InetrfaceProducts NXP / Mbed 2 deprecated PCA9956A_Hello

Hello world code for PCA9956A class library. The PCA9956A is a 24-channel Fm+ I2C-bus 57mA/20V constant current LED driver. This program shows its basic operation of PWM and current settings.

Dependencies:   PCA995xA mbed

Please refer to the component page for details

PCA9955B and PCA9956B are I²C-bus controlled 16-channel constant current LED driver optimized for dimming and blinking.

High-level API is available

A high-level API that can be used as the "PwmOut" of bed-SDK is available.
This API enables to make instances of each LED output pins and control PWM duty cycle by assignment.
Output current also controllable by API function.
For detail information, refer API document of LedPwmOutCC Class class which is included in PCA995xA class library.

#include "mbed.h"
#include "PCA9956A.h"

PCA9956A    led_cntlr( p28, p27, 0xC4 );  //  SDA, SCL, Slave_address(option)
LedPwmOutCC led( led_cntlr, L0 );

int main()
{
    while( 1 ) {
        for( float p = 0.0f; p < 1.0f; p += 0.1f ) {
            led     = p;
            wait( 0.1 );
        }
    }
}

main.cpp@1:fd208c007499, 2015-03-04 (annotated)

Committer:
nxp_ip
Date:
Wed Mar 04 10:30:26 2015 +0000
Revision:
1:fd208c007499
Parent:
0:11740e097e7b
Child:
2:9b700bf94085
Library updated

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nxp_ip 1:fd208c007499 1 #include "mbed.h"
nxp_ip 0:11740e097e7b 2
nxp_ip 1:fd208c007499 3 #include "PCA9956A.h"
nxp_ip 0:11740e097e7b 4 PCA9956A led_cntlr( p28, p27, 0x02 ); // SDA, SCL, Slave_address(option)
nxp_ip 0:11740e097e7b 5
nxp_ip 0:11740e097e7b 6 int main()
nxp_ip 0:11740e097e7b 7 {
nxp_ip 0:11740e097e7b 8 led_cntlr.current( ALLPORTS, 1.0 ); // Set all ports output current 100%
nxp_ip 0:11740e097e7b 9
nxp_ip 0:11740e097e7b 10 while(1) {
nxp_ip 0:11740e097e7b 11 for ( int port = 0; port < led_cntlr.number_of_ports(); port++ ) {
nxp_ip 0:11740e097e7b 12 for ( int i = 1; i <= 100; i++ ) {
nxp_ip 0:11740e097e7b 13 led_cntlr.pwm( port, (float)i / 100.0 );
nxp_ip 0:11740e097e7b 14 wait( 0.01 );
nxp_ip 0:11740e097e7b 15 }
nxp_ip 0:11740e097e7b 16 }
nxp_ip 0:11740e097e7b 17 led_cntlr.pwm( ALLPORTS, 0.0 ); // Set all ports output PWM 0%
nxp_ip 0:11740e097e7b 18 }
nxp_ip 0:11740e097e7b 19 }
nxp_ip 1:fd208c007499 20
nxp_ip 1:fd208c007499 21
nxp_ip 1:fd208c007499 22
nxp_ip 1:fd208c007499 23
nxp_ip 1:fd208c007499 24
nxp_ip 1:fd208c007499 25
nxp_ip 1:fd208c007499 26 #if 0 // Sample of using LedPwmOut API
nxp_ip 1:fd208c007499 27 #include "mbed.h"
nxp_ip 1:fd208c007499 28 #include "PCA9956A.h"
nxp_ip 1:fd208c007499 29
nxp_ip 1:fd208c007499 30 PCA9956A led_cntlr( p28, p27, 0x02 );
nxp_ip 1:fd208c007499 31 LedPwmOutCC leds[] = {
nxp_ip 1:fd208c007499 32 LedPwmOutCC( led_cntlr, L2 ),
nxp_ip 1:fd208c007499 33 LedPwmOutCC( led_cntlr, L5 ),
nxp_ip 1:fd208c007499 34 LedPwmOutCC( led_cntlr, L8 ),
nxp_ip 1:fd208c007499 35 LedPwmOutCC( led_cntlr, L11 ),
nxp_ip 1:fd208c007499 36 LedPwmOutCC( led_cntlr, L14 ),
nxp_ip 1:fd208c007499 37 LedPwmOutCC( led_cntlr, L17 ),
nxp_ip 1:fd208c007499 38 LedPwmOutCC( led_cntlr, L20 ),
nxp_ip 1:fd208c007499 39 LedPwmOutCC( led_cntlr, L23 ),
nxp_ip 1:fd208c007499 40
nxp_ip 1:fd208c007499 41 LedPwmOutCC( led_cntlr, L0 ),
nxp_ip 1:fd208c007499 42 LedPwmOutCC( led_cntlr, L3 ),
nxp_ip 1:fd208c007499 43 LedPwmOutCC( led_cntlr, L6 ),
nxp_ip 1:fd208c007499 44 LedPwmOutCC( led_cntlr, L9 ),
nxp_ip 1:fd208c007499 45 LedPwmOutCC( led_cntlr, L12 ),
nxp_ip 1:fd208c007499 46 LedPwmOutCC( led_cntlr, L15 ),
nxp_ip 1:fd208c007499 47 LedPwmOutCC( led_cntlr, L18 ),
nxp_ip 1:fd208c007499 48 LedPwmOutCC( led_cntlr, L21 ),
nxp_ip 1:fd208c007499 49
nxp_ip 1:fd208c007499 50 LedPwmOutCC( led_cntlr, L1 ),
nxp_ip 1:fd208c007499 51 LedPwmOutCC( led_cntlr, L4 ),
nxp_ip 1:fd208c007499 52 LedPwmOutCC( led_cntlr, L7 ),
nxp_ip 1:fd208c007499 53 LedPwmOutCC( led_cntlr, L10 ),
nxp_ip 1:fd208c007499 54 LedPwmOutCC( led_cntlr, L13 ),
nxp_ip 1:fd208c007499 55 LedPwmOutCC( led_cntlr, L16 ),
nxp_ip 1:fd208c007499 56 LedPwmOutCC( led_cntlr, L19 ),
nxp_ip 1:fd208c007499 57 LedPwmOutCC( led_cntlr, L22 ),
nxp_ip 1:fd208c007499 58
nxp_ip 1:fd208c007499 59 };
nxp_ip 1:fd208c007499 60
nxp_ip 1:fd208c007499 61 int main()
nxp_ip 1:fd208c007499 62 {
nxp_ip 1:fd208c007499 63 for ( int ch = 0; ch < 24; ch++ )
nxp_ip 1:fd208c007499 64 leds[ ch ] = 1.0;
nxp_ip 1:fd208c007499 65 for ( int ch = 0; ch < 24; ch++ )
nxp_ip 1:fd208c007499 66 leds[ ch ].current( 0.0 );
nxp_ip 1:fd208c007499 67
nxp_ip 1:fd208c007499 68 while(1) {
nxp_ip 1:fd208c007499 69 for ( int ch = 0; ch < 24; ch++ ) {
nxp_ip 1:fd208c007499 70 for ( float p = 0.0; p < 1.0; p += 0.01 ) {
nxp_ip 1:fd208c007499 71 // leds[ ch ] = p;
nxp_ip 1:fd208c007499 72 leds[ ch ].current( p );
nxp_ip 1:fd208c007499 73 wait( 0.01 );
nxp_ip 1:fd208c007499 74 }
nxp_ip 1:fd208c007499 75 }
nxp_ip 1:fd208c007499 76 for ( float c = 1.0; c > 0.0; c -= 0.01 ) {
nxp_ip 1:fd208c007499 77 for ( int ch = 0; ch < 24; ch++ ) {
nxp_ip 1:fd208c007499 78 leds[ ch ].current( c );
nxp_ip 1:fd208c007499 79
nxp_ip 1:fd208c007499 80 }
nxp_ip 1:fd208c007499 81 wait( 0.01 );
nxp_ip 1:fd208c007499 82 }
nxp_ip 1:fd208c007499 83 }
nxp_ip 1:fd208c007499 84 }
nxp_ip 1:fd208c007499 85 #endif