ad7192.rar_AD71_ad7192_crack35t

/******************************************************************************** Author : CAC (China Applications Support Team) Date : January, 2012 File name : AD7192.c Description : Use the GPIO to simulate the SPI communication of AD7192 Hardware plateform : ADuC7026 and AD7190/92EBZ ********************************************************************************/ #include "ad7192.h" #include "stdio.h" #include "spi.h" unsigned long AD_MODE_REG=0; unsigned long AD_CONFIG_REG=0; void AD7192Initialization(u16 sample_rate) { u16 fs_data=0x60; fs_data=4920000/1024/sample_rate; AD7192_Reset(); AD_CONFIG_REG= CHOP_DIS|REF_IN1|AIN1_AIN2|BURN_DIS|REFDET_DIS|BUF_DIS|UB_BI|GAIN_64; // Gain = 1 AD7192_SetRegisterValue(REG_CONF,AD_CONFIG_REG,3); AD7192InternalZeroScaleCalibration(); AD7192InternalFullScaleCalibration(); AD7192ExternalZeroScaleCalibration(); AD7192ExternalFullScaleCalibration(); AD7192StartContinuousConvertion(fs_data); AD7192StartContinuousRead(); } /******************************************************************************* Description: AD7193_Reset() Function: AD7193复位函数，连续性ad7193发送超过40个1 Input: 空 Return: 空 *******************************************************************************/ void AD7192_Reset(void) { unsigned char byaregister_word[6] = {0, 0, 0, 0, 0, 0}; /*发送数组*/ unsigned char byreturn_value[6] = {0, 0, 0, 0, 0, 0}; /*返回数组*/ /*发送数组赋值*/ byaregister_word[0] = 0xFF; byaregister_word[1] = 0xFF; byaregister_word[2] = 0xFF; byaregister_word[3] = 0xFF; byaregister_word[4] = 0xFF; byaregister_word[5] = 0xFF; /*发送复位指令*/ SPI_ReadWriteBytes(SPI1,byaregister_word,byreturn_value,sizeof(byaregister_word)); } /******************************************************************************* Description: SPI1_AD7193_SetRegisterValue(unsigned char byregister_address, unsigned long dwregister_value, unsigned char bytes_number,ConvertType convert) Function: 设置寄存器值 Input: byregister_address：寄存器地址 dwregister_value： 寄存器值 bytes_number： 寄存器字节数 Return: 空 *******************************************************************************/ void AD7192_SetRegisterValue(unsigned char byregister_address, unsigned long dwregister_value, unsigned char bytes_number) { unsigned char byawrite_command_buf[5] = {0, 0, 0, 0, 0}; /*指令数组*/ unsigned char byareturn_value_buf[5] = {0, 0, 0, 0, 0}; /*ad返回数组*/ /*获取dwregister_value地址*/ unsigned char* data_pointer = (unsigned char*)&dwregister_value; /*获取dwregister_value字节数*/ unsigned char bytes_nr = bytes_number; /*通信寄存器值*/ byawrite_command_buf[0] = WEN|RW_W|(byregister_address<<3)|CREAD_DIS; /*调整发送顺序，dwregister_value先发高位字节，后发低位字节*/ while(bytes_nr > 0) { byawrite_command_buf[bytes_nr] = *data_pointer;//倒着追加数据 data_pointer ++; bytes_nr --; } /*写入ad7193*/ SPI_ReadWriteBytes(SPI1,byawrite_command_buf,byareturn_value_buf,bytes_number + 1); } /******************************************************************************* Description: SPI1_AD7193_GetRegisterValue(unsigned char byregister_address, unsigned char bynumber_of_bytes_for_register) Function: 读取寄存器值 Input: byregister_address： 寄存器地址 bynumber_of_bytes_for_register：寄存器字节数 Return: 数值 *******************************************************************************/ unsigned long AD7193_GetRegisterValue(unsigned char byregister_address, unsigned char bynumber_of_bytes_for_register) { unsigned char byaregister_word_buf[5] = {0, 0, 0, 0, 0}; /*发送数组*/ unsigned char byareturn_value_buf[5] = {0, 0, 0, 0, 0}; /*ad返回数组*/ unsigned long buffer = 0x0; /*返回数值*/ unsigned char i = 0; /*通信寄存器值*/ byaregister_word_buf[0] = WEN|RW_R|(byregister_address<<3)|CREAD_DIS; /*读取寄存器值*/ SPI_ReadWriteBytes(SPI1,byaregister_word_buf,byareturn_value_buf,bynumber_of_bytes_for_register + 1); /*调整循序，获得返回值*/ for(i = 1; i < bynumber_of_bytes_for_register + 1; i++) { buffer = (buffer << 8) + byareturn_value_buf[i]; } return buffer; } void AD7192StartContinuousRead(void) { unsigned char WriteBuf[1]; unsigned char ReadBuf[1]; WriteBuf[0] = WEN|RW_R|(REG_DATA<<3)|CREAD_EN; AD7192_WaitRdyGoLow(); SPI_ReadWriteBytes(SPI1,WriteBuf,ReadBuf,1); } /******************************************************************************* Description: AD7193_WaitRdyGoLow() Function: 等待ad7193RDY位引脚拉低 Input: 空 Return: 空 *******************************************************************************/ void AD7192_WaitRdyGoLow(void) { while(AD7192_RDY) { } } void AD7192ExitContinuousRead(void) { unsigned char WriteBuf[1]; unsigned char ReadBuf[1]; WriteBuf[0] = WEN|RW_R|(REG_DATA<<3)|CREAD_DIS; AD7192_WaitRdyGoLow(); SPI_ReadWriteBytes(SPI1,WriteBuf,ReadBuf,1); } void AD7192InternalZeroScaleCalibration(void) { AD_MODE_REG = 0; AD_MODE_REG = MODE_INZCL|DAT_STA_EN|INCLK_MCLK2EN|SINC_3|ENPAR_EN|CLK_DIV_DIS|SINGLECYCLE_DIS|REJ60_DIS|0x60; AD7192_SetRegisterValue(REG_MODE,AD_MODE_REG,3); AD7192_WaitRdyGoLow(); } void AD7192InternalFullScaleCalibration(void) { AD_MODE_REG = 0; AD_MODE_REG = MODE_INFCL|DAT_STA_EN|INCLK_MCLK2EN|SINC_3|ENPAR_EN|CLK_DIV_DIS|SINGLECYCLE_DIS|REJ60_DIS|0x60; AD7192_SetRegisterValue(REG_MODE,AD_MODE_REG,3); AD7192_WaitRdyGoLow(); } void AD7192ExternalZeroScaleCalibration(void) { AD_MODE_REG = 0; AD_MODE_REG = MODE_INFCL|DAT_STA_EN|INCLK_MCLK2EN|SINC_3|ENPAR_EN|CLK_DIV_DIS|SINGLECYCLE_DIS|REJ60_DIS|0x60; AD7192_SetRegisterValue(REG_MODE,AD_MODE_REG,3); AD7192_WaitRdyGoLow(); } void AD7192ExternalFullScaleCalibration(void) { AD_MODE_REG = 0; AD_MODE_REG = MODE_SYSFCL|DAT_STA_EN|INCLK_MCLK2EN|SINC_3|ENPAR_EN|CLK_DIV_DIS|SINGLECYCLE_DIS|REJ60_DIS|0x60; AD7192_SetRegisterValue(REG_MODE,AD_MODE_REG,3); AD7192_WaitRdyGoLow(); } void AD7192StartSingleConvertion(u16 fs_val) { AD_MODE_REG = 0; AD_MODE_REG = MODE_SING|DAT_STA_EN|INCLK_MCLK2EN|SINC_3|ENPAR_EN|CLK_DIV_DIS|SINGLECYCLE_DIS|REJ60_DIS|fs_val; AD7192_SetRegisterValue(REG_MODE,AD_MODE_REG,3); } void AD7192StartContinuousConvertion(u16 fs_val) { AD_MODE_REG = 0; AD_MODE_REG= MODE_CONT|DAT_STA_EN|INCLK_MCLK2EN|SINC_3|ENPAR_EN|CLK_DIV_DIS|SINGLECYCLE_DIS|REJ60_DIS|fs_val; //Output Rate = MCLK/1024/128 without chop AD7192_SetRegisterValue(REG_MODE,AD_MODE_REG,3); } unsigned long int AD7192ReadTemperature(void) { unsigned long ad_d