Simon Ford
/
Test24LC256
main.cpp
- Committer:
- simon
- Date:
- 2009-09-08
- Revision:
- 0:ebb4c3fcf4a9
File content as of revision 0:ebb4c3fcf4a9:
// 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]); } }