head 1.2; access; symbols micropython-1-5-2-base:1.1.1.1 MICROPYTHON:1.1.1; locks; strict; comment @ * @; 1.2 date 2026.10.15.05.28.45; author agc; state dead; branches; next 1.1; commitid aHLdC1EGCUYk7xZG; 1.1 date 2016.01.14.01.38.50; author agc; state Exp; branches 1.1.1.1; next ; commitid Q8liT0v6zMF95QQy; 1.1.1.1 date 2016.01.14.01.38.50; author agc; state Exp; branches; next ; commitid Q8liT0v6zMF95QQy; desc @@ 1.2 log @Remove waaaay old micropython sources which haven't been relevant for 10 years @ text @/* * This file is part of the Micro Python project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2013, 2014 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 #include #include "py/nlr.h" #include "py/runtime.h" #include "py/binary.h" #include "py/mphal.h" #include "adc.h" #include "pin.h" #include "genhdr/pins.h" #include "timer.h" /// \moduleref pyb /// \class ADC - analog to digital conversion: read analog values on a pin /// /// Usage: /// /// adc = pyb.ADC(pin) # create an analog object from a pin /// val = adc.read() # read an analog value /// /// adc = pyb.ADCAll(resolution) # creale an ADCAll object /// val = adc.read_channel(channel) # read the given channel /// val = adc.read_core_temp() # read MCU temperature /// val = adc.read_core_vbat() # read MCU VBAT /// val = adc.read_core_vref() # read MCU VREF /* ADC defintions */ #define ADCx (ADC1) #define ADCx_CLK_ENABLE __ADC1_CLK_ENABLE #define ADC_NUM_CHANNELS (19) #define ADC_NUM_GPIO_CHANNELS (16) #if defined(STM32F405xx) || defined(STM32F415xx) || \ defined(STM32F407xx) || defined(STM32F417xx) || \ defined(STM32F401xC) || defined(STM32F401xE) || \ defined(STM32F411xE) #define VBAT_DIV (2) #elif defined(STM32F427xx) || defined(STM32F429xx) || \ defined(STM32F437xx) || defined(STM32F439xx) || \ defined(STM32F746xx) #define VBAT_DIV (4) #else #error Unsupported processor #endif /* Core temperature sensor definitions */ #define CORE_TEMP_V25 (943) /* (0.76v/3.3v)*(2^ADC resoultion) */ #define CORE_TEMP_AVG_SLOPE (3) /* (2.5mv/3.3v)*(2^ADC resoultion) */ typedef struct _pyb_obj_adc_t { mp_obj_base_t base; mp_obj_t pin_name; int channel; ADC_HandleTypeDef handle; } pyb_obj_adc_t; STATIC void adc_init_single(pyb_obj_adc_t *adc_obj) { if (!IS_ADC_CHANNEL(adc_obj->channel)) { return; } if (adc_obj->channel < ADC_NUM_GPIO_CHANNELS) { // Channels 0-16 correspond to real pins. Configure the GPIO pin in // ADC mode. const pin_obj_t *pin = pin_adc1[adc_obj->channel]; mp_hal_gpio_clock_enable(pin->gpio); GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.Pin = pin->pin_mask; GPIO_InitStructure.Mode = GPIO_MODE_ANALOG; GPIO_InitStructure.Pull = GPIO_NOPULL; HAL_GPIO_Init(pin->gpio, &GPIO_InitStructure); } ADCx_CLK_ENABLE(); ADC_HandleTypeDef *adcHandle = &adc_obj->handle; adcHandle->Instance = ADCx; adcHandle->Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2; adcHandle->Init.Resolution = ADC_RESOLUTION12b; adcHandle->Init.ScanConvMode = DISABLE; adcHandle->Init.ContinuousConvMode = DISABLE; adcHandle->Init.DiscontinuousConvMode = DISABLE; adcHandle->Init.NbrOfDiscConversion = 0; adcHandle->Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; adcHandle->Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1; adcHandle->Init.DataAlign = ADC_DATAALIGN_RIGHT; adcHandle->Init.NbrOfConversion = 1; adcHandle->Init.DMAContinuousRequests = DISABLE; adcHandle->Init.EOCSelection = DISABLE; HAL_ADC_Init(adcHandle); } STATIC void adc_config_channel(pyb_obj_adc_t *adc_obj) { ADC_ChannelConfTypeDef sConfig; sConfig.Channel = adc_obj->channel; sConfig.Rank = 1; sConfig.SamplingTime = ADC_SAMPLETIME_15CYCLES; sConfig.Offset = 0; HAL_ADC_ConfigChannel(&adc_obj->handle, &sConfig); } STATIC uint32_t adc_read_channel(ADC_HandleTypeDef *adcHandle) { uint32_t rawValue = 0; HAL_ADC_Start(adcHandle); if (HAL_ADC_PollForConversion(adcHandle, 10) == HAL_OK && HAL_ADC_GetState(adcHandle) == HAL_ADC_STATE_EOC_REG) { rawValue = HAL_ADC_GetValue(adcHandle); } HAL_ADC_Stop(adcHandle); return rawValue; } /******************************************************************************/ /* Micro Python bindings : adc object (single channel) */ STATIC void adc_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) { pyb_obj_adc_t *self = self_in; mp_print_str(print, "pin_name, PRINT_STR); mp_printf(print, " channel=%lu>", self->channel); } /// \classmethod \constructor(pin) /// Create an ADC object associated with the given pin. /// This allows you to then read analog values on that pin. STATIC mp_obj_t adc_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) { // check number of arguments mp_arg_check_num(n_args, n_kw, 1, 1, false); // 1st argument is the pin name mp_obj_t pin_obj = args[0]; uint32_t channel; if (MP_OBJ_IS_INT(pin_obj)) { channel = mp_obj_get_int(pin_obj); } else { const pin_obj_t *pin = pin_find(pin_obj); if ((pin->adc_num & PIN_ADC1) == 0) { // No ADC1 function on that pin nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "pin %q does not have ADC capabilities", pin->name)); } channel = pin->adc_channel; } if (!IS_ADC_CHANNEL(channel)) { nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "not a valid ADC Channel: %d", channel)); } if (pin_adc1[channel] == NULL) { nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "channel %d not available on this board", channel)); } pyb_obj_adc_t *o = m_new_obj(pyb_obj_adc_t); memset(o, 0, sizeof(*o)); o->base.type = &pyb_adc_type; o->pin_name = pin_obj; o->channel = channel; adc_init_single(o); return o; } /// \method read() /// Read the value on the analog pin and return it. The returned value /// will be between 0 and 4095. STATIC mp_obj_t adc_read(mp_obj_t self_in) { pyb_obj_adc_t *self = self_in; adc_config_channel(self); uint32_t data = adc_read_channel(&self->handle); return mp_obj_new_int(data); } STATIC MP_DEFINE_CONST_FUN_OBJ_1(adc_read_obj, adc_read); /// \method read_timed(buf, timer) /// /// Read analog values into `buf` at a rate set by the `timer` object. /// /// `buf` can be bytearray or array.array for example. The ADC values have /// 12-bit resolution and are stored directly into `buf` if its element size is /// 16 bits or greater. If `buf` has only 8-bit elements (eg a bytearray) then /// the sample resolution will be reduced to 8 bits. /// /// `timer` should be a Timer object, and a sample is read each time the timer /// triggers. The timer must already be initialised and running at the desired /// sampling frequency. /// /// To support previous behaviour of this function, `timer` can also be an /// integer which specifies the frequency (in Hz) to sample at. In this case /// Timer(6) will be automatically configured to run at the given frequency. /// /// Example using a Timer object (preferred way): /// /// adc = pyb.ADC(pyb.Pin.board.X19) # create an ADC on pin X19 /// tim = pyb.Timer(6, freq=10) # create a timer running at 10Hz /// buf = bytearray(100) # creat a buffer to store the samples /// adc.read_timed(buf, tim) # sample 100 values, taking 10s /// /// Example using an integer for the frequency: /// /// adc = pyb.ADC(pyb.Pin.board.X19) # create an ADC on pin X19 /// buf = bytearray(100) # create a buffer of 100 bytes /// adc.read_timed(buf, 10) # read analog values into buf at 10Hz /// # this will take 10 seconds to finish /// for val in buf: # loop over all values /// print(val) # print the value out /// /// This function does not allocate any memory. STATIC mp_obj_t adc_read_timed(mp_obj_t self_in, mp_obj_t buf_in, mp_obj_t freq_in) { pyb_obj_adc_t *self = self_in; mp_buffer_info_t bufinfo; mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_WRITE); size_t typesize = mp_binary_get_size('@@', bufinfo.typecode, NULL); TIM_HandleTypeDef *tim; #if defined(TIM6) if (mp_obj_is_integer(freq_in)) { // freq in Hz given so init TIM6 (legacy behaviour) tim = timer_tim6_init(mp_obj_get_int(freq_in)); HAL_TIM_Base_Start(tim); } else #endif { // use the supplied timer object as the sampling time base tim = pyb_timer_get_handle(freq_in); } // configure the ADC channel adc_config_channel(self); // This uses the timer in polling mode to do the sampling // TODO use DMA uint nelems = bufinfo.len / typesize; for (uint index = 0; index < nelems; index++) { // Wait for the timer to trigger so we sample at the correct frequency while (__HAL_TIM_GET_FLAG(tim, TIM_FLAG_UPDATE) == RESET) { } __HAL_TIM_CLEAR_FLAG(tim, TIM_FLAG_UPDATE); if (index == 0) { // for the first sample we need to turn the ADC on HAL_ADC_Start(&self->handle); } else { // for subsequent samples we can just set the "start sample" bit ADCx->CR2 |= (uint32_t)ADC_CR2_SWSTART; } // wait for sample to complete uint32_t tickstart = HAL_GetTick(); while ((ADCx->SR & ADC_FLAG_EOC) != ADC_FLAG_EOC) { #define READ_TIMED_TIMEOUT (10) // in ms if (((HAL_GetTick() - tickstart ) > READ_TIMED_TIMEOUT)) { break; // timeout } } // read value uint value = ADCx->DR; // store value in buffer if (typesize == 1) { value >>= 4; } mp_binary_set_val_array_from_int(bufinfo.typecode, bufinfo.buf, index, value); } // turn the ADC off HAL_ADC_Stop(&self->handle); #if defined(TIM6) if (mp_obj_is_integer(freq_in)) { // stop timer if we initialised TIM6 in this function (legacy behaviour) HAL_TIM_Base_Stop(tim); } #endif return mp_obj_new_int(bufinfo.len); } STATIC MP_DEFINE_CONST_FUN_OBJ_3(adc_read_timed_obj, adc_read_timed); STATIC const mp_map_elem_t adc_locals_dict_table[] = { { MP_OBJ_NEW_QSTR(MP_QSTR_read), (mp_obj_t)&adc_read_obj}, { MP_OBJ_NEW_QSTR(MP_QSTR_read_timed), (mp_obj_t)&adc_read_timed_obj}, }; STATIC MP_DEFINE_CONST_DICT(adc_locals_dict, adc_locals_dict_table); const mp_obj_type_t pyb_adc_type = { { &mp_type_type }, .name = MP_QSTR_ADC, .print = adc_print, .make_new = adc_make_new, .locals_dict = (mp_obj_t)&adc_locals_dict, }; /******************************************************************************/ /* adc all object */ typedef struct _pyb_adc_all_obj_t { mp_obj_base_t base; ADC_HandleTypeDef handle; } pyb_adc_all_obj_t; void adc_init_all(pyb_adc_all_obj_t *adc_all, uint32_t resolution) { switch (resolution) { case 6: resolution = ADC_RESOLUTION6b; break; case 8: resolution = ADC_RESOLUTION8b; break; case 10: resolution = ADC_RESOLUTION10b; break; case 12: resolution = ADC_RESOLUTION12b; break; default: nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "resolution %d not supported", resolution)); } for (uint32_t channel = 0; channel < ADC_NUM_GPIO_CHANNELS; channel++) { // Channels 0-16 correspond to real pins. Configure the GPIO pin in // ADC mode. const pin_obj_t *pin = pin_adc1[channel]; mp_hal_gpio_clock_enable(pin->gpio); GPIO_InitTypeDef GPIO_InitStructure; GPIO_InitStructure.Pin = pin->pin_mask; GPIO_InitStructure.Mode = GPIO_MODE_ANALOG; GPIO_InitStructure.Pull = GPIO_NOPULL; HAL_GPIO_Init(pin->gpio, &GPIO_InitStructure); } ADCx_CLK_ENABLE(); ADC_HandleTypeDef *adcHandle = &adc_all->handle; adcHandle->Instance = ADCx; adcHandle->Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2; adcHandle->Init.Resolution = resolution; adcHandle->Init.ScanConvMode = DISABLE; adcHandle->Init.ContinuousConvMode = DISABLE; adcHandle->Init.DiscontinuousConvMode = DISABLE; adcHandle->Init.NbrOfDiscConversion = 0; adcHandle->Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE; adcHandle->Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1; adcHandle->Init.DataAlign = ADC_DATAALIGN_RIGHT; adcHandle->Init.NbrOfConversion = 1; adcHandle->Init.DMAContinuousRequests = DISABLE; adcHandle->Init.EOCSelection = DISABLE; HAL_ADC_Init(adcHandle); } uint32_t adc_config_and_read_channel(ADC_HandleTypeDef *adcHandle, uint32_t channel) { ADC_ChannelConfTypeDef sConfig; sConfig.Channel = channel; sConfig.Rank = 1; sConfig.SamplingTime = ADC_SAMPLETIME_15CYCLES; sConfig.Offset = 0; HAL_ADC_ConfigChannel(adcHandle, &sConfig); return adc_read_channel(adcHandle); } int adc_get_resolution(ADC_HandleTypeDef *adcHandle) { uint32_t res_reg = __HAL_ADC_GET_RESOLUTION(adcHandle); switch (res_reg) { case ADC_RESOLUTION6b: return 6; case ADC_RESOLUTION8b: return 8; case ADC_RESOLUTION10b: return 10; } return 12; } int adc_read_core_temp(ADC_HandleTypeDef *adcHandle) { int32_t raw_value = adc_config_and_read_channel(adcHandle, ADC_CHANNEL_TEMPSENSOR); // Note: constants assume 12-bit resolution, so we scale the raw value to // be 12-bits. raw_value <<= (12 - adc_get_resolution(adcHandle)); return ((raw_value - CORE_TEMP_V25) / CORE_TEMP_AVG_SLOPE) + 25; } #if MICROPY_PY_BUILTINS_FLOAT float adc_read_core_vbat(ADC_HandleTypeDef *adcHandle) { uint32_t raw_value = adc_config_and_read_channel(adcHandle, ADC_CHANNEL_VBAT); // Note: constants assume 12-bit resolution, so we scale the raw value to // be 12-bits. raw_value <<= (12 - adc_get_resolution(adcHandle)); // multiplier is 3.3/4095 return raw_value * VBAT_DIV * 0.8058608058608059e-3f; } float adc_read_core_vref(ADC_HandleTypeDef *adcHandle) { uint32_t raw_value = adc_config_and_read_channel(adcHandle, ADC_CHANNEL_VREFINT); // Note: constants assume 12-bit resolution, so we scale the raw value to // be 12-bits. raw_value <<= (12 - adc_get_resolution(adcHandle)); // multiplier is 3.3/4095 return raw_value * 0.8058608058608059e-3f; } #endif /******************************************************************************/ /* Micro Python bindings : adc_all object */ STATIC mp_obj_t adc_all_make_new(mp_obj_t type_in, mp_uint_t n_args, mp_uint_t n_kw, const mp_obj_t *args) { // check number of arguments mp_arg_check_num(n_args, n_kw, 1, 1, false); // make ADCAll object pyb_adc_all_obj_t *o = m_new_obj(pyb_adc_all_obj_t); o->base.type = &pyb_adc_all_type; adc_init_all(o, mp_obj_get_int(args[0])); // args[0] is the resolution return o; } STATIC mp_obj_t adc_all_read_channel(mp_obj_t self_in, mp_obj_t channel) { pyb_adc_all_obj_t *self = self_in; uint32_t chan = mp_obj_get_int(channel); uint32_t data = adc_config_and_read_channel(&self->handle, chan); return mp_obj_new_int(data); } STATIC MP_DEFINE_CONST_FUN_OBJ_2(adc_all_read_channel_obj, adc_all_read_channel); STATIC mp_obj_t adc_all_read_core_temp(mp_obj_t self_in) { pyb_adc_all_obj_t *self = self_in; int data = adc_read_core_temp(&self->handle); return mp_obj_new_int(data); } STATIC MP_DEFINE_CONST_FUN_OBJ_1(adc_all_read_core_temp_obj, adc_all_read_core_temp); #if MICROPY_PY_BUILTINS_FLOAT STATIC mp_obj_t adc_all_read_core_vbat(mp_obj_t self_in) { pyb_adc_all_obj_t *self = self_in; float data = adc_read_core_vbat(&self->handle); return mp_obj_new_float(data); } STATIC MP_DEFINE_CONST_FUN_OBJ_1(adc_all_read_core_vbat_obj, adc_all_read_core_vbat); STATIC mp_obj_t adc_all_read_core_vref(mp_obj_t self_in) { pyb_adc_all_obj_t *self = self_in; float data = adc_read_core_vref(&self->handle); return mp_obj_new_float(data); } STATIC MP_DEFINE_CONST_FUN_OBJ_1(adc_all_read_core_vref_obj, adc_all_read_core_vref); #endif STATIC const mp_map_elem_t adc_all_locals_dict_table[] = { { MP_OBJ_NEW_QSTR(MP_QSTR_read_channel), (mp_obj_t)&adc_all_read_channel_obj}, { MP_OBJ_NEW_QSTR(MP_QSTR_read_core_temp), (mp_obj_t)&adc_all_read_core_temp_obj}, #if MICROPY_PY_BUILTINS_FLOAT { MP_OBJ_NEW_QSTR(MP_QSTR_read_core_vbat), (mp_obj_t)&adc_all_read_core_vbat_obj}, { MP_OBJ_NEW_QSTR(MP_QSTR_read_core_vref), (mp_obj_t)&adc_all_read_core_vref_obj}, #endif }; STATIC MP_DEFINE_CONST_DICT(adc_all_locals_dict, adc_all_locals_dict_table); const mp_obj_type_t pyb_adc_all_type = { { &mp_type_type }, .name = MP_QSTR_ADCAll, .make_new = adc_all_make_new, .locals_dict = (mp_obj_t)&adc_all_locals_dict, }; @ 1.1 log @Initial revision @ text @@ 1.1.1.1 log @Import micropython version 1.5.2 into othersrc. Micropython is a python3 implementation that has been optimised for micro-controllers and small embedded systems. It also has a "unix" port. It has an MIT license. This is version 1.5.2 of micropython. MicroPython implements the entire Python 3.4 syntax (including exceptions, "with", "yield from", etc.). The following core datatypes are provided: str (including basic Unicode support), bytes, bytearray, tuple, list, dict, set, frozenset, array.array, collections.namedtuple, classes and instances. Builtin modules include sys, time, and struct. Note that only subset of Python 3.4 functionality implemented for the data types and modules. This is the standard micropython source (version v1.5.2), which has been adapted to use reachover infrastructure. At the present time, libffi (from pkgsrc) is used. Alternative locations for libffi can be set using the PKGSRC_PREFIX definition to make. In the whole scheme of things, micropython is quite small: % size bin/micropython text data bss dec hex filename 393495 1624 2208 397327 6100f bin/micropython % and runs much as expected: % bin/micropython MicroPython v1.5.2 on 2016-01-13; linux version Use Ctrl-D to exit, Ctrl-E for paste mode >>> print("hello world") hello world >>> list(5 * x + y for x in range(10) for y in [4, 2, 1]) [4, 2, 1, 9, 7, 6, 14, 12, 11, 19, 17, 16, 24, 22, 21, 29, 27, 26, 34, 32, 31, 39, 37, 36, 44, 42, 41, 49, 47, 46] >>> % python2.7 Python 2.7.10 (default, Oct 17 2015, 17:55:29) [GCC 4.8.5] on netbsd7 Type "help", "copyright", "credits" or "license" for more information. >>> print("hello world") hello world >>> list(5 * x + y for x in range(10) for y in [4, 2, 1]) [4, 2, 1, 9, 7, 6, 14, 12, 11, 19, 17, 16, 24, 22, 21, 29, 27, 26, 34, 32, 31, 39, 37, 36, 44, 42, 41, 49, 47, 46] >>> ^D % This (reachover) version runs all the tests which the gmake version does. % make t cd bin && make t cd /home/agc/local/micropython/bin/../dist/unix/../tests && env MICROPY_MICROPYTHON=/home/agc/local/micropython/bin/micropython ./run-tests pass basics/0prelim.py pass basics/andor.py pass basics/array1.py pass basics/array_add.py pass basics/array_construct.py pass basics/array_construct2.py ... pass unix/ffi_callback.py pass unix/ffi_float.py pass unix/ffi_float2.py 474 tests performed (15812 individual testcases) 474 tests passed 5 tests skipped: cmd_showbc cmd_verbose machine1 machine_mem extra_coverage % The sources are available from github: https://github.com/micropython/micropython micropython release at: https://github.com/micropython/micropython/releases Sources for 1.5.2 taken from: https://github.com/micropython/micropython/archive/v1.5.2.tar.gz Alistair Crooks agc@@netbsd.org Wed Jan 13 17:15:30 PST 2016 @ text @@