Mathieu Moneyron
/
projetS1
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Dependencies: HP206C mbed HMC5883L DHT DS1820
Diff: altitude.cpp
- Revision:
- 49:b1ac7ebb715f
- Parent:
- 15:591f765c620d
- Child:
- 66:cbfcea17a3c5
diff -r 824fda6804f1 -r b1ac7ebb715f altitude.cpp
--- a/altitude.cpp Tue Oct 02 13:51:25 2018 +0000
+++ b/altitude.cpp Mon Oct 08 08:44:16 2018 +0000
@@ -1,2 +1,22 @@
#include "mbed.h"
+#include "config.h"
+unsigned long ReadData3byte(I2C *hp20x) {
+ unsigned long TempData = 0;
+ char tmpArray[3];
+ hp20x->read(HP20X_I2C_DEV_ID, tmpArray, 3);
+ /* MSB */
+ TempData = tmpArray[0]<<16 | tmpArray[1]<<8 | tmpArray[2];
+ if(TempData&0x800000)
+ {
+ TempData|=0xff000000;
+ }
+ return TempData;
+}
+
+unsigned long readAltitude(I2C *hp20x) {
+ char cmd = 0x31;
+ hp20x->write(HP20X_I2C_DEV_ID, &cmd, 1);
+ unsigned long altitude = ReadData3byte(hp20x);
+ return altitude;
+}
\ No newline at end of file
