标题:
国产8通道24位ADC SGM58601(替代ADS1256)GD32单片机驱动程序调试
[打印本页]
作者:
弓长张
时间:
2024-1-19 20:49
标题:
国产8通道24位ADC SGM58601(替代ADS1256)GD32单片机驱动程序调试
调试过程中遇到的问题:
最大的问题,使用SPI驱动时读数为0 -1 或者其他很大的数(都是不对的数),经过反复验证后发现与SPI时钟有关,参考STM32 驱动ADS1256程序 硬件SPI 时钟分频为256,烧录后驱动正常,修改分频系数后,读数异常。但是256分频后 时钟频率约1.几KHz 速度太慢。有反复调试了一会,发现SPI时钟速度 ,ADC采样频率都可能会导致读数错误,具体问题没有细究。经过调试后可以使用该程序驱动SGM58601。下面附上代码,单片机为GD32E103。
单片机源程序如下:
#ifndef _SGM58601_H
#define _SGM58601_H
#include "gd32e10x.h"
#include "systick.h"
#include "spi.h"
#define SGM58601_DRDY_PIN GPIO_PIN_3
#define SGM58601_DRDY gpio_input_bit_get(GPIOA, SGM58601_DRDY_PIN)
//define commands
#define SGM58601_CMD_WAKEUP 0x00
#define SGM58601_CMD_RDATA 0x01
#define SGM58601_CMD_RDATAC 0x03
#define SGM58601_CMD_SDATAC 0x0f
#define SGM58601_CMD_RREG 0x10
#define SGM58601_CMD_WREG 0x50
#define SGM58601_CMD_SELFCAL 0xf0
#define SGM58601_CMD_SELFOCAL 0xf1
#define SGM58601_CMD_SELFGCAL 0xf2
#define SGM58601_CMD_SYSOCAL 0xf3
#define SGM58601_CMD_SYSGCAL 0xf4
#define SGM58601_CMD_SYNC 0xfc
#define SGM58601_CMD_STANDBY 0xfd
#define SGM58601_CMD_REST 0xfe
//define the SGM58601 register values
#define SGM58601_STATUS 0x00
#define SGM58601_MUX 0x01
#define SGM58601_ADCON 0x02
#define SGM58601_DRATE 0x03
#define SGM58601_IO 0x04
#define SGM58601_OFC0 0x05
#define SGM58601_OFC1 0x06
#define SGM58601_OFC2 0x07
#define SGM58601_FSC0 0x08
#define SGM58601_FSC1 0x09
#define SGM58601_FSC2 0x0A
//define multiplexer codes
#define SGM58601_MUXP_AIN0 0x00
#define SGM58601_MUXP_AIN1 0x10
#define SGM58601_MUXP_AIN2 0x20
#define SGM58601_MUXP_AIN3 0x30
#define SGM58601_MUXP_AIN4 0x40
#define SGM58601_MUXP_AIN5 0x50
#define SGM58601_MUXP_AIN6 0x60
#define SGM58601_MUXP_AIN7 0x70
#define SGM58601_MUXP_AINCOM 0x80
#define SGM58601_MUXN_AIN0 0x00
#define SGM58601_MUXN_AIN1 0x01
#define SGM58601_MUXN_AIN2 0x02
#define SGM58601_MUXN_AIN3 0x03
#define SGM58601_MUXN_AIN4 0x04
#define SGM58601_MUXN_AIN5 0x05
#define SGM58601_MUXN_AIN6 0x06
#define SGM58601_MUXN_AIN7 0x07
#define SGM58601_MUXN_AINCOM 0x08
//define gain codes
#define SGM58601_GAIN_1 0x00
#define SGM58601_GAIN_2 0x01
#define SGM58601_GAIN_4 0x02
#define SGM58601_GAIN_8 0x03
#define SGM58601_GAIN_16 0x04
#define SGM58601_GAIN_32 0x05
#define SGM58601_GAIN_64 0x06
//#define SGM58601_GAIN_64 0x07
//define drate codes
#define SGM58601_DRATE_30000SPS 0xF0
#define SGM58601_DRATE_15000SPS 0xE0
#define SGM58601_DRATE_7500SPS 0xD0
#define SGM58601_DRATE_3750SPS 0xC0
#define SGM58601_DRATE_2000SPS 0xB0
#define SGM58601_DRATE_1000SPS 0xA1
#define SGM58601_DRATE_500SPS 0x92
#define SGM58601_DRATE_100SPS 0x82
#define SGM58601_DRATE_60SPS 0x72
#define SGM58601_DRATE_50SPS 0x63
#define SGM58601_DRATE_30SPS 0x53
#define SGM58601_DRATE_25SPS 0x43
#define SGM58601_DRATE_15SPS 0x33
#define SGM58601_DRATE_10SPS 0x23
#define SGM58601_DRATE_5SPS 0x13
#define SGM58601_DRATE_2_5SPS 0x03
// define commands
#define SGM58601_CMD_WAKEUP 0x00
#define SGM58601_CMD_RDATA 0x01
#define SGM58601_CMD_RDATAC 0x03
#define SGM58601_CMD_SDATAC 0x0f
#define SGM58601_CMD_RREG 0x10
#define SGM58601_CMD_WREG 0x50
#define SGM58601_CMD_SELFCAL 0xf0
#define SGM58601_CMD_SELFOCAL 0xf1
#define SGM58601_CMD_SELFGCAL 0xf2
#define SGM58601_CMD_SYSOCAL 0xf3
#define SGM58601_CMD_SYSGCAL 0xf4
#define SGM58601_CMD_SYNC 0xfc
#define SGM58601_CMD_STANDBY 0xfd
#define SGM58601_CMD_REST 0xfe
//define the SGM58601 register values
#define SGM58601_STATUS 0x00
#define SGM58601_MUX 0x01
#define SGM58601_ADCON 0x02
#define SGM58601_DRATE 0x03
#define SGM58601_IO 0x04
#define SGM58601_OFC0 0x05
#define SGM58601_OFC1 0x06
#define SGM58601_OFC2 0x07
#define SGM58601_FSC0 0x08
#define SGM58601_FSC1 0x09
#define SGM58601_FSC2 0x0A
//define multiplexer codes
#define SGM58601_MUXP_AIN0 0x00
#define SGM58601_MUXP_AIN1 0x10
#define SGM58601_MUXP_AIN2 0x20
#define SGM58601_MUXP_AIN3 0x30
#define SGM58601_MUXP_AIN4 0x40
#define SGM58601_MUXP_AIN5 0x50
#define SGM58601_MUXP_AIN6 0x60
#define SGM58601_MUXP_AIN7 0x70
#define SGM58601_MUXP_AINCOM 0x80
#define SGM58601_MUXN_AIN0 0x00
#define SGM58601_MUXN_AIN1 0x01
#define SGM58601_MUXN_AIN2 0x02
#define SGM58601_MUXN_AIN3 0x03
#define SGM58601_MUXN_AIN4 0x04
#define SGM58601_MUXN_AIN5 0x05
#define SGM58601_MUXN_AIN6 0x06
#define SGM58601_MUXN_AIN7 0x07
#define SGM58601_MUXN_AINCOM 0x08
//define gain codes
#define SGM58601_GAIN_1 0x00
#define SGM58601_GAIN_2 0x01
#define SGM58601_GAIN_4 0x02
#define SGM58601_GAIN_8 0x03
#define SGM58601_GAIN_16 0x04
#define SGM58601_GAIN_32 0x05
#define SGM58601_GAIN_64 0x06
//#define SGM58601_GAIN_64 0x07
//define drate codes
#define SGM58601_DRATE_30000SPS 0xF0
#define SGM58601_DRATE_15000SPS 0xE0
#define SGM58601_DRATE_7500SPS 0xD0
#define SGM58601_DRATE_3750SPS 0xC0
#define SGM58601_DRATE_2000SPS 0xB0
#define SGM58601_DRATE_1000SPS 0xA1
#define SGM58601_DRATE_500SPS 0x92
#define SGM58601_DRATE_100SPS 0x82
#define SGM58601_DRATE_60SPS 0x72
#define SGM58601_DRATE_50SPS 0x63
#define SGM58601_DRATE_30SPS 0x53
#define SGM58601_DRATE_25SPS 0x43
#define SGM58601_DRATE_15SPS 0x33
#define SGM58601_DRATE_10SPS 0x23
#define SGM58601_DRATE_5SPS 0x13
#define SGM58601_DRATE_2_5SPS 0x03
void SGM58601_Gpio_Init(void); //SGM58601 GPIO初始化
void SGM58601AWREG(unsigned char regaddr,unsigned char databyte); //SGM58601A 写寄存器
void SGM58601BWREG(unsigned char regaddr,unsigned char databyte); //SGM58601B 写寄存器
signed int SGM58601AReadData(unsigned char channel); //SGM58601 读数据
signed int SGM58601BReadData(unsigned char channel); //SGM58601 读数据
void SGM58601A_Init(void); //SGM58601A 单端采集初始化
void SGM58601B_Init(void); //SGM58601B 差分采集初始化
int SGM58601_Read_SingleData(unsigned char channel); //SGM58601A 单端ADC读取
int SGM58601_Read_DiffData(void); //SGM58601B 差分ADC读取
#endif
复制代码
#include "SGM58601.H"
void SGM58601_Gpio_Init(void)
{
gpio_init(SGM58601_GPIO_RCU,GPIO_MODE_IN_FLOATING,GPIO_OSPEED_50MHZ, SGM58601_DRDY_PIN);
}
void SGM58601AWREG(unsigned char regaddr,unsigned char databyte) //A
{
SPI_CS1_ENABLE();
while(SGM58601_DRDY);//当SGM58601_DRDY为低时才能写寄存器
//向寄存器写入数据地址
SPI0_ReadWriteByte(SGM58601_CMD_WREG | (regaddr & 0x0F));
//写入数据的个数n-1
SPI0_ReadWriteByte(0x00);
//向regaddr地址指向的寄存器写入数据databyte
SPI0_ReadWriteByte(databyte);
SPI_CS1_DISABLE();
}
void SGM58601BWREG(unsigned char regaddr,unsigned char databyte) //B
{
SPI_CS2_ENABLE();
while(SGM58601_DRDY);//当SGM58601_DRDY为低时才能写寄存器
//向寄存器写入数据地址
SPI0_ReadWriteByte(SGM58601_CMD_WREG | (regaddr & 0x0F));
//写入数据的个数n-1
SPI0_ReadWriteByte(0x00);
//向regaddr地址指向的寄存器写入数据databyte
SPI0_ReadWriteByte(databyte);
SPI_CS2_DISABLE();
}
//初始化SGM58601 // 单端采集
void SGM58601A_Init(void) //A
{
//*************自校准****************
// while(SGM58601_DRDY);
// SPI_CS1_ENABLE();
// SPI0_ReadWriteByte(SGM58601_CMD_SELFCAL);
// while(SGM58601_DRDY);
// SPI_CS1_DISABLE();
//**********************************
SGM58601AWREG(SGM58601_STATUS,0x06); // 高位在前、使用缓冲
// SGM58601AWREG(SGM58601_STATUS,0x04); // 高位在前、不使用缓冲
// SGM58601AWREG(SGM58601_MUX,0x08); // 初始化端口A0为‘+’,AINCOM位‘-’
SGM58601AWREG(SGM58601_ADCON,SGM58601_GAIN_1); // 放大倍数1
SGM58601AWREG(SGM58601_DRATE,SGM58601_DRATE_7500SPS); // 数据10sps
SGM58601AWREG(SGM58601_IO,0x00);
//*************自校准****************
// while(SGM58601_DRDY);
// SPI_CS1_ENABLE();
// SPI0_ReadWriteByte(SGM58601_CMD_SELFCAL);
// while(SGM58601_DRDY);
// SPI_CS1_DISABLE();
//**********************************
}
//初始化SGM58601 // 差分采集
void SGM58601B_Init(void) //B
{
//*************自校准****************
// while(SGM58601_DRDY);
// SPI_CS2_ENABLE();
// SPI0_ReadWriteByte(SGM58601_CMD_SELFCAL);
// while(SGM58601_DRDY);
// SPI_CS2_DISABLE();
//**********************************
SGM58601BWREG(SGM58601_STATUS,0x06); // 高位在前、使用缓冲
// SGM58601BWREG(SGM58601_STATUS,0x04); // 高位在前、不使用缓冲
SGM58601BWREG(SGM58601_MUX,0x08); // 初始化端口A0为‘+’,AINCOM位‘-’
SGM58601BWREG(SGM58601_ADCON,SGM58601_GAIN_64); // 放大倍数1
SGM58601BWREG(SGM58601_DRATE,SGM58601_DRATE_2000SPS); // 数据10sps
SGM58601BWREG(SGM58601_IO,0x00);
//*************自校准****************
// while(SGM58601_DRDY);
// SPI_CS2_ENABLE();
// SPI0_ReadWriteByte(SGM58601_CMD_SELFCAL);
// while(SGM58601_DRDY);
// SPI_CS2_DISABLE();
//**********************************
}
//读取单端AD值
signed int SGM58601AReadData(unsigned char channel) //A
{
unsigned int sum=0;
while(SGM58601_DRDY);//当SGM58601_DRDY为低时才能写寄存器
SGM58601AWREG(SGM58601_MUX,channel); //设置通道
SPI_CS1_ENABLE();
SPI0_ReadWriteByte(SGM58601_CMD_SYNC);
SPI0_ReadWriteByte(SGM58601_CMD_WAKEUP);
SPI0_ReadWriteByte(SGM58601_CMD_RDATA);
sum |= (SPI0_ReadWriteByte(0xff) << 16);
sum |= (SPI0_ReadWriteByte(0xff) << 8);
sum |= SPI0_ReadWriteByte(0xff);
SPI_CS1_DISABLE();
if (sum>0x7FFFFF) // if MSB=1,
{
sum -= 0x1000000; // do 2's complement
}
return sum;
}
signed int SGM58601BReadData(unsigned char channel) //B
{
unsigned int sum=0;
while(SGM58601_DRDY);//当SGM58601_DRDY为低时才能写寄存器
SGM58601BWREG(SGM58601_MUX,channel); //设置通道
SPI_CS2_ENABLE();
SPI0_ReadWriteByte(SGM58601_CMD_SYNC);
SPI0_ReadWriteByte(SGM58601_CMD_WAKEUP);
SPI0_ReadWriteByte(SGM58601_CMD_RDATA);
sum |= (SPI0_ReadWriteByte(0xff) << 16);
sum |= (SPI0_ReadWriteByte(0xff) << 8);
sum |= SPI0_ReadWriteByte(0xff);
SPI_CS2_DISABLE();
if (sum>0x7FFFFF) // if MSB=1,
{
sum -= 0x1000000; // do 2's complement
}
return sum;
}
int SGM58601_Read_SingleData(unsigned char channel)
{
return SGM58601AReadData( (channel << 4) | SGM58601_MUXN_AINCOM);
}
int SGM58601_Read_DiffData(void)
{
return SGM58601BReadData( SGM58601_MUXP_AIN0 | SGM58601_MUXN_AIN1);
}
复制代码
GD32_SGM58601.7z
2024-1-19 22:16 上传
点击文件名下载附件
202.25 KB, 下载次数: 12
作者:
人工置顶员
时间:
2024-1-20 15:06
顶一下
欢迎光临 (http://www.51hei.com/bbs/)
Powered by Discuz! X3.1