Steve Mylroie
MBed 5 version of BME280 test verify a BME280 can be reset via the I2C Bus
Revision 0:8ffd97155ff2, committed 2017-04-14
- Comitter:
- Roietronics
- Date:
- Fri Apr 14 02:03:45 2017 +0000
- Commit message:
- Update to MBED OS 5.4
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
diff -r 000000000000 -r 8ffd97155ff2 main.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Fri Apr 14 02:03:45 2017 +0000
@@ -0,0 +1,43 @@
+#include "mbed.h"
+
+I2C i2c(I2C_SDA , I2C_SCL );
+Serial debug(USBTX, USBRX);
+
+int main() {
+ char buffer[2];
+ buffer[1] = 0xE0;
+ buffer[0] = 0x86;
+ int count = 2;
+ int address = 0x77;
+ int error;
+ // int i2c_frequency = 200 * 1000;
+ int i2c_frequency = 100 * 1000;
+ debug.printf("\nI2C BME280 Rest Test");
+
+ i2c.frequency(i2c_frequency);
+
+ i2c.start();
+ error = i2c.write(address << 1); //We shift it left because mbed takes in 8 bit addreses
+ i2c.stop();
+ if (error == 1)
+ {
+ debug.printf("\nI2C device found at address 0x%X", address);
+ }
+ else
+ {
+ debug.printf("\nDevice at IC address Ox%X, not responding", address);
+ }
+
+ i2c.start();
+ error = i2c.write(address << 1, buffer, count); //We shift it left because mbed takes in 8 bit addreses
+ i2c.stop();
+ if (error == 1)
+ {
+ debug.printf("\nBME280 reset request send success");
+ }
+ else
+ {
+ debug.printf("\nBME280 reset request send failed Error Code: %d", error);
+ }
+ debug.printf("\ndone\n");
+}
diff -r 000000000000 -r 8ffd97155ff2 mbed.bld --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Fri Apr 14 02:03:45 2017 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/252557024ec3 \ No newline at end of file