101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
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/*
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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 "fsl_gpio.h"
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#include "py/obj.h"
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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_ALT,
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};
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enum {
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PIN_AF_MODE_ALT1 = 1,
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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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};
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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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uint32_t af_mode; // alternate function
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void *instance; // pointer to peripheral instance for alternate function
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uint32_t pad_config; // pad configuration for alternate function
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} pin_af_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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uint32_t mode; // current pin mode
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uint32_t af_mode; // current alternate function mode
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size_t af_list_len; // length of available alternate functions list
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const pin_af_obj_t *af_list; // pointer tolist with alternate functions
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} pin_obj_t;
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extern const mp_obj_type_t pin_type;
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extern const mp_obj_type_t pin_af_type;
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#define PIN_AF(_name, _af_mode, _instance, _pad_config) \
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{ \
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.base = { &pin_af_type }, \
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.name = MP_QSTR_##_name, \
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.af_mode = (uint32_t)(_af_mode), \
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.instance = (void *)(_instance), \
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.pad_config = (uint32_t)(_pad_config), \
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} \
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#define PIN(_name, _gpio, _pin, _af_list) \
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{ \
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.base = { &pin_type }, \
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.name = MP_QSTR_##_name, \
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.gpio = (_gpio), \
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.pin = (uint32_t)(_pin), \
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.muxRegister = (uint32_t)&(IOMUXC->SW_MUX_CTL_PAD[kIOMUXC_SW_MUX_CTL_PAD_##_name]), \
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.configRegister = (uint32_t)&(IOMUXC->SW_PAD_CTL_PAD[kIOMUXC_SW_PAD_CTL_PAD_##_name]), \
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.mode = PIN_MODE_IN, \
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.af_mode = PIN_AF_MODE_ALT5, \
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.af_list_len = (size_t)(sizeof((_af_list)) / sizeof(pin_af_obj_t)), \
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.af_list = (_af_list), \
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} \
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// Include board specific pins
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#include "pins.h"
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#endif // MICROPY_INCLUDED_MIMXRT_PIN_H
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