58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
// WiringPi test program: Kernel char device interface / sysfs successor
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// Compile: gcc -Wall wiringpi_test1_device.c -o wiringpi_test1_device -lwiringPi
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#include "wpi_test.h"
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#include <stdlib.h>
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#include <signal.h>
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#include <string.h>
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#include <time.h>
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#include <sys/time.h>
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const int GPIO = 19;
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const int GPIOIN = 26;
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const int ToggleValue = 4;
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int main (void) {
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printf("WiringPi GPIO test program 1 (using GPIO%d (output) and GPIO%d (input))\n", GPIO, GPIOIN);
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printf(" testing digitalWrite, digitalRead and pullUpDnControl\n");
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if (wiringPiSetupGpio() == -1) {
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printf("wiringPiSetupGpio failed\n\n");
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exit(EXIT_FAILURE);
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}
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pinMode(GPIOIN, INPUT);
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pinMode(GPIO, OUTPUT);
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printf("toggle %d times ...\n", ToggleValue);
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for (int loop=1; loop<ToggleValue; loop++) {
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digitalWriteEx(GPIO, GPIOIN, LOW);
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delayMicroseconds(600000);
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digitalWriteEx(GPIO, GPIOIN, HIGH);
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delayMicroseconds(600000);
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}
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digitalWrite(GPIO, LOW);
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printf("\nWiringPi GPIO test program (using GPIO%d (input pull up/down) and GPIO%d (input))\n", GPIO, GPIOIN);
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pullUpDnControl (GPIO, PUD_UP);
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pinMode(GPIO, INPUT);
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delayMicroseconds(3000000);
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pullUpDnControl (GPIOIN, PUD_OFF);
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for (int loop=1; loop<ToggleValue; loop++) {
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pullUpDnControlEx (GPIO, GPIOIN, PUD_DOWN);
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delayMicroseconds(600000);
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pullUpDnControlEx (GPIO, GPIOIN, PUD_UP);
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delayMicroseconds(600000);
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}
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//Error wrong direction - only for fun
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digitalWrite(GPIO, LOW);
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return(EXIT_SUCCESS);
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}
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