Biorobotics_group_2
/
PWM_LED
Adjust the brightness of a LED using potmeter input and FastPWM output
main.cpp
- Committer:
- sjoerdbarts
- Date:
- 2016-10-07
- Revision:
- 1:db6539dc8ea9
- Parent:
- 0:fe2a62ab1017
File content as of revision 1:db6539dc8ea9:
#include "mbed.h" #define SERIAL_BAUD 115200 // baud rate for serial communication #include "FastPWM.h" // This program controlls the brightness of a LED using PWM with the potmeter as input // Serial connection with PC Serial pc(USBTX,USBRX); // Led FastPWM led(D7); // PotmeterIn AnalogIn pot(A0); // Initial duty value and period volatile float duty = 0.0; volatile float frequency_pwm = 100.0; const int Timeset_duty_cycle = 50; void set_dutycycle() { duty=pot.read(); pc.printf("\r\n Potvalue = %f \r\n",duty); led.write(duty/3); } int main() { // Set baud connection with PC pc.baud(SERIAL_BAUD); pc.printf("\r\n ***THERMONUCLEAR WARFARE COMMENCES*** \r\n"); // Make tickers and attach Ticker tick_set_brightness; tick_set_brightness.attach(set_dutycycle,1/Timeset_duty_cycle); // Set period of LED led.period(1.0/frequency_pwm); while(true){ }; }