Simon Ford
/
I2CU
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Revision 0:4f78cdfc99de, committed 2009-09-03
- Comitter:
- simon
- Date:
- Thu Sep 03 21:51:26 2009 +0000
- Commit message:
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 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);
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Thu Sep 03 21:51:26 2009 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/f63353af7be8