140 lines
4.9 KiB
C
140 lines
4.9 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020, 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 G474 Nucleo
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url: https://www.st.com/en/evaluation-tools/nucleo-g474re.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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#endif
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// G474RE Nucleo does not has usb connection. We need to manually connect
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// - PA12 for D+, CN10.12
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// - PA11 for D-, CN10.14
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// LED
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#define LED_PORT GPIOA
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#define LED_PIN GPIO_PIN_5
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#define LED_STATE_ON 0
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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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// UART Enable for STLink VCOM
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#define UART_DEV LPUART1
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#define UART_CLK_EN __HAL_RCC_LPUART1_CLK_ENABLE
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#define UART_GPIO_PORT GPIOA
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#define UART_GPIO_AF GPIO_AF12_LPUART1
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#define UART_TX_PIN GPIO_PIN_2
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#define UART_RX_PIN GPIO_PIN_3
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//--------------------------------------------------------------------+
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// RCC Clock
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//--------------------------------------------------------------------+
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static inline void board_clock_init(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
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// Configure the main internal regulator output voltage
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HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1_BOOST);
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// Initializes the CPU, AHB and APB buses clocks
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48 | RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
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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.PLLM = RCC_PLLM_DIV4;
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RCC_OscInitStruct.PLL.PLLN = 50;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
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RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
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HAL_RCC_OscConfig(&RCC_OscInitStruct);
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// Initializes the CPU, AHB and APB buses clocks
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
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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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HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_8);
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PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USB;
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PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_HSI48;
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HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) ;
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#if 0 // TODO need to check if USB clock is enabled
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/* Enable HSI48 */
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memset(&RCC_OscInitStruct, 0, sizeof(RCC_OscInitStruct));
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48;
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RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
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HAL_RCC_OscConfig(&RCC_OscInitStruct);
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/*Enable CRS Clock*/
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RCC_CRSInitTypeDef RCC_CRSInitStruct= {0};
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__HAL_RCC_CRS_CLK_ENABLE();
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/* Default Synchro Signal division factor (not divided) */
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RCC_CRSInitStruct.Prescaler = RCC_CRS_SYNC_DIV1;
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/* Set the SYNCSRC[1:0] bits according to CRS_Source value */
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RCC_CRSInitStruct.Source = RCC_CRS_SYNC_SOURCE_USB;
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/* HSI48 is synchronized with USB SOF at 1KHz rate */
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RCC_CRSInitStruct.ReloadValue = __HAL_RCC_CRS_RELOADVALUE_CALCULATE(48000000, 1000);
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RCC_CRSInitStruct.ErrorLimitValue = RCC_CRS_ERRORLIMIT_DEFAULT;
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/* Set the TRIM[5:0] to the default value */
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RCC_CRSInitStruct.HSI48CalibrationValue = RCC_CRS_HSI48CALIBRATION_DEFAULT;
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/* Start automatic synchronization */
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HAL_RCCEx_CRSConfig(&RCC_CRSInitStruct);
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#endif
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}
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static inline void board_vbus_sense_init(void)
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{
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// Enable VBUS sense (B device) via pin PA9
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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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