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