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rt-thread-official/bsp/nuvoton/libraries/nu_packages/TPC/ft5446.c

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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-04-11 Wayne First version
*/
#include <rtthread.h>
#include <rtdevice.h>
#include <string.h>
#define DBG_TAG "ft5446"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#include "ft5446.h"
static struct rt_i2c_client ft5446_client;
static void ft5446_touch_up(void *buf, rt_int8_t id);
static rt_err_t ft5446_write_reg(struct rt_i2c_client *dev, rt_uint8_t reg, rt_uint8_t value)
{
struct rt_i2c_msg msgs;
rt_uint8_t buf[2];
buf[0] = reg;
buf[1] = value;
msgs.addr = dev->client_addr;
msgs.flags = RT_I2C_WR;
msgs.buf = buf;
msgs.len = sizeof(buf);
if (rt_i2c_transfer(dev->bus, &msgs, 1) == 1)
{
return RT_EOK;
}
else
{
return -RT_ERROR;
}
}
static rt_err_t ft5446_read_reg(struct rt_i2c_client *dev, rt_uint8_t reg, rt_uint8_t *data, rt_uint8_t len)
{
struct rt_i2c_msg msgs[2];
msgs[0].addr = dev->client_addr;
msgs[0].flags = RT_I2C_WR;
msgs[0].buf = &reg;
msgs[0].len = FT_REGITER_LEN;
msgs[1].addr = dev->client_addr;
msgs[1].flags = RT_I2C_RD;
msgs[1].buf = data;
msgs[1].len = len;
if (rt_i2c_transfer(dev->bus, msgs, 2) == 2)
{
return RT_EOK;
}
else
{
return -RT_ERROR;
}
}
static rt_int16_t pre_x[FT_MAX_TOUCH];
static rt_int16_t pre_y[FT_MAX_TOUCH];
static rt_int16_t pre_w[FT_MAX_TOUCH];
static rt_uint8_t s_tp_dowm[FT_MAX_TOUCH];
static void ft5446_touch_up(void *buf, rt_int8_t id)
{
struct rt_touch_data *read_data = (struct rt_touch_data *)buf;
if (s_tp_dowm[id] == 1)
{
s_tp_dowm[id] = 0;
read_data[id].event = RT_TOUCH_EVENT_UP;
}
else
{
read_data[id].event = RT_TOUCH_EVENT_NONE;
}
read_data[id].timestamp = rt_touch_get_ts();
read_data[id].width = pre_w[id];
read_data[id].x_coordinate = pre_x[id];
read_data[id].y_coordinate = pre_y[id];
read_data[id].track_id = id;
pre_x[id] = -1; /* last point is none */
pre_y[id] = -1;
pre_w[id] = -1;
//LOG_I("%s (%d)\n", __func__, id);
}
static void ft5446_touch_down(void *buf, rt_int8_t id, rt_int16_t x, rt_int16_t y, rt_int16_t w)
{
struct rt_touch_data *read_data = (struct rt_touch_data *)buf;
if (s_tp_dowm[id] == 1)
{
read_data[id].event = RT_TOUCH_EVENT_MOVE;
}
else
{
read_data[id].event = RT_TOUCH_EVENT_DOWN;
s_tp_dowm[id] = 1;
}
read_data[id].timestamp = rt_touch_get_ts();
read_data[id].width = w;
read_data[id].x_coordinate = x;
read_data[id].y_coordinate = y;
read_data[id].track_id = id;
pre_x[id] = x; /* save last point */
pre_y[id] = y;
pre_w[id] = w;
//LOG_I("%s (%d %d %d %d)\n", __func__, id, x, y, w );
}
static int8_t pre_id[FT_MAX_TOUCH];
static S_FT_REGMAP sFtRegMap;
static rt_uint8_t pre_touch = 0;
static rt_size_t ft5446_read_point(struct rt_touch_device *touch, void *buf, rt_size_t read_num)
{
int i;
rt_err_t error = 0;
rt_int32_t touch_event, touchid;
RT_ASSERT(touch);
RT_ASSERT(buf);
RT_ASSERT(read_num != 0);
RT_ASSERT(read_num <= FT_MAX_TOUCH);
error = ft5446_read_reg(&ft5446_client, 0, (rt_uint8_t *)&sFtRegMap, sizeof(sFtRegMap));
if (error)
{
LOG_E("get touch data failed, err:%d\n", error);
goto exit_read_point;
}
if (sFtRegMap.u8TDStatus > FT_MAX_TOUCH)
{
LOG_E("FW report max point:%d > panel info. max:%d\n", sFtRegMap.u8TDStatus, FT_MAX_TOUCH);
goto exit_read_point;
}
if (pre_touch > sFtRegMap.u8TDStatus) /* point up */
{
for (i = 0; i < FT_MAX_TOUCH; i++)
{
rt_uint8_t j;
for (j = 0; j < sFtRegMap.u8TDStatus; j++) /* this time touch num */
{
touchid = sFtRegMap.m_sTP[j].u8TouchID;
if (touchid >= 0x0f)
continue;
if (pre_id[i] == touchid) /* this id is not free */
break;
}
if ((j == sFtRegMap.u8TDStatus) && (pre_id[i] != -1)) /* free this node */
{
// LOG_I("free %d tid=%d\n", i, pre_id[i]);
ft5446_touch_up(buf, pre_id[i]);
pre_id[i] = -1;
}
}
}
for (i = 0; i < sFtRegMap.u8TDStatus; i++)
{
touch_event = sFtRegMap.m_sTP[i].u8EvtFlag;
touchid = sFtRegMap.m_sTP[i].u8TouchID;
//LOG_I("(%d/%d) %d %d\n", i, sFtRegMap.u8TDStatus, touchid, touch_event );
if (touchid >= 0x0f)
continue;
pre_id[i] = touchid;
if ((touch_event == FT_EVENTFLAG_PRESS_DOWN) || (touch_event == FT_EVENTFLAG_CONTACT))
{
rt_uint16_t x, y, w;
x = ((uint16_t)sFtRegMap.m_sTP[i].u8X_11_8 << 8) | sFtRegMap.m_sTP[i].u8X_7_0;
y = ((uint16_t)sFtRegMap.m_sTP[i].u8Y_11_8 << 8) | sFtRegMap.m_sTP[i].u8Y_7_0;
w = sFtRegMap.m_sTP[i].m_u8Weight;
//LOG_I("[%d] (%d %d %d %d)\n", touch_event, touchid, x, y, w );
if (x >= touch->info.range_x || y >= touch->info.range_y)
{
LOG_E("invalid position, X[%d,%u,%d], Y[%d,%u,%d]\n",
0, x, touch->info.range_x,
0, y, touch->info.range_y);
continue;
}
ft5446_touch_down(buf, touchid, x, y, w);
}
else
{
// Up
ft5446_touch_up(buf, touchid);
}
} // for (i = 0; i < sFtRegMap.u8TDStatus; i++)
pre_touch = sFtRegMap.u8TDStatus;
return read_num;
exit_read_point:
pre_touch = 0;
return 0;
}
static rt_err_t ft5446_control(struct rt_touch_device *touch, int cmd, void *arg)
{
switch (cmd)
{
case RT_TOUCH_CTRL_GET_INFO:
{
struct rt_touch_info *info = (struct rt_touch_info *)arg;
RT_ASSERT(arg);
rt_memcpy(info, &touch->info, sizeof(struct rt_touch_info));
break;
}
case RT_TOUCH_CTRL_GET_ID:
break;
case RT_TOUCH_CTRL_SET_X_RANGE:
break;
case RT_TOUCH_CTRL_SET_Y_RANGE:
break;
case RT_TOUCH_CTRL_SET_X_TO_Y:
break;
case RT_TOUCH_CTRL_SET_MODE:
break;
default:
break;
}
return RT_EOK;
}
static struct rt_touch_ops ft5446_touch_ops =
{
.touch_readpoint = ft5446_read_point,
.touch_control = ft5446_control,
};
static void ft5446_init(struct rt_i2c_client *dev)
{
ft5446_write_reg(dev, 0x0, 0);
}
int rt_hw_ft5446_init(const char *name, struct rt_touch_config *cfg)
{
struct rt_touch_device *touch_device = RT_NULL;
rt_uint32_t bus_speed = 400000;
touch_device = (struct rt_touch_device *)rt_malloc(sizeof(struct rt_touch_device));
if (touch_device == RT_NULL)
{
LOG_E("touch device malloc fail");
return -RT_ERROR;
}
rt_memset((void *)touch_device, 0, sizeof(struct rt_touch_device));
/* hw init*/
rt_pin_mode(*(rt_uint8_t *)cfg->user_data, PIN_MODE_OUTPUT);
rt_pin_write(*(rt_uint8_t *)cfg->user_data, PIN_LOW);
rt_thread_delay(5);
rt_pin_write(*(rt_uint8_t *)cfg->user_data, PIN_HIGH);
rt_thread_delay(200);
rt_pin_mode(cfg->irq_pin.pin, cfg->irq_pin.mode);
ft5446_client.bus = (struct rt_i2c_bus_device *)rt_device_find(cfg->dev_name);
if (ft5446_client.bus == RT_NULL)
{
LOG_E("Can't find %s device", cfg->dev_name);
return -RT_ERROR;
}
if (rt_device_open((rt_device_t)ft5446_client.bus, RT_DEVICE_FLAG_RDWR) != RT_EOK)
{
LOG_E("open %s device failed", cfg->dev_name);
return -RT_ERROR;
}
if (rt_device_control((rt_device_t)ft5446_client.bus, RT_I2C_DEV_CTRL_CLK, &bus_speed) != RT_EOK)
{
LOG_E("control %s device failed", cfg->dev_name);
return -RT_ERROR;
}
ft5446_client.client_addr = FT5446_ADDRESS;
ft5446_init(&ft5446_client);
rt_memset(&pre_x[0], 0xff, FT_MAX_TOUCH * sizeof(int16_t));
rt_memset(&pre_y[0], 0xff, FT_MAX_TOUCH * sizeof(int16_t));
rt_memset(&pre_w[0], 0xff, FT_MAX_TOUCH * sizeof(int16_t));
rt_memset(&s_tp_dowm[0], 0, FT_MAX_TOUCH * sizeof(int16_t));
rt_memset(&pre_id[0], 0xff, FT_MAX_TOUCH * sizeof(int8_t));
/* register touch device */
touch_device->info.type = RT_TOUCH_TYPE_CAPACITANCE;
touch_device->info.vendor = RT_TOUCH_VENDOR_FT;
touch_device->info.range_x = BSP_LCD_WIDTH;
touch_device->info.range_y = BSP_LCD_HEIGHT;
touch_device->info.point_num = FT_MAX_TOUCH;
rt_memcpy(&touch_device->config, cfg, sizeof(struct rt_touch_config));
touch_device->ops = &ft5446_touch_ops;
rt_hw_touch_register(touch_device, name, RT_DEVICE_FLAG_INT_RX, RT_NULL);
LOG_I("touch device ft5446 init success");
return RT_EOK;
}
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