diff options
Diffstat (limited to 'src/jtag/commands.h')
| -rw-r--r-- | src/jtag/commands.h | 39 |
1 files changed, 30 insertions, 9 deletions
diff --git a/src/jtag/commands.h b/src/jtag/commands.h index b10b5453..692eee43 100644 --- a/src/jtag/commands.h +++ b/src/jtag/commands.h @@ -99,18 +99,38 @@ struct sleep_command { }; /** + * Encapsulates a series of bits to be clocked out, affecting state + * and mode of the interface. + * + * In JTAG mode these are clocked out on TMS, using TCK. They may be + * used for link resets, transitioning between JTAG and SWD modes, or + * to implement JTAG state machine transitions (implementing pathmove + * or statemove operations). + * + * In SWD mode these are clocked out on SWDIO, using SWCLK, and are + * used for link resets and transitioning between SWD and JTAG modes. + */ +struct tms_command { + /** How many bits should be clocked out. */ + unsigned num_bits; + /** The bits to clock out; the LSB is bit 0 of bits[0]. */ + const uint8_t *bits; +}; + +/** * Defines a container type that hold a pointer to a JTAG command * structure of any defined type. */ union jtag_command_container { - struct scan_command* scan; - struct statemove_command* statemove; - struct pathmove_command* pathmove; - struct runtest_command* runtest; - struct stableclocks_command* stableclocks; - struct reset_command* reset; - struct end_state_command* end_state; - struct sleep_command* sleep; + struct scan_command *scan; + struct statemove_command *statemove; + struct pathmove_command *pathmove; + struct runtest_command *runtest; + struct stableclocks_command *stableclocks; + struct reset_command *reset; + struct end_state_command *end_state; + struct sleep_command *sleep; + struct tms_command *tms; }; /** @@ -124,7 +144,8 @@ enum jtag_command_type { JTAG_RESET = 4, JTAG_PATHMOVE = 6, JTAG_SLEEP = 7, - JTAG_STABLECLOCKS = 8 + JTAG_STABLECLOCKS = 8, + JTAG_TMS = 9, }; struct jtag_command { |