comparison include/GPIOcontrol.h @ 0:8a575ba3ab52

Initial commit.

+/*
+ * SimpleGPIO.h
+ *
+ * Copyright Derek Molloy, School of Electronic Engineering, Dublin City University
+ * www.derekmolloy.ie
+ *
+ * Based on Software by RidgeRun
+ * Copyright (c) 2011, RidgeRun
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    This product includes software developed by the RidgeRun.
+ * 4. Neither the name of the RidgeRun nor the
+ *    names of its contributors may be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RIDGERUN ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL RIDGERUN BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef SIMPLEGPIO_H_
+#define SIMPLEGPIO_H_
+
+ /****************************************************************
+ * Constants
+ ****************************************************************/
+
+#define SYSFS_GPIO_DIR "/sys/class/gpio"
+#define SYSFS_LED_DIR  "/sys/class/leds"
+#define POLL_TIMEOUT (3 * 1000) /* 3 seconds */
+#define MAX_BUF 128
+
+enum PIN_DIRECTION{
+	INPUT_PIN=0,
+	OUTPUT_PIN=1
+};
+
+enum PIN_VALUE{
+	LOW=0,
+	HIGH=1
+};
+
+/****************************************************************
+ * gpio_functions
+ ****************************************************************/
+int gpio_setup(unsigned int gpio, int out_flag);
+int gpio_export(unsigned int gpio);
+int gpio_unexport(unsigned int gpio);
+int gpio_set_dir(unsigned int gpio, int out_flag);
+int gpio_set_value(unsigned int gpio, int value);
+int gpio_get_value(unsigned int gpio, unsigned int *value);
+int gpio_set_edge(unsigned int gpio, char *edge);
+int gpio_fd_open(unsigned int gpio, int writeFlag);
+int gpio_fd_close(int fd);
+int gpio_write(int fd, int value);
+int gpio_read(int fd, unsigned int *value);
+int gpio_dismiss(int fd, unsigned int gpio);
+
+int led_set_trigger(unsigned int lednum, const char *trigger);
+
+#endif /* SIMPLEGPIO_H_ */