SC60 SDM450 Android9.0 HP5806驱动
需求：实现在SC60 Android9.0的平台上，驱动HP5806，是现在APP端获取到温度和气压高度值！
解决方案：
JNI部分代码如下（hp5806_driver.tar.gz为在Android9.0下的驱动移植包；）：
typedef struct
{
int16_t C0;
int16_t C1;
int32_t C00;
int32_t C10;
int16_t C01;
int16_t C11;
int16_t C20;
int16_t C21;
int16_t C30;
uint32_t tmp_osr_scale_coeff;
uint32_t prs_osr_scale_coeff;
}hp5806_calib_data;
typedef struct{
uint8_tpressure;
uint8_ttemperature;
hp5806_calib_data calib_coeffs;
}hp5806_report_s;
static int hp5806_fd = -1;
#define KT 524288
#define KP 253952
void hp5806_convert(hp5806_report_s * rp,float * pressure,float *temp)
{
long press_raw;
long temp_raw;
long int temputer_valu = 0;
long int pressure_valu = 0;
long Traw;
long Praw;
doubleTraw_sc;
doublePraw_sc;
double temp_scaled;
float temp_final;
double press_scaled;
float press_final;
LOGE("pressure=0x%x,pressure=0x%x,pressure=0x%x,temperature=0x%x,temperature=0x%x,temperature=0x%x\r\n",rp->pressure,rp->pressure,rp->pressure,rp->temperature,rp->temperature,rp->temperature);
LOGE("calib.C0 =%d,C1 =%d,C00 =%d,C10 =%d,C01 =%d,C11 =%d,C20 =%d,C21 =%d,C30 =%d\r\n",rp->calib_coeffs.C0,rp->calib_coeffs.C1,rp->calib_coeffs.C00,rp->calib_coeffs.C10,rp->calib_coeffs.C01,rp->calib_coeffs.C11,rp->calib_coeffs.C20,rp->calib_coeffs.C21,rp->calib_coeffs.C30);
press_raw = (rp->pressure) + (rp->pressure<<8) + (rp->pressure <<16);
temp_raw= (rp->temperature) + (rp->temperature<<8) + (rp->temperature <<16);
LOGE("press_raw %ld temp_raw %ld\r\n",press_raw,temp_raw);
if(press_raw>8388607)
{
press_raw=press_raw-16777216;
}
Traw_sc=(double)temp_raw/KT;
Praw_sc=(double)press_raw/KP;
LOGE("Praw_sc %lf Traw_sc %lf\r\n",Praw_sc,Traw_sc);
temp_final=(float)rp->calib_coeffs.C0*0.5f + (float)rp->calib_coeffs.C1*Traw_sc;
LOGE("temp_final %f\r\n",temp_final);
press_final=rp->calib_coeffs.C00 + Praw_sc *(rp->calib_coeffs.C10 + Praw_sc *(rp->calib_coeffs.C20+ Praw_sc *rp->calib_coeffs.C30)) + Traw_sc*rp->calib_coeffs.C01 + Traw_sc *Praw_sc *(rp->calib_coeffs.C11+Praw_sc *rp->calib_coeffs.C21);
LOGE("press_final %f\r\n",press_final);
temputer_valu = (long int)(temp_final*1000);
pressure_valu = (long int)(press_final*1000);
LOGE("temputer_valu %ld pressure_valu %ld \r\n",temputer_valu,pressure_valu);
}
bool hp5806_open()
{
hp5806_fd = open("/dev/HP5806", O_RDONLY);
usleep(10000);
if(hp5806_fd < 0){
LOGE("Can not open dev %s!\n", "/dev/hp5806");
return false;
}
LOGE("open dev %s! success!\n", "/dev/hp5806");
return true;
}
bool hp5806_close()
{
int ret = 0;
ret = close(hp5806_fd);
return ret;
}
long nmh21_get_temp(void)
{
int ret;
long temputer_valu = 0,temp_raw;
doubleTraw_sc;
float temp_final;
hp5806_report_s report_hp5806;
hp5806_open();
ret = read(hp5806_fd,&report_hp5806,sizeof(report_hp5806));
if(ret < 0)
LOGE("read hp5806_fd fail!\n");
else{
//LOGE("report_hp5806.pressure 0x%x 0x%x 0x%x!\n",report_hp5806.pressure,report_hp5806.pressure,report_hp5806.pressure);
LOGE("report_hp5806.temperature 0x%x 0x%x 0x%x!\n",report_hp5806.temperature,report_hp5806.temperature,report_hp5806.temperature);
temp_raw= (report_hp5806.temperature) + (report_hp5806.temperature<<8) + (report_hp5806.temperature <<16);
if(temp_raw>8388607)
{
temp_raw=temp_raw-16777216;
}
Traw_sc=(double)temp_raw/KT;
temp_final=(float)report_hp5806.calib_coeffs.C0*0.5f + report_hp5806.calib_coeffs.C1*Traw_sc;
temputer_valu = (long)(temp_final * 1000);
LOGE("temp_raw=%ld , Traw_sc=%lf, temp_final=%f temputer_valu=%ld\r\n",temp_raw,Traw_sc,temp_final,temputer_valu);
}
hp5806_close();
return temputer_valu;
}
long nmh21_get_pressure(void)
{
int ret;
long pressure_valu = 0,press_raw,temp_raw;
doublePraw_sc,Traw_sc;
float press_final;
hp5806_report_s report_hp5806;
hp5806_open();
ret = read(hp5806_fd,&report_hp5806,sizeof(report_hp5806));
if(ret < 0)
LOGE("read hp5806_fd fail!\n");
else{
press_raw = (report_hp5806.pressure) + (report_hp5806.pressure<<8) + (report_hp5806.pressure <<16);
LOGE("report_hp5806.pressure 0x%x 0x%x 0x%x!\n",report_hp5806.pressure,report_hp5806.pressure,report_hp5806.pressure);
temp_raw= (report_hp5806.temperature) + (report_hp5806.temperature<<8) + (report_hp5806.temperature <<16);
LOGE("report_hp5806.temperature 0x%x 0x%x 0x%x!\n",report_hp5806.temperature,report_hp5806.temperature,report_hp5806.temperature);
if(temp_raw>8388607)
{
temp_raw=temp_raw-16777216;
}
Traw_sc=(double)temp_raw/KT;
if(press_raw>8388607)
{
press_raw=press_raw-16777216;
}
Praw_sc=(double)press_raw/KP;
press_final=report_hp5806.calib_coeffs.C00 + Praw_sc *(report_hp5806.calib_coeffs.C10 + Praw_sc *(report_hp5806.calib_coeffs.C20+ Praw_sc *report_hp5806.calib_coeffs.C30)) + Traw_sc*report_hp5806.calib_coeffs.C01 + Traw_sc *Praw_sc *(report_hp5806.calib_coeffs.C11+Praw_sc *report_hp5806.calib_coeffs.C21);
pressure_valu = (long)(press_final * 1000);
LOGE("temp_raw=%ld , Traw_sc=%lf, press_final=%f pressure_valu=%ld\r\n",temp_raw,Traw_sc,press_final,pressure_valu);
}
hp5806_close();
return pressure_valu;
}
float hp5806_altitude_convert(float Press, float Ref_P)
{
return 44330 * (1 - powf(((float)Press / (float)Ref_P),(1/5.255)));
}
HP206P demo和规格书
页:
[1]