int main(void)//8通道自动扫描转换示例 { RCC_Configuration(); GPIO_Configuration(); NVIC_Configuration(); RST_PD_H; DAISY_IN_L; Delay(0x1fff); test=ADS8688_INIT(); Delay(0x1fff); ADS8688_Write_Program_Register(0x02,0x00);//所有通道退出低功耗状态 ADS8688_Write_Program_Register(0x01,0xff);//使能所有通道 Set_CH_Range_Select(0X05,0x02);//设置通道0的输入范围:0.625*Vref Set_CH_Range_Select(0X06,0x02);//设置通道1的输入范围:0.625*Vref Set_CH_Range_Select(0X07,0x02);//设置通道2的输入范围:0.625*Vref Set_CH_Range_Select(0X08,0x02);//设置通道3的输入范围:0.625*Vref Set_CH_Range_Select(0X09,0x02);//设置通道4的输入范围:0.625*Vref Set_CH_Range_Select(0X0a,0x02);//设置通道5的输入范围:0.625*Vref Set_CH_Range_Select(0X0b,0x02);//设置通道6的输入范围:0.625*Vref Set_CH_Range_Select(0X0c,0x02);//设置通道7的输入范围:0.625*Vref //0x00 -> +-2.5*ref //0x01 -> +-1.25*ref //0x02 -> +-0.625*ref //0x03 -> +2.5*ref //0x04 -> +1.25*ref AUTO_RST_Mode();//进入自动扫描模式
时间: 2024-04-19 18:29:08 浏览: 20
这段代码是一个主函数的示例,实现了ADS8688的8通道自动扫描转换功能。在主函数中进行了一些初始化和配置的操作,如RCC配置、GPIO配置和NVIC配置等。
接下来的代码片段中,首先对ADS8688进行了一些初始化的操作,包括拉高复位引脚(RST_PD_H)、拉低DAISY_IN引脚(DAISY_IN_L)以及延时等待一段时间。然后调用ADS8688_INIT()函数对ADS8688进行初始化。
之后通过ADS8688_Write_Program_Register()函数设置了通道的工作模式,使得所有通道退出低功耗状态并使能所有通道。
接下来通过Set_CH_Range_Select()函数为每个通道设置输入范围。这里将通道0~7的输入范围都设置为0.625*Vref。
最后调用AUTO_RST_Mode()函数进入自动扫描模式。
需要注意的是,这段代码中使用了一些未定义的宏定义和函数,如RCC_Configuration()、GPIO_Configuration()等,可能是根据具体的开发环境和硬件进行的配置和定义。如果需要完整运行代码,请确保提供了这些宏定义和函数的实现或根据具体情况进行修改。
相关问题
HAL_UARTEx_ReceiveToIdle_DMA示例
以下是HAL_UARTEx_ReceiveToIdle_DMA的示例代码:
```c
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f4xx_hal.h"
/* Private variables ---------------------------------------------------------*/
UART_HandleTypeDef huart2;
DMA_HandleTypeDef hdma_usart2_rx;
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_USART2_UART_Init(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
HAL_Init();
/* Configure the system clock */
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_DMA_Init();
MX_USART2_UART_Init();
uint8_t buffer[100] = {0};
uint32_t rx_size;
while (1)
{
// Start UART reception in DMA mode until idle
HAL_UARTEx_ReceiveToIdle_DMA(&huart2, buffer, sizeof(buffer));
// Wait until idle
while (HAL_UARTEx_GetRxIdleness(&huart2) != RESET);
// Get received data size
rx_size = sizeof(buffer) - __HAL_DMA_GET_COUNTER(&hdma_usart2_rx);
// Process received data
// ...
// Clear buffer
memset(buffer, 0, sizeof(buffer));
}
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief USART2 Initialization Function
* @param None
* @retval None
*/
static void MX_USART2_UART_Init(void)
{
huart2.Instance = USART2;
huart2.Init.BaudRate = 115200;
huart2.Init.WordLength = UART_WORDLENGTH_8B;
huart2.Init.StopBits = UART_STOPBITS_1;
huart2.Init.Parity = UART_PARITY_NONE;
huart2.Init.Mode = UART_MODE_TX_RX;
huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart2.Init.OverSampling = UART_OVERSAMPLING_16;
huart2.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart2.Init.ClockPrescaler = UART_PRESCALER_DIV1;
huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart2) != HAL_OK)
{
Error_Handler();
}
}
/**
* Enable DMA controller clock
*/
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMA1_CLK_ENABLE();
/* DMA interrupt init */
/* DMA1_Stream5_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream5_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream5_IRQn);
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOH_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
}
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* User may add here some code to deal with this error */
while(1)
{
}
}
/**
* @brief This function is executed in case of DMA interrupt occurrence.
* @retval None
*/
void DMA1_Stream5_IRQHandler(void)
{
HAL_DMA_IRQHandler(&hdma_usart2_rx);
}
/**
* @brief This function is executed when DMA reception is completed.
* @param huart: UART handle
* @retval None
*/
void HAL_UARTEx_RxEventCallback(UART_HandleTypeDef *huart)
{
if (huart->Instance == USART2)
{
// DMA reception completed, do something if needed
}
}
```
在此示例代码中,我们使用STM32Cube HAL库实现了UART的DMA接收,使用了HAL_UARTEx_ReceiveToIdle_DMA函数。在主循环中,我们不断调用该函数以启动DMA接收,然后等待DMA接收完成。一旦接收完成,我们就可以对接收到的数据进行处理。注意,在处理完数据后,我们需要清空接收缓冲区,以便下一次接收。
DMA1_Channel1_IRQn 具体的使用代码
好的,以下是一个使用 DMA1_Channel1_IRQn 中断的 STM32F4 程序的代码示例,主要实现了从 ADC1 数据寄存器中读取采样数据,通过 DMA1 传输到内存中,并在传输完成时通过 DMA1_Channel1_IRQHandler 中断进行处理:
```c
#include "stm32f4xx.h"
#include "stm32f4xx_dma.h"
#include "stm32f4xx_adc.h"
#define ADC1_DR_ADDRESS ((uint32_t)0x4001204C)
#define ADC1_CHANNEL 0
volatile uint16_t ADCValue;
void DMA_Configuration(void)
{
DMA_InitTypeDef DMA_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1, ENABLE);
DMA_DeInit(DMA1_Stream0);
DMA_InitStructure.DMA_Channel = DMA_Channel_0;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&ADC1->DR;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)&ADCValue;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = 1;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_HalfFull;
DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(DMA1_Stream0, &DMA_InitStructure);
DMA_Cmd(DMA1_Stream0, ENABLE);
}
void ADC_Configuration(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStructure);
ADC_CommonInitTypeDef ADC_CommonInitStructure;
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div2;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_T1_CC1;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 1;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_15Cycles);
ADC_DMARequestAfterLastTransferCmd(ADC1, ENABLE);
ADC_DMACmd(ADC1, ENABLE);
ADC_Cmd(ADC1, ENABLE);
ADC_SoftwareStartConv(ADC1);
}
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void DMA1_Channel1_IRQHandler(void)
{
if(DMA_GetFlagStatus(DMA1_Stream0, DMA_FLAG_TCIF0) != RESET)
{
DMA_ClearFlag(DMA1_Stream0, DMA_FLAG_TCIF0);
ADC_SoftwareStartConv(ADC1);
// 处理采样数据
}
}
int main(void)
{
DMA_Configuration();
ADC_Configuration();
NVIC_Configuration();
while(1);
}
```
这份代码主要完成了以下工作:
1. 配置 ADC1 和 GPIOA0,设置采样通道和采样时间;
2. 配置 DMA1_Stream0,将 ADC1 的 DR 寄存器的值传输到 ADCValue 变量中;
3. 配置 DMA1_Channel1_IRQn 中断,设置优先级,并在传输完成时进行处理。
在程序中,ADC_SoftwareStartConv 函数用于启动 ADC1 的转换,将采样数据传输到 ADCValue 变量中,当 DMA1_Stream0 传输完成时,会触发 DMA1_Channel1_IRQHandler 中断,我们可以在此中断服务函数中进行采样数据的处理。