mbed official
Hello World for I2C
mbed 2 and mbed OS 5
This is an mbed 2 example. For an mbed-os example, please see:
Revision 0:f76c26307f9a, committed 2013-02-14
- Comitter:
- mbed_official
- Date:
- Thu Feb 14 17:24:48 2013 +0000
- Commit message:
- I2C HelloWorld
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 |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Feb 14 17:24:48 2013 +0000
@@ -0,0 +1,25 @@
+#include "mbed.h"
+
+// Read temperature from LM75BD
+
+I2C i2c(p28, p27);
+
+const int addr = 0x90;
+
+int main() {
+ char cmd[2];
+ while (1) {
+ cmd[0] = 0x01;
+ cmd[1] = 0x00;
+ i2c.write(addr, cmd, 2);
+
+ wait(0.5);
+
+ cmd[0] = 0x00;
+ i2c.write(addr, cmd, 1);
+ i2c.read(addr, cmd, 2);
+
+ float tmp = (float((cmd[0]<<8)|cmd[1]) / 256.0);
+ printf("Temp = %.2f\n", tmp);
+ }
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Feb 14 17:24:48 2013 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/0954ebd79f59 \ No newline at end of file