led_config.h

基于X86系统的Linux下的LED driver开发的example code, 并附带有相应的测试程序。

#define LED_Config_Debug 1

#ifdef LED_Config_Debug
#  ifdef __KERNEL__
     /* This one if debugging is on, and kernel space */
#    define PDEBUG(fmt, args...) printk( KERN_NOTICE "J2M_Config: " fmt, ## args)
#  else
     /* This one for user space */
#    define PDEBUG(fmt, args...) fprintf(stderr, fmt, ## args)
#  endif
#else
#  define PDEBUG(fmt, args...) /* not debugging: nothing */
#endif

#include <linux/ioctl.h>
#include <linux/cdev.h>


#define LED_CONFIG_MAJOR 0

/* Use 'k' as magic number */
#define LED_MAGIC  'K'
/* Please use a different 8-bit number in your code */


//#define LED_Config_IOC_Status _IOWR(LED_Config_IOC_MAGIC, 9,int)
#define LED_Config_IOC_Setting _IOWR(LED_Config_IOC_MAGIC, 8,int)
#define LED_PRE_ON		_IOWR(LED_MAGIC,0,int)
#define LED_PRE_OFF		_IOWR(LED_MAGIC,1,int)
#define LED_PRE_BLINK	_IOWR(LED_MAGIC,2,int)
#define LED_COM_ON		_IOWR(LED_MAGIC,3,int)
#define LED_COM_OFF		_IOWR(LED_MAGIC,4,int)
#define LED_COM_BLINK	_IOWR(LED_MAGIC,5,int)



#define LED_Config_Data_fail                	0x4
#define LED_low_Data_fail			0x0

#define GPIO_config_register_address		0x1187

#define GPIO_status_register_address		0x118f

#define GPIO_base_address			0x1180
#define LED_ADDRESS				GPIO_base_address + 0x0c
#define GPIO_BLINK_ENABLE_REGISTER		GPIO_base_address + 0x18