Lab version
Fork of Task326 by
main.cpp
- Committer:
- noutram
- Date:
- 2016-03-09
- Revision:
- 0:57de85b71119
- Child:
- 2:a5a574cd9474
File content as of revision 0:57de85b71119:
#include "mbed.h" //A slight improvement - however, the pressing of the switch still registers //spurious falling edges! void sw1TimeOutHandler(); void sw1FallingEdge(); #define EDGE_RISEN 1 #define EDGE_FALLEN 0 //Global Objects DigitalOut red_led(D7); DigitalOut green_led(D5); InterruptIn sw1(D4); InterruptIn sw2(D3); Timeout sw1TimeOut; //Used to prevent switch bounce //Interrupt service routine for handling the timeout void sw1TimeOutHandler() { sw1TimeOut.detach(); //Stop the timeout counter firing sw1.fall(&sw1FallingEdge); //Now wait for a falling edge } //Interrupt service routive for SW1 falling edge (release) void sw1FallingEdge() { sw1.fall(NULL); //Disable this interrupt red_led = !red_led; //Toggle LED sw1TimeOut.attach(&sw1TimeOutHandler, 0.2); //Start timeout counter } //Main - only has to initialise and sleep int main() { //Initial logging message puts("START"); //Initial state red_led = 0; //Set RED LED to OFF green_led = 1; //Configure interrupts, wait for first rising edge sw1.fall(&sw1FallingEdge); //Main Polling Loop while (true) { //Put CPU back to sleep sleep(); //You can ONLY reach this point if an ISR wakes the CPU puts("ISR just woke the MPU"); } //end while }