A20的linux debian 我已经有4线的接口了，怎么配置4线的电阻屏（不用USB)
我发现安卓有电阻屏配置，linux没有，该怎么办 linux也可以把电阻屏配置进去。A20：
rtp_used = 1
rtp_screen_size = 7
rtp_regidity_level = 7
rtp_press_threshold_enable = 0
rtp_press_threshold = 0x1f40
rtp_sensitive_level = 0xf
rtp_exchange_x_y_flag = 0
A10：
rtp_used =1
rtp_screen_size =5
rtp_regidity_level = 5
rtp_press_threshold_enable = 0
rtp_press_threshold = 0x1f40
rtp_sensitive_level = 0xf
rtp_exchange_x_y_flag = 0
sunbeyond 发表于 2015-2-6 17:15 static/image/common/back.gif
linux也可以把电阻屏配置进去。
A20：
加了没用
modong2006 发表于 2015-2-7 13:30 static/image/common/back.gif
加了没用
驱动编进去了吗？ 本帖最后由 jiangdou 于 2015-2-7 14:43 编辑
需要驱动，suxi-ts.ko/*
* authorby jiangdou
* youhave anything,plese to QQ:344283973
* timeat: 2012-0801
*
*/
//////////////////add by jiangdou/////////////
#if 1
#define print_dou(format,args...) printk(KERN_ERR " "format,##args)
#endif
//////////////////add by jiangdou/////////////
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/ioport.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <linux/fs.h>
#include <asm/uaccess.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/timer.h>
#include <linux/jiffies.h>
#include <linux/tick.h>
#include <asm-generic/cputime.h>
#include <mach/system.h>
#include <mach/hardware.h>
#include <mach/sys_config.h>
#ifdef CONFIG_HAS_EARLYSUSPEND
#include <linux/earlysuspend.h>
#endif
#if defined(CONFIG_HAS_EARLYSUSPEND) || defined(CONFIG_PM)
#include <linux/pm.h>
#endif
static int tp_flag = 0;
/* tp status value */
#define TP_INITIAL (-1)
#define TP_DOWN (0)
#define TP_UP (1)
#define TP_DATA_VA (2)
#define DUAL_TOUCH (dual_touch_distance)
#define TOUCH_CHANGE (3)
#define TP_DATA_AV_NO (0x3)
//#define FIX_ORIENTATION
#define ORIENTATION_DEFAULT_VAL (-1)
//#define TP_INT_PERIOD_TEST
//#define TP_TEMP_DEBUG
//#define TP_FREQ_DEBUG
#define TP_FIX_CENTER
#define IRQ_TP (29)
#define TP_BASSADDRESS (0xf1c25000)
#define TP_CTRL0 (0x00)
#define TP_CTRL1 (0x04)
#define TP_CTRL2 (0x08)
#define TP_CTRL3 (0x0c)
#define TP_INT_FIFOC (0x10)
#define TP_INT_FIFOS (0x14)
#define TP_TPR (0x18)
#define TP_CDAT (0x1c)
#define TEMP_DATA (0x20)
#define TP_DATA (0x24)
#define ADC_FIRST_DLY (0x1<<24)
#define ADC_FIRST_DLY_MODE (0x1<<23)
#define ADC_CLK_SELECT (0x0<<22)
#define ADC_CLK_DIVIDER (0x2<<20)
//#define CLK (6)
#define CLK (7)
#define FS_DIV (CLK<<16)
#define ACQ (0x3f)
#define T_ACQ (ACQ)
.............................(略)
static void report_single_point_implement(struct sunxi_ts_data *ts_data, struct ts_sample_data *sample_data)
{
//print_dou("jiangdou_tp__________________________x1:%d_____y1:%d\n", sample_data->x, sample_data->y);
input_report_abs(ts_data->input, ABS_MT_TOUCH_MAJOR,800);
sample_data->x = (106458*((4096 - sample_data->x) - 180))/100000;//x轴正反向后左移180到0，同时等比例放大到最大坐标
//input_report_abs(ts_data->input, ABS_MT_POSITION_X, sample_data->x);
//sample_data->y = 4096 - sample_data->y;
sample_data->y = (107758*(sample_data->y - 165))/100000; //107658，，y左移165到0,同时等比例放大到最大坐标
//为什么107758/100000 =1.07758（放大倍数），内核不支持浮点
//print_dou("\njiangdou_tp__________________________x2:%d_____y2:%d\n", sample_data->x, sample_data->y);
input_report_abs(ts_data->input, ABS_MT_POSITION_X, sample_data->x);
input_report_abs(ts_data->input, ABS_MT_POSITION_Y, sample_data->y);
input_mt_sync(ts_data->input);
input_sync(ts_data->input);
return;
}
//report_double_point(ts_data, sample_data);//注释掉2点上报，，因为2点不精准，无意义
...................(略)
static void __exit sunxi_ts_exit(void)
{
platform_driver_unregister(&sunxi_ts_driver);
platform_device_unregister(&sunxi_ts_device);
}
module_init(sunxi_ts_init);
module_exit(sunxi_ts_exit);
MODULE_AUTHOR("jiangdou");
MODULE_DESCRIPTION("sunxi touchscreen driver");
MODULE_LICENSE("GPL");
vvvv,,,
附带我项目的图片：4线电阻屏：
坐标误差1-2mm以内，小图标点击，效果比电容屏好
抱歉字数限制，代码只是重点片段
这是安卓的驱动啊
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