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PinDetect lib limits ???
Topic last updated 02 Jan 2012, by 
Theo Ekelmans.
6
replies
Theo Ekelmans.
6
replies
Hi Guys,
I've used the PinDetect (and InterruptIn) lib to attach 14 key's to debounce, and even though the MBED compiler accepts this setup; It hangs during runtime. If i fiddle with setSampleFrequency en SampleCounts, it sort of works. But if i set all setSampleFrequency to 20.... the MBED dies @ runtime.
Is there a limit to how many Interrups i can setup? Or is it related to some limit in the MBED?
I just want to be able to read 14 Digital (debounced) inputs, and transmit a change event (key up and key down) using UDP.... How hard can that be???
Snifff.... and i was so close to get my mbed project working.
Theo :)
#include "mbed.h" #include "PinDetect.h" #define ON 1 #define OFF 0 long LoopCount = 0, PollCount = 0; PinDetect buttonA1(p11); PinDetect buttonA2(p12); PinDetect buttonA3(p13); PinDetect buttonA4(p14); PinDetect buttonB1(p15); PinDetect buttonB2(p16); PinDetect buttonB3(p17); PinDetect buttonB4(p18); PinDetect buttonC1(p21); PinDetect buttonC2(p22); PinDetect buttonC3(p23); PinDetect buttonC4(p24); PinDetect buttonD1(p19); PinDetect buttonD2(p20); DigitalOut led1(LED1); DigitalOut led2(LED2); DigitalOut led3(LED3); DigitalOut led4(LED4); Serial lcd(p9, p10); // tx, rx Serial usbUART ( USBTX, USBRX ); void keyPressedA1( void ) { usbUART.printf("F");lcd.printf("F");} void keyPressedA2( void ) { usbUART.printf("G");lcd.printf("G");} void keyPressedA3( void ) { usbUART.printf("H");lcd.printf("H");} void keyPressedA4( void ) { usbUART.printf("I");lcd.printf("I");} void keyPressedB1( void ) { usbUART.printf("A");lcd.printf("A");} void keyPressedB2( void ) { usbUART.printf("B");lcd.printf("B");} void keyPressedB3( void ) { usbUART.printf("C");lcd.printf("C");} void keyPressedB4( void ) { usbUART.printf("D");lcd.printf("D");} void keyReleasedB1( void ) { usbUART.printf("a");lcd.printf("a");} void keyReleasedB2( void ) { usbUART.printf("b");lcd.printf("b");} void keyReleasedB3( void ) { usbUART.printf("c");lcd.printf("c");} void keyReleasedB4( void ) { usbUART.printf("d");lcd.printf("d");} void keyPressedC1( void ) { usbUART.printf("L");lcd.printf("L");} void keyPressedC2( void ) { usbUART.printf("M");lcd.printf("M");} void keyPressedC3( void ) { usbUART.printf("N");lcd.printf("O");} void keyPressedC4( void ) { usbUART.printf("K");lcd.printf("P");} void keyPressedD1( void ) { usbUART.printf("Q");lcd.printf("Q");} void keyPressedD2( void ) { usbUART.printf("P");lcd.printf("R");} void InitButtons(void) { //Examples //button30.mode( PullDown ); //Button is attached to Vin //button30.attach_asserted( &keyPressed30 ); //Key pressed //button30.attach_deasserted( &keyReleased30 ); //Key released //button30.setSampleFrequency(); // Defaults to 20ms, starts the actual sampling //button30.setSamplesTillAssert( 10 ); // This would mean 10 * 20ms debounce time = 200ms. //button30.setSamplesTillHeld( 200 ); // This would mean 200 * 20ms debounce time = 2seconds. //button30.attach_asserted_held( &keyPressedHeld ); //button30.attach_deasserted_held( &keyReleasedHeld ); led1 = ON; wait(0.5); buttonA1.mode(PullDown); //Button is attached to Vin buttonA1.attach_asserted(&keyPressedA1); //Key pressed buttonA1.setSamplesTillAssert( 5 ); buttonA1.setSampleFrequency(55); //Starts the actual sampling buttonA2.mode(PullDown); //Button is attached to Vin buttonA2.attach_asserted(&keyPressedA2); //Key pressed buttonA2.setSamplesTillAssert( 5 ); buttonA2.setSampleFrequency(55); //Starts the actual sampling buttonA3.mode(PullDown); //Button is attached to Vin buttonA3.attach_asserted(&keyPressedA3); //Key pressed buttonA3.setSamplesTillAssert( 5 ); buttonA3.setSampleFrequency(55); //Starts the actual sampling buttonA4.mode(PullDown); //Button is attached to Vin buttonA4.attach_asserted(&keyPressedA4); //Key pressed buttonA4.setSamplesTillAssert( 5 ); buttonA4.setSampleFrequency(55); //Starts the actual sampling led2 = ON; wait(0.5); buttonB1.mode(PullDown); //Button is attached to Vin buttonB1.attach_asserted(&keyPressedB1); //Key pressed buttonB1.attach_deasserted(&keyReleasedB1); //Key released buttonB1.setSamplesTillAssert( 5 ); buttonB1.setSampleFrequency(55); //Starts the actual sampling buttonB2.mode(PullDown); //Button is attached to Vin buttonB2.attach_asserted(&keyPressedB2); //Key pressed buttonB2.attach_deasserted(&keyReleasedB2); //Key released buttonB2.setSamplesTillAssert( 5 ); buttonB2.setSampleFrequency(55); //Starts the actual sampling buttonB3.mode(PullDown); //Button is attached to Vin buttonB3.attach_asserted(&keyPressedB3); //Key pressed buttonB3.attach_deasserted(&keyReleasedB3); //Key released buttonB3.setSamplesTillAssert( 5 ); buttonB3.setSampleFrequency(55); //Starts the actual sampling buttonB4.mode(PullDown); //Button is attached to Vin buttonB4.attach_asserted(&keyPressedB4); //Key pressed buttonB4.attach_deasserted(&keyReleasedB4); //Key released buttonB4.setSamplesTillAssert( 5 ); buttonB4.setSampleFrequency(55); //Starts the actual sampling led3 = ON; wait(0.5); buttonC1.mode(PullDown); //Button is attached to Vin buttonC1.attach_asserted(&keyPressedC1); //Key pressed buttonC1.setSamplesTillAssert( 5 ); buttonC1.setSampleFrequency(55); //Starts the actual sampling buttonC2.mode(PullDown); //Button is attached to Vin buttonC2.attach_asserted(&keyPressedC2); //Key pressed buttonC2.setSamplesTillAssert( 5 ); buttonC2.setSampleFrequency(55); //Starts the actual sampling buttonC3.mode(PullDown); //Button is attached to Vin buttonC3.attach_asserted(&keyPressedC3); //Key pressed buttonC3.setSamplesTillAssert( 5 ); buttonC3.setSampleFrequency(55); //Starts the actual sampling buttonC4.mode(PullDown); //Button is attached to Vin buttonC4.attach_asserted(&keyPressedC4); //Key pressed buttonC4.setSamplesTillAssert( 5 ); buttonC4.setSampleFrequency(55); //Starts the actual sampling led4 = ON; wait(0.5); buttonD1.mode(PullDown); //Button is attached to Vin buttonD1.attach_asserted(&keyPressedD1); //Key pressed buttonD1.setSamplesTillAssert( 5 ); buttonD1.setSampleFrequency(55); //Starts the actual sampling buttonD2.mode(PullDown); //Button is attached to Vin buttonD2.attach_asserted(&keyPressedD2); //Key pressed buttonD2.setSamplesTillAssert( 5 ); buttonD2.setSampleFrequency(55); //Starts the actual sampling //Wait timers below stop working wait(0.5); led4 = OFF; wait(0.2); led3 = OFF; wait(0.2); led2 = OFF; wait(0.2); led1 = OFF; } int main() { lcd.baud(19200); usbUART.baud( 115200 ); usbUART.printf("UDP Tester starting...\r\n"); LoopCount = 0; PollCount = 0; InitButtons(); PollCount = 0; while (1) { PollCount ++; if ( PollCount % 25000 == 0 ) {led1 = !led1;} if ( PollCount % 50000 == 0 ) {led2 = !led2;} if ( PollCount % 75000 == 0 ) {led3 = !led3;} if ( PollCount % 100000 == 0 ) {led4 = !led4;} if ( PollCount % 1000000 == 0 ) { PollCount = 0; LoopCount ++; lcd.printf("LoopCount= %dM\n",LoopCount); } } }