diff options
| -rw-r--r-- | ports/esp32/machine_pin.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/ports/esp32/machine_pin.c b/ports/esp32/machine_pin.c index 648674f9a..cbd9ae7e9 100644 --- a/ports/esp32/machine_pin.c +++ b/ports/esp32/machine_pin.c @@ -39,6 +39,9 @@ #include "machine_rtc.h" #include "modesp32.h" +// Used to implement gpio_hold_en() functionality; value should be distinct from all IDF pull modes +#define GPIO_PULLHOLD (8) + typedef struct _machine_pin_obj_t { mp_obj_base_t base; gpio_num_t id; @@ -168,7 +171,15 @@ STATIC mp_obj_t machine_pin_obj_init_helper(const machine_pin_obj_t *self, size_ if (args[ARG_pull].u_obj == mp_const_none) { gpio_set_pull_mode(self->id, GPIO_FLOATING); } else { - gpio_set_pull_mode(self->id, mp_obj_get_int(args[ARG_pull].u_obj)); + int mode = mp_obj_get_int(args[ARG_pull].u_obj); + if (mode == GPIO_PULLHOLD) { + gpio_hold_en(self->id); + } else { + if (GPIO_IS_VALID_OUTPUT_GPIO(self->id)) { + gpio_hold_dis(self->id); + } + gpio_set_pull_mode(self->id, mode); + } } } @@ -320,6 +331,7 @@ STATIC const mp_rom_map_elem_t machine_pin_locals_dict_table[] = { { MP_ROM_QSTR(MP_QSTR_OPEN_DRAIN), MP_ROM_INT(GPIO_MODE_INPUT_OUTPUT_OD) }, { MP_ROM_QSTR(MP_QSTR_PULL_UP), MP_ROM_INT(GPIO_PULLUP_ONLY) }, { MP_ROM_QSTR(MP_QSTR_PULL_DOWN), MP_ROM_INT(GPIO_PULLDOWN_ONLY) }, + { MP_ROM_QSTR(MP_QSTR_PULL_HOLD), MP_ROM_INT(GPIO_PULLHOLD) }, { MP_ROM_QSTR(MP_QSTR_IRQ_RISING), MP_ROM_INT(GPIO_PIN_INTR_POSEDGE) }, { MP_ROM_QSTR(MP_QSTR_IRQ_FALLING), MP_ROM_INT(GPIO_PIN_INTR_NEGEDGE) }, { MP_ROM_QSTR(MP_QSTR_WAKE_LOW), MP_ROM_INT(GPIO_PIN_INTR_LOLEVEL) }, |