224 lines
6.5 KiB
C
224 lines
6.5 KiB
C
/**
|
||
******************************************************************
|
||
* @file bsp_adcd.c
|
||
* @author fire
|
||
* @version V1.1
|
||
* @date 2019xx-xx
|
||
* @brief adc应用函数接口
|
||
******************************************************************
|
||
* @attention
|
||
*
|
||
* 实验平台:野火 STM32H750开发板
|
||
* 公司 :http://www.embedfire.com
|
||
* 论坛 :http://www.firebbs.cn
|
||
* 淘宝 :https://fire-stm32.taobao.com
|
||
*
|
||
******************************************************************
|
||
*/
|
||
#include "./adc/bsp_adc.h"
|
||
|
||
extern float ADC_vol;
|
||
|
||
ADC_HandleTypeDef ADC_Handle;
|
||
ADC_HandleTypeDef ADC_SLAVE_Handle;
|
||
DMA_HandleTypeDef hdma_adc;
|
||
ADC_MultiModeTypeDef ADC_multimode;
|
||
__IO uint32_t ADC_ConvertedValue = 0;
|
||
|
||
|
||
/**
|
||
* @brief ADC引脚配置函数
|
||
* @param 无
|
||
* @retval 无
|
||
*/
|
||
static void ADC_GPIO_Mode_Config(void)
|
||
{
|
||
/* 定义一个GPIO_InitTypeDef类型的结构体 */
|
||
GPIO_InitTypeDef GPIO_InitStruct;
|
||
/* 使能ADC引脚的时钟 */
|
||
RHEOSTAT_ADC_GPIO_CLK_ENABLE();
|
||
|
||
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
|
||
GPIO_InitStruct.Pull = GPIO_NOPULL;
|
||
GPIO_InitStruct.Pin = RHEOSTAT_ADC_PIN;
|
||
/* 配置为模拟输入，不需要上拉电阻 */
|
||
HAL_GPIO_Init(RHEOSTAT_ADC_GPIO_PORT, &GPIO_InitStruct);
|
||
|
||
}
|
||
|
||
/**
|
||
* @brief ADC工作模式配置函数
|
||
* @param 无
|
||
* @retval 无
|
||
*/
|
||
static void ADC_Mode_Config(void)
|
||
{
|
||
ADC_ChannelConfTypeDef ADC_Config;
|
||
|
||
RCC_PeriphCLKInitTypeDef RCC_PeriphClkInit;
|
||
/* 配置ADC3时钟源 */
|
||
/* HSE Frequency(Hz) = 25000000 */
|
||
/* PLL_M = 5 */
|
||
/* PLL_N = 160 */
|
||
/* PLL_P = 25 */
|
||
/* PLL_Q = 2 */
|
||
/* PLL_R = 2 */
|
||
/* ADC_ker_clk = 32000000 */
|
||
RCC_PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
|
||
RCC_PeriphClkInit.PLL2.PLL2FRACN = 0;
|
||
RCC_PeriphClkInit.PLL2.PLL2M = 5;
|
||
RCC_PeriphClkInit.PLL2.PLL2N = 160;
|
||
RCC_PeriphClkInit.PLL2.PLL2P = 25;
|
||
RCC_PeriphClkInit.PLL2.PLL2Q = 2;
|
||
RCC_PeriphClkInit.PLL2.PLL2R = 2;
|
||
RCC_PeriphClkInit.PLL2.PLL2RGE = RCC_PLL2VCIRANGE_2;
|
||
RCC_PeriphClkInit.PLL2.PLL2VCOSEL = RCC_PLL2VCOWIDE;
|
||
RCC_PeriphClkInit.AdcClockSelection = RCC_ADCCLKSOURCE_PLL2;
|
||
HAL_RCCEx_PeriphCLKConfig(&RCC_PeriphClkInit);
|
||
|
||
/* 使能ADC时钟 */
|
||
RHEOSTAT_ADC_MASTER_CLK_ENABLE();
|
||
/* 使能DMA时钟 */
|
||
RHEOSTAT_ADC_DMA_CLK_ENABLE();
|
||
/* 使能ADC_SLAVE时钟 */
|
||
RHEOSTAT_ADC_SLAVE_CLK_ENABLE();
|
||
|
||
//选择DMA1的Stream1
|
||
hdma_adc.Instance = RHEOSTAT_ADC_DMA_Base;
|
||
//ADC1的DMA请求
|
||
hdma_adc.Init.Request = RHEOSTAT_ADC_DMA_Request;
|
||
//传输方向：外设-》内存
|
||
hdma_adc.Init.Direction = DMA_PERIPH_TO_MEMORY;
|
||
//外设地址不自增
|
||
hdma_adc.Init.PeriphInc = DMA_PINC_DISABLE;
|
||
//内存地址不自增
|
||
hdma_adc.Init.MemInc = DMA_PINC_DISABLE;
|
||
//外设数据宽度：字
|
||
hdma_adc.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
|
||
//内存数据宽度：字
|
||
hdma_adc.Init.MemDataAlignment = DMA_PDATAALIGN_WORD;
|
||
//DMA循环传输
|
||
hdma_adc.Init.Mode = DMA_CIRCULAR;
|
||
//DMA的软件优先级：低
|
||
hdma_adc.Init.Priority = DMA_PRIORITY_LOW;
|
||
//FIFO模式关闭
|
||
hdma_adc.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
|
||
//DMA初始化
|
||
HAL_DMA_Init(&hdma_adc);
|
||
//hdma_adc和ADC_Handle.DMA_Handle链接
|
||
__HAL_LINKDMA(&ADC_Handle,DMA_Handle,hdma_adc);
|
||
|
||
ADC_Handle.Instance = RHEOSTAT_ADC_MASTER;
|
||
|
||
//ADC时钟1分频
|
||
ADC_Handle.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
|
||
//使能连续转换模式
|
||
ADC_Handle.Init.ContinuousConvMode = ENABLE;
|
||
//数据存放在数据寄存器中
|
||
ADC_Handle.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR;
|
||
//关闭不连续转换模式
|
||
ADC_Handle.Init.DiscontinuousConvMode = DISABLE;
|
||
//单次转换
|
||
ADC_Handle.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
|
||
//软件触发
|
||
ADC_Handle.Init.ExternalTrigConv = ADC_SOFTWARE_START;
|
||
//关闭低功耗自动等待
|
||
ADC_Handle.Init.LowPowerAutoWait = DISABLE;
|
||
//数据溢出时，覆盖写入
|
||
ADC_Handle.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
|
||
//不使能过采样模式
|
||
ADC_Handle.Init.OversamplingMode = DISABLE;
|
||
//分辨率为：16bit
|
||
ADC_Handle.Init.Resolution = ADC_RESOLUTION_16B;
|
||
//不使能多通道扫描
|
||
ADC_Handle.Init.ScanConvMode = DISABLE;
|
||
//初始化 ADC_MASTER
|
||
HAL_ADC_Init(&ADC_Handle);
|
||
|
||
//ADC校准
|
||
HAL_ADCEx_Calibration_Start(&ADC_Handle,ADC_CALIB_OFFSET,ADC_SINGLE_ENDED);
|
||
|
||
//初始化 ADC_SLAVE
|
||
ADC_SLAVE_Handle.Instance = RHEOSTAT_ADC_SLAVE;
|
||
ADC_SLAVE_Handle.Init = ADC_Handle.Init;
|
||
HAL_ADC_Init(&ADC_SLAVE_Handle);
|
||
|
||
//ADC校准
|
||
HAL_ADCEx_Calibration_Start(&ADC_SLAVE_Handle,ADC_CALIB_OFFSET,ADC_SINGLE_ENDED);
|
||
|
||
//使用通道18
|
||
ADC_Config.Channel = RHEOSTAT_ADC_MASTER_CHANNEL;
|
||
//转换顺序为1
|
||
ADC_Config.Rank = ADC_REGULAR_RANK_1;
|
||
//采样周期为64.5个周期
|
||
ADC_Config.SamplingTime = ADC_SAMPLETIME_64CYCLES_5;
|
||
//不使用差分输入的功能
|
||
ADC_Config.SingleDiff = ADC_SINGLE_ENDED ;
|
||
//设置ADC选择的偏移量
|
||
ADC_Config.OffsetNumber = ADC_OFFSET_NONE;
|
||
|
||
//配置ADC_MASTER通道
|
||
HAL_ADC_ConfigChannel(&ADC_Handle, &ADC_Config);
|
||
|
||
ADC_Config.Channel =RHEOSTAT_ADC_SLAVE_CHANNEL;
|
||
//配置ADC_SLAVE通道
|
||
HAL_ADC_ConfigChannel(&ADC_SLAVE_Handle, &ADC_Config);
|
||
|
||
//使能ADC1、2
|
||
ADC_Enable(&ADC_Handle);
|
||
ADC_Enable(&ADC_SLAVE_Handle);
|
||
|
||
//数据格式
|
||
ADC_multimode.DualModeData = ADC_DUALMODEDATAFORMAT_32_10_BITS;
|
||
//双重ADC交替模式
|
||
ADC_multimode.Mode = ADC_DUALMODE_INTERL;
|
||
//ADC_MASTER和ADC_SLAVE采样间隔3个ADC时钟
|
||
ADC_multimode.TwoSamplingDelay = ADC_TWOSAMPLINGDELAY_3CYCLES;
|
||
//ADC双重模式配置初始化
|
||
HAL_ADCEx_MultiModeConfigChannel(&ADC_Handle, &ADC_multimode);
|
||
//使能DMA
|
||
HAL_ADCEx_MultiModeStart_DMA(&ADC_Handle, (uint32_t*)&ADC_ConvertedValue, 1);
|
||
|
||
}
|
||
/**
|
||
* @brief ADC中断优先级配置函数
|
||
* @param 无
|
||
* @retval 无
|
||
*/
|
||
void Rheostat_ADC_NVIC_Config(void)
|
||
{
|
||
HAL_NVIC_SetPriority(Rheostat_ADC12_IRQ, 1, 0);
|
||
HAL_NVIC_EnableIRQ(Rheostat_ADC12_IRQ);
|
||
}
|
||
|
||
/**
|
||
* @brief ADC初始化函数
|
||
* @param 无
|
||
* @retval 无
|
||
*/
|
||
void ADC_Init(void)
|
||
{
|
||
|
||
ADC_GPIO_Mode_Config();
|
||
|
||
ADC_Mode_Config();
|
||
|
||
//开始ADC转换，软件触发
|
||
HAL_ADC_Start(&ADC_Handle);
|
||
HAL_ADC_Start(&ADC_SLAVE_Handle);
|
||
}
|
||
|
||
/**
|
||
* @brief 转换完成中断回调函数（非阻塞模式）
|
||
* @param AdcHandle : ADC句柄
|
||
* @retval 无
|
||
*/
|
||
void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef* AdcHandle)
|
||
{
|
||
/* 获取结果 */
|
||
ADC_ConvertedValue = HAL_ADC_GetValue(AdcHandle);
|
||
}
|
||
/*********************************************END OF FILE**********************/
|
||
|
||
|