbg.h"
-static void
-get_bit(char *line, int i, char on, uint8_t bit, uint8_t *bits, uint8_t *masks)
-{
- if (line[i] == on) {
- *bits |= bit;
- *masks |= bit;
- return;
- }
- if (line[i] == '.') {
- *masks |= bit;
- return;
- }
- if (line[i] == '-') {
- return;
- }
- fprintf(stderr, "bad line %s\n", line);
- exit (1);
-}
-
-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 '-';
-}
-
-static uint8_t
-ccdbg_write_read(struct ccdbg *dbg, uint8_t set, uint8_t mask)
-{
- uint8_t get = set;
-
- if (mask != (CC_DATA|CC_CLOCK|CC_RESET_N))
- get = ccdbg_read(dbg);
- ccdbg_write(dbg, mask, set);
- printf ("%c %c %c",
- is_bit(set, mask, 'C', CC_CLOCK),
- is_bit(set, mask, 'D', CC_DATA),
- is_bit(set, mask, 'R', CC_RESET_N));
- if (mask != (CC_DATA|CC_CLOCK|CC_RESET_N))
- printf(" -> %c %c %c",
- is_bit(get, 0xf, 'C', CC_CLOCK),
- is_bit(get, 0xf, 'D', CC_DATA),
- is_bit(get, 0xf, 'R', CC_RESET_N));
- printf("\n");
- ccdbg_half_clock(dbg);
- return get;
-}
-
-static void
-_ccdbg_debug_mode(struct ccdbg *dbg)
-{
- printf ("#\n");
- printf ("# Debug mode\n");
- printf ("#\n");
- ccdbg_write_read(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_write_read(dbg, CC_DATA , CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_write_read(dbg, CC_CLOCK|CC_DATA , CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_write_read(dbg, CC_DATA , CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_write_read(dbg, CC_CLOCK|CC_DATA , CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_write_read(dbg, CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
-}
-
-static void
-_ccdbg_reset(struct ccdbg *dbg)
-{
- ccdbg_write_read(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_write_read(dbg, CC_CLOCK|CC_DATA , CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_write_read(dbg, CC_CLOCK|CC_DATA , CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_write_read(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
-}
-
-static void
-_ccdbg_send_bit(struct ccdbg *dbg, uint8_t bit)
-{
- if (bit) bit = CC_DATA;
- ccdbg_write_read(dbg, CC_CLOCK|bit|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
- ccdbg_write_read(dbg, bit|CC_RESET_N, CC_CLOCK|CC_DATA|CC_RESET_N);
-}
-
-static void
-_ccdbg_send_byte(struct ccdbg *dbg, uint8_t byte)
-{
- int bit;
- printf ("#\n");
- printf ("# Send Byte 0x%02x\n", byte);
- printf ("#\n");
- for (bit = 7; bit >= 0; bit--) {
- _ccdbg_send_bit(dbg, (byte >> bit) & 1);
- if (bit == 3)
- printf ("\n");
- }
-}
-
-static void
-_ccdbg_send_bits(struct ccdbg *dbg, int n, uint32_t bits)
-{
- int bit;
- printf ("#\n");
- printf ("# Send %d bits 0x%08x\n", n, bits);
- printf ("#\n");
- for (bit = n - 1; bit >= 0; bit--) {
- _ccdbg_send_bit(dbg, (bits >> bit) & 1);
- if ((bit & 3) == 3)
- printf ("\n");
- }
-}
-
-static void
-_ccdbg_print_bits(int n, uint32_t bits)
-{
- int bit;
-
- for (bit = n - 1; bit >= 0; bit--)
- printf ("%d", (bits >> bit) & 1);
-}
-
-static uint32_t
-_ccdbg_read_bits(struct ccdbg *dbg, int bits)
-{
- int bit;
- uint32_t val = 0;
- uint8_t get;
-
- printf ("#\n");
- printf ("# Read %d bits\n", bits);
- printf ("#\n");
- for (bit = 0; bit < bits; bit++) {
- ccdbg_write_read(dbg, CC_CLOCK|CC_DATA|CC_RESET_N, CC_CLOCK|CC_RESET_N);
- get = ccdbg_write_read(dbg, CC_DATA|CC_RESET_N, CC_CLOCK|CC_RESET_N);
- val <<= 1;
- if (get & CC_DATA)
- val |= 1;
- if ((bit & 3) == 3)
- printf ("\n");
- }
- printf ("#\n");
- printf ("# Read "); _ccdbg_print_bits(bits, val); printf ("\n");
- printf ("#\n");
- return val;
-}
-
-static int
-_ccdbg_check_bits(uint32_t bits, uint8_t match)
-{
- int bit;
-
- for (bit = 0; bit < 24; bit++)
- if (((bits >> bit) & 0xff) == match)
- return 1;
- return 0;
-}
-
-static uint32_t
-_ccdbg_play(struct ccdbg *dbg, int num_sync, uint32_t sync)
-{
- uint32_t bits;
- _ccdbg_debug_mode(dbg);
- _ccdbg_send_bits(dbg, num_sync, sync);
- _ccdbg_send_byte(dbg, CC_GET_CHIP_ID);
- bits = _ccdbg_read_bits(dbg, 16);
- _ccdbg_send_byte(dbg, CC_GET_CHIP_ID);
- bits = _ccdbg_read_bits(dbg, 16);
-// _ccdbg_send_byte(dbg, CC_READ_STATUS);
- _ccdbg_reset(dbg);
- if (_ccdbg_check_bits(bits, 0x11)) {
- printf("#\n#match with %d bits 0x%08x\n#\n", num_sync, sync);
- return 1;
- }
- return 0;
-}
-
-static int
-_ccdbg_play_num(struct ccdbg *dbg, int num)
-{
- uint32_t sync;
- uint32_t max;
-
- printf ("#\n#play %d\n#\n", num);
- max = (1 << num);
- for (sync = 0; sync < max; sync++)
- if (_ccdbg_play(dbg, num, sync))
- return 1;
- return 0;
-}
-
-static int
-_ccdbg_play_many(struct ccdbg *dbg, int max)
-{
- int num;
-
- for (num = 0; num < max; num++)
- if (_ccdbg_play_num(dbg, num))
- return 1;
- return 0;
-}
-
-static void
-ccdbg_manual(struct ccdbg *dbg, FILE *input)
-{
- char line[80];
- uint8_t set, mask;
-
- while (fgets(line, sizeof line, input)) {
- if (line[0] == '#' || line[0] == '\n') {
- printf ("%s", line);
- continue;
- }
- set = 0;
- mask = 0;
- get_bit(line, 0, 'C', CC_CLOCK, &set, &mask);
- get_bit(line, 2, 'D', CC_DATA, &set, &mask);
- get_bit(line, 4, 'R', CC_RESET_N, &set, &mask);
- ccdbg_write_read(dbg, set, mask);
- }
-}
-
int
main (int argc, char **argv)
{
dbg = ccdbg_open("/dev/ttyUSB0");
if (!dbg)
exit (1);
-#if 0
- _ccdbg_play(dbg, 0, 0);
- _ccdbg_play_many(dbg, 8);
-#endif
- ccdbg_manual(dbg, stdin);
#if 0
+ ccdbg_manual(dbg, stdin);
+#endif
+#if 1
ccdbg_debug_mode(dbg);
status = ccdbg_read_status(dbg);
printf("Status: 0x%02x\n", status);
chip_id = ccdbg_get_chip_id(dbg);
printf("Chip id: 0x%04x\n", chip_id);
- _ccdbg_reset(dbg);
+ ccdbg_reset(dbg);
#endif
ccdbg_close(dbg);
exit (0);
/* painfully slow for now */
-#define CC_CLOCK_US (100)
+#define CC_CLOCK_US (1000)
struct ccdbg {
usb_dev_handle *usb_dev;
#define CC_STEP_REPLACE (0x64|(n))
#define CC_GET_CHIP_ID 0x68
+#define CC_DEBUG_BITBANG 0x00000001
+#define CC_DEBUG_COMMAND 0x00000002
+
/* ccdbg-command.c */
void
ccdbg_debug_mode(struct ccdbg *dbg);
uint16_t
ccdbg_get_chip_id(struct ccdbg *dbg);
+/* ccdbg-debug.c */
+void
+ccdbg_debug(int level, char *format, ...);
+
+void
+ccdbg_add_debug(int level);
+
+void
+ccdbg_clear_debug(int level);
+
/* ccdbg-io.c */
void
ccdbg_quarter_clock(struct ccdbg *dbg);
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);
+
+void
+ccdbg_send_bit(struct ccdbg *dbg, uint8_t bit);
+
+void
+ccdbg_send_byte(struct ccdbg *dbg, uint8_t byte);
+
+void
+ccdbg_send_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes);
+
+uint8_t
+ccdbg_recv_bit(struct ccdbg *dbg, int first);
+
+uint8_t
+ccdbg_recv_byte(struct ccdbg *dbg, int first);
+
+void
+ccdbg_recv_bytes(struct ccdbg *dbg, uint8_t *bytes, int nbytes);
+
+void
+ccdbg_print(char *format, uint8_t mask, uint8_t set);
+
+/* ccdbg-manual.c */
+
+void
+ccdbg_manual(struct ccdbg *dbg, FILE *input);
+
/* cp-usb.c */
void
cp_usb_init(struct ccdbg *dbg);
#
C D R
-. D R
-C D R
-. D R
-C D R
-. D R
-C D R
-. D R
+. - R
+C - R
+. - R
+C - R
+. - R
+C - R
+. - R
+
+C - R
+. - R
+C - R
+. - R
+C - R
+. - R
+C - R
+. - R
C D R
-. D R
-C D R
-. D R
-C D R
-. D R
-C D R
-. D R