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rt-thread-official/bsp/stm32f429_armfly/drivers/drv_ft5x06.c

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/*
* File : drv_ft5x06.c
* ft5x06 touch driver
* COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
* 2017-08-08 Yang the first version
*/
#include <rtthread.h>
#include <rtdevice.h>
#ifdef RT_USING_FINSH
#include <finsh.h>
#endif
#ifdef RT_USING_RTGUI
#include <rtgui/event.h>
#include <rtgui/rtgui_server.h>
#endif
#include "board.h"
#define BSP_TOUCH_SAMPLE_HZ 30
#define I2CBUS_NAME "i2c0"
#define FT5x06_TS_ADDR 0x38
#define TP_MAX_TOUCH_POINT 5
#define DEBUG
#ifdef DEBUG
#define DEBUG_PRINTF(...) rt_kprintf(__VA_ARGS__)
#else
#define DEBUG_PRINTF(...)
#endif
#define CTRL_NOAUTO_MONITOR 0x00
#define CTRL_AUTO_MONITOR 0x01
#define PMODE_ACTIVE 0x00
#define PMODE_MONITOR 0x01
#define PMODE_STANDBY 0x02
#define PMODE_HIBERNATE 0x03
#define G_MODE_POLLING 0x00
#define G_MODE_TRIGGER 0x01
#define TOUCH_POINT_GET_EVENT(T) ((touch_event_t)((T).XH >> 6))
#define TOUCH_POINT_GET_ID(T) ((T).YH >> 4)
#define TOUCH_POINT_GET_X(T) ((((T).XH & 0x0f) << 8) | (T).XL)
#define TOUCH_POINT_GET_Y(T) ((((T).YH & 0x0f) << 8) | (T).YL)
typedef enum _touch_event
{
kTouch_Down = 0, /*!< The state changed to touched. */
kTouch_Up = 1, /*!< The state changed to not touched. */
kTouch_Contact = 2, /*!< There is a continuous touch being detected. */
kTouch_Reserved = 3 /*!< No touch information available. */
} touch_event_t;
typedef struct _touch_point
{
touch_event_t TOUCH_EVENT; /*!< Indicates the state or event of the touch point. */
uint8_t TOUCH_ID; /*!< Id of the touch point. This numeric value stays constant between down and up event. */
uint16_t TOUCH_X; /*!< X coordinate of the touch point */
uint16_t TOUCH_Y; /*!< Y coordinate of the touch point */
} touch_point_t;
typedef struct _ft5x06_touch_point
{
uint8_t XH;
uint8_t XL;
uint8_t YH;
uint8_t YL;
} ft5x06_touch_point_t;
typedef struct _ft5x06_touch_data
{
uint8_t DEVIDE_MODE;
uint8_t GEST_ID;
uint8_t TD_STATUS;
ft5x06_touch_point_t TOUCH;
} ft5x06_touch_data_t;
static struct rt_i2c_bus_device *_i2c_bus;
static int _ft5x06_read(unsigned char cmd,
void *buf,
size_t len)
{
struct rt_i2c_msg msgs[2];
msgs[0].addr = FT5x06_TS_ADDR;
msgs[0].flags = RT_I2C_WR;
msgs[0].buf = &cmd;
msgs[0].len = sizeof(cmd);
msgs[1].addr = FT5x06_TS_ADDR;
msgs[1].flags = RT_I2C_RD;
msgs[1].buf = buf;
msgs[1].len = len;
if (rt_i2c_transfer(_i2c_bus, msgs, 2) == 2)
return len;
else
return -1;
}
#ifdef RT_USING_FINSH
static int search_ft5x06(void)
{
struct rt_i2c_msg msgs[2];
uint8_t cmd = 0xA3;
uint8_t buf = 0;
msgs[0].flags = RT_I2C_WR;
msgs[0].buf = &cmd;
msgs[0].len = sizeof(cmd);
msgs[1].flags = RT_I2C_RD;
msgs[1].buf = &buf;
msgs[1].len = 1;
for (int i = 0; i <= 0x7f; i++)
{
int len;
msgs[0].addr = i;
msgs[1].addr = i;
len = rt_i2c_transfer(_i2c_bus, msgs, 2);
if (len == 2)
{
rt_kprintf("add:%02X transfer success, id: %02X\n", i, buf);
}
}
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(search_ft5x06, sft, search ft5x06 chip);
static int ft5x06_dump(void)
{
uint8_t i;
uint8_t reg_value;
DEBUG_PRINTF("[FTS] Touch Chip\r\n");
for (i = 0; i <= 255; i++)
{
_ft5x06_read(i, &reg_value, 1);
if (i % 8 == 7)
DEBUG_PRINTF("0x%02X = 0x%02X\r\n", i, reg_value);
else
DEBUG_PRINTF("0x%02X = 0x%02X ", i, reg_value);
}
DEBUG_PRINTF("\n");
return 0;
}
FINSH_FUNCTION_EXPORT_ALIAS(ft5x06_dump, ftdump, ft5x06 dump registers);
#endif
static int ft5x06_read_touch(touch_point_t *dp)
{
#if 0
uint8_t data[33];
int i;
_ft5x06_read(0, data, sizeof(data));
for (i = 0; i < sizeof(data)/sizeof(data[0]); i++)
{
DEBUG_PRINTF("%02X ", data[i]);
}
DEBUG_PRINTF("\n");
return -1;
#else
ft5x06_touch_data_t touch_data;
_ft5x06_read(0, &touch_data, sizeof(ft5x06_touch_data_t));
dp->TOUCH_X = TOUCH_POINT_GET_Y(touch_data.TOUCH);
dp->TOUCH_Y = TOUCH_POINT_GET_X(touch_data.TOUCH);
DEBUG_PRINTF(" ==> status : %d (%d, %d)\n", touch_data.TD_STATUS, dp->TOUCH_X, dp->TOUCH_Y);
if (touch_data.TD_STATUS != 0)
return 0;
else
return -1;
#endif
}
static void _touch_session()
{
touch_point_t tpd;
#ifdef RT_USING_RTGUI
struct rtgui_event_mouse emouse;
#endif
ft5x06_read_touch(&tpd);
#ifdef RT_USING_RTGUI
emouse.parent.sender = RT_NULL;
emouse.wid = RT_NULL;
emouse.parent.type = RTGUI_EVENT_MOUSE_BUTTON;
emouse.button = RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN;
emouse.x = tpd.TOUCH_X;
emouse.y = tpd.TOUCH_Y;
emouse.ts = rt_tick_get();
emouse.id = emouse.ts;
if (emouse.id == 0) emouse.id = 1;
rtgui_server_post_event(&emouse.parent, sizeof(emouse));
#endif
do
{
rt_thread_delay(RT_TICK_PER_SECOND / BSP_TOUCH_SAMPLE_HZ);
if (ft5x06_read_touch(&tpd) != 0)
break;
#ifdef RT_USING_RTGUI
emouse.parent.type = RTGUI_EVENT_MOUSE_MOTION;
emouse.x = tpd.TOUCH_X;
emouse.y = tpd.TOUCH_Y;
emouse.ts = rt_tick_get();
rtgui_server_post_event(&emouse.parent, sizeof(emouse));
#endif
}
while (1);
#ifdef RT_USING_RTGUI
/* Always send touch up event. */
emouse.parent.type = RTGUI_EVENT_MOUSE_BUTTON;
emouse.button = RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_UP;
emouse.x = tpd.TOUCH_X;
emouse.y = tpd.TOUCH_Y;
emouse.ts = rt_tick_get();
rtgui_server_post_event(&emouse.parent, sizeof(emouse));
#endif
}
static void touch_entry(void *p)
{
GPIO_InitTypeDef GPIO_InitStruct;
__HAL_RCC_GPIOH_CLK_ENABLE();
/*Configure GPIO pin : PH7 */
GPIO_InitStruct.Pin = GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
HAL_GPIO_Init(GPIOH, &GPIO_InitStruct);
while(1)
{
rt_thread_delay(RT_TICK_PER_SECOND / 60);
if (HAL_GPIO_ReadPin(GPIOH, GPIO_PIN_7) == GPIO_PIN_RESET)
{
_touch_session();
}
else
continue;
}
}
int ft5x06_hw_init(void)
{
rt_thread_t tid;
rt_device_t dev;
dev = rt_device_find(I2CBUS_NAME);
if (!dev)
{
DEBUG_PRINTF("search device failed: %s\n", I2CBUS_NAME);
return -1;
}
if (rt_device_open(dev, RT_DEVICE_OFLAG_RDWR) != RT_EOK)
{
DEBUG_PRINTF("open device failed: %s\n", I2CBUS_NAME);
return -1;
}
DEBUG_PRINTF("ft5x06 set i2c bus to %s\n", I2CBUS_NAME);
_i2c_bus = (struct rt_i2c_bus_device *)dev;
tid = rt_thread_create("touch", touch_entry, RT_NULL, 2048, 10, 20);
if (!tid)
{
rt_device_close(dev);
return -1;
}
rt_thread_startup(tid);
return 0;
}
INIT_APP_EXPORT(ft5x06_hw_init);
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