#include <stdio.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <string.h>
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#include <termios.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <QDebug>
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#include "gpio_driver.h"
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#define RET_SUCCESS 0
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#define RET_FAILED -1
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/* ioctl cmd */
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#define IOCTL_GPIO_LEVEL_GET _IOW('Q', 0x02, int) //get gpio state
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#define IOCTL_GPIO_LEVEL_SET _IOR('Q', 0x03, int) //set gpio output state
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#define IOCTL_GPIO_DIR_INPUT_SET _IOW('Q', 0x04, int) //set gpio as a input
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#define DEV_GPIO "/dev/qiyang_imx6_gpio"
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int gpio_set_level(int index,int level)
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{
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int fd_gpio = -1;
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fd_gpio = open(DEV_GPIO, O_RDWR);
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if (fd_gpio < 0)
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{
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qDebug("open gpio device %s error!\n", DEV_GPIO);
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return RET_FAILED;
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}
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IOCTL_GPIO_ARG_ST parg;
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parg.gpio_index = index;
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parg.gpio_level = level;
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int ret = ioctl(fd_gpio, IOCTL_GPIO_LEVEL_SET, &parg);
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if (0 != ret)
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{
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ret = RET_FAILED;
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qDebug("set gpio level failed.");
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}
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else
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{
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qDebug("set gpio level success.");
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}
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return ret;
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}
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int gpio_get_level(int index,int *level)
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{
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int fd_gpio = -1;
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fd_gpio = open(DEV_GPIO, O_RDWR);
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if (fd_gpio < 0)
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{
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qDebug("open gpio device %s error!\n", DEV_GPIO);
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return RET_FAILED;
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}
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IOCTL_GPIO_ARG_ST parg;
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parg.gpio_index = index;
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int ret = ioctl(fd_gpio, IOCTL_GPIO_LEVEL_GET, &parg);
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if (0 != ret)
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{
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ret = RET_FAILED;
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qDebug("get gpio level failed.");
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}
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else
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{
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qDebug("get gpio level success.");
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if(parg.gpio_level >= 1)
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{
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*level = 1;
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}
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else
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{
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*level = 0;
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}
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}
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return ret;
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}
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