Namaskron Chimpalee / Mbed OS I2C_Master

master

Diff: main.cpp

Revision:
0:f76c26307f9a
Child:
2:ab0e4b55d7da
--- /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);
+    }
+}
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