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Merge pull request #4662 from gamblor21/rp2040_pulsein_fix_4657

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Added statemachine deinit
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Mark 2021-04-25 13:43:06 -05:00 committed by GitHub
commit 927d5a0455
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 14 deletions
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23
ports/raspberrypi/common-hal/pulseio/PulseIn.c
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@ -62,10 +62,7 @@ void common_hal_pulseio_pulsein_construct(pulseio_pulsein_obj_t *self,
self->len = 0;
save_self = self;
// Set everything up.
rp2pio_statemachine_obj_t state_machine;
bool ok = rp2pio_statemachine_construct(&state_machine,
bool ok = rp2pio_statemachine_construct(&self->state_machine,
pulsein_program, sizeof(pulsein_program) / sizeof(pulsein_program[0]),
1000000,
NULL, 0,
@ -80,29 +77,26 @@ void common_hal_pulseio_pulsein_construct(pulseio_pulsein_obj_t *self,
false,
true, 32, true, // RX auto-push every 32 bits
false); // claim pins
pio_sm_set_enabled(state_machine.pio,state_machine.state_machine, false);
self->state_machine.pio = state_machine.pio;
self->state_machine.state_machine = state_machine.state_machine;
self->state_machine.sm_config = state_machine.sm_config;
self->state_machine.offset = state_machine.offset;
pio_sm_set_enabled(self->state_machine.pio,self->state_machine.state_machine, false);
pio_sm_clear_fifos(self->state_machine.pio,self->state_machine.state_machine);
last_level = self->idle_state;
level_count = 0;
result = 0;
buf_index = 0;
pio_sm_set_in_pins(state_machine.pio,state_machine.state_machine,pin->number);
common_hal_rp2pio_statemachine_set_interrupt_handler(&state_machine,&common_hal_pulseio_pulsein_interrupt,NULL,PIO_IRQ0_INTE_SM0_RXNEMPTY_BITS);
pio_sm_set_in_pins(self->state_machine.pio,self->state_machine.state_machine,pin->number);
common_hal_rp2pio_statemachine_set_interrupt_handler(&(self->state_machine),&common_hal_pulseio_pulsein_interrupt,NULL,PIO_IRQ0_INTE_SM0_RXNEMPTY_BITS);
// exec a set pindirs to 0 for input
pio_sm_exec(state_machine.pio,state_machine.state_machine,0xe080);
pio_sm_exec(self->state_machine.pio,self->state_machine.state_machine,0xe080);
// exec the appropriate wait for pin
if (self->idle_state == true) {
pio_sm_exec(self->state_machine.pio,self->state_machine.state_machine,0x2020);
} else {
pio_sm_exec(self->state_machine.pio,self->state_machine.state_machine,0x20a0);
}
pio_sm_set_enabled(state_machine.pio, state_machine.state_machine, true);
pio_sm_set_enabled(self->state_machine.pio, self->state_machine.state_machine, true);
}
bool common_hal_pulseio_pulsein_deinited(pulseio_pulsein_obj_t *self) {
@ -114,8 +108,9 @@ void common_hal_pulseio_pulsein_deinit(pulseio_pulsein_obj_t *self) {
return;
}
pio_sm_set_enabled(self->state_machine.pio, self->state_machine.state_machine, false);
pio_sm_unclaim(self->state_machine.pio, self->state_machine.state_machine);
common_hal_rp2pio_statemachine_deinit(&self->state_machine);
m_free(self->buffer);
reset_pin_number(self->pin);
self->pin = NO_PIN;
}