rt-thread-official/bsp/ls1cdev/drivers/touch.c

599 lines
19 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2017-12-30 Sundm75 first version
*/
#include <rtthread.h>
#include <rtdevice.h>
#include <stdbool.h>
#include <drivers/spi.h>
#include "ls1c.h"
#include "ls1c_gpio.h"
#include "ls1c_spi.h"
#include "drv_spi.h"
#include "touch.h"
#ifdef XPT2046_USING_TOUCH
#include <rtgui/calibration.h>
#include <rtgui/event.h>
#include <rtgui/kbddef.h>
#include <rtgui/rtgui_server.h>
#include <rtgui/rtgui_system.h>
//竖屏幕 不需要 _ILI_HORIZONTAL_DIRECTION_
//横屏幕 需要 _ILI_HORIZONTAL_DIRECTION_
//#define _ILI_HORIZONTAL_DIRECTION_
#if defined(_ILI_HORIZONTAL_DIRECTION_)
#define X_WIDTH 272
#define Y_WIDTH 480
#else
#define X_WIDTH 480
#define Y_WIDTH 272
#endif
/*
TOUCH INT: 84
*/
#define IS_TOUCH_UP() gpio_get(TOUCH_INT_PIN)
#define led_gpio 52 // led1指示
#define DUMMY 0x00
/*
7 6 - 4 3 2 1-0
s A2-A0 MODE SER/DFR PD1-PD0
*/
/* bit[1:0] power-down */
#define POWER_MODE0 (0) /* Power-Down Between Conversions. When */
/* each conversion is finished, the converter */
/* enters a low-power mode. At the start of the */
/* next conversion, the device instantly powers up */
/* to full power. There is no need for additional */
/* delays to ensure full operation, and the very first */
/* conversion is valid. The Y? switch is on when in */
/* power-down.*/
#define POWER_MODE1 (1) /* Reference is off and ADC is on. */
#define POWER_MODE2 (2) /* Reference is on and ADC is off. */
#define POWER_MODE3 (3) /* Device is always powered. Reference is on and */
/* ADC is on. */
/* bit[2] SER/DFR */
#define DIFFERENTIAL (0<<2)
#define SINGLE_ENDED (1<<2)
/* bit[3] mode */
#define MODE_12BIT (0<<3)
#define MODE_8BIT (1<<3)
/* bit[6:4] differential mode */
#define MEASURE_X (((1<<2) | (0<<1) | (1<<0))<<4)
#define MEASURE_Y (((0<<2) | (0<<1) | (1<<0))<<4)
#define MEASURE_Z1 (((0<<2) | (1<<1) | (1<<0))<<4)
#define MEASURE_Z2 (((1<<2) | (0<<1) | (0<<0))<<4)
/* bit[7] start */
#define START (1<<7)
/* X Y change. */
#define TOUCH_MSR_X (START | MEASURE_X | MODE_12BIT | DIFFERENTIAL | POWER_MODE0)
#define TOUCH_MSR_Y (START | MEASURE_Y | MODE_12BIT | DIFFERENTIAL | POWER_MODE0)
/* 以下定义XPT2046 的触摸屏位置*/
#if defined(_ILI_HORIZONTAL_DIRECTION_)
#define MIN_X_DEFAULT 2047
#define MAX_X_DEFAULT 47
#define MIN_Y_DEFAULT 102
#define MAX_Y_DEFAULT 1939
#else
#define MIN_X_DEFAULT 47
#define MAX_X_DEFAULT 2047
#define MIN_Y_DEFAULT 1939
#define MAX_Y_DEFAULT 102
#endif
#define SAMP_CNT 8 //the adc array size
#define SAMP_CNT_DIV2 4 //the middle of the adc array
#define SH 10 // Valve value
/*宏定义 */
#define TOUCH_SPI_X SPI1
#define TOUCH_INT_PIN 84
#define TOUCH_CS_PIN 49
#define TOUCH_SCK_PIN 46
#define TOUCH_MISO_PIN 47
#define TOUCH_MOSI_PIN 48
/*创建结构体将需要用到的东西进行打包*/
struct rtgui_touch_device
{
struct rt_device parent; /* 用于注册设备*/
rt_uint16_t x, y; /* 记录读取到的位置值 */
rt_bool_t calibrating; /* 触摸校准标志 */
rt_touch_calibration_func_t calibration_func;/* 触摸函数 函数指针 */
rt_uint16_t min_x, max_x; /* 校准后 X 方向最小 最大值 */
rt_uint16_t min_y, max_y; /* 校准后 Y 方向最小 最大值 */
struct rt_spi_device * spi_device; /* SPI 设备 用于通信 */
struct rt_event event; /* 事件同步,用于“笔中断” */
};
static struct rtgui_touch_device *touch = RT_NULL;
static rt_err_t touch_send_then_recv(struct rt_spi_device *device,
const void *send_buf,
rt_size_t send_length,
void *recv_buf,
rt_size_t recv_length)
{
rt_err_t result;
struct rt_spi_message message;
rt_uint8_t dummy[128] ;
rt_memset(dummy, DUMMY, sizeof(dummy));
RT_ASSERT(device != RT_NULL);
RT_ASSERT(device->bus != RT_NULL);
result = rt_mutex_take(&(device->bus->lock), RT_WAITING_FOREVER);
if (result == RT_EOK)
{
if (device->bus->owner != device)
{
/* not the same owner as current, re-configure SPI bus */
result = device->bus->ops->configure(device, &device->config);
if (result == RT_EOK)
{
/* set SPI bus owner */
device->bus->owner = device;
}
else
{
/* configure SPI bus failed */
result = -RT_EIO;
goto __exit;
}
}
/* send data */
message.send_buf = send_buf;
message.recv_buf = RT_NULL;
message.length = send_length;
message.cs_take = 1;
message.cs_release = 0;
message.next = RT_NULL;
result = device->bus->ops->xfer(device, &message);
if (result == 0)
{
result = -RT_EIO;
goto __exit;
}
/* recv data */
message.send_buf = dummy;
message.recv_buf = recv_buf;
message.length = recv_length;
message.cs_take = 0;
message.cs_release = 1;
message.next = RT_NULL;
result = device->bus->ops->xfer(device, &message);
if (result == 0)
{
result = -RT_EIO;
goto __exit;
}
result = RT_EOK;
}
else
{
return -RT_EIO;
}
__exit:
rt_mutex_release(&(device->bus->lock));
return result;
}
static void rtgui_touch_calculate(void)
{
if (touch != RT_NULL)
{
/* read touch */
{
rt_uint8_t i, j, k, min;
rt_uint16_t temp;
rt_uint16_t tmpxy[2][SAMP_CNT];
rt_uint8_t send_buffer[1];
rt_uint8_t recv_buffer[2];
for(i=0; i<SAMP_CNT; i++)
{
send_buffer[0] = TOUCH_MSR_X;
touch_send_then_recv(touch->spi_device, send_buffer, 1, recv_buffer, 2);
rt_kprintf("touch x: %d ",(recv_buffer[0]*256|recv_buffer[1])>>4);
#if defined(_ILI_HORIZONTAL_DIRECTION_)
tmpxy[1][i] = (recv_buffer[0]<<8)|recv_buffer[1] ;
tmpxy[1][i] >>= 4;
#else
tmpxy[0][i] = (recv_buffer[0]<<8)|recv_buffer[1] ;
tmpxy[0][i] >>=4;
#endif
send_buffer[0] = TOUCH_MSR_Y;
touch_send_then_recv(touch->spi_device, send_buffer, 1, recv_buffer, 2);
rt_kprintf("touch y: %d \n",(recv_buffer[0]*256|recv_buffer[1])>>4);
#if defined(_ILI_HORIZONTAL_DIRECTION_)
tmpxy[0][i] = (recv_buffer[0]<<8)|recv_buffer[1] ;
tmpxy[0][i] >>= 4;
#else
tmpxy[1][i] = (recv_buffer[0]<<8)|recv_buffer[1] ;
tmpxy[1][i] >>= 4;
#endif
}
/*再次打开触摸中断*/
send_buffer[0] = 1 << 7;
touch_send_then_recv(touch->spi_device, send_buffer, 1, recv_buffer, 2);
touch_send_then_recv(touch->spi_device, send_buffer, 1, recv_buffer, 2);
/* calculate average */
{
rt_uint32_t total_x = 0;
rt_uint32_t total_y = 0;
for(k=0; k<2; k++)
{
// sorting the ADC value
for(i=0; i<SAMP_CNT-1; i++)
{
min=i;
for (j=i+1; j<SAMP_CNT; j++)
{
if (tmpxy[k][min] > tmpxy[k][j])
min=j;
}
temp = tmpxy[k][i];
tmpxy[k][i] = tmpxy[k][min];
tmpxy[k][min] = temp;
}
//check value for Valve value
if((tmpxy[k][SAMP_CNT_DIV2+1]-tmpxy[k][SAMP_CNT_DIV2-2]) > SH)
{
return;
}
}
total_x=tmpxy[0][SAMP_CNT_DIV2-2]+tmpxy[0][SAMP_CNT_DIV2-1]+tmpxy[0][SAMP_CNT_DIV2]+tmpxy[0][SAMP_CNT_DIV2+1];
total_y=tmpxy[1][SAMP_CNT_DIV2-2]+tmpxy[1][SAMP_CNT_DIV2-1]+tmpxy[1][SAMP_CNT_DIV2]+tmpxy[1][SAMP_CNT_DIV2+1];
//calculate average value
touch->x=total_x>>2;
touch->y=total_y>>2;
rt_kprintf("touch->x:%d touch->y:%d\r\n", touch->x, touch->y);
} /* calculate average */
} /* read touch */
/* if it's not in calibration status */
/*触摸值缩放*/
if (touch->calibrating != RT_TRUE)
{
if (touch->max_x > touch->min_x)
{
touch->x = (touch->x - touch->min_x) * X_WIDTH/(touch->max_x - touch->min_x);
}
else
{
touch->x = (touch->min_x - touch->x) * X_WIDTH/(touch->min_x - touch->max_x);
}
if (touch->max_y > touch->min_y)
{
touch->y = (touch->y - touch->min_y) * Y_WIDTH /(touch->max_y - touch->min_y);
}
else
{
touch->y = (touch->min_y - touch->y) * Y_WIDTH /(touch->min_y - touch->max_y);
}
}
}
}
#include "ls1c_regs.h"
#define TOUCH_INT_EN __REG32(LS1C_INT4_EN)
rt_inline void touch_int_cmd(rt_bool_t NewState)
{
if(NewState == RT_TRUE)
{
//TOUCH_INT_EN |= (1<<(TOUCH_INT_PIN-64));
reg_set_one_bit(LS1C_INT4_EN, 1<<(TOUCH_INT_PIN-64));
}
else
{
//TOUCH_INT_EN &=(~ (1<<(TOUCH_INT_PIN-64)));
reg_clr_one_bit(LS1C_INT4_EN, 1<<(TOUCH_INT_PIN-64));
}
}
void ls1c_touch_irqhandler(void) /* TouchScreen */
{
if(gpio_get(TOUCH_INT_PIN)==0)
{
/* 触摸屏按下后操作 */
if (gpio_level_low == gpio_get(led_gpio))
gpio_set(led_gpio, gpio_level_high);
else
gpio_set(led_gpio, gpio_level_low);
touch_int_cmd(RT_FALSE);
rt_event_send(&touch->event, 1);
}
}
/*管脚初始化配置中断打开SPI1 CS0 设备*/
rt_inline void touch_init(void)
{
unsigned int touch_int_gpio = TOUCH_INT_PIN; // 触摸屏中断
int touch_irq = LS1C_GPIO_TO_IRQ(touch_int_gpio);
// 初始化按键中断
gpio_set_irq_type(touch_int_gpio, IRQ_TYPE_EDGE_FALLING);
rt_hw_interrupt_install(touch_irq, ls1c_touch_irqhandler, RT_NULL, "touch");
rt_hw_interrupt_umask(touch_irq);
gpio_init(touch_int_gpio, gpio_mode_input);
// 初始化led
gpio_init(led_gpio, gpio_mode_output);
gpio_set(led_gpio, gpio_level_high);
}
/* RT-Thread Device Interface */
static rt_err_t rtgui_touch_init (rt_device_t dev)
{
rt_uint8_t send;
rt_uint8_t recv_buffer[2];
struct rtgui_touch_device * touch_device = (struct rtgui_touch_device *)dev;
touch_init();
rt_kprintf("touch_init ...\n");
send = START | DIFFERENTIAL | POWER_MODE0;
touch_send_then_recv(touch->spi_device, &send, 1, recv_buffer, 2);
return RT_EOK;
}
static rt_err_t rtgui_touch_control (rt_device_t dev, int cmd, void *args)
{
switch (cmd)
{
case RT_TOUCH_CALIBRATION:
touch->calibrating = RT_TRUE;
touch->calibration_func = (rt_touch_calibration_func_t)args;
break;
case RT_TOUCH_NORMAL:
touch->calibrating = RT_FALSE;
break;
case RT_TOUCH_CALIBRATION_DATA:
{
struct calibration_data* data;
data = (struct calibration_data*) args;
//update
touch->min_x = data->min_x;
touch->max_x = data->max_x;
touch->min_y = data->min_y;
touch->max_y = data->max_y;
}
break;
}
return RT_EOK;
}
void _set_mouse_position(rt_uint32_t X, rt_uint32_t Y)
{}
static void touch_thread_entry(void *parameter)
{
rt_bool_t touch_down = RT_FALSE;
rt_uint32_t event_value;
struct rtgui_event_mouse emouse;
static struct _touch_previous
{
rt_uint32_t x;
rt_uint32_t y;
} touch_previous;
RTGUI_EVENT_MOUSE_BUTTON_INIT(&emouse);
emouse.wid = RT_NULL;
while(1)
{
/* 接收到触摸中断事件 */
if(rt_event_recv(&touch->event,
1,
RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
100,
&event_value)
== RT_EOK)
{
while(1)
{
if (IS_TOUCH_UP())
{
/* 触摸笔抬起 */
/* touch up */
emouse.button = (RTGUI_MOUSE_BUTTON_LEFT |RTGUI_MOUSE_BUTTON_UP);
/* use old value */
emouse.x = touch->x;
emouse.y = touch->y;
if(touch_down != RT_TRUE)
{
touch_int_cmd(RT_TRUE);
break;
}
if ((touch->calibrating == RT_TRUE) && (touch->calibration_func != RT_NULL))
{
/* 触摸校准处理 */
/* callback function */
touch->calibration_func(emouse.x, emouse.y);
}
else
{
/* 向ui发送触摸坐标 */
rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
}
rt_kprintf("touch up: (%d, %d)\n", emouse.x, emouse.y);
/* clean */
touch_previous.x = touch_previous.y = 0;
touch_down = RT_FALSE;
touch_int_cmd(RT_TRUE);
break;
} /* touch up */
else /* touch down or move */
{
if(touch_down == RT_FALSE)
{
rt_thread_delay(RT_TICK_PER_SECOND / 10);
}
else
{
rt_thread_delay(5);
}
if(IS_TOUCH_UP()) continue;
/* calculation */
rtgui_touch_calculate();
/* send mouse event */
emouse.parent.type = RTGUI_EVENT_MOUSE_BUTTON;
emouse.parent.sender = RT_NULL;
emouse.x = touch->x;
emouse.y = touch->y;
_set_mouse_position(emouse.x, emouse.y);
/* 光标跟随 */
/* init mouse button */
emouse.button = (RTGUI_MOUSE_BUTTON_LEFT |RTGUI_MOUSE_BUTTON_DOWN);
/* send event to server */
if (touch->calibrating != RT_TRUE)
{
#define previous_keep 8
/* filter. */
if((touch_previous.x > touch->x + previous_keep)
|| (touch_previous.x < touch->x - previous_keep)
|| (touch_previous.y > touch->y + previous_keep)
|| (touch_previous.y < touch->y - previous_keep))
{
touch_previous.x = touch->x;
touch_previous.y = touch->y;
/* 向ui发送触摸坐标 */
rtgui_server_post_event(&emouse.parent, sizeof(struct rtgui_event_mouse));
if(touch_down == RT_FALSE)
{
touch_down = RT_TRUE;
rt_kprintf("touch down: (%d, %d)\n", emouse.x, emouse.y);
}
else
{
rt_kprintf("touch motion: (%d, %d)\n", emouse.x, emouse.y);
}
}
}
else
{
touch_down = RT_TRUE;
}
} /* touch down or move */
} /* read touch */
} /* event recv */
} /* thread while(1) */
}
rt_err_t rtgui_touch_hw_init(const char * spi_device_name)
{
rt_uint32_t arg[2];
struct rt_device * spi_device;
struct rt_thread * touch_thread;
rt_err_t err;
rt_kprintf("spi1 cs0 start...\n");
spi_device = rt_device_find("spi10");
if(spi_device == RT_NULL)
{
rt_kprintf("Did not find spi1, exit thread....\n");
return;
}
err = rt_device_open(spi_device, RT_DEVICE_OFLAG_RDWR);
if(err != RT_EOK)
{
rt_kprintf("Open spi1 failed %08X, exit thread....\n", err);
return;
}
/* config spi */
{
struct rt_spi_configuration cfg;
cfg.data_width = 8;
cfg.mode = RT_SPI_MODE_0;
cfg.max_hz = 200 * 1000; /* 200K */
rt_spi_configure((struct rt_spi_device *)spi_device, &cfg);
}
touch = (struct rtgui_touch_device*)rt_malloc (sizeof(struct rtgui_touch_device));
if (touch == RT_NULL) return RT_ENOMEM; /* no memory yet */
/* clear device structure */
rt_memset(&(touch->parent), 0, sizeof(struct rt_device));
rt_event_init(&touch->event, "touch", RT_IPC_FLAG_FIFO);
touch->spi_device = (struct rt_spi_device *)spi_device;
touch->calibrating = false;
touch->min_x = MIN_X_DEFAULT;
touch->max_x = MAX_X_DEFAULT;
touch->min_y = MIN_Y_DEFAULT;
touch->max_y = MAX_Y_DEFAULT;
/* init device structure */
touch->parent.type = RT_Device_Class_Miscellaneous;
touch->parent.init = rtgui_touch_init;
touch->parent.control = rtgui_touch_control;
touch->parent.user_data = RT_NULL;
/* register touch device to RT-Thread */
rt_device_register(&(touch->parent), "touch", RT_DEVICE_FLAG_RDWR);
touch_thread = rt_thread_create("touch_thread",
touch_thread_entry, RT_NULL,
4096, RTGUI_SVR_THREAD_PRIORITY-1, 1);
if (touch_thread != RT_NULL) rt_thread_startup(touch_thread);
rt_device_init((rt_device_t)touch);
return RT_EOK;
}
#endif