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Ensure pin is left low after PulseOut

This commit is contained in:
root 2021-07-19 11:46:09 -05:00
parent 3c25d8e2a0
commit 8d79d4e5ee
1 changed files with 8 additions and 2 deletions
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10
ports/raspberrypi/common-hal/pulseio/PulseOut.c
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@ -34,6 +34,7 @@
#include "shared-bindings/microcontroller/__init__.h"
#include "common-hal/pwmio/PWMOut.h"
#include "supervisor/shared/translate.h"
#include "src/rp2040/hardware_structs/include/hardware/structs/pwm.h"
#include "src/rp2_common/hardware_pwm/include/hardware/pwm.h"
#include "src/common/pico_time/include/pico/time.h"
@ -130,7 +131,12 @@ void common_hal_pulseio_pulseout_send(pulseio_pulseout_obj_t *self, uint16_t *pu
// signal.
RUN_BACKGROUND_TASKS;
}
// Short delay to give pin time to settle before disabling PWM
common_hal_mcu_delay_us(min_pulse);
// Ensure pin is left low
pwm_hw->slice[self->slice].ctr = 0;
pwm_hw->slice[self->slice].cc = 0;
pwm_hw->slice[self->slice].top = 0;
pwm_hw->slice[self->slice].div = 1u << PWM_CH0_DIV_INT_LSB;
pwm_hw->slice[self->slice].csr = PWM_CH0_CSR_EN_BITS;
pwm_hw->slice[self->slice].csr = 0;
pwm_set_enabled(self->slice,false);
}