diff options
Diffstat (limited to 'esp8266')
| -rw-r--r-- | esp8266/Makefile | 2 | ||||
| -rw-r--r-- | esp8266/modonewire.c | 162 |
2 files changed, 1 insertions, 163 deletions
diff --git a/esp8266/Makefile b/esp8266/Makefile index 73547a4b7a..1c169862ea 100644 --- a/esp8266/Makefile +++ b/esp8266/Makefile @@ -84,7 +84,6 @@ SRC_C = \ modnetwork.c \ modutime.c \ moduos.c \ - modonewire.c \ ets_alt_task.c \ fatfs_port.c \ axtls_helpers.c \ @@ -93,6 +92,7 @@ SRC_C = \ EXTMOD_SRC_C = $(addprefix extmod/,\ modlwip.c \ + modonewire.c \ ) LIB_SRC_C = $(addprefix lib/,\ diff --git a/esp8266/modonewire.c b/esp8266/modonewire.c deleted file mode 100644 index 6f09071b1b..0000000000 --- a/esp8266/modonewire.c +++ /dev/null @@ -1,162 +0,0 @@ -/* - * This file is part of the MicroPython project, http://micropython.org/ - * - * The MIT License (MIT) - * - * Copyright (c) 2015-2017 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 <stdio.h> -#include <stdint.h> - -#include "py/obj.h" -#include "py/mphal.h" - -/******************************************************************************/ -// Low-level 1-Wire routines - -#define TIMING_RESET1 (480) -#define TIMING_RESET2 (40) -#define TIMING_RESET3 (420) -#define TIMING_READ1 (5) -#define TIMING_READ2 (5) -#define TIMING_READ3 (40) -#define TIMING_WRITE1 (10) -#define TIMING_WRITE2 (50) -#define TIMING_WRITE3 (10) - -STATIC int onewire_bus_reset(mp_hal_pin_obj_t pin) { - mp_hal_pin_write(pin, 0); - mp_hal_delay_us(TIMING_RESET1); - uint32_t i = mp_hal_quiet_timing_enter(); - mp_hal_pin_write(pin, 1); - mp_hal_delay_us_fast(TIMING_RESET2); - int status = !mp_hal_pin_read(pin); - mp_hal_quiet_timing_exit(i); - mp_hal_delay_us(TIMING_RESET3); - return status; -} - -STATIC int onewire_bus_readbit(mp_hal_pin_obj_t pin) { - mp_hal_pin_write(pin, 1); - uint32_t i = mp_hal_quiet_timing_enter(); - mp_hal_pin_write(pin, 0); - mp_hal_delay_us_fast(TIMING_READ1); - mp_hal_pin_write(pin, 1); - mp_hal_delay_us_fast(TIMING_READ2); - int value = mp_hal_pin_read(pin); - mp_hal_quiet_timing_exit(i); - mp_hal_delay_us_fast(TIMING_READ3); - return value; -} - -STATIC void onewire_bus_writebit(mp_hal_pin_obj_t pin, int value) { - uint32_t i = mp_hal_quiet_timing_enter(); - mp_hal_pin_write(pin, 0); - mp_hal_delay_us_fast(TIMING_WRITE1); - if (value) { - mp_hal_pin_write(pin, 1); - } - mp_hal_delay_us_fast(TIMING_WRITE2); - mp_hal_pin_write(pin, 1); - mp_hal_delay_us_fast(TIMING_WRITE3); - mp_hal_quiet_timing_exit(i); -} - -/******************************************************************************/ -// MicroPython bindings - -STATIC mp_obj_t onewire_reset(mp_obj_t pin_in) { - return mp_obj_new_bool(onewire_bus_reset(mp_hal_get_pin_obj(pin_in))); -} -STATIC MP_DEFINE_CONST_FUN_OBJ_1(onewire_reset_obj, onewire_reset); - -STATIC mp_obj_t onewire_readbit(mp_obj_t pin_in) { - return MP_OBJ_NEW_SMALL_INT(onewire_bus_readbit(mp_hal_get_pin_obj(pin_in))); -} -STATIC MP_DEFINE_CONST_FUN_OBJ_1(onewire_readbit_obj, onewire_readbit); - -STATIC mp_obj_t onewire_readbyte(mp_obj_t pin_in) { - mp_hal_pin_obj_t pin = mp_hal_get_pin_obj(pin_in); - uint8_t value = 0; - for (int i = 0; i < 8; ++i) { - value |= onewire_bus_readbit(pin) << i; - } - return MP_OBJ_NEW_SMALL_INT(value); -} -STATIC MP_DEFINE_CONST_FUN_OBJ_1(onewire_readbyte_obj, onewire_readbyte); - -STATIC mp_obj_t onewire_writebit(mp_obj_t pin_in, mp_obj_t value_in) { - onewire_bus_writebit(mp_hal_get_pin_obj(pin_in), mp_obj_get_int(value_in)); - return mp_const_none; -} -STATIC MP_DEFINE_CONST_FUN_OBJ_2(onewire_writebit_obj, onewire_writebit); - -STATIC mp_obj_t onewire_writebyte(mp_obj_t pin_in, mp_obj_t value_in) { - mp_hal_pin_obj_t pin = mp_hal_get_pin_obj(pin_in); - int value = mp_obj_get_int(value_in); - for (int i = 0; i < 8; ++i) { - onewire_bus_writebit(pin, value & 1); - value >>= 1; - } - return mp_const_none; -} -STATIC MP_DEFINE_CONST_FUN_OBJ_2(onewire_writebyte_obj, onewire_writebyte); - -STATIC mp_obj_t onewire_crc8(mp_obj_t data) { - mp_buffer_info_t bufinfo; - mp_get_buffer_raise(data, &bufinfo, MP_BUFFER_READ); - uint8_t crc = 0; - for (size_t i = 0; i < bufinfo.len; ++i) { - uint8_t byte = ((uint8_t*)bufinfo.buf)[i]; - for (int b = 0; b < 8; ++b) { - uint8_t fb_bit = (crc ^ byte) & 0x01; - if (fb_bit == 0x01) { - crc = crc ^ 0x18; - } - crc = (crc >> 1) & 0x7f; - if (fb_bit == 0x01) { - crc = crc | 0x80; - } - byte = byte >> 1; - } - } - return MP_OBJ_NEW_SMALL_INT(crc); -} -STATIC MP_DEFINE_CONST_FUN_OBJ_1(onewire_crc8_obj, onewire_crc8); - -STATIC const mp_map_elem_t onewire_module_globals_table[] = { - { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_onewire) }, - - { MP_ROM_QSTR(MP_QSTR_reset), MP_ROM_PTR((mp_obj_t)&onewire_reset_obj) }, - { MP_ROM_QSTR(MP_QSTR_readbit), MP_ROM_PTR((mp_obj_t)&onewire_readbit_obj) }, - { MP_ROM_QSTR(MP_QSTR_readbyte), MP_ROM_PTR((mp_obj_t)&onewire_readbyte_obj) }, - { MP_ROM_QSTR(MP_QSTR_writebit), MP_ROM_PTR((mp_obj_t)&onewire_writebit_obj) }, - { MP_ROM_QSTR(MP_QSTR_writebyte), MP_ROM_PTR((mp_obj_t)&onewire_writebyte_obj) }, - { MP_ROM_QSTR(MP_QSTR_crc8), MP_ROM_PTR((mp_obj_t)&onewire_crc8_obj) }, -}; - -STATIC MP_DEFINE_CONST_DICT(onewire_module_globals, onewire_module_globals_table); - -const mp_obj_module_t onewire_module = { - .base = { &mp_type_module }, - .globals = (mp_obj_dict_t*)&onewire_module_globals, -}; |