115 lines
4.3 KiB
C
115 lines
4.3 KiB
C
/*
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* This file is part of the Micro Python 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) 2020 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 "stm32f4xx_hal.h"
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#include "supervisor/shared/safe_mode.h"
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#include <stdbool.h>
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// F4 Series
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#ifdef STM32F401xE
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#include "stm32f4/stm32f401xe/clocks.h"
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#endif
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#ifdef STM32F411xE
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#include "stm32f4/stm32f411xe/clocks.h"
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#endif
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#ifdef STM32F412Cx
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#include "stm32f4/stm32f412cx/clocks.h"
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#endif
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#ifdef STM32F412Zx
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#include "stm32f4/stm32f412zx/clocks.h"
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#endif
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#ifdef STM32F405xx
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#include "stm32f4/stm32f405xx/clocks.h"
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#endif
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#ifdef STM32F407xx
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#include "stm32f4/stm32f407xx/clocks.h"
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#endif
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void stm32_peripherals_clocks_init(void) {
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
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// Set voltage scaling in accordance with system clock speed
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__HAL_RCC_PWR_CLK_ENABLE();
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__HAL_PWR_VOLTAGESCALING_CONFIG(CPY_CLK_VSCALE);
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// Set up primary PLL and HSE clocks
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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#if (BOARD_HAS_LOW_SPEED_CRYSTAL)
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RCC_OscInitStruct.OscillatorType |= RCC_OSCILLATORTYPE_LSE;
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RCC_OscInitStruct.LSEState = RCC_LSE_ON;
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#else
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RCC_OscInitStruct.OscillatorType |= RCC_OSCILLATORTYPE_LSI;
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RCC_OscInitStruct.LSIState = RCC_LSI_ON;
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#endif
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RCC_OscInitStruct.HSEState = BOARD_HSE_SOURCE;
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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 = HSE_VALUE / 1000000;
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RCC_OscInitStruct.PLL.PLLN = CPY_CLK_PLLN;
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RCC_OscInitStruct.PLL.PLLP = CPY_CLK_PLLP;
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RCC_OscInitStruct.PLL.PLLQ = CPY_CLK_PLLQ;
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#if (CPY_CLK_USB_USES_AUDIOPLL)
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RCC_OscInitStruct.PLL.PLLR = 2; // Unused but required by HAL
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#endif
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
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// Clock issues are too problematic to even attempt recovery.
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// If you end up here, check whether your LSE settings match your board.
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while (1) {
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;
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}
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}
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// Configure bus clock sources and divisors
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = CPY_CLK_AHBDIV;
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RCC_ClkInitStruct.APB1CLKDivider = CPY_CLK_APB1DIV;
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RCC_ClkInitStruct.APB2CLKDivider = CPY_CLK_APB2DIV;
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HAL_RCC_ClockConfig(&RCC_ClkInitStruct, CPY_CLK_FLASH_LATENCY);
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// Set up non-bus peripherals
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// TODO: I2S settings go here
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PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC;
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#if (BOARD_HAS_LOW_SPEED_CRYSTAL)
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PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSE;
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#else
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PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI;
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#endif
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#if (CPY_CLK_USB_USES_AUDIOPLL)
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// Not supported by all lines. Should always result in 48M.
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PeriphClkInitStruct.PLLI2S.PLLI2SM = HSE_VALUE / 1000000;
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PeriphClkInitStruct.PLLI2S.PLLI2SQ = 4;
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PeriphClkInitStruct.PLLI2S.PLLI2SN = 192;
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PeriphClkInitStruct.PeriphClockSelection |= RCC_PERIPHCLK_CK48;
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PeriphClkInitStruct.Clk48ClockSelection = RCC_CK48CLKSOURCE_PLLI2SQ;
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#endif
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HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
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}
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