jtagtap_tms_seq(uint32_t MS, int ticks)
{
while(ticks--) {
jtagtap_next(MS & 1, 1);
MS >>= 1;
}
}
int jtagtap_init(void)
{
TMS_SET_MODE();
/* Go to JTAG mode for SWJ-DP */
for(int i = 0; i <= 50; i++) jtagtap_next(1, 0); /* Reset SW-DP */
jtagtap_tms_seq(0xE73C, 16); /* SWD to JTAG sequence */
jtagtap_soft_reset();
return 0;
}
int
jtagtap_init(void)
{
TMS_SET_MODE();
for(int i = 0; i <= 50; i++) jtagtap_next(1,0);
jtagtap_tms_seq(0xE73C, 16);
jtagtap_soft_reset();
return 0;
}
jtagtap_tdi_seq(const uint8_t final_tms, const uint8_t *DI, int ticks)
{
uint8_t index = 1;
while(ticks--) {
jtagtap_next(ticks?0:final_tms, *DI & index);
if(!(index <<= 1)) {
index = 1;
DI++;
}
}
}
int jtagtap_init(void)
{
gpio_set_mode(TMS_PORT, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, TMS_PIN);
/* Go to JTAG mode for SWJ-DP */
for(int i = 0; i <= 50; i++) jtagtap_next(1, 0); /* Reset SW-DP */
jtagtap_tms_seq(0xE73C, 16); /* SWD to JTAG sequence */
jtagtap_soft_reset();
return 0;
}
jtagtap_tdi_tdo_seq(uint8_t *DO, const uint8_t final_tms, const uint8_t *DI, int ticks)
{
uint8_t index = 1;
while(ticks--) {
if(jtagtap_next(ticks?0:final_tms, *DI & index)) {
*DO |= index;
} else {
*DO &= ~index;
}
if(!(index <<= 1)) {
index = 1;
DI++; DO++;
}
}
}
int jtagtap_init(void)
{
int err;
assert(ftdic != NULL);
if((err = ftdi_set_bitmode(ftdic, 0, BITMODE_RESET)) ||
(err = ftdi_set_bitmode(ftdic, 0, BITMODE_MPSSE))) {
fprintf(stderr, "ftdi_set_bitmode: %d: %s\n",
err, ftdi_get_error_string(ftdic));
abort();
}
assert(ftdi_write_data(ftdic, "\x8B\x86\x06\x00\x80\xA8\xAB\x85", 8) == 8);
/* Go to JTAG mode for SWJ-DP */
for(int i = 0; i <= 50; i++) jtagtap_next(1, 0); /* Reset SW-DP */
jtagtap_tms_seq(0xE73C, 16); /* SWD to JTAG sequence */
jtagtap_soft_reset();
return 0;
}
