摘要:涂鸦模组中的固件应为通用固件,通用固件支持,两种波特率自适应。涂鸦智能将每个功能点抽象成数据点,数据点定义成不同的类型,例如布尔枚举数值等。指定通信协议下事件的。上报设备状态函数注册获取连接状态轮询串口数据在中调用。
Tuya MCU SDK Arduino Library 基于涂鸦Wi-Fi 通用对接方案进行开发的,设备 MCU 通过串口与 Wi-Fi 模组连接实现设备联网。涂鸦模组中的固件应为通用固件,通用固件支持9600,115200
两种波特率自适应。
注意点:
Arduino板子 + 涂鸦模块
的开发方式,据说后期可以多带带模块开发。- 串口通信
https://gitee.com/ant_onio/tuya-wifi-mcu-sdk-arduino-library 点击下载
解压到自己的电脑路径(此电脑->文档->Arduino->libraries)
Arduino IDE -> 工具 -> 管理库 -> 搜索 tuya-> 安装最新版本
记住一点,这种方式是mcu + module
串口通信开发方式
简单来说,肯定数据是
不断处理串口通信
,那么从另外一个点来说就是模组已经内置了串口协议数据处理逻辑。
博哥大概代码看了一下:
class TuyaUart{public: // 主要是定义串口通信buffer缓存大小 volatile unsigned char wifi_uart_rx_buf[PROTOCOL_HEAD + WIFI_UART_RECV_BUF_LMT]; //Serial data processing buffer volatile unsigned char wifi_uart_tx_buf[PROTOCOL_HEAD + WIFIR_UART_SEND_BUF_LMT]; //Serial receive buffer volatile unsigned char wifi_data_process_buf[PROTOCOL_HEAD + WIFI_DATA_PROCESS_LMT]; //Serial port send buffer TuyaUart(void); ~TuyaUart(void); void wifi_protocol_init(void); // 接收数据 unsigned char uart_receive_input(unsigned char data); void uart_receive_buff_input(unsigned char value[], unsigned short data_len); unsigned char take_byte_rxbuff(void); unsigned char with_data_rxbuff(void); // 传输发送数据 void uart_transmit_output(unsigned char value); void wifi_uart_write_data(unsigned char *in, unsigned short len); void wifi_uart_write_frame(unsigned char fr_type, unsigned char fr_ver, unsigned short len); unsigned short set_wifi_uart_byte(unsigned short dest, unsigned char byte); unsigned short set_wifi_uart_buffer(unsigned short dest, const unsigned char *src, unsigned short len); /* serial set */ bool _isHWSerial; // 串口设置 void set_serial(HardwareSerial *serial); void set_serial(SoftwareSerial *serial); void begin(long baud_rate); char read(void); size_t write(char value); int available(void);private: volatile unsigned char *rx_buf_in; volatile unsigned char *rx_buf_out; Stream *_port;};
class TuyaTools{public: TuyaTools(void); ~TuyaTools(void); unsigned char hex_to_bcd(unsigned char Value_H, unsigned char Value_L); // 计算字符串长度 unsigned long my_strlen(unsigned char *str); // 设置字符串 void *my_memset(void *src, unsigned char ch, unsigned short count); // 内存拷贝 void *my_memcpy(void *dest, const void *src, unsigned short count); // 字符串拷贝 char *my_strcpy(char *dest, const char *src); // 字符串对比 int my_strcmp(char *s1, char *s2); // int 转字节数组 void int_to_byte(unsigned long number, unsigned char value[4]); // 字节数组 转int unsigned long byte_to_int(const unsigned char value[4]); unsigned char get_check_sum(unsigned char *pack, unsigned short pack_len);private:};
class TuyaDataPoint{public: // TuyaDataPoint(void); // ~TuyaDataPoint(void); // 下发节点数据 unsigned char mcu_get_dp_download_bool(const unsigned char value[], unsigned short len); unsigned char mcu_get_dp_download_enum(const unsigned char value[], unsigned short len); unsigned long mcu_get_dp_download_value(const unsigned char value[], unsigned short len); // 上报节点数据 unsigned char mcu_dp_raw_update(unsigned char dpid, const unsigned char value[], unsigned short len); unsigned char mcu_dp_bool_update(unsigned char dpid, unsigned char value); unsigned char mcu_dp_value_update(unsigned char dpid, unsigned long value); unsigned char mcu_dp_string_update(unsigned char dpid, const unsigned char value[], unsigned short len); unsigned char mcu_dp_enum_update(unsigned char dpid, unsigned char value); unsigned char mcu_dp_fault_update(unsigned char dpid, unsigned long value);private:};
注意区分一下数据类型。
DP为 Data Point 的缩写,即数据点,偶尔被称为 DP 点,表示智能设备所具备的功能点。
True
或 False
。DPID:指定通信协议下 DP 事件的 ID。
节点类型:
#define DP_TYPE_RAW 0x00 //RAW type#define DP_TYPE_BOOL 0x01 //bool type#define DP_TYPE_VALUE 0x02 //value type#define DP_TYPE_STRING 0x03 //string type#define DP_TYPE_ENUM 0x04 //enum type#define DP_TYPE_BITMAP 0x05 //fault type
在Arduino中使用该库进行编程开发时,必须在你的Arduino工程文件中包含 TuyaWifi.h 头文件。
一般很多sdk的开发方式都是:
- 1、创建对象 构造方法
- 2、初始化 init
- 3、回调配置、信息注册 register、callbackHandler
- 4、不断轮询处理响应
PID通过在 Tuya IoT平台 上创建产品获取,wifi类的长度一般为16,mcu_ver 这个参数是软件的版本号。
在Tuya IoT平台创建产品,获取产品DP点信息。
DP为 Data Point 的缩写,即数据点,偶尔被称为 DP 点,表示智能设备所具备的功能点。
True
或 False
。DPID:指定通信协议下 DP 事件的 ID。
MCU SDK需要知道你创建了哪些DP点,他们是什么类型的。
/** * @description: MCU set wifi working mode * @param {unsigned char} mode : enter mode * 0(SMART_CONFIG):enter smartconfig mode * 1(AP_CONFIG):enter AP mode * @return {*} */void TuyaWifi::mcu_set_wifi_mode(unsigned char mode);
当APP控制设备的时候,会从云端下发对应的DP命令到设备,设备对数据进行解析后,对下发的命令执行相对于的动作。
对下发命令的处理,通过回调函数来调用,所以我们需要把你的处理函数注册一下。
伪代码:
//register DP download processing callback function my_device.dp_process_func_register(dp_process);/** * @description: DP download callback function. * @param {unsigned char} dpid * @param {const unsigned char} value * @param {unsigned short} length * @return {unsigned char} */unsigned char dp_process(unsigned char dpid, const unsigned char value[], unsigned short length){ switch (dpid) { case DPID_BOOL: DebugSerial.println("Bool type:"); dp_bool_value = my_device.mcu_get_dp_download_data(dpid, value, length); DebugSerial.println(dp_bool_value); /* After processing the download DP command, the current status should be reported. */ my_device.mcu_dp_update(DPID_BOOL, dp_bool_value, 1); break; case DPID_VALUE: DebugSerial.println("Value type:"); dp_value_value = my_device.mcu_get_dp_download_data(DPID_VALUE, value, length); DebugSerial.println(dp_value_value); /* After processing the download DP command, the current status should be reported. */ my_device.mcu_dp_update(DPID_VALUE, dp_value_value, 1); break; case DPID_ENUM: DebugSerial.println("Enum type:"); dp_enum_value = my_device.mcu_get_dp_download_data(dpid, value, length); DebugSerial.println(dp_enum_value); /* After processing the download DP command, the current status should be reported. */ my_device.mcu_dp_update(DPID_ENUM, dp_enum_value, 1); break; case DPID_STRING: DebugSerial.println("String type:"); /* */ for (unsigned int i=0; i<length; i++) { dp_string_value[i] = value[i]; DebugSerial.write(dp_string_value[i]); } DebugSerial.println(""); /* After processing the download DP command, the current status should be reported. */ my_device.mcu_dp_update(DPID_STRING, dp_string_value, length); break; case DPID_RAW: DebugSerial.println("Raw type:"); /* */ for (unsigned int i=0; i<length; i++) { dp_raw_value[i] = value[i]; DebugSerial.write(dp_raw_value[i]); } DebugSerial.println(""); /* After processing the download DP command, the current status should be reported. */ my_device.mcu_dp_update(DPID_RAW, dp_raw_value, length); break; default: break; } return SUCCESS;}
这里得注意一个方法:
mcu_get_dp_download_data (`下发DP数据处理`)
对字节数组进行数据解析。
/* char * */ unsigned char mcu_dp_update(unsigned char dpid, const unsigned char value[], unsigned short len); /* char raw */ /* unsigned long / long */ unsigned char mcu_dp_update(unsigned char dpid, unsigned long value, unsigned short len); unsigned char mcu_dp_update(unsigned char dpid, long value, unsigned short len); /* unsigned char / char */ unsigned char mcu_dp_update(unsigned char dpid, unsigned char value, unsigned short len); unsigned char mcu_dp_update(unsigned char dpid, char value, unsigned short len); /* unsigned int / int */ unsigned char mcu_dp_update(unsigned char dpid, unsigned int value, unsigned short len); unsigned char mcu_dp_update(unsigned char dpid, int value, unsigned short len);
基本上大同小异。注意一下dpid和数据类型即可。
#include TuyaWifi my_device;#define DPID_SWITCH 20//Record the current status of the ledunsigned char switch_value = 0;...void setup() { ... //register DP download processing callback function my_device.dp_update_all_func_register(dp_update_all); ...}/** * @description: Upload all DP status of the current device. * @param {*} * @return {*} */void dp_update_all(void){ my_device.mcu_dp_update(DPID_SWITCH, switch_v
/** * @description: Wifi serial port processing service * @param {*} * @return {*} */void TuyaWifi::uart_service(void)
在arduino loop中调用。不断检测串口数据。
/* * @FileName: DataPointType.ino * @Author: Tuya * @Email: * @LastEditors: Tuya * @Date: 2021-04-19 14:31:52 * @LastEditTime: 2021-04-28 19:47:36 * @Copyright: HANGZHOU TUYA INFORMATION TECHNOLOGY CO.,LTD * @Company: http://www.tuya.com * @Description: * @Github:https://github.com/tuya/tuya-wifi-mcu-sdk-arduino-library */#include #include TuyaWifi my_device;SoftwareSerial DebugSerial(8,9);/* Current LED status */unsigned char led_state = 0;/* Connect network button pin */int wifi_key_pin = 7;/* Data point define */#define DPID_BOOL 101#define DPID_VALUE 102#define DPID_ENUM 103#define DPID_STRING 104#define DPID_RAW 105#define DPID_FAULT 106/* Current device DP values */unsigned char dp_bool_value = 0;long dp_value_value = 0;unsigned char dp_enum_value = 0;unsigned char dp_string_value[8] = {"Hi,Tuya"};unsigned char dp_raw_value[8] = {0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef};int dp_fault_value = 0x01;/* Stores all DPs and their types. PS: array[][0]:dpid, array[][1]:dp type. * dp type(TuyaDefs.h) : DP_TYPE_RAW, DP_TYPE_BOOL, DP_TYPE_VALUE, DP_TYPE_STRING, DP_TYPE_ENUM, DP_TYPE_BITMAP*/unsigned char dp_array[][2] = { {DPID_BOOL, DP_TYPE_BOOL}, {DPID_VALUE, DP_TYPE_VALUE}, {DPID_ENUM, DP_TYPE_ENUM}, {DPID_STRING, DP_TYPE_STRING}, {DPID_RAW, DP_TYPE_RAW}, {DPID_FAULT, DP_TYPE_BITMAP},};unsigned char pid[] = {"xxxxxxxxxxx"}; // 填上自己的产品IDunsigned char mcu_ver[] = {"1.0.0"};/* last time */unsigned long last_time = 0;void setup(){ Serial.begin(9600); DebugSerial.begin(9600); //Initialize led port, turn off led. pinMode(LED_BUILTIN, OUTPUT); digitalWrite(LED_BUILTIN, LOW); //Initialize networking keys. pinMode(wifi_key_pin, INPUT_PULLUP); // 三部曲 —— 初始化、配置、注册回调 //Enter the PID and MCU software version my_device.init(pid, mcu_ver); //incoming all DPs and their types array, DP numbers my_device.set_dp_cmd_total(dp_array, 6); //register DP download processing callback function my_device.dp_process_func_register(dp_process); //register upload all DP callback function my_device.dp_update_all_func_register(dp_update_all); last_time = millis();}void loop(){ // 不断轮询 my_device.uart_service(); //Enter the connection network mode when Pin7 is pressed. if (digitalRead(wifi_key_pin) == LOW) { delay(80); if (digitalRead(wifi_key_pin) == LOW) { my_device.mcu_set_wifi_mode(SMART_CONFIG); } } /* LED blinks when network is being connected */ if ((my_device.mcu_get_wifi_work_state() != WIFI_LOW_POWER) && (my_device.mcu_get_wifi_work_state() != WIFI_CONN_CLOUD) && (my_device.mcu_get_wifi_work_state() != WIFI_SATE_UNKNOW)) { if (millis() - last_time >= 500) { last_time = millis(); /* Toggle current LED status */ if (led_state == LOW) { led
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