Gitakichi Tokyo
秋月電子通商のBME280温湿度気圧モジュールにて高度を測定しました。 ボードはSTM32L152REを使いました。 meas attitude by BME280 Module of Akiduki and STM32L152RE. http://akizukidenshi.com/catalog/g/gK-09421/ http://www.st.com/content/st_com/ja/products/evaluation-tools/product-evaluation-tools/mcu-eval-tools/stm32-mcu-eval-tools/stm32-mcu-nucleo/nucleo-l152re.html
Fork of
BME280_Hello
by 
Toyomasa Watarai
秋月電子通商のBME280温湿度気圧モジュールにて高度を測定しました。 ボードはSTM32L152REを使いました。 Meas altitude by BME280 Module of Akiduki and STM32L152RE. http://akizukidenshi.com/catalog/g/gK-09421/ http://www.st.com/content/st_com/ja/products/evaluation-tools/product-evaluation-tools/mcu-eval-tools/stm32-mcu-eval-tools/stm32-mcu-nucleo/nucleo-l152re.html
Diff: main.cpp
- Revision:
- 4:36164592a7ea
- Parent:
- 0:2c9585cecfde
- Child:
- 5:41f74665164b
--- a/main.cpp Fri Jun 26 06:42:06 2015 +0000
+++ b/main.cpp Tue Jun 28 15:22:35 2016 +0000
@@ -1,7 +1,7 @@
#include "mbed.h"
#include "BME280.h"
-Serial pc(USBTX, USBRX);
+Serial pc(SERIAL_TX, SERIAL_RX);
#if defined(TARGET_LPC1768)
BME280 sensor(p28, p27);
@@ -9,10 +9,41 @@
BME280 sensor(I2C_SDA, I2C_SCL);
#endif
-int main() {
+static double t0,p0;
+
+void altitude_setup()
+{
+ t0 = sensor.getTemperature();
+ p0 = sensor.getPressure();
+
+}
+
+double altitude_calc()
+{
+ double altitude;
+
+ altitude = ((pow( p0 / sensor.getPressure() , 1 / 5.257) - 1) * (t0 + 273.15) ) / 0.0065;
+
+ return altitude;
+}
+
+
+int main()
+{
+
+ float altitude;
+ altitude_setup();
+
+
while(1) {
- pc.printf("%2.2f degC, %04.2f hPa, %2.2f %%\n", sensor.getTemperature(), sensor.getPressure(), sensor.getHumidity());
- wait(1);
+
+ altitude = altitude_calc();
+
+ pc.printf("%.1nlf\n\r",altitude);
+ pc.printf("%2.2f degC, %04.2f hPa, %2.2f %%\n\r", sensor.getTemperature(), sensor.getPressure(), sensor.getHumidity());
+
+ wait(0.2);
+
}
}