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// WiringPi test program: Kernel char device interface / sysfs successor |
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// Compile: gcc -Wall wiringpi_test2_device.c -o wiringpi_test2_device -lwiringPi |
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#include <wiringPi.h> |
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#include <stdio.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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void CheckGPIO(int out) { |
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int in = digitalRead(GPIOIN); |
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int read = digitalRead(GPIO); |
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int pass = 0; |
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if (out==in && in==read) { |
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pass = 1; |
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} |
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printf("GPIO%d = %d (GPIO%d = %d) -> %s\n", GPIOIN, in, GPIO, read, pass ? "passed":"failed" ); |
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} |
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void digitalWriteEx(int pin, int mode) { |
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digitalWrite(pin, mode); |
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printf("out = %d ", mode); |
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delayMicroseconds(5000); |
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CheckGPIO(mode); |
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} |
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void pullUpDnControlEx (int pin ,int mode) { |
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pullUpDnControl (pin, mode); |
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int out = mode==PUD_UP ? 1:0; |
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printf("in = %4s ", mode==PUD_UP ? "up":"down"); |
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delayMicroseconds(5000); |
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CheckGPIO(out); |
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} |
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int main (void) { |
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printf("WiringPi GPIO test program 2 (using GPIO%d (output) and GPIO%d (input) via sys)\n", GPIO, GPIOIN); |
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printf(" testing pullUpDnControl and pinMode PM_OFF\n"); |
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if (wiringPiSetupSys() == -1) { |
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printf("wiringPiSetupGpioDevice 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("\nTest output\n"); |
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digitalWriteEx(GPIO, HIGH); |
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delayMicroseconds(600000); |
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digitalWriteEx(GPIO, LOW); |
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delayMicroseconds(600000); |
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printf("\nTest output off with pull up\n"); |
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pinMode(GPIO, OUTPUT); |
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digitalWriteEx(GPIO, LOW); |
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pullUpDnControl (GPIO, PUD_UP); |
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pinMode(GPIO, PM_OFF); |
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delayMicroseconds(600000); |
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printf("out = off "); |
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CheckGPIO(HIGH); |
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delayMicroseconds(600000); |
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printf("\nTest output off with pull down\n"); |
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pullUpDnControl (GPIO, PUD_DOWN); |
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pinMode(GPIO, PM_OFF); |
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delayMicroseconds(600000); |
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printf("out = off "); |
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CheckGPIO(LOW); |
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delayMicroseconds(600000); |
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return(EXIT_SUCCESS); |
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} |