mbed official / Mbed 2 deprecated I2C_HelloWorld_Mbed

Hello World for I2C

Dependencies:   mbed

mbed 2 and mbed OS 5

This is an mbed 2 example. For an mbed-os example, please see:

Import programI2C_HelloWorld

I2C Hello World, I2C Example

Last commit 23 Jun 2017 by mbed_example

main.cpp

Committer:
mbed_official
Date:
2013-02-14
Revision:
0:f76c26307f9a

File content as of revision 0:f76c26307f9a:

#include "mbed.h"
 
// Read temperature from LM75BD

I2C i2c(p28, p27);

const int addr = 0x90;

int main() {
    char cmd[2];
    while (1) {
        cmd[0] = 0x01;
        cmd[1] = 0x00;
        i2c.write(addr, cmd, 2);
 
        wait(0.5);
 
        cmd[0] = 0x00;
        i2c.write(addr, cmd, 1);
        i2c.read(addr, cmd, 2);
 
        float tmp = (float((cmd[0]<<8)|cmd[1]) / 256.0);
        printf("Temp = %.2f\n", tmp);
    }
}