c25e12d0dd
Zephyr restructured its includes in v2.0 and removed compatibility shims after two releases in commit 1342dadc365ee22199e51779185899ddf7478686. Updates include paths in MicroPython accordingly to fix build errors in the zephyr port. These changes are compatible with Zephyr v2.0 and later.
138 lines
4.6 KiB
C
138 lines
4.6 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) 2013, 2014, 2015 Damien P. George
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* Copyright (c) 2019, NXP
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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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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <zephyr.h>
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#include <drivers/i2c.h>
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#include "py/runtime.h"
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#include "py/gc.h"
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#include "py/mphal.h"
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#include "py/mperrno.h"
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#include "extmod/machine_i2c.h"
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STATIC const mp_obj_type_t machine_hard_i2c_type;
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typedef struct _machine_hard_i2c_obj_t {
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mp_obj_base_t base;
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struct device *dev;
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bool restart;
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} machine_hard_i2c_obj_t;
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STATIC void machine_hard_i2c_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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machine_hard_i2c_obj_t *self = self_in;
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mp_printf(print, "%s", self->dev->config->name);
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}
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mp_obj_t machine_hard_i2c_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
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enum { ARG_id, ARG_scl, ARG_sda, ARG_freq, ARG_timeout };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_id, MP_ARG_REQUIRED | MP_ARG_OBJ },
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{ MP_QSTR_scl, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
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{ MP_QSTR_sda, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
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{ MP_QSTR_freq, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_obj = MP_OBJ_NULL} },
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{ MP_QSTR_timeout, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_obj = MP_OBJ_NULL} },
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};
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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const char *dev_name = mp_obj_str_get_str(args[ARG_id].u_obj);
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struct device *dev = device_get_binding(dev_name);
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if (dev == NULL) {
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mp_raise_ValueError("device not found");
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}
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if ((args[ARG_scl].u_obj != MP_OBJ_NULL) || (args[ARG_sda].u_obj != MP_OBJ_NULL)) {
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mp_raise_NotImplementedError("explicit choice of scl/sda is not implemented");
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}
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if ((args[ARG_freq].u_obj != MP_OBJ_NULL)) {
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mp_raise_NotImplementedError("explicit choice of freq is not implemented");
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}
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if ((args[ARG_timeout].u_obj != MP_OBJ_NULL)) {
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mp_raise_NotImplementedError("explicit choice of timeout is not implemented");
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}
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machine_hard_i2c_obj_t *self = m_new_obj(machine_hard_i2c_obj_t);
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self->base.type = &machine_hard_i2c_type;
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self->dev = dev;
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self->restart = false;
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return MP_OBJ_FROM_PTR(self);
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}
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STATIC int machine_hard_i2c_transfer_single(mp_obj_base_t *self_in, uint16_t addr, size_t len, uint8_t *buf, unsigned int flags) {
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machine_hard_i2c_obj_t *self = (machine_hard_i2c_obj_t *)self_in;
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struct i2c_msg msg;
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int ret;
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msg.buf = (u8_t*)buf;
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msg.len = len;
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msg.flags = 0;
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if (flags & MP_MACHINE_I2C_FLAG_READ) {
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msg.flags |= I2C_MSG_READ;
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} else {
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msg.flags |= I2C_MSG_WRITE;
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}
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if (self->restart) {
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msg.flags |= I2C_MSG_RESTART;
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}
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if (flags & MP_MACHINE_I2C_FLAG_STOP) {
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msg.flags |= I2C_MSG_STOP;
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self->restart = false;
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} else {
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self->restart = true;
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}
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ret = i2c_transfer(self->dev, &msg, 1, addr);
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return (ret < 0) ? -MP_EIO : len;
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}
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STATIC const mp_machine_i2c_p_t machine_hard_i2c_p = {
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.transfer = mp_machine_i2c_transfer_adaptor,
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.transfer_single = machine_hard_i2c_transfer_single,
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};
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STATIC const mp_obj_type_t machine_hard_i2c_type = {
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{ &mp_type_type },
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.name = MP_QSTR_I2C,
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.print = machine_hard_i2c_print,
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.make_new = machine_hard_i2c_make_new,
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.protocol = &machine_hard_i2c_p,
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.locals_dict = (mp_obj_dict_t*)&mp_machine_soft_i2c_locals_dict,
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};
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