Diff: main.cpp

Revision:

0:4f78cdfc99de

Child:

1:1cdd12a4efb2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Sep 03 21:51:26 2009 +0000
@@ -0,0 +1,25 @@
+// I2CU - Search for devices on an I2C bus
+// Copyright (c) 2009, sford
+// Released under the MIT License: http://mbed.org/license/mit
+//
+// Goes through each device address, seeing if it gets a response
+//  - for every device if finds, it prints the 8-bit address
+//  - if the program hangs, the bus isn't working (check pull-ups etc)
+//  - if it doesn't find your device, check power/bus wiring etc
+ 
+#include "mbed.h"
+
+I2C i2c(p9, p10); // sda, scl
+
+int main() {
+    printf("I2CU! Searching for I2C devices...\n");
+
+    int count = 0;
+    for (int address=0; address<256; address+=2) {
+        if (!i2c.write(address, NULL, 0)) { // 0 returned is ok
+            printf(" - I2C device found at address 0x%02X\n", address);
+            count++;
+        }
+    }
+    printf("%d devices found\n", count);
+}