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esp32/machine_pin: Add new PULL_HOLD pin pull mode.

This commit is contained in:
Damien George 2019-03-08 23:51:39 +11:00
parent 349b54525e
commit ddc934631c
1 changed files with 13 additions and 1 deletions
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14
ports/esp32/machine_pin.c
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@ -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) },