Michael Baker / Mbed 2 deprecated I2C_Bus_Scanner

Program to scan I2C bus for device addresses

Dependencies:   mbed

main.cpp@0:545d57fc4eca, 2017-01-26 (annotated)

Committer:
michaelVisimid
Date:
Thu Jan 26 19:28:55 2017 +0000
Revision:
0:545d57fc4eca
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
michaelVisimid 0:545d57fc4eca 1 // Original program found here: http://playground.arduino.cc/Main/I2cScanner
michaelVisimid 0:545d57fc4eca 2 // Modified by Domen Ornik, 4.5.2015
michaelVisimid 0:545d57fc4eca 3
michaelVisimid 0:545d57fc4eca 4 #include "mbed.h"
michaelVisimid 0:545d57fc4eca 5
michaelVisimid 0:545d57fc4eca 6 I2C i2c(I2C_SDA , I2C_SCL );
michaelVisimid 0:545d57fc4eca 7
michaelVisimid 0:545d57fc4eca 8 int returnCode, address, numberOfDevices = 0;
michaelVisimid 0:545d57fc4eca 9 char outByte = 0xAA;
michaelVisimid 0:545d57fc4eca 10
michaelVisimid 0:545d57fc4eca 11 int main() {
michaelVisimid 0:545d57fc4eca 12 printf("\r\nI2C Bus Scanner\r\n");
michaelVisimid 0:545d57fc4eca 13 numberOfDevices = 0;
michaelVisimid 0:545d57fc4eca 14 for(address = 1; address < 127; address++ ){
michaelVisimid 0:545d57fc4eca 15 returnCode = i2c.write((address << 1),&outByte,1,0);
michaelVisimid 0:545d57fc4eca 16 if (returnCode == 0)
michaelVisimid 0:545d57fc4eca 17 {
michaelVisimid 0:545d57fc4eca 18 printf("I2C device found at address 0x%X\r\n", address);
michaelVisimid 0:545d57fc4eca 19 numberOfDevices++;
michaelVisimid 0:545d57fc4eca 20 }
michaelVisimid 0:545d57fc4eca 21
michaelVisimid 0:545d57fc4eca 22 }
michaelVisimid 0:545d57fc4eca 23 if (numberOfDevices == 0){
michaelVisimid 0:545d57fc4eca 24 printf("No I2C devices found\r\n");
michaelVisimid 0:545d57fc4eca 25 }
michaelVisimid 0:545d57fc4eca 26 else{
michaelVisimid 0:545d57fc4eca 27 printf("Number of devices: %d\r\n",numberOfDevices);
michaelVisimid 0:545d57fc4eca 28 }
michaelVisimid 0:545d57fc4eca 29
michaelVisimid 0:545d57fc4eca 30 }