nrf5/i2c: Adding files for hardware i2c machine module and adding config param in mpconfigport to disable by default.
This commit is contained in:
Glenn Ruben Bakke
parent
72b7e596ee
commit
d7eec2032e
138
nrf5/i2c.c
Normal file
138
nrf5/i2c.c
Normal file
@ -0,0 +1,138 @@
|
||||
/*
|
||||
* This file is part of the Micro Python project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2017 Glenn Ruben Bakke
|
||||
*
|
||||
* 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 <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "py/nlr.h"
|
||||
#include "py/runtime.h"
|
||||
#include "py/mphal.h"
|
||||
#include "i2c.h"
|
||||
#include "hal_twi.h"
|
||||
|
||||
#if MICROPY_PY_MACHINE_HW_I2C
|
||||
|
||||
typedef struct _machine_i2c_obj_t {
|
||||
mp_obj_base_t base;
|
||||
TWI_HandleTypeDef *i2c;
|
||||
} machine_i2c_obj_t;
|
||||
|
||||
TWI_HandleTypeDef I2CHandle0 = {.instance = NULL, .id = 0};
|
||||
TWI_HandleTypeDef I2CHandle1 = {.instance = NULL, .id = 1};
|
||||
|
||||
STATIC const machine_i2c_obj_t machine_i2c_obj[] = {
|
||||
{{&machine_i2c_type}, &I2CHandle0},
|
||||
{{&machine_i2c_type}, &I2CHandle1},
|
||||
};
|
||||
|
||||
void i2c_init0(void) {
|
||||
// reset the I2C handles
|
||||
memset(&I2CHandle0, 0, sizeof(TWI_HandleTypeDef));
|
||||
I2CHandle0.instance = TWI_BASE(0);
|
||||
memset(&I2CHandle1, 0, sizeof(TWI_HandleTypeDef));
|
||||
I2CHandle0.instance = TWI_BASE(1);
|
||||
}
|
||||
|
||||
STATIC int i2c_find(mp_obj_t id) {
|
||||
// given an integer id
|
||||
int i2c_id = mp_obj_get_int(id);
|
||||
if (i2c_id >= 0 && i2c_id <= MP_ARRAY_SIZE(machine_i2c_obj)
|
||||
&& machine_i2c_obj[i2c_id].i2c != NULL) {
|
||||
return i2c_id;
|
||||
}
|
||||
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError,
|
||||
"I2C(%d) does not exist", i2c_id));
|
||||
}
|
||||
|
||||
STATIC void i2c_print(const mp_print_t *print, mp_obj_t o, mp_print_kind_t kind) {
|
||||
machine_i2c_obj_t *self = o;
|
||||
mp_printf(print, "I2C(%u)", self->i2c->id);
|
||||
}
|
||||
|
||||
/******************************************************************************/
|
||||
/* MicroPython bindings for machine API */
|
||||
|
||||
// for make_new
|
||||
enum {
|
||||
ARG_NEW_id,
|
||||
};
|
||||
|
||||
STATIC mp_obj_t machine_i2c_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
|
||||
static const mp_arg_t allowed_args[] = {
|
||||
{ MP_QSTR_id, MP_ARG_OBJ, {.u_obj = MP_OBJ_NEW_SMALL_INT(-1)} },
|
||||
};
|
||||
|
||||
// parse args
|
||||
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
|
||||
mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
|
||||
|
||||
if (args[ARG_NEW_id].u_obj == MP_OBJ_NEW_SMALL_INT(-1)) {
|
||||
// index -1 does not exist
|
||||
return mp_const_none;
|
||||
// TODO: raise exception
|
||||
}
|
||||
|
||||
// get static peripheral object
|
||||
int i2c_id = i2c_find(args[ARG_NEW_id].u_obj);
|
||||
const machine_i2c_obj_t *self = &machine_i2c_obj[i2c_id];
|
||||
|
||||
hal_twi_init(self->i2c->instance, &self->i2c->init);
|
||||
|
||||
return MP_OBJ_FROM_PTR(self);
|
||||
}
|
||||
|
||||
STATIC const mp_map_elem_t pyb_i2c_locals_dict_table[] = {
|
||||
// instance methods
|
||||
#if 0
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_init), (mp_obj_t)&machine_i2c_init_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_deinit), (mp_obj_t)&machine_i2c_deinit_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_is_ready), (mp_obj_t)&machine_i2c_is_ready_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_scan), (mp_obj_t)&machine_i2c_scan_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_send), (mp_obj_t)&machine_i2c_send_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_recv), (mp_obj_t)&machine_i2c_recv_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_mem_read), (mp_obj_t)&machine_i2c_mem_read_obj },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_mem_write), (mp_obj_t)&machine_i2c_mem_write_obj },
|
||||
#endif
|
||||
// class constants
|
||||
/// \constant MASTER - for initialising the bus to master mode
|
||||
/// \constant SLAVE - for initialising the bus to slave mode
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_MASTER), MP_OBJ_NEW_SMALL_INT(HAL_TWI_MASTER) },
|
||||
{ MP_OBJ_NEW_QSTR(MP_QSTR_SLAVE), MP_OBJ_NEW_SMALL_INT(HAL_TWI_SLAVE) },
|
||||
};
|
||||
|
||||
STATIC MP_DEFINE_CONST_DICT(pyb_i2c_locals_dict, pyb_i2c_locals_dict_table);
|
||||
|
||||
const mp_obj_type_t machine_i2c_type = {
|
||||
{ &mp_type_type },
|
||||
.name = MP_QSTR_I2C,
|
||||
.print = i2c_print,
|
||||
.make_new = machine_i2c_make_new,
|
||||
#if 0
|
||||
.locals_dict = (mp_obj_t)&machine_i2c_locals_dict
|
||||
#endif
|
||||
};
|
||||
|
||||
#endif // MICROPY_PY_MACHINE_HW_I2C
|
||||
36
nrf5/i2c.h
Normal file
36
nrf5/i2c.h
Normal file
@ -0,0 +1,36 @@
|
||||
/*
|
||||
* This file is part of the Micro Python project, http://micropython.org/
|
||||
*
|
||||
* The MIT License (MIT)
|
||||
*
|
||||
* Copyright (c) 2017 Glenn Ruben Bakke
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef I2C_H__
|
||||
#define I2C_H__
|
||||
|
||||
#include "hal_twi.h"
|
||||
|
||||
extern const mp_obj_type_t machine_i2c_type;
|
||||
|
||||
void i2c_init0(void);
|
||||
|
||||
#endif // I2C_H__
|
||||
@ -104,6 +104,9 @@
|
||||
#define MICROPY_PY_MACHINE_SPI_MIN_DELAY (0)
|
||||
#define MICROPY_PY_FRAMEBUF (0)
|
||||
|
||||
#ifndef MICROPY_PY_MACHINE_HW_I2C
|
||||
#define MICROPY_PY_MACHINE_HW_I2C (0)
|
||||
#endif
|
||||
|
||||
#ifndef MICROPY_PY_MACHINE_SPI
|
||||
#define MICROPY_PY_MACHINE_SPI (1)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user