<<BMP280 compensation formula=include the mbed library with this snippet>>

1. include "mbed.h" Returns temperature in DegC, resolution is 0.01 DegC. Output value of “5123” equals 51.23 DegC. t_fine carries fine temperature as global value BMP280_S32_t t_fine; BMP280_S32_t bmp280_compensate_T_int32(BMP280_S32_t adc_T) { BMP280_S32_t var1, var2, T; var1 = ((((adc_T>>3) – ((BMP280_S32_t)dig_T1<<1))) * ((BMP280_S32_t)dig_T2)) >> 11; var2 = (((((adc_T>>4) – ((BMP280_S32_t)dig_T1)) * ((adc_T>>4) – ((BMP280_S32_t)dig_T1))) >> 12) * ((BMP280_S32_t)dig_T3)) >> 14; t_fine = var1 + var2; T = (t_fine * 5 + 128) >> 8; return T; } “”– Returns pressure in Pa as unsigned 32 bit integer in Q24.8 format (24 integer bits and 8 fractional bits). Output value of “24674867” represents 24674867/256 = 96386.2 Pa = 963.862 hPa BMP280_U32_t bmp280_compensate_P_int64(BMP280_S32_t adc_P) { BMP280_S64_t var1, var2, p; var1 = ((BMP280_S64_t)t_fine) – 128000; var2 = var1 * var1 * (BMP280_S64_t)dig_P6; var2 = var2 + ((var1*(BMP280_S64_t)dig_P5)<<17); var2 = var2 + (((BMP280_S64_t)dig_P4)<<35); var1 = ((var1 * var1 * (BMP280_S64_t)dig_P3)>>8) + ((var1 * (BMP280_S64_t)dig_P2)<<12); var1 = (((((BMP280_S64_t)1)<<47)+var1))*((BMP280_S64_t)dig_P1)>>33; if (var1 == 0) { return 0; avoid exception caused by division by zero } p = 1048576-adc_P; p = (((p<<31)-var2)*3125)/var1; var1 = (((BMP280_S64_t)dig_P9) * (p>>13) * (p>>13)) >> 25; var2 = (((BMP280_S64_t)dig_P8) * p) >> 19; p = ((p + var1 + var2) >> 8) + (((BMP280_S64_t)dig_P7)<<4); return (BMP280_U32_t)p; <</code>>/