107 lines
2.5 KiB
C
107 lines
2.5 KiB
C
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/**
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******************************************************************************
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* @file : main.c
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* @brief : Main program body
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******************************************************************************
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* @attention
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*
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* Copyright (c) 2023 STMicroelectronics.
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* All rights reserved.
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*
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* This software is licensed under terms that can be found in the LICENSE file
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* in the root directory of this software component.
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* If no LICENSE file comes with this software, it is provided AS-IS.
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*
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******************************************************************************
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*/
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#include "main.h"
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static void Init(void);
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/**
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* @brief The application entry point.
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* @retval int
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*/
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int boot(void) {
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_SYSCFG);
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LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
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Init();
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LL_GPIO_ResetOutputPin(GPIOA, LL_GPIO_PIN_3);
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LL_mDelay(100);
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LL_GPIO_SetOutputPin(GPIOA, LL_GPIO_PIN_3);
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/* Infinite loop */
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while (1) {
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}
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}
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static void Init(void) {
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LL_FLASH_SetLatency(LL_FLASH_LATENCY_1);
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while (LL_FLASH_GetLatency() != LL_FLASH_LATENCY_1) {
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}
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LL_RCC_HSI_Enable();
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/* Wait till HSI is ready */
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while (LL_RCC_HSI_IsReady() != 1) {
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}
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LL_RCC_HSI_SetCalibTrimming(16);
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LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSI_DIV_2, LL_RCC_PLL_MUL_12);
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LL_RCC_PLL_Enable();
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/* Wait till PLL is ready */
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while (LL_RCC_PLL_IsReady() != 1) {
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}
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LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
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LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
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LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
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/* Wait till System clock is ready */
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while (LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL) {
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}
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LL_Init1msTick(48000000);
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LL_SetSystemCoreClock(48000000);
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LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
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/* GPIO Ports Clock Enable */
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LL_AHB1_GRP1_EnableClock(LL_AHB1_GRP1_PERIPH_GPIOA);
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/**/
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LL_GPIO_ResetOutputPin(GPIOA, LL_GPIO_PIN_3);
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/**/
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GPIO_InitStruct.Pin = LL_GPIO_PIN_3;
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GPIO_InitStruct.Mode = LL_GPIO_MODE_OUTPUT;
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GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_LOW;
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GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
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LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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}
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void Error_Handler(void) {
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/* User can add his own implementation to report the HAL error return state */
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__disable_irq();
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while (1) {
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}
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}
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