修复软件包
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# FT5426
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## 简介
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ft5426 软件包提供了使用触摸芯片 ft5426 基本功能，并且本软件包已经对接到了 Touch 框架，通过 Touch 框架，开发者可以快速的将此触摸芯片驱动起来。
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## 支持情况
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| **FT6206 触摸芯片** | **支持情况** |
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| :-------: | :--------: |
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| I2C 通讯接口 | √ |
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| 中断的工作模式 | |
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| 轮询的工作模式 | √ |
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## 使用说明
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### 软件包依赖
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- RT-Thread 4.0.0+
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```
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\ | /
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- RT - Thread Operating System
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/ | \ 4.0.3 build Jul 23 2020
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2006 - 2020 Copyright by rt-thread team
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msh >
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```
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- Touch 组件，在 menuconfig 中开启 Touch 组件的路径如下：
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```
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RT-Thread Components --->
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Device Drivers --->
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[*] Using Touch device drivers
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```
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- I2C 驱动：ft5426 设备使用 I2C 进行数据通讯，需要系统 I2C 驱动支持，在 menuconfig 中开启 I2C 驱动的路径如下：
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```
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Hardware Drivers Config --->
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On-chip Peripheral Drivers --->
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[*] Enable I2C1 BUS (software simulation) --->
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```
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### 获取软件包
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使用 ft5426 软件包需要在 RT-Thread 的包管理中选中它，具体路径如下：
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```
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RT-Thread online packages --->
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peripheral libraries and drivers --->
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touch drivers --->
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FT5426 touch driver package.
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Version (latest) --->
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[ ] Enable ft5426 example (NEW)
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```
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配置完成后，使用 `pkgs --update` 更新软件包。
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### 使用软件包
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ft5426 软件包初始化函数如下所示：
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```c
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int rt_hw_ft5426_init(const char *name, struct rt_touch_config *cfg)
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```
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该函数需要由用户调用，函数主要完成的功能有：
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- 设备配置和初始化（根据传入的配置信息，配置接口设备）；
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- 注册相应的传感器设备，完成 ft5426 设备的注册；
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#### 初始化示例
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```c
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int rt_hw_ft5426_init(void)
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{
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struct rt_touch_config config;
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config.dev_name = "i2c1";
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rt_hw_ft5426_init("ft5426", &config);
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return 0;
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}
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INIT_ENV_EXPORT(rt_hw_ft5426_init);
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```
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## 注意事项
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- ft5426 最大支持十个触摸点，该软件包目前仅提供一个触点。
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- 在初始化示例中，需要根据自己板子上的实际连接情况，修改 I2C 的设备名。
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## 联系人信息
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- 维护人：[liuduanfei](https://github.com/liuduanfei)
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- 软件包主页：<https://github.com/liuduanfei/ft5426>
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@@ -0,0 +1,20 @@
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from building import *
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Import('rtconfig')
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src = []
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cwd = GetCurrentDir()
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# add ft6206 src files.
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if GetDepend('PKG_USING_FT5426'):
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src += Glob('src/ft5426.c')
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if GetDepend('PKG_USING_FT5426_SAMPLE'):
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src += Glob('examples/example_ft5426.c')
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# add ft5426 include path.
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path = [cwd + '/inc']
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# add src and include to group.
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group = DefineGroup('ft5426', src, depend = ['PKG_USING_FT5426'], CPPPATH = path)
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Return('group')
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/*
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* Copyright (c) 2006-2020, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2019-07-22 liuduanfei the first version
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*/
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#ifndef _FT5426_H_
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#define _FT5426_H_
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#include "drivers/touch.h"
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int rt_hw_ft5426_init(const char *name, struct rt_touch_config *cfg);
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#endif /* _FT5426_H_ */
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/*
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* Copyright (c) 2006-2020, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2019-07-22 liuduanfei 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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#include "drivers/touch.h"
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#define DBG_TAG "ft5426"
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#define DBG_LVL DBG_LOG
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#include <rtdbg.h>
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static void ft54x6_write_reg(struct rt_i2c_bus_device *bus, rt_uint8_t reg, rt_uint8_t value)
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{
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struct rt_i2c_msg msg = {0};
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rt_uint8_t buf[2];
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buf[0] = reg;
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buf[1] = value;
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msg.addr = (0x70>>1);
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msg.flags = RT_I2C_WR;
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msg.buf = buf;
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msg.len = 2;
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if (rt_i2c_transfer(bus, &msg, 1) != 1)
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{
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LOG_D("ft5426 write register error");
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}
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}
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static void ft54x6_read_reg(struct rt_i2c_bus_device *bus, rt_uint8_t reg, rt_uint8_t *buf, rt_uint8_t len)
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{
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struct rt_i2c_msg msg = {0};
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rt_uint8_t temp_reg;
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temp_reg = reg;
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msg.addr = (0x70>>1);
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msg.flags = RT_I2C_WR;
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msg.buf = &temp_reg;
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msg.len = 1;
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if (rt_i2c_transfer(bus, &msg, 1) != 1)
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{
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LOG_D("ft5426 write register error");
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}
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msg.addr = (0x70>>1);
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msg.flags = RT_I2C_RD;
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msg.buf = buf;
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msg.len = len;
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if (rt_i2c_transfer(bus, &msg, 1) != 1)
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{
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LOG_D("ft5426 read register error");
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}
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}
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static void ft5426_init(struct rt_i2c_bus_device *bus)
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{
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ft54x6_write_reg(bus, 0x00, 0);
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ft54x6_write_reg(bus, 0xA4, 0);
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ft54x6_write_reg(bus, 0x80, 22);
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ft54x6_write_reg(bus, 0x88, 12);
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}
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static rt_size_t ft5426_readpoint(struct rt_touch_device *touch, void *data, rt_size_t touch_num)
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{
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rt_uint8_t buf[4];
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struct rt_i2c_bus_device * i2c_bus = RT_NULL;
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static rt_uint8_t s_tp_down = 0;
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static uint16_t x_save, y_save;
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static rt_uint8_t s_count = 0;
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struct rt_touch_data *temp_data;
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temp_data = (struct rt_touch_data *)data;
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temp_data->event = RT_TOUCH_EVENT_NONE;
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temp_data->timestamp = rt_touch_get_ts();
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i2c_bus = rt_i2c_bus_device_find(touch->config.dev_name);
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if (i2c_bus == RT_NULL)
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{
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LOG_D("can not find i2c bus");
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return -RT_EIO;
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}
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ft54x6_read_reg(i2c_bus, 2, &buf[0], 1);
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if (buf[0] == 0)
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{
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if (s_tp_down == 1)
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{
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if (++s_count > 2)
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{
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s_count = 0;
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s_tp_down = 0;
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temp_data->event = RT_TOUCH_EVENT_UP;
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temp_data->timestamp = rt_touch_get_ts();
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temp_data->x_coordinate = x_save;
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temp_data->y_coordinate = y_save;
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}
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}
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return RT_EOK;
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}
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s_count = 0;
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ft54x6_read_reg(i2c_bus, 3, buf, touch_num * 4);
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temp_data->x_coordinate = ((buf[0]&0X0F)<<8)+buf[1];
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temp_data->y_coordinate = ((buf[2]&0X0F)<<8)+buf[3];
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temp_data->timestamp = rt_touch_get_ts();
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if (s_tp_down == 0)
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{
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s_tp_down = 1;
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temp_data->event = RT_TOUCH_EVENT_DOWN;
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}
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else
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{
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temp_data->event = RT_TOUCH_EVENT_MOVE;
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}
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x_save = temp_data->x_coordinate;
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y_save = temp_data->y_coordinate;
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return RT_EOK;
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}
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static rt_err_t ft5426_control(struct rt_touch_device *touch, int cmd, void *arg)
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{
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struct rt_touch_info *info;
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switch(cmd)
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{
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case RT_TOUCH_CTRL_GET_ID:
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break;
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case RT_TOUCH_CTRL_GET_INFO:
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info = (struct rt_touch_info *)arg;
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info->point_num = touch->info.point_num;
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info->range_x = touch->info.range_x;
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info->range_y = touch->info.range_y;
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info->type = touch->info.type;
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info->vendor = touch->info.vendor;
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break;
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case RT_TOUCH_CTRL_SET_MODE:
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break;
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case RT_TOUCH_CTRL_SET_X_RANGE:
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break;
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case RT_TOUCH_CTRL_SET_Y_RANGE:
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break;
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case RT_TOUCH_CTRL_SET_X_TO_Y:
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break;
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case RT_TOUCH_CTRL_DISABLE_INT:
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break;
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case RT_TOUCH_CTRL_ENABLE_INT:
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break;
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default:
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break;
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}
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return RT_EOK;
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}
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const struct rt_touch_ops ops =
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{
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ft5426_readpoint,
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ft5426_control,
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};
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struct rt_touch_info info =
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{
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RT_TOUCH_TYPE_CAPACITANCE,
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RT_TOUCH_VENDOR_FT,
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1,
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480,
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800,
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};
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int rt_hw_ft5426_init(const char *name, struct rt_touch_config *cfg)
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{
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rt_touch_t touch_device = RT_NULL;
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struct rt_i2c_bus_device * i2c_bus = RT_NULL;
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touch_device = (rt_touch_t)rt_calloc(1, sizeof(struct rt_touch_device));
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if (touch_device == RT_NULL)
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{
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return -RT_ENOMEM;
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}
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i2c_bus = rt_i2c_bus_device_find(cfg->dev_name);
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if (i2c_bus == RT_NULL)
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{
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return -RT_EIO;
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}
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ft5426_init(i2c_bus);
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rt_memcpy(&touch_device->config, cfg, sizeof(struct rt_touch_config));
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touch_device->info = info;
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touch_device->ops = &ops;
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if (rt_hw_touch_register(touch_device, name, RT_DEVICE_FLAG_RDONLY, RT_NULL) != RT_EOK)
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{
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return -RT_EIO;
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}
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return RT_EOK;
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}
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