/** ****************************************************************** * @file main.c * @author fire * @version V1.0 * @date 2019-xx-xx * @brief TIM-����ʱ��������� ****************************************************************** * @attention * * ʵ��ƽ̨:Ұ�� STM32H750������ * ��̳ :http://www.firebbs.cn * �Ա� :http://firestm32.taobao.com * ****************************************************************** */ #include "stm32h7xx.h" #include "main.h" #include "./usart/bsp_debug_usart.h" #include "./tim/bsp_advance_tim.h" #include "./led/bsp_led.h" #include "./key/bsp_key.h" extern __IO uint16_t ChannelPulse; extern TIM_HandleTypeDef TIM_Handle; /** * @brief ������ * @param �� * @retval �� */ int main(void) { /* ϵͳʱ�ӳ�ʼ����480MHz */ SystemClock_Config(); /* Ĭ�ϲ����� MPU������Ҫ�������ܣ������� MPU ��ʹ�� DMA ʱ��ע�� Cache �� �ڴ�����һ���Ե����⣬ ����ע��������ο����̵̳� MPU ��������½� */ // Board_MPU_Config(0, MPU_Normal_WT, 0xD0000000, MPU_32MB); // Board_MPU_Config(1, MPU_Normal_WT, 0x24000000, MPU_512KB); SCB_EnableICache(); // ʹ��ָ�� Cache // SCB_EnableDCache(); // ʹ������ Cache /* ��ʼ������GPIO */ Key_GPIO_Config(); /* ��ʼ��������ʱ����ʱ��1s����һ���ж� */ TIM_Advance_Init(); while(1) { /* ɨ��KEY1 */ if( Key_Scan(KEY1_GPIO_PORT,KEY1_PIN) == KEY_ON ) { /* ����ռ�ձ� */ if(ChannelPulse<10000) ChannelPulse+=1000; else ChannelPulse=10000; __HAL_TIM_SetCompare(&TIM_Handle,TIM_CHANNEL_1,ChannelPulse); } /* ɨ��KEY2 */ if( Key_Scan(KEY2_GPIO_PORT,KEY2_PIN) == KEY_ON ) { /* ��Сռ�ձ� */ if(ChannelPulse>=1000) ChannelPulse-=1000; else ChannelPulse=0; __HAL_TIM_SetCompare(&TIM_Handle,TIM_CHANNEL_1,ChannelPulse); } } } /** * @brief System Clock ���� * system Clock ��������: * System Clock source = PLL (HSE) * SYSCLK(Hz) = 480000000 (CPU Clock) * HCLK(Hz) = 240000000 (AXI and AHBs Clock) * AHB Prescaler = 2 * D1 APB3 Prescaler = 2 (APB3 Clock 120MHz) * D2 APB1 Prescaler = 2 (APB1 Clock 120MHz) * D2 APB2 Prescaler = 2 (APB2 Clock 120MHz) * D3 APB4 Prescaler = 2 (APB4 Clock 120MHz) * HSE Frequency(Hz) = 25000000 * PLL_M = 5 * PLL_N = 192 * PLL_P = 2 * PLL_Q = 4 * PLL_R = 2 * VDD(V) = 3.3 * Flash Latency(WS) = 4 * @param None * @retval None */ /** * @brief System Clock Configuration * @retval None */ void SystemClock_Config(void) { RCC_OscInitTypeDef RCC_OscInitStruct = {0}; RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; /** ���õ�Դ���ø��� */ HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY); /** ����������ѹ�������ѹ */ __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE0); while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {} /** ��ʼ��CPU��AHB��APB����ʱ�� */ RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; RCC_OscInitStruct.HSEState = RCC_HSE_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; RCC_OscInitStruct.PLL.PLLM = 5; RCC_OscInitStruct.PLL.PLLN = 192; RCC_OscInitStruct.PLL.PLLP = 2; RCC_OscInitStruct.PLL.PLLQ = 2; RCC_OscInitStruct.PLL.PLLR = 2; RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2; RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE; RCC_OscInitStruct.PLL.PLLFRACN = 0; if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) { while(1); } /** ��ʼ��CPU��AHB��APB����ʱ�� */ RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2 |RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1; RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1; RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2; RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2; RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2; RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2; RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2; if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK) { while(1); } } /****************************END OF FILE***************************/