Tedd OKANO / Mbed 2 deprecated i2c_demo

demo program

Dependencies:   mbed

main.cpp@0:236c04f081b4, 2015-05-29 (annotated)

Committer:
okano
Date:
Fri May 29 06:20:17 2015 +0000
Revision:
0:236c04f081b4
initial version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
okano 0:236c04f081b4 1 #include "mbed.h"
okano 0:236c04f081b4 2
okano 0:236c04f081b4 3 I2C i2c( p28, p27 ); // SDA, SCL
okano 0:236c04f081b4 4
okano 0:236c04f081b4 5 int main() {
okano 0:236c04f081b4 6 char a[ 2 ];
okano 0:236c04f081b4 7
okano 0:236c04f081b4 8 a[ 0 ] = 0x08; // register address for write
okano 0:236c04f081b4 9 a[ 1 ] = 0x52; // writing data
okano 0:236c04f081b4 10
okano 0:236c04f081b4 11 char w[ 1 ];
okano 0:236c04f081b4 12 char r[ 1 ]; // buffer for read
okano 0:236c04f081b4 13
okano 0:236c04f081b4 14 w[ 0 ] = 0x08; // register address for read
okano 0:236c04f081b4 15
okano 0:236c04f081b4 16 while(1) {
okano 0:236c04f081b4 17 // writing
okano 0:236c04f081b4 18 i2c.write( 0x02, a, 2 );
okano 0:236c04f081b4 19 wait( 0.001 );
okano 0:236c04f081b4 20
okano 0:236c04f081b4 21 // reading
okano 0:236c04f081b4 22 i2c.write( 0x02, w, 1 );
okano 0:236c04f081b4 23 i2c.read( 0x02, r, 1 );
okano 0:236c04f081b4 24 wait( 0.003 );
okano 0:236c04f081b4 25
okano 0:236c04f081b4 26 printf( "register read : 0x%02X\r\n", r[ 0 ] );
okano 0:236c04f081b4 27 }
okano 0:236c04f081b4 28 }