Diff: main.cpp

Revision:

0:4241a76032ad

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Oct 09 09:50:19 2017 +0000
@@ -0,0 +1,30 @@
+//Credit to Paul Staron. https://os.mbed.com/questions/6129/I2C-Not-Working/
+
+#include "mbed.h"
+
+#define I2C_SDA PF_0
+#define I2C_SCL PF_1
+ 
+Serial pc(USBTX, USBRX);
+ 
+I2C i2c(I2C_SDA, I2C_SCL); // I2C device sda, scl
+ 
+ 
+int main() {
+    i2c.frequency(10000); // set required i2c frequency
+    
+    pc.printf("I2C Searching!\n\n");
+    pc.printf("Starting....\n\n");    
+    
+    while (1) {
+        int count = 0;
+        for (int address=0; address<256; address+=2) {
+            if (!i2c.write(address, NULL, 0)) { // 0 returned is ok                
+                pc.printf("I2C address 0x%02X\n", address);
+                count++;
+            }
+        }        
+        pc.printf("%d devices found\n\n\n", count);
+        wait(2);       
+    }
+}
\ No newline at end of file