TM_BMP180_Result_t Measure_BMP180(TM_BMP180_t* BMP180_Data, TM_BMP180_Oversampling_t Oversampling)
{
TM_BMP180_Result_t Result;
/* Start temperature conversion */
TM_BMP180_StartTemperature(BMP180_Data);
/* Wait delay in microseconds */
/* You can do other things here instead of delay */
osDelay(5);
/* Read temperature first */
TM_BMP180_ReadTemperature(BMP180_Data);
/* Start pressure conversion at ultra high resolution */
TM_BMP180_StartPressure(BMP180_Data, Oversampling);
/* Wait delay in microseconds */
/* You can do other things here instead of delay */
if (Oversampling == TM_BMP180_Oversampling_UltraLowPower)
osDelay(5);
else if (Oversampling == TM_BMP180_Oversampling_Standard)
osDelay(8);
else if (Oversampling == TM_BMP180_Oversampling_HighResolution)
osDelay(14);
else osDelay(26);
/* Read pressure value */
Result = TM_BMP180_ReadPressure(BMP180_Data);
return Result;
}
int main(void) {
char buffer[50];
/* Working structure */
TM_BMP180_t BMP180_Data;
/* Initialize system */
SystemInit();
/* Initialize delay */
TM_DELAY_Init();
/* Initialize USART1, 11500baud, TX: PB6 */
TM_USART_Init(USART1, TM_USART_PinsPack_2, 115200);
/* Initialize BMP180 pressure sensor */
if (TM_BMP180_Init(&BMP180_Data) == TM_BMP180_Result_Ok) {
/* Init OK */
TM_USART_Puts(USART1, "BMP180 configured and ready to use\n\n");
} else {
/* Device error */
TM_USART_Puts(USART1, "BMP180 error\n\n");
while (1);
}
/* Imagine, we are at 1000 meters above the sea */
/* And we read pressure of 95000 pascals */
/* Pressure right on the sea is */
sprintf(buffer, "Pressure right above the sea: %d pascals\n", TM_BMP180_GetPressureAtSeaLevel(95000, 1000));
TM_USART_Puts(USART1, buffer);
sprintf(buffer, "Data were calculated from pressure %d pascals at know altitude %d meters\n\n\n", 95000, 1000);
TM_USART_Puts(USART1, buffer);
while (1) {
/* Start temperature conversion */
TM_BMP180_StartTemperature(&BMP180_Data);
/* Wait delay in microseconds */
/* You can do other things here instead of delay */
Delay(BMP180_Data.Delay);
/* Read temperature first */
TM_BMP180_ReadTemperature(&BMP180_Data);
/* Start pressure conversion at ultra high resolution */
TM_BMP180_StartPressure(&BMP180_Data, TM_BMP180_Oversampling_UltraHighResolution);
/* Wait delay in microseconds */
/* You can do other things here instead of delay */
Delay(BMP180_Data.Delay);
/* Read pressure value */
TM_BMP180_ReadPressure(&BMP180_Data);
/* Format data and print to USART */
sprintf(buffer, "Temp: %2.3f degrees\nPressure: %6d Pascals\nAltitude at current pressure: %3.2f meters\n\n",
BMP180_Data.Temperature,
BMP180_Data.Pressure,
BMP180_Data.Altitude
);
/* Send to USART */
TM_USART_Puts(USART1, buffer);
/* Some delay */
Delayms(1000);
}
}
