203 lines
6.0 KiB
C
203 lines
6.0 KiB
C
/**
|
||
******************************************************************
|
||
* @file bsp_adcd.c
|
||
* @author fire
|
||
* @version V1.1
|
||
* @date 2018-xx-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"
|
||
#include "stm32h7xx.h"
|
||
|
||
extern float ADC_vol;
|
||
|
||
ADC_HandleTypeDef ADC1_Handle;
|
||
DMA_HandleTypeDef hdma_adc1;
|
||
__IO uint16_t ADC_ConvertedValue[4];
|
||
|
||
|
||
/**
|
||
* @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();
|
||
//通道18——IO初始化
|
||
GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
|
||
GPIO_InitStruct.Pull = GPIO_NOPULL;
|
||
GPIO_InitStruct.Pin = RHEOSTAT_ADC_PIN1;
|
||
/* 配置为模拟输入，不需要上拉电阻 */
|
||
HAL_GPIO_Init(RHEOSTAT_ADC_GPIO_PORT, &GPIO_InitStruct);
|
||
//通道19——IO初始化
|
||
GPIO_InitStruct.Pin = RHEOSTAT_ADC_PIN2;
|
||
HAL_GPIO_Init(RHEOSTAT_ADC_GPIO_PORT, &GPIO_InitStruct);
|
||
//通道3——IO初始化
|
||
GPIO_InitStruct.Pin = RHEOSTAT_ADC_PIN3;
|
||
HAL_GPIO_Init(RHEOSTAT_ADC_GPIO_PORT, &GPIO_InitStruct);
|
||
//通道7——IO初始化
|
||
GPIO_InitStruct.Pin = RHEOSTAT_ADC_PIN4;
|
||
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ADC1、2时钟 */
|
||
RHEOSTAT_ADC1_CLK_ENABLE();
|
||
__HAL_RCC_DMA1_CLK_ENABLE();
|
||
|
||
hdma_adc1.Instance = DMA1_Stream1;
|
||
hdma_adc1.Init.Request = DMA_REQUEST_ADC1;
|
||
hdma_adc1.Init.Direction = DMA_PERIPH_TO_MEMORY;
|
||
hdma_adc1.Init.PeriphInc = DMA_PINC_DISABLE;
|
||
hdma_adc1.Init.MemInc = DMA_MINC_ENABLE;
|
||
hdma_adc1.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
|
||
hdma_adc1.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
|
||
hdma_adc1.Init.Mode = DMA_CIRCULAR;
|
||
hdma_adc1.Init.Priority = DMA_PRIORITY_LOW;
|
||
hdma_adc1.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
|
||
if(HAL_DMA_Init(&hdma_adc1) != HAL_OK)
|
||
{}
|
||
__HAL_LINKDMA(&ADC1_Handle,DMA_Handle,hdma_adc1);
|
||
|
||
|
||
ADC1_Handle.Instance = RHEOSTAT_ADC1;
|
||
//ADC时钟1分频
|
||
ADC1_Handle.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV2;
|
||
//使能连续转换模式
|
||
ADC1_Handle.Init.ContinuousConvMode = ENABLE;
|
||
//数据存放在数据寄存器中
|
||
ADC1_Handle.Init.ConversionDataManagement = ADC_CONVERSIONDATA_DMA_CIRCULAR;
|
||
//关闭不连续转换模式
|
||
ADC1_Handle.Init.DiscontinuousConvMode = DISABLE;
|
||
//单次转换
|
||
ADC1_Handle.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
|
||
//软件触发
|
||
ADC1_Handle.Init.ExternalTrigConv = ADC_SOFTWARE_START;
|
||
//关闭低功耗自动等待
|
||
ADC1_Handle.Init.LowPowerAutoWait = DISABLE;
|
||
//数据溢出时，覆盖写入
|
||
ADC1_Handle.Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
|
||
//不使能过采样模式
|
||
ADC1_Handle.Init.OversamplingMode = DISABLE;
|
||
//分辨率为：16bit
|
||
ADC1_Handle.Init.Resolution = ADC_RESOLUTION_16B;
|
||
//不使能多通道扫描
|
||
ADC1_Handle.Init.ScanConvMode = ENABLE;
|
||
//扫描四个通道
|
||
ADC1_Handle.Init.NbrOfConversion = 4;
|
||
//初始化 ADC1
|
||
HAL_ADC_Init(&ADC1_Handle);
|
||
|
||
//ADC校准
|
||
HAL_ADCEx_Calibration_Start(&ADC1_Handle,ADC_CALIB_OFFSET,ADC_SINGLE_ENDED);
|
||
|
||
//使用通道18
|
||
ADC_Config.Channel = RHEOSTAT_ADC_CHANNEL1;
|
||
//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 ;
|
||
//配置ADC通道
|
||
HAL_ADC_ConfigChannel(&ADC1_Handle, &ADC_Config);
|
||
|
||
//使用通道19
|
||
ADC_Config.Channel = RHEOSTAT_ADC_CHANNEL2;
|
||
//转换顺序为2
|
||
ADC_Config.Rank = ADC_REGULAR_RANK_2;
|
||
//配置ADC通道
|
||
HAL_ADC_ConfigChannel(&ADC1_Handle, &ADC_Config);
|
||
|
||
//使用通道3
|
||
ADC_Config.Channel = RHEOSTAT_ADC_CHANNEL3;
|
||
//转换顺序为1
|
||
ADC_Config.Rank = ADC_REGULAR_RANK_3;
|
||
//配置ADC通道
|
||
HAL_ADC_ConfigChannel(&ADC1_Handle, &ADC_Config);
|
||
|
||
//使用通道7
|
||
ADC_Config.Channel = RHEOSTAT_ADC_CHANNEL4;
|
||
//转换顺序为1
|
||
ADC_Config.Rank = ADC_REGULAR_RANK_4;
|
||
//配置ADC通道
|
||
HAL_ADC_ConfigChannel(&ADC1_Handle, &ADC_Config);
|
||
|
||
//使能ADC1
|
||
ADC_Enable(&ADC1_Handle);
|
||
|
||
HAL_ADC_Start_DMA(&ADC1_Handle, (uint32_t *)ADC_ConvertedValue, 4);
|
||
|
||
}
|
||
/**
|
||
* @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, 0, 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();
|
||
|
||
HAL_ADC_Start(&ADC1_Handle);
|
||
}
|
||
|
||
/*********************************************END OF FILE**********************/
|
||
|
||
|