255 lines
8.3 KiB
C
255 lines
8.3 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2023, Ha Thach (tinyusb.org)
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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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* This file is part of the TinyUSB stack.
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*/
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/* metadata:
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name: STM32 U5a5 Nucleo
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url: https://www.st.com/en/evaluation-tools/nucleo-u5a5zj-q.html
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*/
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#ifndef BOARD_H_
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#define BOARD_H_
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include "stm32u5xx_ll_tim.h"
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// LED GREEN
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#define LED_PORT GPIOC
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#define LED_PIN GPIO_PIN_7
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#define LED_STATE_ON 1
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// BUTTON
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#define BUTTON_PORT GPIOC
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#define BUTTON_PIN GPIO_PIN_13
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#define BUTTON_STATE_ACTIVE 1
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// UCPD DBn
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#define UCPD_DBn_PORT GPIOB
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#define UCPD_DBn_PIN GPIO_PIN_5
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// UART Enable for STLink VCOM
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#define UART_ID 1
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#define UART_GPIO_PORT GPIOA
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#define UART_GPIO_AF GPIO_AF7_USART1
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#define UART_TX_PIN GPIO_PIN_9
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#define UART_RX_PIN GPIO_PIN_10
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#define VBUS_SENSE_EN 0
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//--------------------------------------------------------------------+
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// RCC Clock
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//--------------------------------------------------------------------+
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static inline void SystemClock_Config(void) {
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RCC_OscInitTypeDef RCC_OscInitStruct = { 0 };
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RCC_ClkInitTypeDef RCC_ClkInitStruct = { 0 };
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__HAL_RCC_PWR_CLK_ENABLE();
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HAL_PWREx_EnableVddA();
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/** Configure the main internal regulator output voltage
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*/
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if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK) {
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Error_Handler();
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}
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/** Initializes the CPU, AHB and APB buses clocks
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*/
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.HSIState = RCC_HSI_ON;
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RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLMBOOST = RCC_PLLMBOOST_DIV1;
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RCC_OscInitStruct.PLL.PLLM = 1;
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RCC_OscInitStruct.PLL.PLLN = 20;
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RCC_OscInitStruct.PLL.PLLP = 8;
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RCC_OscInitStruct.PLL.PLLQ = 2;
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RCC_OscInitStruct.PLL.PLLR = 2;
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RCC_OscInitStruct.PLL.PLLRGE = RCC_PLLVCIRANGE_1;
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RCC_OscInitStruct.PLL.PLLFRACN = 0;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
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Error_Handler();
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}
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/** Initializes the CPU, AHB and APB buses clocks
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*/
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK
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| RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2
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| RCC_CLOCKTYPE_PCLK3;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
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RCC_ClkInitStruct.APB3CLKDivider = RCC_HCLK_DIV1;
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HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4);
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// USB Clock
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__HAL_RCC_SYSCFG_CLK_ENABLE();
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RCC_PeriphCLKInitTypeDef usb_clk_init = { 0};
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usb_clk_init.PeriphClockSelection = RCC_PERIPHCLK_USBPHY;
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usb_clk_init.UsbPhyClockSelection = RCC_USBPHYCLKSOURCE_HSE;
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if (HAL_RCCEx_PeriphCLKConfig(&usb_clk_init) != HAL_OK) {
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Error_Handler();
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}
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/** Set the OTG PHY reference clock selection
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*/
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HAL_SYSCFG_SetOTGPHYReferenceClockSelection(SYSCFG_OTG_HS_PHY_CLK_SELECT_1);
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// USART clock
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RCC_PeriphCLKInitTypeDef uart_clk_init = { 0};
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uart_clk_init.PeriphClockSelection = RCC_PERIPHCLK_USART1;
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uart_clk_init.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
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if (HAL_RCCEx_PeriphCLKConfig(&uart_clk_init) != HAL_OK) {
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Error_Handler();
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}
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}
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static inline void SystemPower_Config(void) {
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HAL_PWREx_EnableVddIO2();
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/*
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* Switch to SMPS regulator instead of LDO
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*/
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if (HAL_PWREx_ConfigSupply(PWR_SMPS_SUPPLY) != HAL_OK) {
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Error_Handler();
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}
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/* USER CODE BEGIN PWR */
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/* USER CODE END PWR */
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}
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static inline void board_vbus_sense_init(void) {
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/* ADC config */
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GPIO_InitTypeDef GPIO_InitStruct = {0};
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RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
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PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADCDAC;
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PeriphClkInit.AdcDacClockSelection = RCC_ADCDACCLKSOURCE_HSE;
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if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
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{
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Error_Handler();
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}
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__HAL_RCC_ADC12_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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GPIO_InitStruct.Pin = GPIO_PIN_2;
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GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
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GPIO_InitStruct.Pull = GPIO_NOPULL;
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HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
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ADC_HandleTypeDef hadc1;
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hadc1.Instance = ADC1;
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hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
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hadc1.Init.Resolution = ADC_RESOLUTION_14B;
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hadc1.Init.GainCompensation = 0;
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hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
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hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
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hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
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hadc1.Init.LowPowerAutoWait = DISABLE;
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hadc1.Init.ContinuousConvMode = DISABLE;
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hadc1.Init.NbrOfConversion = 1;
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hadc1.Init.DiscontinuousConvMode = DISABLE;
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hadc1.Init.ExternalTrigConv = ADC_EXTERNALTRIG_T1_TRGO;
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hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_RISING;
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hadc1.Init.DMAContinuousRequests = DISABLE;
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hadc1.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_HIGH;
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hadc1.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
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hadc1.Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
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hadc1.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DR;
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hadc1.Init.OversamplingMode = DISABLE;
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if (HAL_ADC_Init(&hadc1) != HAL_OK) {
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Error_Handler();
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}
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ADC_ChannelConfTypeDef sConfig = {0};
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sConfig.Channel = ADC_CHANNEL_3;
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sConfig.Rank = ADC_REGULAR_RANK_1;
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sConfig.SamplingTime = ADC_SAMPLETIME_68CYCLES;
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sConfig.SingleDiff = ADC_SINGLE_ENDED;
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sConfig.OffsetNumber = ADC_OFFSET_NONE;
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sConfig.Offset = 0;
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if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) {
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Error_Handler();
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}
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HAL_NVIC_EnableIRQ(ADC1_2_IRQn);
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/* TIM1 init for TRGO */
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__HAL_RCC_TIM1_CLK_ENABLE();
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TIM_HandleTypeDef htim1;
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TIM_ClockConfigTypeDef sClockSourceConfig = {0};
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htim1.Instance = TIM1;
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htim1.Init.Prescaler = 159;
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htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
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htim1.Init.Period = 999;
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htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
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htim1.Init.RepetitionCounter = 0;
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htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
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if (HAL_TIM_Base_Init(&htim1) != HAL_OK) {
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Error_Handler();
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}
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sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
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if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK) {
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Error_Handler();
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}
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LL_TIM_SetTriggerOutput(htim1.Instance, LL_TIM_TRGO_UPDATE);
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HAL_ADCEx_Calibration_Start(&hadc1, ADC_CALIB_OFFSET, ADC_SINGLE_ENDED);
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HAL_ADC_Start_IT(&hadc1);
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HAL_TIM_Base_Start(&htim1);
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}
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void ADC1_2_IRQHandler(void) {
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if(LL_ADC_IsActiveFlag_EOC(ADC1) != 0) {
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/* Clear flag ADC group regular end of unitary conversion */
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LL_ADC_ClearFlag_EOC(ADC1);
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/* ADC code = 4.5V * R2 / (R1 + R2) * (2^14) / 3.3V
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* with R1 = 330kOhm and R2 = 50kOhm
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*/
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const uint32_t threshold = 4500 * 50 / (50 + 330) * 16384 / 3300;
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if((ADC1->DR > threshold) && (USB_OTG_HS->GOTGCTL & USB_OTG_GOTGCTL_BVALOEN)) {
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USB_OTG_HS->GOTGCTL |= USB_OTG_GOTGCTL_BVALOVAL;
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USB_OTG_HS->GCCFG |= USB_OTG_GCCFG_VBVALOVAL;
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} else {
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USB_OTG_HS->GOTGCTL &= ~USB_OTG_GOTGCTL_BVALOVAL;
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USB_OTG_HS->GCCFG &= ~USB_OTG_GCCFG_VBVALOVAL;
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}
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}
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if(LL_ADC_IsActiveFlag_OVR(ADC1) != 0) {
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/* Clear flag ADC group regular overrun */
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LL_ADC_ClearFlag_OVR(ADC1);
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}
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* BOARD_H_ */
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