X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=ccdbg.c;h=3fcf7053138df240ea04f97e735976cde72a92e4;hp=6462739a56b08747d55fe74aa6a5337c1c8a05a6;hb=5df84df7cd6a31527dcfd11030f00ef9d8abf170;hpb=584e28bac8af38de433767e017977ed1adddeb36 diff --git a/ccdbg.c b/ccdbg.c index 6462739a..3fcf7053 100644 --- a/ccdbg.c +++ b/ccdbg.c @@ -18,227 +18,6 @@ #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) { @@ -249,18 +28,16 @@ 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);