359 lines
8.0 KiB
C
359 lines
8.0 KiB
C
#include <rthw.h>
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#include <rtthread.h>
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#include <s3c24x0.h>
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#include <rtgui/rtgui_system.h>
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#include <rtgui/rtgui_server.h>
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#include <rtgui/event.h>
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#include "touch.h"
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/* ADCCON Register Bits */
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#define S3C2410_ADCCON_ECFLG (1<<15)
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#define S3C2410_ADCCON_PRSCEN (1<<14)
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#define S3C2410_ADCCON_PRSCVL(x) (((x)&0xFF)<<6)
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#define S3C2410_ADCCON_PRSCVLMASK (0xFF<<6)
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#define S3C2410_ADCCON_SELMUX(x) (((x)&0x7)<<3)
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#define S3C2410_ADCCON_MUXMASK (0x7<<3)
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#define S3C2410_ADCCON_STDBM (1<<2)
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#define S3C2410_ADCCON_READ_START (1<<1)
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#define S3C2410_ADCCON_ENABLE_START (1<<0)
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#define S3C2410_ADCCON_STARTMASK (0x3<<0)
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/* ADCTSC Register Bits */
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#define S3C2410_ADCTSC_UD_SEN (1<<8) /* ghcstop add for s3c2440a */
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#define S3C2410_ADCTSC_YM_SEN (1<<7)
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#define S3C2410_ADCTSC_YP_SEN (1<<6)
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#define S3C2410_ADCTSC_XM_SEN (1<<5)
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#define S3C2410_ADCTSC_XP_SEN (1<<4)
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#define S3C2410_ADCTSC_PULL_UP_DISABLE (1<<3)
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#define S3C2410_ADCTSC_AUTO_PST (1<<2)
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#define S3C2410_ADCTSC_XY_PST(x) (((x)&0x3)<<0)
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/* ADCDAT0 Bits */
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#define S3C2410_ADCDAT0_UPDOWN (1<<15)
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#define S3C2410_ADCDAT0_AUTO_PST (1<<14)
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#define S3C2410_ADCDAT0_XY_PST (0x3<<12)
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#define S3C2410_ADCDAT0_XPDATA_MASK (0x03FF)
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/* ADCDAT1 Bits */
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#define S3C2410_ADCDAT1_UPDOWN (1<<15)
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#define S3C2410_ADCDAT1_AUTO_PST (1<<14)
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#define S3C2410_ADCDAT1_XY_PST (0x3<<12)
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#define S3C2410_ADCDAT1_YPDATA_MASK (0x03FF)
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#define WAIT4INT(x) (((x)<<8) | \
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S3C2410_ADCTSC_YM_SEN | S3C2410_ADCTSC_YP_SEN | S3C2410_ADCTSC_XP_SEN | \
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S3C2410_ADCTSC_XY_PST(3))
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#define AUTOPST (S3C2410_ADCTSC_YM_SEN | S3C2410_ADCTSC_YP_SEN | S3C2410_ADCTSC_XP_SEN | \
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S3C2410_ADCTSC_AUTO_PST | S3C2410_ADCTSC_XY_PST(0))
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#define X_MIN 74
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#define X_MAX 934
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#define Y_MIN 89
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#define Y_MAX 920
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struct s3c2410ts
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{
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long xp;
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long yp;
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int count;
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int shift;
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int delay;
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int presc;
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char phys[32];
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};
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static struct s3c2410ts ts;
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struct rtgui_touch_device
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{
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struct rt_device parent;
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rt_timer_t poll_timer;
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rt_uint16_t x, y;
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rt_bool_t calibrating;
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rt_touch_calibration_func_t calibration_func;
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rt_uint16_t min_x, max_x;
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rt_uint16_t min_y, max_y;
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};
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static struct rtgui_touch_device *touch = RT_NULL;
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static int first_down_report;
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static void report_touch_input(int updown)
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{
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struct rtgui_event_mouse emouse;
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/* set emouse button */
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emouse.button = RTGUI_MOUSE_BUTTON_LEFT;
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emouse.parent.sender = RT_NULL;
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if (updown)
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{
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ts.xp = ts.xp / ts.count;
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ts.yp = ts.yp / ts.count;;
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if ((touch->calibrating == RT_TRUE) && (touch->calibration_func != RT_NULL))
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{
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touch->x = ts.xp;
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touch->y = ts.yp;
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}
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else
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{
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touch->x = 240 * (ts.xp-touch->min_x)/(touch->max_x-touch->min_x);
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touch->y = 320 - (320*(ts.yp-touch->min_y)/(touch->max_y-touch->min_y));
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}
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emouse.x = touch->x;
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emouse.y = touch->y;
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if(first_down_report == 1)
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{
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emouse.parent.type = RTGUI_EVENT_MOUSE_BUTTON;
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emouse.button |= RTGUI_MOUSE_BUTTON_DOWN;
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}
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else
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{
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emouse.parent.type = RTGUI_EVENT_MOUSE_MOTION;
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emouse.button = 0;
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}
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}
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else
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{
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emouse.x = touch->x;
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emouse.y = touch->y;
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emouse.parent.type = RTGUI_EVENT_MOUSE_BUTTON;
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emouse.button |= RTGUI_MOUSE_BUTTON_UP;
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if ((touch->calibrating == RT_TRUE) && (touch->calibration_func != RT_NULL))
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{
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/* callback function */
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touch->calibration_func(emouse.x, emouse.y);
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}
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}
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/*
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rt_kprintf("touch %s: ts.x: %d, ts.y: %d\n", updown? "down" : "up",
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touch->x, touch->y);
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*/
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/* send event to server */
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if (touch->calibrating != RT_TRUE)
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{
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rtgui_server_post_event((&emouse.parent), sizeof(emouse));
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}
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}
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static void touch_timer_fire(void* parameter)
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{
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rt_uint32_t data0;
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rt_uint32_t data1;
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int updown;
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data0 = ADCDAT0;
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data1 = ADCDAT1;
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updown = (!(data0 & S3C2410_ADCDAT0_UPDOWN)) && (!(data1 & S3C2410_ADCDAT0_UPDOWN));
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if (updown)
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{
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if (ts.count != 0)
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{
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report_touch_input(updown);
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}
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ts.xp = 0;
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ts.yp = 0;
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ts.count = 0;
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ADCTSC = S3C2410_ADCTSC_PULL_UP_DISABLE | AUTOPST;
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ADCCON |= S3C2410_ADCCON_ENABLE_START;
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}
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}
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static void s3c2410_adc_stylus_action(void)
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{
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rt_uint32_t data0;
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rt_uint32_t data1;
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data0 = ADCDAT0;
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data1 = ADCDAT1;
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ts.xp += data0 & S3C2410_ADCDAT0_XPDATA_MASK;
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ts.yp += data1 & S3C2410_ADCDAT1_YPDATA_MASK;
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ts.count++;
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if (ts.count < (1<<ts.shift))
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{
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ADCTSC = S3C2410_ADCTSC_PULL_UP_DISABLE | AUTOPST;
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ADCCON |= S3C2410_ADCCON_ENABLE_START;
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}
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else
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{
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if (first_down_report)
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{
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report_touch_input(1);
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ts.xp = 0;
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ts.yp = 0;
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ts.count = 0;
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first_down_report = 0;
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}
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/* start timer */
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rt_timer_start(touch->poll_timer);
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ADCTSC = WAIT4INT(1);
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}
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SUBSRCPND |= BIT_SUB_ADC;
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}
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static void s3c2410_intc_stylus_updown(void)
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{
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rt_uint32_t data0;
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rt_uint32_t data1;
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int updown;
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data0 = ADCDAT0;
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data1 = ADCDAT1;
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updown = (!(data0 & S3C2410_ADCDAT0_UPDOWN)) && (!(data1 & S3C2410_ADCDAT0_UPDOWN));
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/* rt_kprintf("stylus: %s\n", updown? "down" : "up"); */
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if (updown)
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{
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touch_timer_fire(0);
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}
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else
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{
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/* stop timer */
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rt_timer_stop(touch->poll_timer);
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first_down_report = 1;
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if (ts.xp >= 0 && ts.yp >= 0)
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{
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report_touch_input(updown);
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}
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ts.count = 0;
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ADCTSC = WAIT4INT(0);
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}
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SUBSRCPND |= BIT_SUB_TC;
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}
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static void rt_touch_handler(int irqno)
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{
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if (SUBSRCPND & BIT_SUB_ADC)
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{
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/* INT_SUB_ADC */
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s3c2410_adc_stylus_action();
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}
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if (SUBSRCPND & BIT_SUB_TC)
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{
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/* INT_SUB_TC */
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s3c2410_intc_stylus_updown();
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}
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/* clear interrupt */
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INTPND |= (1ul << INTADC);
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}
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/* RT-Thread Device Interface */
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static rt_err_t rtgui_touch_init (rt_device_t dev)
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{
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/* init touch screen structure */
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rt_memset(&ts, 0, sizeof(struct s3c2410ts));
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ts.delay = 50000;
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ts.presc = 9;
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ts.shift = 2;
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ts.count = 0;
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ts.xp = ts.yp = 0;
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ADCCON = S3C2410_ADCCON_PRSCEN | S3C2410_ADCCON_PRSCVL(ts.presc);
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ADCDLY = ts.delay;
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ADCTSC = WAIT4INT(0);
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rt_hw_interrupt_install(INTADC, rt_touch_handler, RT_NULL);
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rt_hw_interrupt_umask(INTADC);
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/* clear interrupt */
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INTPND |= (1ul << INTADC);
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SUBSRCPND |= BIT_SUB_TC;
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SUBSRCPND |= BIT_SUB_ADC;
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/* install interrupt handler */
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INTSUBMSK &= ~BIT_SUB_ADC;
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INTSUBMSK &= ~BIT_SUB_TC;
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first_down_report = 1;
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return RT_EOK;
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}
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static rt_err_t rtgui_touch_control (rt_device_t dev, rt_uint8_t cmd, void *args)
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{
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switch (cmd)
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{
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case RT_TOUCH_CALIBRATION:
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touch->calibrating = RT_TRUE;
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touch->calibration_func = (rt_touch_calibration_func_t)args;
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break;
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case RT_TOUCH_NORMAL:
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touch->calibrating = RT_FALSE;
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break;
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case RT_TOUCH_CALIBRATION_DATA:
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{
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struct calibration_data* data;
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data = (struct calibration_data*) args;
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//update
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touch->min_x = data->min_x;
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touch->max_x = data->max_x;
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touch->min_y = data->max_y;
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touch->max_y = data->min_y;
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/*
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rt_kprintf("min_x = %d, max_x = %d, min_y = %d, max_y = %d\n",
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touch->min_x, touch->max_x, touch->min_y, touch->max_y);
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*/
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}
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break;
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}
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return RT_EOK;
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}
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void rtgui_touch_hw_init(void)
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{
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touch = (struct rtgui_touch_device*)rt_malloc (sizeof(struct rtgui_touch_device));
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if (touch == RT_NULL) return; /* no memory yet */
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/* clear device structure */
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rt_memset(&(touch->parent), 0, sizeof(struct rt_device));
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touch->calibrating = RT_FALSE;
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touch->min_x = X_MIN;
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touch->max_x = X_MAX;
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touch->min_y = Y_MIN;
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touch->max_y = X_MAX;
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/* init device structure */
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touch->parent.type = RT_Device_Class_Unknown;
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touch->parent.init = rtgui_touch_init;
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touch->parent.control = rtgui_touch_control;
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touch->parent.private = RT_NULL;
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/* create 1/8 second timer */
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touch->poll_timer = rt_timer_create("touch", touch_timer_fire, RT_NULL,
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RT_TICK_PER_SECOND/8, RT_TIMER_FLAG_PERIODIC);
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/* register touch device to RT-Thread */
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rt_device_register(&(touch->parent), "touch", RT_DEVICE_FLAG_RDWR);
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}
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