c4db8b87e2
Restructures the STM port of Circuitpython to be more generic about the STM32 chip lines to support the F7 and H7 series of chips. Adds the new Packages directory to organize different chip layouts between lines. Makes general changes to the Makefile to condense board-level flags to the minimum and support the new chip series. Adds the new chip line to the Peripherals directory, along with new python tools used to generate peripheral text automatically in the tools/ directory.
140 lines
4.8 KiB
C
140 lines
4.8 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) 2019 Lucian Copeland for Adafruit Industries
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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 <math.h>
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#include "common-hal/microcontroller/Processor.h"
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#include "py/runtime.h"
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#include "supervisor/shared/translate.h"
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#if defined(STM32F4)
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#define STM32_UUID ((uint32_t *)0x1FFF7A10)
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//Factory calibration locations
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#define ADC_CAL_ADDRESS (0x1fff7a2a)
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#define ADC_CAL1 ((uint16_t*)(ADC_CAL_ADDRESS + 2))
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#define ADC_CAL2 ((uint16_t*)(ADC_CAL_ADDRESS + 4))
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#define VREFIN_CAL ((uint16_t *)ADC_CAL_ADDRESS)
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// correction factor for reference value
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STATIC volatile float adc_refcor = 1.0f;
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STATIC void set_adc_params(ADC_HandleTypeDef *AdcHandle) {
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AdcHandle->Instance = ADC1;
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AdcHandle->Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
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AdcHandle->Init.Resolution = ADC_RESOLUTION_12B;
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AdcHandle->Init.ScanConvMode = DISABLE;
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AdcHandle->Init.ContinuousConvMode = DISABLE;
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AdcHandle->Init.DiscontinuousConvMode = DISABLE;
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AdcHandle->Init.NbrOfDiscConversion = 0;
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AdcHandle->Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
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AdcHandle->Init.ExternalTrigConv = ADC_SOFTWARE_START;
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AdcHandle->Init.DataAlign = ADC_DATAALIGN_RIGHT;
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AdcHandle->Init.NbrOfConversion = 1;
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AdcHandle->Init.DMAContinuousRequests = DISABLE;
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AdcHandle->Init.EOCSelection = ADC_EOC_SINGLE_CONV;
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}
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#endif
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float common_hal_mcu_processor_get_temperature(void) {
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#if defined(STM32F4)
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__HAL_RCC_ADC1_CLK_ENABLE();
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//HAL Implementation
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ADC_HandleTypeDef AdcHandle;
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ADC_ChannelConfTypeDef sConfig;
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set_adc_params(&AdcHandle);
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HAL_ADC_Init(&AdcHandle);
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ADC->CCR |= ADC_CCR_TSVREFE;
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ADC->CCR &= ~ADC_CCR_VBATE; // If this somehow got turned on, it'll return bad values.
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sConfig.Channel = ADC_CHANNEL_TEMPSENSOR; //either 16 or 18, depending on chip
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sConfig.Rank = 1;
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sConfig.SamplingTime = ADC_SAMPLETIME_480CYCLES; // Temp sensor likes 10us minimum
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HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);
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HAL_ADC_Start(&AdcHandle);
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if (HAL_ADC_PollForConversion(&AdcHandle,1) != HAL_OK) {
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mp_raise_RuntimeError(translate("Temperature read timed out"));
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}
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uint32_t value = (uint32_t)HAL_ADC_GetValue(&AdcHandle);
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HAL_ADC_Stop(&AdcHandle);
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//There's no F4 specific appnote for this but it works the same as the L1 in AN3964
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float core_temp_avg_slope = (*ADC_CAL2 - *ADC_CAL1) / 80.0;
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return (((float)value * adc_refcor - *ADC_CAL1) / core_temp_avg_slope) + 30.0f;
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#else
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return false;
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#endif
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}
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float common_hal_mcu_processor_get_voltage(void) {
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#if defined(STM32F4)
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__HAL_RCC_ADC1_CLK_ENABLE();
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//HAL Implementation
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ADC_HandleTypeDef AdcHandle;
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ADC_ChannelConfTypeDef sConfig;
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set_adc_params(&AdcHandle);
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HAL_ADC_Init(&AdcHandle);
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ADC->CCR |= ADC_CCR_TSVREFE;
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sConfig.Channel = ADC_CHANNEL_VREFINT;
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sConfig.Rank = 1;
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sConfig.SamplingTime = ADC_SAMPLETIME_480CYCLES;
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HAL_ADC_ConfigChannel(&AdcHandle, &sConfig);
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HAL_ADC_Start(&AdcHandle);
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if (HAL_ADC_PollForConversion(&AdcHandle,1) != HAL_OK) {
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mp_raise_RuntimeError(translate("Voltage read timed out"));
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}
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uint32_t value = (uint32_t)HAL_ADC_GetValue(&AdcHandle);
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HAL_ADC_Stop(&AdcHandle);
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//This value could be used to actively correct ADC values.
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adc_refcor = ((float)(*VREFIN_CAL)) / ((float)value);
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return adc_refcor * 3.3f;
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#else
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return false;
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#endif
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}
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uint32_t common_hal_mcu_processor_get_frequency(void) {
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return SystemCoreClock;
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}
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void common_hal_mcu_processor_get_uid(uint8_t raw_id[]) {
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#if defined(STM32F4)
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for (int i=0; i<3; i++) {
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((uint32_t*) raw_id)[i] = STM32_UUID[i];
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}
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#endif
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}
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