网站建设规划书结构,wordpress历史版本下载,网站建设能赚很多钱,东城网站建设AD5663是ADI公司的一款DAC模块#xff0c;用以实现两路模拟量信号输出。该芯片通过SPI通信来驱动。下面讲解使用STM32F7主控芯片来控制AD5663模拟量输出的流程。
配置STM32F7 SPI通信管脚 STM32CubeMX生成SPI驱动代码
/* SPI3 init function */
void MX_SPI3_Init(void)
{/*…AD5663是ADI公司的一款DAC模块用以实现两路模拟量信号输出。该芯片通过SPI通信来驱动。下面讲解使用STM32F7主控芯片来控制AD5663模拟量输出的流程。
配置STM32F7 SPI通信管脚 STM32CubeMX生成SPI驱动代码
/* SPI3 init function */
void MX_SPI3_Init(void)
{/* USER CODE BEGIN SPI3_Init 0 *//* USER CODE END SPI3_Init 0 *//* USER CODE BEGIN SPI3_Init 1 *//* USER CODE END SPI3_Init 1 */hspi3.Instance SPI3;hspi3.Init.Mode SPI_MODE_MASTER;hspi3.Init.Direction SPI_DIRECTION_2LINES;hspi3.Init.DataSize SPI_DATASIZE_8BIT;hspi3.Init.CLKPolarity SPI_POLARITY_LOW;hspi3.Init.CLKPhase SPI_PHASE_2EDGE;hspi3.Init.NSS SPI_NSS_SOFT;hspi3.Init.BaudRatePrescaler SPI_BAUDRATEPRESCALER_32;hspi3.Init.FirstBit SPI_FIRSTBIT_MSB;hspi3.Init.TIMode SPI_TIMODE_DISABLE;hspi3.Init.CRCCalculation SPI_CRCCALCULATION_DISABLE;hspi3.Init.CRCPolynomial 7;hspi3.Init.CRCLength SPI_CRC_LENGTH_DATASIZE;hspi3.Init.NSSPMode SPI_NSS_PULSE_DISABLE;if (HAL_SPI_Init(hspi3) ! HAL_OK){Error_Handler();}/* USER CODE BEGIN SPI3_Init 2 *//* USER CODE END SPI3_Init 2 */}
AD5663驱动代码开发
头文件io.h
#ifndef __IO_H__
#define __IO_H__#ifdef __cplusplus
extern C {
#endif/* Includes ------------------------------------------------------------------*/
#include gpio.h/* USER CODE BEGIN Includes *//* USER CODE END Includes *//* USER CODE BEGIN Private defines *//* USER CODE END Private defines */
/* USER CODE BEGIN Prototypes *//*ÃüÁÒå*/
#define Write_to_Input_Register 0x000000
#define Update_DAC_Register 0x080000
#define Software_LDAC 0x100000
#define WriteTo_Update_DAC_Channel 0x180000
#define Power_Down 0x200000
#define RESET 0x280000
#define LDAC_Register_Setup 0x300000
#define Reference_Set 0x380000/*µØַģʽ,Ñ¡ÔñDACͨµÀ*/
#define DAC_Channel_A 0x000000
#define DAC_Channel_B 0x010000
#define DAC_Channel_All 0X070000//FOR POWER DOWN
#define NORMAL 0X00
#define K1Ohm 0X10
#define K100Ohm 0X20
#define ThreeState 0X30#define PDACA 0X01
#define PDACB 0X02typedef enum
{AOUT1 0,AOUT2 1,
} AOUT_NAME;extern void IO_Initialize(void);
extern void Set_AOUT_Level(AOUT_NAME aout, uint16_t level);
extern void IO_Function_Test(void);
源文件io.c
#include string.h
#include io.h
#include spi.h
#include usart.h/*Global variables*/
uint16_t Aout1, Aout2;static void AD5663_PowerDown(void)
{uint32_t inputShiftData 0;uint8_t SendSPIByte[3];inputShiftData Power_Down| NORMAL | PDACA | PDACB;SendSPIByte[0] inputShiftData16;SendSPIByte[1] inputShiftData8;SendSPIByte[2] inputShiftData;HAL_GPIO_WritePin(DA_SYNC_GPIO_Port, DA_SYNC_Pin, GPIO_PIN_RESET);HAL_SPI_Transmit(hspi3, SendSPIByte, sizeof(SendSPIByte), 100);HAL_GPIO_WritePin(DA_SYNC_GPIO_Port, DA_SYNC_Pin, GPIO_PIN_SET);
}void IO_Initialize(void)
{AD5663_PowerDown();
}void Set_AOUT_Level(AOUT_NAME aout, uint16_t level)
{uint32_t inputShiftData 0;uint8_t SendSPIByte[3];if(aout AOUT1){Aout1 level;inputShiftData WriteTo_Update_DAC_Channel | DAC_Channel_A | level;}else if(aout AOUT2){Aout2 level;inputShiftData WriteTo_Update_DAC_Channel | DAC_Channel_B | level;}SendSPIByte[0] inputShiftData16;SendSPIByte[1] inputShiftData8;SendSPIByte[2] inputShiftData;HAL_GPIO_WritePin(DA_SYNC_GPIO_Port, DA_SYNC_Pin, GPIO_PIN_RESET);HAL_SPI_Transmit(hspi3, SendSPIByte, sizeof(SendSPIByte), 100);HAL_GPIO_WritePin(DA_SYNC_GPIO_Port, DA_SYNC_Pin, GPIO_PIN_SET);
}void IO_Function_Test(void)
{Set_AOUT_Level(AOUT1, 0x8000);Set_AOUT_Level(AOUT2, 0xEFFF);
}
