DAC8718.rar_DAC8718_DAC8718.rar

/***************************************************** This program was produced by the CodeWizardAVR V2.04.4a Advanced Automatic Program Generator ?Copyright 1998-2009 Pavel Haiduc, HP InfoTech s.r.l. http://www.hpinfotech.com Project : 激光颗粒计数器 Version : 1.0 Date : 2013/5/13 Author : 张行海 Company : 山东惠工 File Name:DAC.c Comments:用来确定标定颗粒的基准电压 Chip type : stm32f103 Program type : Application ARM Core Clock frequency: 8 MHz Memory model : Small External RAM size : 64K 说 明：使用DAC8718的输出来作为比较器AD79JR的基准 *****************************************************/ /* Includes ------------------------------------------------------------------*/ #include "stm32f10x_GPIO.h" #include "DAC.h" // #define CLR_SET GPIO_WriteBit(GPIOD, GPIO_Pin_9, Bit_SET) // #define CLR_RESET GPIO_WriteBit(GPIOD, GPIO_Pin_9, Bit_RESET) #define CLR_SET GPIO_WriteBit(GPIOB, GPIO_Pin_8,Bit_SET) // #define CLR_RESET GPIO_WriteBit(GPIOB, GPIO_Pin_8,Bit_RESET) // #define WAKEUP_SET GPIO_WriteBit(GPIOC, GPIO_Pin_10, Bit_SET) // #define WAKEUP_RESET GPIO_WriteBit(GPIOC, GPIO_Pin_10, Bit_RESET) // #define LDAC_SET GPIO_WriteBit(GPIOC, GPIO_Pin_11, Bit_SET) // #define LDAC_RESET GPIO_WriteBit(GPIOC, GPIO_Pin_11, Bit_RESET) // #define SDO_SET GPIO_WriteBit(GPIOC, GPIO_Pin_12, Bit_SET) // #define SDO_RESET GPIO_WriteBit(GPIOC, GPIO_Pin_12, Bit_RESET) // #define SDI_SET GPIO_WriteBit(GPIOD, GPIO_Pin_0, Bit_SET) // #define SDI_RESET GPIO_WriteBit(GPIOD, GPIO_Pin_0, Bit_RESET) // #define CS_SET GPIO_WriteBit(GPIOD, GPIO_Pin_1, Bit_SET) // #define CS_RESET GPIO_WriteBit(GPIOD, GPIO_Pin_1, Bit_RESET) // #define SCLK_SET GPIO_WriteBit(GPIOD, GPIO_Pin_2, Bit_SET) // #define SCLK_RESET GPIO_WriteBit(GPIOD, GPIO_Pin_2, Bit_RESET) // #define RST_SET GPIO_WriteBit(GPIOD, GPIO_Pin_7, Bit_SET) // #define RST_RESET GPIO_WriteBit(GPIOD, GPIO_Pin_7, Bit_RESET) // extern void Delay(vu32 nCount ); /*---------------------------------------------- *函数名称:Reset_DAc8718() *函数功能:复位DAC8718 *入口参数:无 *出口参数:无 ------------------------------------------- */ void Reset_DAc8718(void) { CS_SET; RST_SET; //????? Delay(500); RST_RESET; //?? Delay(500); RST_SET; //????? CS_RESET; } /*---------------------------------------------- *函数名称:void DAC8718_Write(unsigned long OutData) *函数功能:写DAC8718 *入口参数:OutData 外部写入dac8718的数据 *出口参数:无 ------------------------------------------- */ void DAC8718_Write(unsigned long OutData) //???24bit??? { unsigned char i; unsigned long value; value = OutData & 0x00ffffff; //??24bit value = value<<8; //??8?,ok LDAC_SET; SCLK_SET; CS_SET; CS_RESET; for ( i = 0; i < 24; i ++ ) { SCLK_SET; Delay(50); if((value & 0x80000000) == 0x80000000) { SDI_SET; } else { SDI_RESET; } Delay(50); SCLK_RESET; Delay(100); value = value << 1; } CS_SET; CS_SET; CS_SET; Delay(200); LDAC_RESET; Delay(100); LDAC_SET; Delay(500); } // /*---------------------------------------------- // *函数名称:write_DAC8718_control_register() // *函数功能:写DAC8718控制寄存器 // *入口参数: pp 字符串 // *出口参数:无 // ------------------------------------------- */ // void Write_DAC8718_control_register(void) // { // DAC8718_Write(0x00200012); //09-11 21:36 ???? // } /*---------------------------------------------- *函数名称:DAC8718_init() *函数功能:写DAC8718控制寄存器 *入口参数: pp 字符串 *出口参数:无 ------------------------------------------- */ void DAC8718_init(void) { CLR_SET; //clr-1 Delay(500); //500---50 CLR_RESET; Delay(500); //500---50 CLR_SET; Reset_DAc8718(); //rst-1 DAC8718_Write(0x00000000); DAC8718_Write(0x00030000); //Offset DAC - A=0 DAC8718_Write(0x00040000); //Offset DAC - B=0 DAC8718_Write(0x00060000); //SLEEP = 0,正常模式 DAC8718_Write(0x00100000); //zero -0 DAC8718_Write(0x00180006); //GAIN0 =6 }