hi3515 RTC Driver (ds1307/1339) driver and example

Compiling the driver into the/extdrv

Some drivers are as follows:

#include <linux/module.h>

#include <linux/miscdevice.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/string.h>
#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/fcntl.h>
#include <linux/mm.h>
#include <linux/miscdevice.h>
#include <linux/proc_fs.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/smp_lock.h>
#include <linux/init.h>
#include <asm/uaccess.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/system.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/string.h>
#include <linux/list.h>
#include <asm/semaphore.h>
#include <asm/delay.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/proc_fs.h>
#include <linux/poll.h>
#include <asm/hardware.h>
#include <asm/bitops.h>
#include <asm/uaccess.h>
#include <asm/irq.h>
#include <linux/moduleparam.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include "gpio_i2c.h"
#include "Gpio_i2c1.h"
#include "Rtc-ds1339.h"
#define Enable_test

#define Ds1339_bit_century 0x80/* in Reg_month */

static unsigned char rtc1339_byte_read (unsigned char chip_addr, unsigned char addr);


static unsigned char rtc1339_byte_write (unsigned char chip_addr,
unsigned char addr, unsigned char data)
{
#ifdef Enable_test
unsigned char reg_val;
#endif

Gpio_i2c_write (chip_addr, addr, data);
#ifdef Enable_test
Reg_val = Rtc1339_byte_read (chip_addr, addr);
if (reg_val! = data)
{
PRINTK ("Ec6214_byte_write error:addr:%x, reg:%x, val:%x, read:%x\r\n", chip_addr, addr, data, reg_val);
}
#endif
return 0;
}


static unsigned char rtc1339_byte_read (unsigned char chip_addr, unsigned char addr)
{
unsigned char reg_val;
Reg_val = Gpio_i2c_read (chip_addr, addr);
return reg_val;
}




///////////////////////////////////////////////////////////////////////////////
Open the ds1339*****************************************//
int Ds1339_open (struct inode * inode,struct file *file)
{
return 0;
}
///////////////////////////////////////////////////////////////////////////////
Close the ds1339*****************************************//
int ds1339_close (struct inode * inode,struct file *file)
{
return 0;
}

... ...

Examples are as follows:

#include <stdio.h>
#include <stdlib.h>/* GETENV () */
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <error.h>
#include <sys/time.h>
#include <unistd.h>
#include <time.h>
#include <getopt.h>
#include <linux/rtc.h>
#include "Rtc-ds1339.h"

int Init ()
{
int FD;
Open device File
FD = open ("/dev/rtc-ds1339", O_RDWR);
if (FD < 0)
{
printf ("Device open fail\n");
return-1;
}


return FD;
}

int main (int agc,char **AGV)
{
int fd,ch;
struct Rtc_time
{
unsigned int tm_sec;
unsigned int tm_min;
unsigned int tm_hour;
unsigned int tm_wday;
unsigned int tm_date;
unsigned int tm_month;
unsigned int tm_year;
};
struct Rtc_time TM;


tm.tm_year=2013;
tm.tm_month=03;
tm.tm_date=14;
tm.tm_wday=4;
tm.tm_hour=16;
tm.tm_min=18;


Fd=init ();
if (fd>0)
{
if (IOCTL (FD,CMD_SET_TIME,&AMP;TM) <0)
printf ("IOCTL eo\n");
while (1)
{
IOCTL (FD,CMD_GET_TIME,&AMP;TM);
printf ("%02d.%0 2d.%0 2d,%01d,%02d:%02d:%02d\n "
, tm.tm_year,tm.tm_month,tm.tm_date,tm.tm_wday,tm.tm_hour,tm.tm_min,tm.tm_sec);
Sleep (1);
}
Close (FD);
}


return 0;
}

The results of the operation are as follows:

hi3515 RTC Driver (ds1307/1339) driver and example