![](/media/cache/profiles/a53d1388191884b75c48bebb18709bfb.50x50_q85.jpg)
Hello world code for PCA9955A class library. The PCA9955A is a 16-channel Fm+ I2C-bus 57mA/20V constant current LED driver. This program shows its basic operation of PWM and current settings.
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.
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 ); } } }
Diff: PCA995xA.lib
- Revision:
- 5:e2ad761c8570
- Parent:
- 4:fa025bb69dab
diff -r fa025bb69dab -r e2ad761c8570 PCA995xA.lib --- a/PCA995xA.lib Thu Mar 19 10:50:03 2015 +0000 +++ b/PCA995xA.lib Thu Jun 16 23:39:18 2022 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/nxp_ip/code/PCA995xA/#cb07190e05e7 +http://mbed.org/users/nxp_ip/code/PCA995xA/#0d865f257fd2