rt-thread-official/bsp/allwinner/libraries/drivers/touch/drv_touch_gt9xx.c

/*
 * Copyright (c) 2006-2022, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2018-02-08     Zhangyihong  the first version
 * 2018-04-03     XY           gt9xx for 1024 * 600
 * 2018-04-14     liu2guang    optimize int and rst to pin framework
 * 2017-08-08     XY           imxrt1052
 * 2018-10-29     XY
 */
#include <rtthread.h>
#include <rtdevice.h>
#include "drv_touch.h"
#include "string.h"
#include "drv_pin.h"

#define DBG_TAG "TOUCH.gt9xx"
#define DBG_LVL DBG_LOG
#include <rtdbg.h>

// extern tcon_panel_t _panel;
#if 0
#define TP_INT_PIN GET_PIN(GPIO_PORT_E, GPIO_PIN_10) /* GPIO_PORT_E GPIO_PIN_10 */
#define TP_RST_PIN GET_PIN(GPIO_PORT_E, GPIO_PIN_11) /* GPIO_PORT_E GPIO_PIN_11 */
#else
#ifdef BSP_USING_MANGOPI // mango board
#define TP_INT_PIN GET_PIN(GPIO_PORT_D, GPIO_PIN_22) /* GPIO_PORT_D GPIO_PIN_22 */
#define TP_RST_PIN GET_PIN(GPIO_PORT_G, GPIO_PIN_11) /* GPIO_PORT_G GPIO_PIN_11 */
#elif defined(BSP_USING_M7)
#define TP_INT_PIN GET_PIN(GPIO_PORT_G, GPIO_PIN_14) /* GPIO_PORT_G GPIO_PIN_14 */
#define TP_RST_PIN GET_PIN(GPIO_PORT_G, GPIO_PIN_12) /* GPIO_PORT_G GPIO_PIN_12 */
#endif
#endif

#ifndef TP_INT_PIN
#error "Please config touch panel INT pin."
#endif
#ifndef TP_RST_PIN
#error "Please config touch panel RST pin."
#endif

#ifndef IIC_RETRY_NUM
#define IIC_RETRY_NUM 2
#endif

#define GT9xx_Read_Interval         (20)        /* gt9xx 读取坐标最小间隔时间 */

/* Either 0x5D or 0x14 could be used as the address */
#define GT9xx_TS_ADDR1 (0x14)
#define GT9xx_TS_ADDR2 (0x5D)
static uint8_t GT9xx_TS_ADDR = GT9xx_TS_ADDR1;

#define gt9xx_READ_XY_REG (0x814E)          /* 坐标寄存器       */
#define gt9xx_CLEARBUF_REG (0x814E)         /* 清除坐标寄存器   */
#define gt9xx_CONFIG_REG (0x8047)           /* 配置参数寄存器   */
#define gt9xx_COMMAND_REG (0x8040)          /* 实时命令         */
#define gt9xx_PRODUCT_ID_REG (0x8140)       /* 产品ID           */
#define gt9xx_VENDOR_ID_REG (0x814A)        /* 当前模组选项信息 */
#define gt9xx_CONFIG_VERSION_REG (0x8047)   /* 配置文件版本号   */
#define gt9xx_CONFIG_CHECKSUM_REG (0x80FF)  /* 配置文件校验码   */
#define gt9xx_FIRMWARE_VERSION_REG (0x8144) /* 固件版本号       */

static struct touch_driver gt9xx_driver;

void gt9xx_hw_reset(rt_uint8_t address)
{
    rt_tick_t delay = rt_tick_from_millisecond(30);

    rt_pin_mode(TP_RST_PIN, PIN_MODE_OUTPUT);
    rt_pin_mode(TP_INT_PIN, PIN_MODE_OUTPUT);

    if (address == 0x5D)
    {
        rt_pin_write(TP_RST_PIN, PIN_LOW);
        rt_pin_write(TP_INT_PIN, PIN_LOW);
        rt_thread_delay(delay);
        rt_pin_write(TP_RST_PIN, PIN_HIGH);
        rt_pin_write(TP_INT_PIN, PIN_LOW);
        rt_thread_delay(delay);
        rt_pin_write(TP_INT_PIN, PIN_LOW);
        rt_thread_delay(delay);
        rt_pin_write(TP_INT_PIN, PIN_HIGH);
    }
    else
    {
        rt_pin_write(TP_RST_PIN, PIN_LOW);
        rt_pin_write(TP_INT_PIN, PIN_HIGH);
        rt_thread_delay(delay);
        rt_pin_write(TP_RST_PIN, PIN_HIGH);
        rt_pin_write(TP_INT_PIN, PIN_HIGH);
        rt_thread_delay(delay);
        rt_pin_write(TP_INT_PIN, PIN_LOW);
        rt_thread_delay(delay);
        rt_pin_write(TP_INT_PIN, PIN_HIGH);
    }

    rt_thread_mdelay(5); /* more than 5ms */
}

static rt_bool_t gt9xx_probe(struct rt_i2c_bus_device *i2c_bus)
{
    rt_uint8_t cmd[2];
    rt_uint8_t buffer[5] = {0};

    GT9xx_TS_ADDR = GT9xx_TS_ADDR1;
    gt9xx_hw_reset(GT9xx_TS_ADDR);
    rt_thread_delay(RT_TICK_PER_SECOND / 5);

    cmd[0] = (rt_uint8_t)((gt9xx_PRODUCT_ID_REG >> 8) & 0xFF);
    cmd[1] = (rt_uint8_t)(gt9xx_PRODUCT_ID_REG & 0xFF);
    if (rt_touch_read(GT9xx_TS_ADDR1, &cmd, 2, buffer, 4) != 0)
    {
        if (rt_touch_read(GT9xx_TS_ADDR2, &cmd, 2, buffer, 4) != 0)
        {
            LOG_E("Failed to fetch GT9XX ID at the address 0x%x/0x%x", GT9xx_TS_ADDR1, GT9xx_TS_ADDR2);
            return RT_FALSE;
        }
        GT9xx_TS_ADDR = GT9xx_TS_ADDR2;
    }

    buffer[4] = '\0';

    LOG_D("%#X %#X %#X %#X %#X", buffer[0], buffer[1], buffer[2], buffer[3], buffer[4]);

    if (!rt_strcmp((const char *)buffer, "911"))
    {
        LOG_I("Found chip gt911");
        return RT_TRUE;
    }
    else if (!rt_strcmp((const char *)buffer, "928"))
    {
        LOG_I("Found chip gt928");
        return RT_TRUE;
    }
    else if (!rt_strcmp((const char *)buffer, "9147"))
    {
        LOG_I("Found chip gt9147");
        return RT_TRUE;
    }
    else if (!rt_strcmp((const char *)buffer, "9157"))
    {
        LOG_I("Found chip gt9157");
        return RT_TRUE;
    }
    else
    {
        LOG_E("Uknow chip gt9xx device: [%s]", buffer);
    }

    return RT_FALSE;
}

static void gt9xx_init(struct rt_i2c_bus_device *i2c_bus)
{
    rt_uint8_t buf = 0;
    rt_uint8_t cmd[2];

    cmd[0] = (rt_uint8_t)((gt9xx_CONFIG_VERSION_REG >> 8) & 0xFF);
    cmd[1] = (rt_uint8_t)(gt9xx_CONFIG_VERSION_REG & 0xFF);
    rt_touch_read(GT9xx_TS_ADDR, &cmd, 2, &buf, 1);
    LOG_I("GT9xx Config version: 0x%02X", buf);

    cmd[0] = (rt_uint8_t)((gt9xx_VENDOR_ID_REG >> 8) & 0xFF);
    cmd[1] = (rt_uint8_t)(gt9xx_VENDOR_ID_REG & 0xFF);
    rt_touch_read(GT9xx_TS_ADDR, &cmd, 2, &buf, 1);
    LOG_I("GT9xx Sensor id: 0x%02X", buf);
}

static void gt9xx_deinit(void)
{

}

static rt_err_t gt9xx_read_point(struct rt_touch_data *touch_data, rt_size_t touch_num)
{
    rt_uint8_t cmd[2];
    rt_uint8_t buf[8] = {0};
    static rt_uint8_t s_tp_down = 0;

    cmd[0] = (rt_uint8_t)((gt9xx_READ_XY_REG >> 8) & 0xFF);
    cmd[1] = (rt_uint8_t)(gt9xx_READ_XY_REG & 0xFF);
    rt_touch_read(GT9xx_TS_ADDR, &cmd, 2, buf, 8);

    if ((buf[0] & 0x01) == 0)
    {
        if (s_tp_down)
        {
            s_tp_down = 0;
            touch_data->event = RT_TOUCH_EVENT_UP;
        }
        else
        {
            touch_data->event = RT_TOUCH_EVENT_NONE;
        }
    }
    else
    {
        touch_data->x_coordinate = ((rt_uint16_t)buf[3] << 8) | buf[2];
        touch_data->y_coordinate = ((rt_uint16_t)buf[5] << 8) | buf[4];

        // rt_kprintf("X:%d    Y:%d\n", touch_data->x_coordinate, touch_data->y_coordinate);

        if (s_tp_down)
        {
            touch_data->event = RT_TOUCH_EVENT_MOVE;
            // rt_kprintf("s_tp_down\n");
        }
        else
        {
            touch_data->event = RT_TOUCH_EVENT_DOWN;
            s_tp_down = 1;
        }
    }

    buf[0] = ((gt9xx_CLEARBUF_REG >> 8) & 0xFF);
    buf[1] = (gt9xx_CLEARBUF_REG & 0xFF);
    buf[2] = 0x00;
    rt_touch_write(GT9xx_TS_ADDR, buf, 3);

    return RT_EOK;
}

struct touch_ops gt9xx_ops =
{
    .init = gt9xx_init,
    .deinit = gt9xx_deinit,
    .read_point = gt9xx_read_point,
};

int gt9xx_driver_register(void)
{
    gt9xx_driver.probe = gt9xx_probe;
    gt9xx_driver.ops = &gt9xx_ops;
    gt9xx_driver.read_interval = rt_tick_from_millisecond(GT9xx_Read_Interval);
    gt9xx_driver.check_mode = TOUCH_INT_MODE;
    gt9xx_driver.user_data = RT_NULL;

    rt_touch_drivers_register(&gt9xx_driver);

    return RT_EOK;
}
INIT_DEVICE_EXPORT(gt9xx_driver_register);