diff options
Diffstat (limited to 'src/jtag/core.c')
-rw-r--r-- | src/jtag/core.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/jtag/core.c b/src/jtag/core.c index 4f517c09..7f417b73 100644 --- a/src/jtag/core.c +++ b/src/jtag/core.c @@ -488,6 +488,35 @@ void jtag_add_tlr(void) jtag_notify_event(JTAG_TRST_ASSERTED); } +/** + * If supported by the underlying adapter, this clocks a raw bit sequence + * onto TMS for switching betwen JTAG and SWD modes. + * + * DO NOT use this to bypass the integrity checks and logging provided + * by the jtag_add_pathmove() and jtag_add_statemove() calls. + * + * @param nbits How many bits to clock out. + * @param seq The bit sequence. The LSB is bit 0 of seq[0]. + * @param state The JTAG tap state to record on completion. Use + * TAP_INVALID to represent being in in SWD mode. + * + * @todo Update naming conventions to stop assuming everything is JTAG. + */ +int jtag_add_tms_seq(unsigned nbits, const uint8_t *seq, enum tap_state state) +{ + int retval; + + if (!(jtag->supported & DEBUG_CAP_TMS_SEQ)) + return ERROR_JTAG_NOT_IMPLEMENTED; + + jtag_checks(); + cmd_queue_cur_state = state; + + retval = interface_add_tms_seq(nbits, seq); + jtag_set_error(retval); + return retval; +} + void jtag_add_pathmove(int num_states, const tap_state_t *path) { tap_state_t cur_state = cmd_queue_cur_state; |