![](/media/cache/profiles/a53d1388191884b75c48bebb18709bfb.50x50_q85.jpg)
Hello world code for PCA9626 class library. The PCA9626 is a 24-channel Fm+ I2C-bus 100mA/40 V LED driver. This program shows its basic operation of PWM output.
Please refer to the component page for details
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.
For detail information, refer API document of LedPwmOut Class
class which is included in PCA962xA class library.
#include "mbed.h" #include "PCA9626.h" PCA9626 led_cntlr( p28, p27, 0xC4 ); // SDA, SCL, Slave_address(option) LedPwmOut led( led_cntlr, L0 ); int main() { while( 1 ) { for( float p = 0.0f; p < 1.0f; p += 0.1f ) { led = p; wait( 0.1 ); } } }
Diff: main.cpp
- Revision:
- 3:5625ea2d9be8
- Parent:
- 2:1feea0f8e521
--- a/main.cpp Wed Mar 04 08:29:33 2015 +0000 +++ b/main.cpp Thu Mar 19 10:09:22 2015 +0000 @@ -1,69 +1,28 @@ -#if 0 #include "mbed.h" +#include "PCA9626.h" -#include "PCA9626.h" -PCA9626 led_cntlr( p28, p27, 0x3E ); // SDA, SCL, Slave_address(option) +PCA9626 led_cntlr( p28, p27, 0x3E ); // SDA, SCL, Slave_address(option) +LedPwmOut led0( led_cntlr, L0 ); // Instance for LED0 pin +LedPwmOut led1( led_cntlr, L1 ); // Instance for LED1 pin +LedPwmOut led2( led_cntlr, L2 ); // Instance for LED2 pin int main() { while(1) { - for ( int port = 0; port < led_cntlr.number_of_ports(); port++ ) { - for ( int i = 1; i <= 100; i++ ) { - led_cntlr.pwm( port, (float)i / 100.0 ); - wait( 0.01 ); - } + + for ( float p = 1.0; p >= 0.0; p -= 0.01 ) { + led0 = p; // Set LED0 output PWM dutycycle as 'p' + wait( 0.01 ); } - led_cntlr.pwm( ALLPORTS, 0.0 ); - } -} -#endif - - - -#if 1 // Sample of using LedPwmOut API -#include "mbed.h" -#include "PCA9626.h" -#include "PCA9622.h" -#include "PCA9624.h" - -PCA9626 led_cntlr( p28, p27, 0x3E ); // SDA, SCL, Slave_address(option) - -LedPwmOut leds[] = { - LedPwmOut( led_cntlr, L13 ), - LedPwmOut( led_cntlr, L14 ), - LedPwmOut( led_cntlr, L15 ), - LedPwmOut( led_cntlr, L16 ), - LedPwmOut( led_cntlr, L17 ), - LedPwmOut( led_cntlr, L18 ), - LedPwmOut( led_cntlr, L19 ), - LedPwmOut( led_cntlr, L20 ), - LedPwmOut( led_cntlr, L21 ), - LedPwmOut( led_cntlr, L22 ), - LedPwmOut( led_cntlr, L23 ), - LedPwmOut( led_cntlr, L0 ), - LedPwmOut( led_cntlr, L1 ), - LedPwmOut( led_cntlr, L2 ), - LedPwmOut( led_cntlr, L3 ), - LedPwmOut( led_cntlr, L4 ), - LedPwmOut( led_cntlr, L5 ), - LedPwmOut( led_cntlr, L6 ), - LedPwmOut( led_cntlr, L7 ), - LedPwmOut( led_cntlr, L8 ), - LedPwmOut( led_cntlr, L9 ), - LedPwmOut( led_cntlr, L10 ), - LedPwmOut( led_cntlr, L11 ), - LedPwmOut( led_cntlr, L12 ), -}; - -int main() -{ - while(1) { - for ( int ch = 0; ch < 24; ch++ ) { - for ( float p = 0.0; p < 1.0; p += 0.01 ) { - leds[ ch ] = p; - wait( 0.01 ); - } + + for ( float p = 1.0; p >= 0.0; p -= 0.01 ) { + led1 = p; // Set LED1 output PWM dutycycle as 'p' + wait( 0.01 ); + } + + for ( float p = 1.0; p >= 0.0; p -= 0.01 ) { + led2 = p; // Set LED2 output PWM dutycycle as 'p' + wait( 0.01 ); } } } -#endif \ No newline at end of file