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Hello world code for PCA9632 library. This demonstrates device class call and "LedPwmOut class API".
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 "PCA9632.h" PCA9632 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 ); } } }
main.cpp
- Committer:
- nxp_ip
- Date:
- 2015-03-04
- Revision:
- 0:71a4bafbcad2
- Child:
- 2:b8c6902f2ff7
File content as of revision 0:71a4bafbcad2:
#include "mbed.h" #include "PCA9632.h" PCA9632 led_cntlr( p28, p27, 0xC4 ); // SDA, SCL, Slave_address(option) LedPwmOut led( led_cntlr, L0 ); // for LED0 pin int main() { // // Here are two types of PWM control samples // (User can choose one of those interface to set the PWM.) // // 1st sample is using LedPwmOut API. // It provides similar interface like PwmOut of mbed-SDK // // 2nd sample is using PCA9632 class function. // the 'pwm()' function takes LED channel number and duty-ratio value // while ( 1 ) { // // 1st sample is using LedPwmOut API. // PWM control via LedPwmOut // for ( int i = 0; i < 3; i++ ) { for( float p = 0.0f; p < 1.0f; p += 0.1f ) { led = p; // Controls LED0 pin wait( 0.1 ); } } // // 2nd sample is using PCA9632 class function. // PWM control by device class function call // for ( int i = 0; i < 3; i++ ) { for( float p = 0.0f; p < 1.0f; p += 0.1f ) { led_cntlr.pwm( 1, p ); // Controls LED1 pin wait( 0.1 ); } } } }