InetrfaceProducts NXP / Mbed 2 deprecated PCA9956A_simple

very simple sample code for PCA9956A (24 channel current control LED driver)

Dependencies:   mbed

Fork of PCA9955_simple by InetrfaceProducts NXP

main.cpp@1:2a3b314f4996, 2013-10-07 (annotated)

Committer:
nxp_ip
Date:
Mon Oct 07 04:03:57 2013 +0000
Revision:
1:2a3b314f4996
Parent:
0:3afedead559b 
modified to control PCA9956A (24 channel constant current LED controller)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nxp_ip 0:3afedead559b 1 /*
nxp_ip 0:3afedead559b 2 * very simple sample code for PCA9955 LPD driver
nxp_ip 0:3afedead559b 3 *
nxp_ip 0:3afedead559b 4 * 10-Oct-2012
nxp_ip 0:3afedead559b 5 * NXP Semiconductors - Interface Products
nxp_ip 0:3afedead559b 6 */
nxp_ip 0:3afedead559b 7
nxp_ip 0:3afedead559b 8 #include "mbed.h"
nxp_ip 0:3afedead559b 9
nxp_ip 1:2a3b314f4996 10 #define PCA9956A_ADDRESS 0x02
nxp_ip 1:2a3b314f4996 11 #define IREF_INIT 0x10
nxp_ip 0:3afedead559b 12
nxp_ip 0:3afedead559b 13 I2C i2c( p28, p27 );
nxp_ip 0:3afedead559b 14
nxp_ip 0:3afedead559b 15 char init_array[] = {
nxp_ip 0:3afedead559b 16 0x80, // Command
nxp_ip 0:3afedead559b 17 0x00, 0x05, // MODE1, MODE2
nxp_ip 1:2a3b314f4996 18 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0xAA, // LEDOUT[3:0]
nxp_ip 0:3afedead559b 19 0x80, 0x00, // GRPPWM, GRPFREQ
nxp_ip 0:3afedead559b 20 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // PWM[7:0]
nxp_ip 0:3afedead559b 21 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // PWM[15:8]
nxp_ip 1:2a3b314f4996 22 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // PWM[23:16]
nxp_ip 1:2a3b314f4996 23 IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, // IREF[7:0]
nxp_ip 1:2a3b314f4996 24 IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, // IREF[15:8]
nxp_ip 1:2a3b314f4996 25 IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, IREF_INIT, // IREF[23:16]
nxp_ip 0:3afedead559b 26 0x08 // OFFSET: 1uS offsets
nxp_ip 0:3afedead559b 27 };
nxp_ip 0:3afedead559b 28
nxp_ip 0:3afedead559b 29
nxp_ip 0:3afedead559b 30 int main()
nxp_ip 0:3afedead559b 31 {
nxp_ip 0:3afedead559b 32 char data[ 2 ];
nxp_ip 0:3afedead559b 33 int i = 0;
nxp_ip 0:3afedead559b 34
nxp_ip 1:2a3b314f4996 35 i2c.write( PCA9956A_ADDRESS, init_array, sizeof( init_array ) );
nxp_ip 0:3afedead559b 36
nxp_ip 0:3afedead559b 37 while ( 1 ) {
nxp_ip 1:2a3b314f4996 38 if ( !(i % (256 * 24)) ) {
nxp_ip 1:2a3b314f4996 39 data[ 0 ] = 0x3F;
nxp_ip 0:3afedead559b 40 data[ 1 ] = 0x00;
nxp_ip 1:2a3b314f4996 41 i2c.write( PCA9956A_ADDRESS, data, 2 );
nxp_ip 0:3afedead559b 42
nxp_ip 0:3afedead559b 43 } else {
nxp_ip 1:2a3b314f4996 44 data[ 0 ] = 0x0A + ((i >> 8) % 24);
nxp_ip 0:3afedead559b 45 data[ 1 ] = i & 0xFF;
nxp_ip 1:2a3b314f4996 46 i2c.write( PCA9956A_ADDRESS, data, 2 );
nxp_ip 0:3afedead559b 47 }
nxp_ip 0:3afedead559b 48 wait_ms( 1 );
nxp_ip 0:3afedead559b 49 i++;
nxp_ip 0:3afedead559b 50 }
nxp_ip 0:3afedead559b 51 }
nxp_ip 0:3afedead559b 52