test_unrt.c

LINUX下的UART驱动程序

#include <linux/kernel.h>
#include <linux/module.h>

int init_module(void)
{
	int red;
	s3c2410_serial_open();
	printk("the COM2 is open\n");

	char *pstr = "success\n";
	red = s3c2410_serial_write(pstr,8);
	printk("the len of string is <%d>\n",red);
	
	char str[1024];
	memset(str,'\0',1024);
	red = s3c2410_serial_read(str,10);
	printk("the send string is [%s]\n",str);
	printk("the len of string is <%d>\n",red);

	return 0;
}

void cleanup_module(void)
{
	printk("the test is over\n");
}