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Do not open the same PWM device again

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This commit is contained in:
Kamil Tomaszewski 2019-10-18 12:39:22 +02:00
parent 1decd111d5
commit b39ca3f8be
2 changed files with 6 additions and 4 deletions
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8
ports/cxd56/common-hal/pulseio/PWMOut.c
View File

@ -62,9 +62,11 @@ pwmout_result_t common_hal_pulseio_pwmout_construct(pulseio_pwmout_obj_t *self,
return PWMOUT_INVALID_PIN; return PWMOUT_INVALID_PIN;
} }
pwmout_dev[self->number].fd = open(pwmout_dev[self->number].devpath, O_RDONLY);
if (pwmout_dev[self->number].fd < 0) { if (pwmout_dev[self->number].fd < 0) {
return PWMOUT_INVALID_PIN; pwmout_dev[self->number].fd = open(pwmout_dev[self->number].devpath, O_RDONLY);
if (pwmout_dev[self->number].fd < 0) {
return PWMOUT_INVALID_PIN;
}
} }
self->info.frequency = frequency; self->info.frequency = frequency;
@ -97,7 +99,7 @@ void common_hal_pulseio_pwmout_deinit(pulseio_pwmout_obj_t *self) {
} }
bool common_hal_pulseio_pwmout_deinited(pulseio_pwmout_obj_t *self) { bool common_hal_pulseio_pwmout_deinited(pulseio_pwmout_obj_t *self) {
return self->pin == mp_const_none; return pwmout_dev[self->number].fd < 0;
} }
void common_hal_pulseio_pwmout_set_duty_cycle(pulseio_pwmout_obj_t *self, uint16_t duty) { void common_hal_pulseio_pwmout_set_duty_cycle(pulseio_pwmout_obj_t *self, uint16_t duty) {

2
ports/cxd56/common-hal/pulseio/PWMOut.h
View File

@ -38,7 +38,7 @@ typedef struct {
const mcu_pin_obj_t *pin; const mcu_pin_obj_t *pin;
struct pwm_info_s info; struct pwm_info_s info;
bool variable_frequency; bool variable_frequency;
uint8_t number; int8_t number;
} pulseio_pwmout_obj_t; } pulseio_pwmout_obj_t;
void pwmout_reset(void); void pwmout_reset(void);