from esp32.c:418
static const struct command_registration esp32_any_command_handlers[] = {
{
.name = "flashbootstrap",
.handler = esp32_cmd_flashbootstrap,
.mode = COMMAND_ANY,
.help =
"Set the idle state of the TMS pin, which at reset also is the voltage selector for the flash chip.",
.usage = "none|1.8|3.3|high|low",
},
COMMAND_REGISTRATION_DONE
};