/* * This file is part of the MicroPython project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2016-2021 Damien P. George * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include #include #include "py/runtime.h" #include "py/mphal.h" #include "extmod/modmachine.h" #include "extmod/virtpin.h" #include "shared/runtime/mpirq.h" #include "modmachine.h" #include "machine_pin.h" #include "hardware/irq.h" #include "hardware/regs/intctrl.h" #include "hardware/structs/iobank0.h" #include "hardware/structs/padsbank0.h" // These can be or'd together. #define GPIO_PULL_UP (1) #define GPIO_PULL_DOWN (2) #define GPIO_IRQ_ALL (0xf) // Macros to access the state of the hardware. #define GPIO_GET_FUNCSEL(id) ((iobank0_hw->io[(id)].ctrl & IO_BANK0_GPIO0_CTRL_FUNCSEL_BITS) >> IO_BANK0_GPIO0_CTRL_FUNCSEL_LSB) #define GPIO_IS_OUT(id) (sio_hw->gpio_oe & (1 << (id))) #define GPIO_IS_PULL_UP(id) (padsbank0_hw->io[(id)] & PADS_BANK0_GPIO0_PUE_BITS) #define GPIO_IS_PULL_DOWN(id) (padsbank0_hw->io[(id)] & PADS_BANK0_GPIO0_PDE_BITS) // Open drain behaviour is simulated. #define GPIO_IS_OPEN_DRAIN(id) (machine_pin_open_drain_mask & (1 << (id))) #ifndef MICROPY_HW_PIN_RESERVED #define MICROPY_HW_PIN_RESERVED(i) (0) #endif MP_DEFINE_CONST_OBJ_TYPE( machine_pin_af_type, MP_QSTR_PinAF, MP_TYPE_FLAG_NONE ); MP_DEFINE_CONST_OBJ_TYPE( pin_cpu_pins_obj_type, MP_QSTR_cpu, MP_TYPE_FLAG_NONE, locals_dict, &pin_cpu_pins_locals_dict ); MP_DEFINE_CONST_OBJ_TYPE( pin_board_pins_obj_type, MP_QSTR_board, MP_TYPE_FLAG_NONE, locals_dict, &pin_board_pins_locals_dict ); typedef struct _machine_pin_irq_obj_t { mp_irq_obj_t base; uint32_t flags; uint32_t trigger; } machine_pin_irq_obj_t; STATIC const mp_irq_methods_t machine_pin_irq_methods; extern const machine_pin_obj_t *machine_pin_cpu_pins[NUM_BANK0_GPIOS]; // Mask with "1" indicating that the corresponding pin is in simulated open-drain mode. uint32_t machine_pin_open_drain_mask; #if MICROPY_HW_PIN_EXT_COUNT STATIC inline bool is_ext_pin(__unused const machine_pin_obj_t *self) { return self->is_ext; } #else #define is_ext_pin(x) false #endif STATIC void gpio_irq(void) { for (int i = 0; i < 4; ++i) { uint32_t intr = iobank0_hw->intr[i]; if (intr) { for (int j = 0; j < 8; ++j) { if (intr & 0xf) { uint32_t gpio = 8 * i + j; gpio_acknowledge_irq(gpio, intr & 0xf); machine_pin_irq_obj_t *irq = MP_STATE_PORT(machine_pin_irq_obj[gpio]); if (irq != NULL && (intr & irq->trigger)) { irq->flags = intr & irq->trigger; mp_irq_handler(&irq->base); } } intr >>= 4; } } } } void machine_pin_init(void) { memset(MP_STATE_PORT(machine_pin_irq_obj), 0, sizeof(MP_STATE_PORT(machine_pin_irq_obj))); irq_add_shared_handler(IO_IRQ_BANK0, gpio_irq, PICO_SHARED_IRQ_HANDLER_DEFAULT_ORDER_PRIORITY); irq_set_enabled(IO_IRQ_BANK0, true); #if MICROPY_HW_PIN_EXT_COUNT machine_pin_ext_init(); #endif } void machine_pin_deinit(void) { for (int i = 0; i < NUM_BANK0_GPIOS; ++i) { if (MICROPY_HW_PIN_RESERVED(i)) { continue; } gpio_set_irq_enabled(i, GPIO_IRQ_ALL, false); } irq_remove_handler(IO_IRQ_BANK0, gpio_irq); } const machine_pin_obj_t *machine_pin_find_named(const mp_obj_dict_t *named_pins, mp_obj_t name) { const mp_map_t *named_map = &named_pins->map; mp_map_elem_t *named_elem = mp_map_lookup((mp_map_t *)named_map, name, MP_MAP_LOOKUP); if (named_elem != NULL && named_elem->value != NULL) { return MP_OBJ_TO_PTR(named_elem->value); } return NULL; } const machine_pin_af_obj_t *machine_pin_find_alt(const machine_pin_obj_t *pin, uint8_t fn) { const machine_pin_af_obj_t *af = pin->af; for (mp_uint_t i = 0; i < pin->af_num; i++, af++) { if (af->fn == fn) { return af; } } return NULL; } const machine_pin_af_obj_t *machine_pin_find_alt_by_index(const machine_pin_obj_t *pin, mp_uint_t af_idx) { const machine_pin_af_obj_t *af = pin->af; for (mp_uint_t i = 0; i < pin->af_num; i++, af++) { if (af->idx == af_idx) { return af; } } return NULL; } const machine_pin_obj_t *machine_pin_find(mp_obj_t pin) { // Is already a object of the proper type if (mp_obj_is_type(pin, &machine_pin_type)) { return pin; } if (mp_obj_is_str(pin)) { const char *name = mp_obj_str_get_str(pin); // Try to find the pin in the board pins first. const machine_pin_obj_t *self = machine_pin_find_named(&pin_board_pins_locals_dict, pin); if (self != NULL) { return self; } // If not found, try to find the pin in the cpu pins which include // CPU and and externally controlled pins (if any). self = machine_pin_find_named(&pin_cpu_pins_locals_dict, pin); if (self != NULL) { return self; } mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("unknown named pin \"%s\""), name); } else if (mp_obj_is_int(pin)) { // get the wanted pin object int wanted_pin = mp_obj_get_int(pin); if (0 <= wanted_pin && wanted_pin < MP_ARRAY_SIZE(machine_pin_cpu_pins)) { return machine_pin_cpu_pins[wanted_pin]; } } mp_raise_ValueError("invalid pin"); } STATIC void machine_pin_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) { machine_pin_obj_t *self = self_in; uint funcsel = GPIO_GET_FUNCSEL(self->id); qstr mode_qst; if (!is_ext_pin(self)) { if (funcsel == GPIO_FUNC_SIO) { if (GPIO_IS_OPEN_DRAIN(self->id)) { mode_qst = MP_QSTR_OPEN_DRAIN; } else if (GPIO_IS_OUT(self->id)) { mode_qst = MP_QSTR_OUT; } else { mode_qst = MP_QSTR_IN; } } else { mode_qst = MP_QSTR_ALT; } mp_printf(print, "Pin(%q, mode=%q", self->name, mode_qst); bool pull_up = false; if (GPIO_IS_PULL_UP(self->id)) { mp_printf(print, ", pull=%q", MP_QSTR_PULL_UP); pull_up = true; } if (GPIO_IS_PULL_DOWN(self->id)) { if (pull_up) { mp_printf(print, "|%q", MP_QSTR_PULL_DOWN); } else { mp_printf(print, ", pull=%q", MP_QSTR_PULL_DOWN); } } if (funcsel != GPIO_FUNC_SIO) { const machine_pin_af_obj_t *af = machine_pin_find_alt_by_index(self, funcsel); if (af == NULL) { mp_printf(print, ", alt=%u", funcsel); } else { mp_printf(print, ", alt=%q", af->name); } } } else { #if MICROPY_HW_PIN_EXT_COUNT mode_qst = (self->is_output) ? MP_QSTR_OUT : MP_QSTR_IN; mp_printf(print, "Pin(%q, mode=%q", self->name, mode_qst); #endif } mp_printf(print, ")"); } enum { ARG_mode, ARG_pull, ARG_value, ARG_alt }; static const mp_arg_t allowed_args[] = { {MP_QSTR_mode, MP_ARG_OBJ, {.u_rom_obj = MP_ROM_NONE}}, {MP_QSTR_pull, MP_ARG_OBJ, {.u_rom_obj = MP_ROM_NONE}}, {MP_QSTR_value, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_rom_obj = MP_ROM_NONE}}, {MP_QSTR_alt, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = GPIO_FUNC_SIO}}, }; STATIC mp_obj_t machine_pin_obj_init_helper(const machine_pin_obj_t *self, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { // parse args mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)]; mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); if (is_ext_pin(self) && args[ARG_pull].u_obj != mp_const_none) { mp_raise_ValueError("pulls are not supported for external pins"); } if (is_ext_pin(self) && args[ARG_alt].u_int != GPIO_FUNC_SIO) { mp_raise_ValueError("alternate functions are not supported for external pins"); } // get initial value of pin (only valid for OUT and OPEN_DRAIN modes) int value = -1; if (args[ARG_value].u_obj != mp_const_none) { value = mp_obj_is_true(args[ARG_value].u_obj); } // configure mode if (args[ARG_mode].u_obj != mp_const_none) { mp_int_t mode = mp_obj_get_int(args[ARG_mode].u_obj); if (is_ext_pin(self)) { #if MICROPY_HW_PIN_EXT_COUNT // The regular Pins are const, but the external pins are mutable. machine_pin_obj_t *mutable_self = (machine_pin_obj_t *)self; machine_pin_ext_config(mutable_self, mode, value); #endif } else if (mode == MACHINE_PIN_MODE_IN) { mp_hal_pin_input(self->id); } else if (mode == MACHINE_PIN_MODE_OUT) { if (value != -1) { // set initial output value before configuring mode gpio_put(self->id, value); } mp_hal_pin_output(self->id); } else if (mode == MACHINE_PIN_MODE_OPEN_DRAIN) { mp_hal_pin_open_drain_with_value(self->id, value == -1 ? 1 : value); } else { // Configure alternate function. mp_uint_t af = args[ARG_alt].u_int; if (machine_pin_find_alt(self, af) == NULL) { mp_raise_msg_varg(&mp_type_ValueError, MP_ERROR_TEXT("invalid pin af: %d"), af); } gpio_set_function(self->id, af); machine_pin_open_drain_mask &= ~(1 << self->id); } } if (!is_ext_pin(self)) { // Configure pull (unconditionally because None means no-pull). uint32_t pull = 0; if (args[ARG_pull].u_obj != mp_const_none) { pull = mp_obj_get_int(args[ARG_pull].u_obj); } gpio_set_pulls(self->id, pull & GPIO_PULL_UP, pull & GPIO_PULL_DOWN); } return mp_const_none; } // constructor(id, ...) mp_obj_t mp_pin_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) { mp_arg_check_num(n_args, n_kw, 1, MP_OBJ_FUN_ARGS_MAX, true); const machine_pin_obj_t *self = machine_pin_find(args[0]); if (n_args > 1 || n_kw > 0) { // pin mode given, so configure this GPIO mp_map_t kw_args; mp_map_init_fixed_table(&kw_args, n_kw, args + n_args); machine_pin_obj_init_helper(self, n_args - 1, args + 1, &kw_args); } return MP_OBJ_FROM_PTR(self); } // fast method for getting/setting pin value STATIC mp_obj_t machine_pin_call(mp_obj_t self_in, size_t n_args, size_t n_kw, const mp_obj_t *args) { mp_arg_check_num(n_args, n_kw, 0, 1, false); machine_pin_obj_t *self = self_in; if (n_args == 0) { // get pin if (is_ext_pin(self)) { #if MICROPY_HW_PIN_EXT_COUNT return MP_OBJ_NEW_SMALL_INT(machine_pin_ext_get(self)); #endif } else { return MP_OBJ_NEW_SMALL_INT(gpio_get(self->id)); } } else { // set pin bool value = mp_obj_is_true(args[0]); if (is_ext_pin(self)) { #if MICROPY_HW_PIN_EXT_COUNT machine_pin_ext_set(self, value); #endif } else if (GPIO_IS_OPEN_DRAIN(self->id)) { MP_STATIC_ASSERT(GPIO_IN == 0 && GPIO_OUT == 1); gpio_set_dir(self->id, 1 - value); } else { gpio_put(self->id, value); } } return mp_const_none; } // pin.init(mode, pull) STATIC mp_obj_t machine_pin_obj_init(size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) { return machine_pin_obj_init_helper(args[0], n_args - 1, args + 1, kw_args); } MP_DEFINE_CONST_FUN_OBJ_KW(machine_pin_init_obj, 1, machine_pin_obj_init); // pin.value([value]) STATIC mp_obj_t machine_pin_value(size_t n_args, const mp_obj_t *args) { return machine_pin_call(args[0], n_args - 1, 0, args + 1); } STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(machine_pin_value_obj, 1, 2, machine_pin_value); // pin.low() STATIC mp_obj_t machine_pin_low(mp_obj_t self_in) { machine_pin_obj_t *self = MP_OBJ_TO_PTR(self_in); if (is_ext_pin(self)) { #if MICROPY_HW_PIN_EXT_COUNT machine_pin_ext_set(self, 0); #endif } else if (GPIO_IS_OPEN_DRAIN(self->id)) { gpio_set_dir(self->id, GPIO_OUT); } else { gpio_clr_mask(1u << self->id); } return mp_const_none; } STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_pin_low_obj, machine_pin_low); // pin.high() STATIC mp_obj_t machine_pin_high(mp_obj_t self_in) { machine_pin_obj_t *self = MP_OBJ_TO_PTR(self_in); if (is_ext_pin(self)) { #if MICROPY_HW_PIN_EXT_COUNT machine_pin_ext_set(self, 1); #endif } else if (GPIO_IS_OPEN_DRAIN(self->id)) { gpio_set_dir(self->id, GPIO_IN); } else { gpio_set_mask(1u << self->id); } return mp_const_none; } STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_pin_high_obj, machine_pin_high); // pin.toggle() STATIC mp_obj_t machine_pin_toggle(mp_obj_t self_in) { machine_pin_obj_t *self = MP_OBJ_TO_PTR(self_in); if (is_ext_pin(self)) { #if MICROPY_HW_PIN_EXT_COUNT machine_pin_ext_set(self, self->last_output_value ^ 1); #endif } else if (GPIO_IS_OPEN_DRAIN(self->id)) { if (GPIO_IS_OUT(self->id)) { gpio_set_dir(self->id, GPIO_IN); } else { gpio_set_dir(self->id, GPIO_OUT); } } else { gpio_xor_mask(1u << self->id); } return mp_const_none; } STATIC MP_DEFINE_CONST_FUN_OBJ_1(machine_pin_toggle_obj, machine_pin_toggle); STATIC machine_pin_irq_obj_t *machine_pin_get_irq(mp_hal_pin_obj_t pin) { // Get the IRQ object. machine_pin_irq_obj_t *irq = MP_STATE_PORT(machine_pin_irq_obj[pin]); // Allocate the IRQ object if it doesn't already exist. if (irq == NULL) { irq = m_new_obj(machine_pin_irq_obj_t); irq->base.base.type = &mp_irq_type; irq->base.methods = (mp_irq_methods_t *)&machine_pin_irq_methods; irq->base.parent = MP_OBJ_FROM_PTR(machine_pin_cpu_pins[pin]); irq->base.handler = mp_const_none; irq->base.ishard = false; MP_STATE_PORT(machine_pin_irq_obj[pin]) = irq; } return irq; } void mp_hal_pin_interrupt(mp_hal_pin_obj_t pin, mp_obj_t handler, mp_uint_t trigger, bool hard) { machine_pin_irq_obj_t *irq = machine_pin_get_irq(pin); // Disable all IRQs while data is updated. gpio_set_irq_enabled(pin, GPIO_IRQ_ALL, false); // Update IRQ data. irq->base.handler = handler; irq->base.ishard = hard; irq->flags = 0; irq->trigger = trigger; // Enable IRQ if a handler is given. if (handler != mp_const_none && trigger != MP_HAL_PIN_TRIGGER_NONE) { gpio_set_irq_enabled(pin, trigger, true); } } // pin.irq(handler=None, trigger=IRQ_FALLING|IRQ_RISING, hard=False) STATIC mp_obj_t machine_pin_irq(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) { enum { ARG_handler, ARG_trigger, ARG_hard }; static const mp_arg_t allowed_args[] = { { MP_QSTR_handler, MP_ARG_OBJ, {.u_rom_obj = MP_ROM_NONE} }, { MP_QSTR_trigger, MP_ARG_INT, {.u_int = MP_HAL_PIN_TRIGGER_FALL | MP_HAL_PIN_TRIGGER_RISE} }, { MP_QSTR_hard, MP_ARG_BOOL, {.u_bool = false} }, }; machine_pin_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]); if (is_ext_pin(self)) { mp_raise_ValueError(MP_ERROR_TEXT("expecting a regular GPIO Pin")); } mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)]; mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args); machine_pin_irq_obj_t *irq = machine_pin_get_irq(self->id); if (n_args > 1 || kw_args->used != 0) { // Update IRQ data. mp_obj_t handler = args[ARG_handler].u_obj; mp_uint_t trigger = args[ARG_trigger].u_int; bool hard = args[ARG_hard].u_bool; mp_hal_pin_interrupt(self->id, handler, trigger, hard); } return MP_OBJ_FROM_PTR(irq); } STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_pin_irq_obj, 1, machine_pin_irq); STATIC const mp_rom_map_elem_t machine_pin_locals_dict_table[] = { // instance methods { MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_pin_init_obj) }, { MP_ROM_QSTR(MP_QSTR_value), MP_ROM_PTR(&machine_pin_value_obj) }, { MP_ROM_QSTR(MP_QSTR_low), MP_ROM_PTR(&machine_pin_low_obj) }, { MP_ROM_QSTR(MP_QSTR_high), MP_ROM_PTR(&machine_pin_high_obj) }, { MP_ROM_QSTR(MP_QSTR_off), MP_ROM_PTR(&machine_pin_low_obj) }, { MP_ROM_QSTR(MP_QSTR_on), MP_ROM_PTR(&machine_pin_high_obj) }, { MP_ROM_QSTR(MP_QSTR_toggle), MP_ROM_PTR(&machine_pin_toggle_obj) }, { MP_ROM_QSTR(MP_QSTR_irq), MP_ROM_PTR(&machine_pin_irq_obj) }, // class attributes { MP_ROM_QSTR(MP_QSTR_board), MP_ROM_PTR(&pin_board_pins_obj_type) }, { MP_ROM_QSTR(MP_QSTR_cpu), MP_ROM_PTR(&pin_cpu_pins_obj_type) }, // class constants { MP_ROM_QSTR(MP_QSTR_IN), MP_ROM_INT(MACHINE_PIN_MODE_IN) }, { MP_ROM_QSTR(MP_QSTR_OUT), MP_ROM_INT(MACHINE_PIN_MODE_OUT) }, { MP_ROM_QSTR(MP_QSTR_OPEN_DRAIN), MP_ROM_INT(MACHINE_PIN_MODE_OPEN_DRAIN) }, { MP_ROM_QSTR(MP_QSTR_ALT), MP_ROM_INT(MACHINE_PIN_MODE_ALT) }, { MP_ROM_QSTR(MP_QSTR_PULL_UP), MP_ROM_INT(GPIO_PULL_UP) }, { MP_ROM_QSTR(MP_QSTR_PULL_DOWN), MP_ROM_INT(GPIO_PULL_DOWN) }, { MP_ROM_QSTR(MP_QSTR_IRQ_RISING), MP_ROM_INT(GPIO_IRQ_EDGE_RISE) }, { MP_ROM_QSTR(MP_QSTR_IRQ_FALLING), MP_ROM_INT(GPIO_IRQ_EDGE_FALL) }, // Pins alternate functions { MP_ROM_QSTR(MP_QSTR_ALT_SPI), MP_ROM_INT(GPIO_FUNC_SPI) }, { MP_ROM_QSTR(MP_QSTR_ALT_UART), MP_ROM_INT(GPIO_FUNC_UART) }, { MP_ROM_QSTR(MP_QSTR_ALT_I2C), MP_ROM_INT(GPIO_FUNC_I2C) }, { MP_ROM_QSTR(MP_QSTR_ALT_PWM), MP_ROM_INT(GPIO_FUNC_PWM) }, { MP_ROM_QSTR(MP_QSTR_ALT_SIO), MP_ROM_INT(GPIO_FUNC_SIO) }, { MP_ROM_QSTR(MP_QSTR_ALT_PIO0), MP_ROM_INT(GPIO_FUNC_PIO0) }, { MP_ROM_QSTR(MP_QSTR_ALT_PIO1), MP_ROM_INT(GPIO_FUNC_PIO1) }, { MP_ROM_QSTR(MP_QSTR_ALT_GPCK), MP_ROM_INT(GPIO_FUNC_GPCK) }, { MP_ROM_QSTR(MP_QSTR_ALT_USB), MP_ROM_INT(GPIO_FUNC_USB) }, }; STATIC MP_DEFINE_CONST_DICT(machine_pin_locals_dict, machine_pin_locals_dict_table); STATIC mp_uint_t pin_ioctl(mp_obj_t self_in, mp_uint_t request, uintptr_t arg, int *errcode) { (void)errcode; machine_pin_obj_t *self = self_in; switch (request) { case MP_PIN_READ: { if (is_ext_pin(self)) { #if MICROPY_HW_PIN_EXT_COUNT return machine_pin_ext_get(self); #endif } else { return gpio_get(self->id); } } case MP_PIN_WRITE: { if (is_ext_pin(self)) { #if MICROPY_HW_PIN_EXT_COUNT machine_pin_ext_set(self, arg); #endif } else { gpio_put(self->id, arg); } return 0; } } return -1; } STATIC const mp_pin_p_t pin_pin_p = { .ioctl = pin_ioctl, }; MP_DEFINE_CONST_OBJ_TYPE( machine_pin_type, MP_QSTR_Pin, MP_TYPE_FLAG_NONE, make_new, mp_pin_make_new, print, machine_pin_print, call, machine_pin_call, protocol, &pin_pin_p, locals_dict, &machine_pin_locals_dict ); STATIC mp_uint_t machine_pin_irq_trigger(mp_obj_t self_in, mp_uint_t new_trigger) { machine_pin_obj_t *self = MP_OBJ_TO_PTR(self_in); machine_pin_irq_obj_t *irq = MP_STATE_PORT(machine_pin_irq_obj[self->id]); gpio_set_irq_enabled(self->id, GPIO_IRQ_ALL, false); irq->flags = 0; irq->trigger = new_trigger; gpio_set_irq_enabled(self->id, new_trigger, true); return 0; } STATIC mp_uint_t machine_pin_irq_info(mp_obj_t self_in, mp_uint_t info_type) { machine_pin_obj_t *self = MP_OBJ_TO_PTR(self_in); machine_pin_irq_obj_t *irq = MP_STATE_PORT(machine_pin_irq_obj[self->id]); if (info_type == MP_IRQ_INFO_FLAGS) { return irq->flags; } else if (info_type == MP_IRQ_INFO_TRIGGERS) { return irq->trigger; } return 0; } STATIC const mp_irq_methods_t machine_pin_irq_methods = { .trigger = machine_pin_irq_trigger, .info = machine_pin_irq_info, }; mp_hal_pin_obj_t mp_hal_get_pin_obj(mp_obj_t obj) { const machine_pin_obj_t *pin = machine_pin_find(obj); if (is_ext_pin(pin)) { mp_raise_ValueError(MP_ERROR_TEXT("expecting a regular GPIO Pin")); } return pin->id; } MP_REGISTER_ROOT_POINTER(void *machine_pin_irq_obj[30]);