日韩福利在线,日韩国产一区二区,久久久网

//頭文件
#include "stm32f10x.h"
#include "GPIOLIKE51.h"
#include "stm32f10x_dma.h"
#include "stm32f10x_tim.h"
#define BUFFER_SIZE 10
int j,z;
int iii,jjj;
uint32_t pwm_buffer[BUFFER_SIZE] = {0, 10, 20, 30, 40, 50, 60, 70, 80, 90};
//函數聲明
void GPIO_Configuration(void);
void xintiao(void);
//=============================================================================
//文件名稱：Delay
//功能概要：延時
//參數說明：nCount：延時長短
//函數返回：無
//=============================================================================
void TIM3_PWM_Configuration(unsigned int freq, uint8_t duty_cycle);
void DMA_Configuration(uint32_t pwmBuffer1);
void SendData(void);
void Delay(uint32_t nCount)
{
for(; nCount != 0; nCount--);
}
//=============================================================================
//文件名稱：main
//功能概要：主函數
//參數說明：無
//函數返回：int
//=============================================================================
int main(void)
{
GPIO_Configuration();
// 配置TIM2通道2為PWM模式，頻率為800kHz
TIM3_PWM_Configuration(800000, 50);
DMA_Configuration(*pwm_buffer);
while (1)
{
;
}
}
//=============================================================================
//文件名稱：GPIO_Configuration
//功能概要：GPIO初始化
//參數說明：無
//函數返回：無
//=============================================================================
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOC , ENABLE);
//=============================================================================
//LED -> PC13
//=============================================================================
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
void TIM3_PWM_Configuration(unsigned int freq, uint8_t duty_cycle)
{
// 配置TIM3生成PWM信號
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
// 使能TIM3時鐘
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); //使能GPIO外設和AFIO復用功能模塊時鐘
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
// 計數器模式設置為向上計數模式
TIM_TimeBaseStructure.TIM_Period = (72000000 / freq) - 1; // 設置自動重裝載值
TIM_TimeBaseStructure.TIM_Prescaler = 0; // 不分頻
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
// PWM模式3配置: PWM信號在下一個更新事件后有效
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse = (duty_cycle * (72000000 / freq)) / 100; // 根據占空比計算脈沖寬度
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC3Init(TIM3, &TIM_OCInitStructure);
// // 使能TIM3主輸出
TIM_Cmd(TIM3, ENABLE);
}
void DMA_Configuration(uint32_t pwmBuffer1)
{
DMA_InitTypeDef DMA_InitStructure;
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
DMA_DeInit(DMA1_Channel2);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&TIM3->CCR3;//外設的基地址（寄存器的地址）
DMA_InitStructure.DMA_MemoryBaseAddr = pwmBuffer1; //內存的基地址（可以是代碼中定義的數組的地址）
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;//DMA的數據傳輸方向
DMA_InitStructure.DMA_BufferSize = BUFFER_SIZE;//外設（內部的FLASH）地址遞增
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;// 內存地址遞增
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;// 外設數據單位
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;// 內存數據單位
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;//DMA模式，一次或者循環模式
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel2, &DMA_InitStructure);
DMA_ITConfig(DMA1_Channel2, DMA_IT_TC, ENABLE);
NVIC_EnableIRQ(DMA1_Channel2_IRQn);
DMA_Cmd(DMA1_Channel2, ENABLE);
TIM_DMACmd(TIM3, TIM_DMA_Update, ENABLE);
// 使能TIM3主輸出
TIM_Cmd(TIM3, ENABLE);
}
void DMA1_Channel2_IRQHandler(void)
{
if (DMA_GetITStatus(DMA1_IT_TC2))
{
DMA_ClearITPendingBit(DMA1_IT_TC2);
// 重新加載DMA緩沖區以重復傳輸
DMA_SetCurrDataCounter(DMA1_Channel2, BUFFER_SIZE);
DMA_Cmd(DMA1_Channel2, ENABLE);
}
}

復制代碼

久久久久久久999_99精品久久精品一区二区爱城_成人欧美一区二区三区在线播放_国产精品日本一区二区不卡视频_国产午夜视频_欧美精品在线观看免费