166 lines
5.6 KiB
C
166 lines
5.6 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020 Philipp Ebensberger
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef MICROPY_INCLUDED_MIMXRT_PIN_H
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#define MICROPY_INCLUDED_MIMXRT_PIN_H
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#include <stdint.h>
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#include "py/obj.h"
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#include "shared/runtime/mpirq.h"
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#include "fsl_gpio.h"
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// ------------------------------------------------------------------------------------------------------------------ //
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#define IS_GPIO_MODE(MODE) (((MODE) == PIN_MODE_IN) || \
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((MODE) == PIN_MODE_OUT) || \
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((MODE) == PIN_MODE_OPEN_DRAIN) || \
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((MODE) == PIN_MODE_ALT))
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#define IS_GPIO_DRIVE(DRIVE) (((DRIVE) == PIN_DRIVE_OFF) || \
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((DRIVE) == PIN_DRIVE_0) || \
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((DRIVE) == PIN_DRIVE_1) || \
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((DRIVE) == PIN_DRIVE_2) || \
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((DRIVE) == PIN_DRIVE_3) || \
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((DRIVE) == PIN_DRIVE_4) || \
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((DRIVE) == PIN_DRIVE_5) || \
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((DRIVE) == PIN_DRIVE_6))
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// ------------------------------------------------------------------------------------------------------------------ //
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enum {
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PIN_MODE_IN = 0,
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PIN_MODE_OUT,
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PIN_MODE_OPEN_DRAIN,
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PIN_MODE_ALT,
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PIN_MODE_SKIP,
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};
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enum {
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PIN_AF_MODE_ALT0 = 0,
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PIN_AF_MODE_ALT1,
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PIN_AF_MODE_ALT2,
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PIN_AF_MODE_ALT3,
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PIN_AF_MODE_ALT4,
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PIN_AF_MODE_ALT5,
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PIN_AF_MODE_ALT6,
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PIN_AF_MODE_ALT7,
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PIN_AF_MODE_ALT8,
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PIN_AF_MODE_ALT9,
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};
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enum {
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PIN_PULL_DOWN_100K = 0,
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PIN_PULL_UP_47K,
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PIN_PULL_UP_100K,
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PIN_PULL_UP_22K,
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PIN_PULL_DISABLED,
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PIN_PULL_HOLD,
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};
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enum {
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PIN_DRIVE_OFF = 0b000,
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PIN_DRIVE_0, // R0 (150 Ohm @3.3V / 260 Ohm @ 1.8V)
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PIN_DRIVE_1, // R0/2
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PIN_DRIVE_2, // R0/3
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PIN_DRIVE_3, // R0/4
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PIN_DRIVE_4, // R0/5
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PIN_DRIVE_5, // R0/6
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PIN_DRIVE_6, // R0/7
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};
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// ------------------------------------------------------------------------------------------------------------------ //
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typedef struct {
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mp_obj_base_t base;
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qstr name; // port name
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uint8_t af_mode; // alternate function
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uint8_t input_daisy;
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void *instance; // pointer to peripheral instance for alternate function
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uint32_t input_register;
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uint32_t pad_config; // pad configuration for alternate function
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} machine_pin_af_obj_t;
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typedef struct {
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ADC_Type *instance;
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uint8_t channel;
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} machine_pin_adc_obj_t;
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typedef struct {
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mp_obj_base_t base;
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qstr name; // pad name
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GPIO_Type *gpio; // gpio instance for pin
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uint32_t pin; // pin number
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uint32_t muxRegister;
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uint32_t configRegister;
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uint8_t af_list_len; // length of available alternate functions list
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uint8_t adc_list_len; // length of available ADC options list
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const machine_pin_af_obj_t *af_list; // pointer to list with alternate functions
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const machine_pin_adc_obj_t *adc_list; // pointer to list with ADC options
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} machine_pin_obj_t;
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typedef struct _machine_pin_irq_obj_t {
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mp_irq_obj_t base;
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uint32_t flags;
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uint32_t trigger;
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} machine_pin_irq_obj_t;
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// ------------------------------------------------------------------------------------------------------------------ //
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extern const mp_obj_type_t machine_pin_type;
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extern const mp_obj_type_t machine_pin_af_type;
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// ------------------------------------------------------------------------------------------------------------------ //
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// Include board specific pins
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#include "genhdr/pins.h" // pins.h must included at this location
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extern const machine_pin_obj_t *machine_pin_board_pins[];
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extern const uint32_t num_board_pins;
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extern const mp_obj_type_t machine_pin_board_pins_obj_type;
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extern const mp_obj_type_t machine_pin_cpu_pins_obj_type;
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extern const mp_obj_dict_t machine_pin_cpu_pins_locals_dict;
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extern const mp_obj_dict_t machine_pin_board_pins_locals_dict;
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// ------------------------------------------------------------------------------------------------------------------ //
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void pin_init(void);
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uint32_t pin_get_mode(const machine_pin_obj_t *pin);
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uint32_t pin_get_af(const machine_pin_obj_t *pin);
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const machine_pin_obj_t *pin_find(mp_obj_t user_obj);
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const machine_pin_obj_t *pin_find_named_pin(const mp_obj_dict_t *named_pins, mp_obj_t name);
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const machine_pin_af_obj_t *pin_find_af(const machine_pin_obj_t *pin, uint8_t fn);
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const machine_pin_af_obj_t *pin_find_af_by_index(const machine_pin_obj_t *pin, mp_uint_t af_idx);
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const machine_pin_af_obj_t *pin_find_af_by_name(const machine_pin_obj_t *pin, const char *name);
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void machine_pin_set_mode(const machine_pin_obj_t *pin, uint8_t mode);
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uint32_t pin_generate_config(const uint32_t pull, const uint32_t mode, const uint32_t drive, uint32_t config_register);
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#endif // MICROPY_INCLUDED_MIMXRT_PIN_H
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