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uuwu2000 2021-03-17
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make zImage执行后生成的就是linux系统安装文件了啊
uuwu2000 2021-03-17
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改啥呢？是我说要改的那几个文件么？
qq_1104962332 2021-03-17
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能帮忙改一下吗？
uuwu2000 2021-03-17
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将tl2543.c复制到linux-2.6.38/drivers/char
修改Kconfig、Makefile文件，仿制其他的配置修改
回到linux-2.6.38目录下
1) make menuconfig.......(没有第一步，菜单看不见yc...)
2) linux-2.6.38/drivers/char/Makefile最后加上
obj-$(CONFIG_TLC2543) += tlc2543.o
3) make zImage
uuwu2000 2021-03-17
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// TLC2543 SPICS1-C7 SPICLK1-C5 SPIMOSI1-C6 SPIMISO1-C4
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/sched.h>
#include <linux/cdev.h>
#include <linux/miscdevice.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <mach/map.h>
#include <mach/regs-gpio.h>
#include <plat/regs-timer.h>
#define SPI_NAME "spi1_2543"
static int major = 0;
static struct class* yc_drv_poll_class;
#define SPI_MISO 4
#define SPI_MOSI 6
#define SPI_CLK 5
/*
#define SPI_CS1 "C7"
#define SPI_CS2 "N9"
#define SPI_CS3 "L8"
*/
#define S3C64XX_GPCCON (S3C64XX_GPC_BASE + 0x00)
#define S3C6410_GPCCON_PA (0x7F008040)
#define S3C6410_GPCDAT_PA (0x7F008044)
#define S3C6410_GPCPUD_PA (0x7F008048)
#define S3C6410_GPLCON1_PA (0x7F008814)
#define S3C6410_GPLDAT_PA (0x7F008818)
#define S3C6410_GPLPUD_PA (0x7F00881C)
#define S3C6410_GPNCON_PA (0x7F008830)
#define S3C6410_GPNDAT_PA (0x7F008834)
#define S3C6410_GPNPUD_PA (0x7F008838)
static volatile unsigned long* gpccon = NULL;
static volatile unsigned long* gpcdat = NULL;
static volatile unsigned long* gpcpud = NULL;
static volatile unsigned long* gplcon = NULL;
static volatile unsigned long* gpldat = NULL;
static volatile unsigned long* gplpud = NULL;
static volatile unsigned long* gpncon = NULL;
static volatile unsigned long* gpndat = NULL;
static volatile unsigned long* gpnpud = NULL;
static int ycval[33];
static struct timer_list poll_timer;
static bool entimer;
static inline void set_cs1(int v){ // C7
unsigned long tmp;
tmp = *gpcdat;
if (v!=0) {
tmp |= (1<<7);
} else {
tmp &= ~(1<<7);
}
*gpcdat = tmp;
}
static inline void set_cs2(int v){ // N9
unsigned long tmp;
tmp = *gpndat;
if (v!=0) {
tmp |= (1<<9);
} else {
tmp &= ~(1<<9);
}
*gpndat = tmp;
}
static inline void set_cs3(int v){ // L8
unsigned long tmp;
tmp = *gpldat;
if (v!=0) {
tmp |= (1<<8);
} else {
tmp &= ~(1<<8);
}
*gpldat = tmp;
}
static inline void set_gpcx_value(int pinx ,int v){
unsigned long tmp;
tmp = *gpcdat;
if (v!=0) {
tmp |= (1<<pinx);
} else {
tmp &= ~(1<<pinx);
}
*gpcdat = tmp;
}
static inline int get_gpcx_value(int pinx){
int v;
unsigned long tmp;
tmp = *gpcdat;
v = tmp & (1<<pinx);
if(v!=0) return 1;
return 0;
}
static int tlc2543_convert(int chip, int chn){
int i,result;
set_gpcx_value(SPI_CLK, 0);
set_cs1(1);
set_cs2(1);
set_cs3(1);
udelay(1); // 10
result = 0;
chn = chn % 11;
chn <<=8; // followed bit need 0
if(chip==0) set_cs1(0);
if(chip==1) set_cs2(0);
if(chip==2) set_cs3(0);
udelay(2); // 5 // >1.425us
for(i=0;i<12;i++){
if(get_gpcx_value(SPI_MISO) != 0) result |= 0x01;
if((chn & 0x800)!=0)
set_gpcx_value(SPI_MOSI, 1);
else
set_gpcx_value(SPI_MOSI, 0);
set_gpcx_value(SPI_CLK, 1); // frequenc < 4.1MHz
udelay(1); // 5
if(i==11) udelay(10);
set_gpcx_value(SPI_CLK, 0);
udelay(1); // 5 // sugest above 1us, for wait out-data
chn <<= 1;
result <<= 1;
}
if(chip==0) set_cs1(1);
if(chip==1) set_cs2(1);
if(chip==2) set_cs3(1);
udelay(5); // new add
result >>= 1;
return (result);
}
///////////////////poll timer 500ms/////////////////////////////////
static void timer_func(unsigned long data){
int chip, chn, tmp, i, k, val[6];
for(chip=0; chip<3; chip++){
tlc2543_convert(chip, 0);
for(chn=0; chn<11; chn++){
for(i=0; i<5; i++)
val[i] = tlc2543_convert(chip, chn);
if(chn<10)
val[5] = tlc2543_convert(chip, chn+1);
else
val[5] = tlc2543_convert(chip, chn);
for(i=0; i<6; i++){
for(k=0; k<5-i; k++){
if(val[k]>val[k+1]){
tmp = val[k];
val[k] = val[k+1];
val[k+1] = tmp;
}
}
}
tmp = val[1] + val[2];
ycval[chip*11+chn] = tmp>>1;
}
}
mod_timer(&poll_timer,jiffies+30);
}
//////////////////////////////////////////////////////////////////////
static int spi_open(struct inode *inode,struct file *filp) {
set_cs1(1);
set_cs2(1);
set_cs3(1);
set_gpcx_value(SPI_CLK, 0);
init_timer(&poll_timer);
poll_timer.expires = jiffies + 30; // Linux tickets:100Hz, so:50*10ms=>500ms
poll_timer.function = timer_func;
add_timer(&poll_timer);
entimer = 1;
return 0;
}
static int spi_release(struct inode *inode,struct file *filp) {
if(entimer) {
del_timer(&poll_timer);
entimer = 0;
}
return 0;
}
static ssize_t spi_read(struct file *filp,char __user *buf,size_t count) {
return(ssize_t)(copy_to_user(buf,ycval,count));
}
static const struct file_operations spi_fops = {
.owner = THIS_MODULE,
.open = spi_open,
.read = spi_read,
.release = spi_release,
};
static int __init spi_init(void) {
major = register_chrdev(0, SPI_NAME, &spi_fops);
if(major < 0) return -1;
yc_drv_poll_class= class_create(THIS_MODULE, SPI_NAME);
device_create(yc_drv_poll_class, NULL, MKDEV(major, 0), NULL, SPI_NAME);
entimer = 0;
gpccon = ioremap(S3C6410_GPCCON_PA, 4);
gpcdat = ioremap(S3C6410_GPCDAT_PA, 4);
gpcpud = ioremap(S3C6410_GPCPUD_PA, 4);
*gpccon &= ~((0xF<<16)|(0xF<<20)|(0xF<<24)|(0xF<<28)); // 4BIT Control
*gpccon |= ((0x0<<16)|(0x1<<20)|(0x1<<24)|(0x1<<28)); // 0000=input 0001=output
*gpcpud &= ~((0x3<<8)|(0x3<<10)|(0x3<<12)|(0x3<<14)); // 2BIT Control
*gpcpud |= ((0x2<<8)|(0x2<<10)|(0x2<<12)|(0x2<<14)); // 10=pull-up 01=pull-down 00-tri
gplcon = ioremap(S3C6410_GPLCON1_PA, 4);
gpldat = ioremap(S3C6410_GPLDAT_PA, 4);
gplpud = ioremap(S3C6410_GPLPUD_PA, 4);
*gplcon &= ~(0xF<<0); // 4BIT Control CS3:L8
*gplcon |= (0x1<<0); // 0000=input 0001=output
*gplpud &= ~(0x3<<0); // 2BIT Control
*gplpud |= (0x2<<0); // 10=pull-up 01=pull-down 00-tri
gpncon = ioremap(S3C6410_GPNCON_PA, 4);
gpndat = ioremap(S3C6410_GPNDAT_PA, 4);
gpnpud = ioremap(S3C6410_GPNPUD_PA, 4);
*gpncon &= ~(0x000c0000); // 2BIT Control CS2:N9
*gpncon |= (0x00040000); // 00=input 01=output
*gpnpud &= ~(0x3<<18); // 2BIT Control
*gpnpud |= (0x2<<18); // 10=pull-up 01=pull-down 00-tri
return 0;
}
static void __exit spi_exit(void) {
device_destroy(yc_drv_poll_class, MKDEV(major, 0));
class_destroy(yc_drv_poll_class);
unregister_chrdev(major, SPI_NAME);
iounmap(gpccon);
iounmap(gpcdat);
iounmap(gpcpud);
iounmap(gplcon);
iounmap(gpldat);
iounmap(gplpud);
iounmap(gpncon);
iounmap(gpndat);
iounmap(gpnpud);
}
module_init(spi_init);
module_exit(spi_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("WUYONGMING");
MODULE_DESCRIPTION("SPI_TLC2543_DRIVRE");
qq_1104962332 2021-03-17
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嗯嗯，就是你说的
