led_io.h

2440 ARM9 采集gpio的输入电平值的简单驱动

// 1. connection reset 
// 2. measure humidity [ticks](12 bit) and temperature [ticks](14 bit)
// 3. calculate humidity [%RH] and temperature 
// 4. calculate dew point 
// 5. print temperature, humidity, dew point 
#include <asm/bitops.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/irq.h>
#include <asm/arch/hardware.h>
#include <asm/system.h>
#include <asm/arch/regs-gpio.h>
#include <asm/arch/regs-clock.h> 

#define LED0		S3C2410_GPF5
#define LED1		S3C2410_GPF5
#define LED2		S3C2410_GPF5
#define LED3		S3C2410_GPF5

#define LED0_INP	S3C2410_GPF5_INP
#define LED1_INP	S3C2410_GPF5_INP
#define LED2_INP	S3C2410_GPF5_INP
#define LED3_INP	S3C2410_GPF5_INP

#define LED0_OUTP	S3C2410_GPF5_OUTP
#define LED1_OUTP	S3C2410_GPF5_OUTP
#define LED2_OUTP	S3C2410_GPF5_OUTP
#define LED3_OUTP	S3C2410_GPF5_OUTP

#define LED0_CLR()	s3c2410_gpio_setpin(LED0,0)
#define LED1_CLR()	s3c2410_gpio_setpin(LED1,0)
#define LED2_CLR()	s3c2410_gpio_setpin(LED2,0)
#define LED3_CLR()	s3c2410_gpio_setpin(LED3,0)

#define LED0_IN()	s3c2410_gpio_cfgpin(LED0,LED0_INP)
#define LED1_IN()	s3c2410_gpio_cfgpin(LED1,LED1_INP)
#define LED2_IN()	s3c2410_gpio_cfgpin(LED2,LED2_INP)
#define LED3_IN()	s3c2410_gpio_cfgpin(LED3,LED3_INP)

#define READ_LED0()	s3c2410_gpio_getpin(LED0)
#define READ_LED1()	s3c2410_gpio_getpin(LED1)
#define READ_LED2()	s3c2410_gpio_getpin(LED2)
#define READ_LED3()	s3c2410_gpio_getpin(LED3)