Simon Ford
/
Test24LC256
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Revision 0:ebb4c3fcf4a9, committed 2009-09-08
- Comitter:
- simon
- Date:
- Tue Sep 08 11:50:46 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 Tue Sep 08 11:50:46 2009 +0000
@@ -0,0 +1,47 @@
+// Test24LC256 hello world example
+// Copyright (c) 2009, sford
+// Released under the MIT License: http://mbed.org/license/mit
+//
+// Does some basic stuff with an 24LC256 to show it is working
+
+#include "mbed.h"
+
+I2C i2c(p28, p27); // sda, scl
+DigitalOut wp(p29); // write protect
+
+int main() {
+
+ wp = 0; // disable write protect
+
+ printf("Writing bytes 0-16\n");
+
+ char data[3];
+ for(int i=0; i<16; i++) {
+ data[0] = 0; // MSB address
+ data[1] = i; // LSB address
+ data[2] = i * 3; // data
+ if(i2c.write(0xA0, data, 3)) {
+ error("Write failed\n");
+ }
+ while(i2c.write(0xA0, NULL, 0)); // wait to complete
+ }
+
+ printf("Setting read pointer to 0\n");
+
+ data[0] = 0; // MSB address
+ data[1] = 0; // LSB address
+ if(i2c.write(0xA0, data, 2)) { // send address, but no data
+ error("Write failed\n");
+ }
+
+ printf("Reading back data bytes 0-16\n");
+
+ char response[1];
+ for(int i=0; i<16; i++) {
+ if(i2c.read(0xA0, response, 1)) {
+ error("Read failed\n");
+ }
+ printf("address %03d = 0x%02X\n", i, response[0]);
+ }
+
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue Sep 08 11:50:46 2009 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/f63353af7be8