94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
#include "hp203b.h"
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#include "i2c.h"
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#include "pdebug.h"
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#include "assertions.h"
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#include "filter.h"
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#include "cmsis_os.h"
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uint8_t hp20X_SOFT_RST = 0x06; //软复位
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uint8_t hp20X_READ_P = 0x30; //压力
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uint8_t hp20X_READ_A = 0x31; //高度
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uint8_t hp20X_READ_T = 0x32; //温度
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uint8_t hp20X_READ_PT = 0x10; //温度压力
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uint8_t hp20X_READ_AT = 0x11; //温度海拔
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/****************************
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*名称：HP203_soft_reset
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*功能：对hp203发送软复位指令
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*参数：无
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*返回：无
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*****************************/
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void HP203_soft_reset(void)
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{
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HAL_I2C_Master_Transmit(&hi2c3, HP20X_ADDRESSCMD, &hp20X_SOFT_RST, 1, 0xffff);//0xec,0x06----进行软件复位
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osDelay(30); //延时20MS thread误差+10
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}
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/****************************
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*名称：Hp203bReadPressureTemperature
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*功能：获取气压、海拔、温度数据
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*参数： Press--气压值
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* Altitude--海拔
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* Temp--温度
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*返回：无
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*****************************/
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void Hp203bReadPressureTemperature(double *Hp203bPressure,double *Hp203bAltitude,double *Hp203bTemp)
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{
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uint8_t Osr_Cfg = HP20X_CONVERT_OSR1024; //0x08
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uint8_t DataBuf[6];
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long Hp203b_Temp;
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long Hp203b_Pressure;
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long Hp203b_Altitude;
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uint8_t status = 0xFF;
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uint8_t command = HP20X_WR_CONVERT_CMD | Osr_Cfg;
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status = HAL_I2C_Master_Transmit(&hi2c3, HP20X_ADDRESSCMD, &command, 1, 0xffff);
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// while(status != HAL_OK){}
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if(HAL_I2C_Master_Transmit(&hi2c3, HP20X_ADDRESSCMD, &command, 1, 0xffff) == HAL_OK) //0x40 | 0x08 = 0x48----010: fixed; 010: OSR = 1024; 00: sensor pressure and temperature channel;
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{
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osDelay(74); //延时64MS 具体可以根据OSR值调整 thread误差+10
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HAL_I2C_Master_Transmit(&hi2c3, HP20X_ADDRESSCMD, &hp20X_READ_PT, 1, 0xffff); //命令：0x10----读取温度和压力数据
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HAL_I2C_Master_Receive(&hi2c3, HP20X_ADDRESSCMD, DataBuf, 6, 0xffff); //读取6个字节数据：3个字节的温度数据和3个字节的压力数据
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Hp203b_Temp = DataBuf[0]; //将3个字节的温度数据整合成24位的温度数据
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Hp203b_Temp <<= 8;
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Hp203b_Temp |= DataBuf[1];
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Hp203b_Temp <<= 8;
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Hp203b_Temp |= DataBuf[2];
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if(Hp203b_Temp > 0x7FFFFF) //判断是否负值
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Hp203b_Temp = Hp203b_Temp - 16777216;
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*Hp203bTemp = (double)Hp203b_Temp / 100; //计算温度数据
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Hp203b_Pressure = DataBuf[3]; //将3个字节的压力数据整合成24位的压力数据
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Hp203b_Pressure <<= 8;
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Hp203b_Pressure |= DataBuf[4];
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Hp203b_Pressure <<= 8;
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Hp203b_Pressure |= DataBuf[5];
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*Hp203bPressure = (double)Hp203b_Pressure / 100; //计算压力数据
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HAL_I2C_Master_Transmit(&hi2c3, HP20X_ADDRESSCMD, &hp20X_READ_A, 1, 0xffff); //命令：0x31----读取高度数据
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HAL_I2C_Master_Receive(&hi2c3, HP20X_ADDRESSCMD, DataBuf, 3, 0xffff); //读取3个字节数据：3个字节的高度数据
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Hp203b_Altitude = DataBuf[0]; //将3个字节的高度数据整合成24位的高度数据
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Hp203b_Altitude <<= 8;
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Hp203b_Altitude |= DataBuf[1];
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Hp203b_Altitude <<= 8;
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Hp203b_Altitude |= DataBuf[2];
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if(Hp203b_Altitude > 0x7FFFFF) //判断是否负值
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Hp203b_Altitude = Hp203b_Altitude - 16777216;
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*Hp203bAltitude = (double)Hp203b_Altitude / 100; //计算高度数据
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}
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}
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