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package com.diozero.internal.board;
/*-
* #%L
* Organisation: diozero
* Project: diozero - Core
* Filename: MmapGpioTester.java
*
* This file is part of the diozero project. More information about this project
* can be found at https://www.diozero.com/.
* %%
* Copyright (C) 2016 - 2021 diozero
* %%
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* #L%
*/
import org.tinylog.Logger;
import com.diozero.api.DeviceMode;
import com.diozero.api.GpioPullUpDown;
import com.diozero.internal.spi.MmapGpioInterface;
import com.diozero.internal.spi.NativeDeviceFactoryInterface;
import com.diozero.sbc.DeviceFactoryHelper;
public class MmapGpioTester {
public static void main(String[] args) {
if (args.length < 1) {
Logger.error("Usage: {} ", MmapGpioTester.class.getName());
return;
}
int gpio = Integer.parseInt(args[0]);
try (NativeDeviceFactoryInterface ndf = DeviceFactoryHelper.getNativeDeviceFactory();
MmapGpioInterface mmap_gpio = ndf.getBoardInfo().createMmapGpio()) {
if (mmap_gpio == null) {
Logger.error("Memory mapped GPIO not available");
return;
}
mmap_gpio.initialise();
DeviceMode start_mode = mmap_gpio.getMode(gpio);
boolean start_value = mmap_gpio.gpioRead(gpio);
Logger.info("Initial mode for GPIO {}: {}, value: ", Integer.valueOf(gpio), start_mode,
Boolean.valueOf(start_value));
DeviceMode new_mode = DeviceMode.DIGITAL_OUTPUT;
mmap_gpio.setMode(gpio, new_mode);
DeviceMode mode = mmap_gpio.getMode(gpio);
if (mode != new_mode) {
Logger.error("Failed to set GPIO {} mode to {}, detected mode: {}", Integer.valueOf(gpio), new_mode,
mode);
return;
}
boolean new_value = true;
mmap_gpio.gpioWrite(gpio, new_value);
boolean value = mmap_gpio.gpioRead(gpio);
if (value != new_value) {
Logger.error("Failed to set GPIO {} value to {}, detected value: {}", Integer.valueOf(gpio),
Boolean.valueOf(new_value), Boolean.valueOf(value));
return;
}
new_value = false;
mmap_gpio.gpioWrite(gpio, new_value);
value = mmap_gpio.gpioRead(gpio);
if (value != new_value) {
Logger.error("Failed to set GPIO {} value to {}, detected value: {}", Integer.valueOf(gpio),
Boolean.valueOf(new_value), Boolean.valueOf(value));
return;
}
new_mode = DeviceMode.DIGITAL_INPUT;
mmap_gpio.setMode(gpio, new_mode);
mode = mmap_gpio.getMode(gpio);
if (mode != new_mode) {
Logger.error("Failed to set GPIO {} mode to {}, detected mode: {}", Integer.valueOf(gpio), new_mode,
mode);
return;
}
GpioPullUpDown new_pud = GpioPullUpDown.PULL_DOWN;
mmap_gpio.setPullUpDown(gpio, new_pud);
value = mmap_gpio.gpioRead(gpio);
// Should be false assuming nothing is connected
if (value) {
Logger.error("Failed to set GPIO {} pud to {}", Integer.valueOf(gpio), new_pud);
return;
}
new_pud = GpioPullUpDown.PULL_UP;
mmap_gpio.setPullUpDown(gpio, new_pud);
value = mmap_gpio.gpioRead(gpio);
// Should be true assuming nothing is connected
if (!value) {
Logger.error("Failed to set GPIO {} pud to {}", Integer.valueOf(gpio), new_pud);
return;
}
Logger.info("Done - all tests past.");
mmap_gpio.setMode(gpio, start_mode);
if (start_mode == DeviceMode.DIGITAL_OUTPUT) {
mmap_gpio.gpioWrite(gpio, start_value);
}
}
}
}
