diff options
Diffstat (limited to 'ccdbg.c')
| -rw-r--r-- | ccdbg.c | 86 |
1 files changed, 85 insertions, 1 deletions
@@ -18,18 +18,102 @@ #include "ccdbg.h" +static uint8_t +get_bit(char *line, int i, char on, uint8_t bit) +{ + if (line[i] == on) + return bit; + if (line[i] == '.') + return 0; + fprintf(stderr, "bad line %s\n", line); + exit (1); +} + +static char +is_bit(uint8_t get, char on, uint8_t bit) +{ + if (get&bit) + return on; + else + return '.'; +} + +static uint8_t +ccdbg_write_read(struct ccdbg *dbg, uint8_t set) +{ + uint8_t get; + + cccp_write(dbg, CC_DATA|CC_CLOCK|CC_RESET_N, set); + get = cccp_read_all(dbg); + printf("%c %c %c -> %c %c %c\n", + is_bit(set, 'C', CC_CLOCK), + is_bit(set, 'D', CC_DATA), + is_bit(set, 'R', CC_RESET_N), + is_bit(get, 'C', CC_CLOCK), + is_bit(get, 'D', CC_DATA), + is_bit(get, 'R', CC_RESET_N)); + ccdbg_half_clock(dbg); + return get; +} + +static void +_ccdbg_debug_mode(struct ccdbg *dbg) +{ + ccdbg_write_read(dbg, CC_CLOCK|CC_DATA|CC_RESET_N); + ccdbg_write_read(dbg, CC_DATA ); + ccdbg_write_read(dbg, CC_CLOCK|CC_DATA ); + ccdbg_write_read(dbg, CC_DATA ); + ccdbg_write_read(dbg, CC_CLOCK|CC_DATA ); + ccdbg_write_read(dbg, CC_DATA|CC_RESET_N); +} + +static void +_ccdbg_reset(struct ccdbg *dbg) +{ + ccdbg_write_read(dbg, CC_CLOCK|CC_DATA|CC_RESET_N); + ccdbg_write_read(dbg, CC_CLOCK|CC_DATA ); + ccdbg_write_read(dbg, CC_CLOCK|CC_DATA ); + ccdbg_write_read(dbg, CC_CLOCK|CC_DATA|CC_RESET_N); +} + +static void +ccdbg_manual(struct ccdbg *dbg, FILE *input) +{ + char line[80]; + uint8_t set; + + while (fgets(line, sizeof line, input)) { + if (line[0] == '#' || line[0] == '\n') { + printf ("%s", line); + continue; + } + set = 0; + set |= get_bit(line, 0, 'C', CC_CLOCK); + set |= get_bit(line, 2, 'D', CC_DATA); + set |= get_bit(line, 4, 'R', CC_RESET_N); + ccdbg_write_read(dbg, set); + } +} + int main (int argc, char **argv) { struct ccdbg *dbg; uint8_t status; + uint16_t chip_id; dbg = ccdbg_open("/dev/ttyUSB0"); if (!dbg) exit (1); - ccdbg_reset(dbg); + ccdbg_manual(dbg, stdin); +#if 0 + 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); +#endif + _ccdbg_reset(dbg); ccdbg_close(dbg); exit (0); } |