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Merge pull request #4987 from DavePutz/issue_4983

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Fix for Issue #4983 - stop state machine before restarting
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Scott Shawcroft 2021-07-13 12:16:33 -07:00 committed by GitHub
commit c2685970af
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1 changed files with 4 additions and 1 deletions
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5
ports/raspberrypi/common-hal/rp2pio/StateMachine.c
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@ -497,8 +497,11 @@ void common_hal_rp2pio_statemachine_construct(rp2pio_statemachine_obj_t *self,
}
void common_hal_rp2pio_statemachine_restart(rp2pio_statemachine_obj_t *self) {
common_hal_rp2pio_statemachine_stop(self);
// Reset program counter to the original offset. A JMP is 0x0000 plus
// the desired offset, so we can just use self->offset.
pio_sm_exec(self->pio, self->state_machine,self->offset);
pio_sm_restart(self->pio, self->state_machine);
uint8_t pio_index = pio_get_index(self->pio);
uint32_t pins_we_use = _current_sm_pins[pio_index][self->state_machine];
pio_sm_set_pins_with_mask(self->pio, self->state_machine, self->initial_pin_state, pins_we_use);