基于STM32+NBIOT(BC26)设计的物联网观赏鱼缸-腾讯云开发者社区-腾讯云 (2024)

上传腾讯云-微信小程序通信数据的属性值：ds18b20_max 温度阀值 读写权限 整型adc_hp_max 水质阀值 读写权限 整型time_food 增氧间隔 读写权限 整型auto_mode 控制模式 读写权限 布尔类型water_hp 水质 只读权限 整型temp_data 水温只读权限 浮点数类型BH1750 光强只读权限 整型MQ135 氨气 只读权限 整型oxygen_sw 增氧控制 读写权限 布尔类型heat_sw 加热控制 读写权限 布尔类型led_sw 照明灯控制 读写权限 布尔类型

$thing/up/property/2ZYN8YF7CM/${deviceName} 发布属性上报$thing/up/property/2ZYN8YF7CM/${deviceName}订阅属性下发与属性上报响应

产品密匙：WCk1aGDvGyg34+KolnKMqw==产品ID：2ZYN8YF7CM

目前物联网通信支持 MQTT 标准协议接入(兼容3.1.1版本协议)，具体的协议请参见 MQTT 3.1.1 协议文档。和标准 MQTT 区别1. 支持 MQTT 的 PUB、SUB、PING、PONG、CONNECT、DISCONNECT、UNSUB 等报文。2. 支持 cleanSession。3. 不支持 will、retain msg。4. 不支持 QOS2。

#!/usr/bin/python# -*- coding: UTF-8 -*-import base64import hashlibimport hmacimport randomimport stringimport timeimport sys# 生成指定长度的随机字符串def RandomConnid(length): return ''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(length))# 生成接入物联网通信平台需要的各参数def IotHmac(productID, devicename, devicePsk): # 1. 生成 connid 为一个随机字符串，方便后台定位问题 connid = RandomConnid(5) # 2. 生成过期时间，表示签名的过期时间,从纪元1970年1月1日 00:00:00 UTC 时间至今秒数的 UTF8 字符串 # 将当前时间往后推迟5年 expiry = int(time.time()) + 5 * 365 * 24 * 60 * 60 # 3. 生成 MQTT 的 clientid 部分, 格式为 ${productid}${devicename} clientid = "{}{}".format(productID, devicename) # 4. 生成 MQTT 的 username 部分, 格式为 ${clientid};${sdkappid};${connid};${expiry} username = "{};12010126;{};{}".format(clientid, connid, expiry) # 5. 对 username 进行签名，生成token secret_key = devicePsk.encode('utf-8') # convert to bytes data_to_sign = username.encode('utf-8') # convert to bytes secret_key = base64.b64decode(secret_key) # this is still bytes token = hmac.new(secret_key, data_to_sign, digestmod=hashlib.sha256).hexdigest() # 6. 根据物联网通信平台规则生成 password 字段 password = "{};{}".format(token, "hmacsha256") return { "clientid" : clientid, "username" : username, "password" : password }if __name__ == '__main__': # 参数分别填入: 产品ID,设备名称,设备密匙 print(IotHmac("2ZYN8YF7CM","dev1","WCk1aGDvGyg34+KolnKMqw=="))

{'clientid': '2ZYN8YF7CMdev1', 'username': '2ZYN8YF7CMdev1;12010126;HULWJ;1705853339', 'password': '26725d9cf937e3d054cc51fa91338d81ddebc072ae1fa65c564a068d8bb3e0c7;hmacsha256'}

clientid: 2ZYN8YF7CMdev1username: 2ZYN8YF7CMdev1;12010126;HULWJ;1705853339password: 26725d9cf937e3d054cc51fa91338d81ddebc072ae1fa65c564a068d8bb3e0c7;hmacsha256

$thing/up/property/2ZYN8YF7CM/dev1

$thing/down/property/2ZYN8YF7CM/dev1

{"method":"report","clientToken":"123","params":{"ds18b20_max":20,"adc_hp_max":20,"time_food":5,"auto_mode":1,"water_hp":80,"temp_data":12.5,"BH1750":300,"MQ135":20,"oxygen_sw":1,"heat_sw":0,"led_sw":0}}

2ZYN8YF7CM.iotcloud.tencentdevices.com

IP地址:175.178.30.200端口号:1883客户端ID: 2ZYN8YF7CMdev1用户名: 2ZYN8YF7CMdev1;12010126;HULWJ;1705853339密码: 26725d9cf937e3d054cc51fa91338d81ddebc072ae1fa65c564a068d8bb3e0c7;hmacsha256订阅主题: $thing/down/property/2ZYN8YF7CM/dev1发布主题: $thing/up/property/2ZYN8YF7CM/dev1发布数据格式:{"method":"report","clientToken":"123","params":{"ds18b20_max":20,"adc_hp_max":20,"time_food":5,"auto_mode":1,"water_hp":80,"temp_data":12.5,"BH1750":300,"MQ135":20,"oxygen_sw":1,"heat_sw":0,"led_sw":0}}

len:129,Data:$$thing/down/property/2ZYN8YF7CM/dev1{"method":"control","clientToken":"v2530389322mbXir::5NMCGSjgp","params":{"ds18b20_max":21}}len:125,Data:$thing/down/property/2ZYN8YF7CM/dev1{"method":"control","clientToken":"v2530388538MKtZG::67Y#YRmFN","params":{"time_food":6}}len:128,Data:$$thing/down/property/2ZYN8YF7CM/dev1{"method":"control","clientToken":"v2530389322sDtoc::EnQpzyukd","params":{"adc_hp_max":22}}len:125,Data:$thing/down/property/2ZYN8YF7CM/dev1{"method":"control","clientToken":"v2530388538PaAHn::@KgWjdE1V","params":{"auto_mode":0}}len:125,Data:$thing/down/property/2ZYN8YF7CM/dev1{"method":"control","clientToken":"v2530388538XYQqA::WsGV4K0uo","params":{"auto_mode":1}}len:127,Data:$$thing/down/property/2ZYN8YF7CM/dev1{"method":"control","clientToken":"v2529763559fdKIy::addUie4XDm","params":{"oxygen_sw":0}}len:125,Data:$thing/down/property/2ZYN8YF7CM/dev1{"method":"control","clientToken":"v2529763559OmPZY::vkCb-o5o%","params":{"oxygen_sw":1}}len:124,Data:$thing/down/property/2ZYN8YF7CM/dev1{"method":"control","clientToken":"v2529763559GCZHF::o3Zg6m9sEq","params":{"heat_sw":1}}len:123,Data:$thing/down/property/2ZYN8YF7CM/dev1{"method":"control","clientToken":"v2530389322DuDjB::CgY5$Gx8Z","params":{"heat_sw":0}}len:123,Data:$thing/down/property/2ZYN8YF7CM/dev1{"method":"control","clientToken":"v2529763559opcLp::MdJWtA8ai7","params":{"led_sw":1}}len:122,Data:$thing/down/property/2ZYN8YF7CM/dev1{"method":"control","clientToken":"v2530389322SZvJM::GYX7QT$T#","params":{"led_sw":0}}

硬件连接方式:【1】 TFT 1.44 寸彩屏接线GND 电源地VCC 接5V或3.3v电源SCL 接PC8（SCL）SDA 接PC9（SDA）RST 接PC10DC 接PB7CS 接PB8BL 接PB11【2】BC26-NBIOT模块PA2(TX)--RXD 模块接收脚PA3(RX)--TXD 模块发送脚GND---GND 地VCC---VCC 电源（5.0V）【3】DS18B20温度传感器VCC--VCCGND---GNDDAT---PB3 【4】鱼缸加热棒--继电器控制GND----GNDVCC---3.3VOUT---PB4【5】增氧泵--继电器控制GND----GNDVCC---3.3VOUT---PC11【6】水质传感器（ADC通道1）VCC--->5VGND--->GNDDAT--->PA1【7】氨气采集传感器（ADC通道4）VCC--->5VGND--->GNDDAT--->PA4【8】板载LED灯接线LED1---PA8LED2---PD2 （被串口占用）【9】板载按键接线K0---PA0 K1---PC5 K2---PA15【10】LED指示灯LED1--PA5 红色灯--表示报警异常LED2--PA6 绿色灯--表示系统正常LED3--PA7 白色灯--照明【11】环境光检测检测：BH1750数字传感器SDA-----PB5SCL-----PB6GND---GND 地VCC---VCC 电源（3.3V~5.0V）

#include "hal_uart.h"#include "stm32f0xx_usart.h"//接收串口数据的回调函数static void (*halUartOnIRQ)(unsigned char byte) = 0;static void halUartGpioInit(void);static void halUartParamInit(unsigned long baudrate);static void halUartIRQInit(void);/* * 串口通信初始化 * * @param baudrate - 串口通信波特率 */void halUartInit(unsigned long baudrate){ halUartGpioInit(); halUartParamInit(baudrate); halUartIRQInit();}/* * 注册接收串口数据的回调函数 * * @param onIRQ - 回调函数，接收到串口数据时自动调用此函数 */void halUartSetIRQCallback(void (*onIRQ)(unsigned char byte)){ halUartOnIRQ = onIRQ;}/* * 向串口发送信息 * * @param buf - 待发送的信息的存储地址 * @param len - 待发送的信息的数据长度 */void halUartWrite(const unsigned char *buf, unsigned int len){ for (unsigned int i = 0; i < len; i++) { USART_SendData(USART1, buf[i]); while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET); }}/* * 初始化串口通信相关的GPIO */void halUartGpioInit(){ //配置结构体 GPIO_InitTypeDef uart1Tx; GPIO_InitTypeDef uart1Rx; /* TX */ uart1Tx.GPIO_Pin = GPIO_Pin_9,//PA9作为TX uart1Tx.GPIO_Speed = GPIO_Speed_10MHz,//通信频率 uart1Tx.GPIO_Mode = GPIO_Mode_AF, uart1Tx.GPIO_PuPd = GPIO_PuPd_NOPULL, /* RX */ uart1Rx.GPIO_Pin = GPIO_Pin_10,//PA10作为RX uart1Rx.GPIO_Speed = GPIO_Speed_10MHz,//通信频率 uart1Rx.GPIO_Mode = GPIO_Mode_AF, uart1Rx.GPIO_PuPd = GPIO_PuPd_NOPULL, RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_1); GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_1); GPIO_Init(GPIOA, &uart1Tx); GPIO_Init(GPIOA, &uart1Rx);}/* * 初始化串口通信配置 * @param baudrate - 串口通信波特率 */void halUartParamInit(unsigned long baudrate){ USART_InitTypeDef uartConfig; uartConfig.USART_BaudRate = baudrate; uartConfig.USART_WordLength = USART_WordLength_8b; uartConfig.USART_Parity = USART_Parity_No; uartConfig.USART_StopBits = USART_StopBits_1; uartConfig.USART_HardwareFlowControl = USART_HardwareFlowControl_None; uartConfig.USART_Mode = USART_Mode_Tx | USART_Mode_Rx; RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE); USART_Init(USART1, &uartConfig); USART_Cmd(USART1, ENABLE);}/* * 初始化串口通信的中断请求 */void halUartIRQInit(){ NVIC_InitTypeDef uartNVIC; uartNVIC.NVIC_IRQChannel = USART1_IRQn; uartNVIC.NVIC_IRQChannelPriority = 0; uartNVIC.NVIC_IRQChannelCmd = ENABLE; USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); USART_ITConfig(USART1, USART_IT_TC, ENABLE); NVIC_Init(&uartNVIC);}/** 串口通信中断处理函数。当串口接收到数据时，便会自动产生中断并执行此函数*/void USART1_IRQHandler(void){unsigned char byte = 0;if (USART_Getit*tatus(USART1, USART_IT_RXNE) != RESET) { byte = USART_ReceiveData(USART1); // Auto to clear RXNE flag when read! if (halUartOnIRQ != 0) halUartOnIRQ(byte); }else USART_ClearFlag(USART1,USART_FLAG_TC);}

#include "hal_adc.h"#include "stm32f0xx_adc.h"/** ADC初始化*/void halAdcInit(){ GPIO_InitTypeDef gpioCfg; ADC_InitTypeDef adcCfg; /* PA0 */ gpioCfg.GPIO_Pin = GPIO_Pin_1; gpioCfg.GPIO_Mode = GPIO_Mode_AN; gpioCfg.GPIO_PuPd = GPIO_PuPd_NOPULL; ADC_StructInit(&adcCfg); adcCfg.ADC_Resolution = ADC_Resolution_8b; adcCfg.ADC_ContinuousConvMode = DISABLE; adcCfg.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None; adcCfg.ADC_DataAlign = ADC_DataAlign_Right; adcCfg.ADC_ScanDirection = ADC_ScanDirection_Backward; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE); RCC_ADCCLKConfig(RCC_ADCCLK_PCLK_Div4); ADC_DeInit(ADC1); GPIO_Init(GPIOA, &gpioCfg); ADC_Init(ADC1, &adcCfg); /* Convert the ADC1 Vref with 55.5 Cycles as sampling time */ ADC_ChannelConfig(ADC1, ADC_Channel_1, ADC_SampleTime_55_5Cycles); ADC_GetCalibrationFactor(ADC1); ADC_DMACmd(ADC1, ENABLE); ADC_Cmd(ADC1, ENABLE); while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADEN)); ADC_StartOfConversion(ADC1);}/* *读取ADC值 * *@return ADC值 */unsigned int halAdcRead(){ ADC_StartOfConversion(ADC1); while(ADC_GetFlagStatus(ADC1,ADC_FLAG_EOC) == RESET); return ADC_GetConversionValue(ADC1);}

#include "hal_oled12864.h"#include "font_v_8x16.h"#include "hal_lcd_spi.h"#include "hal_system.h"#include "stm32f0xx_gpio.h"typedef unsigned char uint8;typedef unsigned short uint16;static void halOLED12864Reset(void);static void halOLED12864ChipInit(void);static void halOLED12864SetPosition(uint8 page, uint8 x);static void halOLEDShowChar8x16(uint16 x, uint16 page, uint8 ch);void halOLED12864Init(void){ /* Init SPI-GPIO */ halLcdSpiInit(); /* Init Chip */ halOLED12864ChipInit(); /* Setting */ halOLED12864ClearScreen(); halOLED12864SetPosition(0,0);}void halOLED12864ClearScreen(void){ uint8 page, x; for (page = 0; page < HAL_OLED12864_PAGE; page++) { halLcdSpiTxCmd(0xb0 + page); halLcdSpiTxCmd(0x01); halLcdSpiTxCmd(0x10); for (x = 0; x < HAL_OLED12864_X; x++) halLcdSpiTxData(0); }}void halOLED12864ShowX16(uint8 line, uint8 column, const uint8 *str){ if (!str || line > 3) return; uint8 page = line * 2; // 2 page per line const uint8 *ptext = str; // text /* Show text */ while(*ptext != 0) { /* ASCII Code: 0~127 */ if((*ptext) < 128) { /* End of line */ if((column + 8) > HAL_OLED12864_X) return; /* Show 8x16 ASCII Char. */ halOLEDShowChar8x16(column, page, *ptext); column += 8; ptext++; } } /* while(*ptext != 0) */}static void halOLED12864Reset(void){#ifdef STM32F030x8 /* RST: PA12 */ GPIO_InitTypeDef lcdGPIO; lcdGPIO.GPIO_Mode = GPIO_Mode_OUT; lcdGPIO.GPIO_Speed = GPIO_Speed_2MHz; lcdGPIO.GPIO_Pin = GPIO_Pin_12; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); GPIO_Init(GPIOA, &lcdGPIO); /* Reset OLED12864 */ GPIO_ResetBits(GPIOA, GPIO_Pin_12); halSystemDelayUs(60000); GPIO_SetBits(GPIOA, GPIO_Pin_12);#else /* RST: PA3 */ GPIO_InitTypeDef lcdGPIO; lcdGPIO.GPIO_Mode = GPIO_Mode_OUT; lcdGPIO.GPIO_Speed = GPIO_Speed_2MHz; lcdGPIO.GPIO_Pin = GPIO_Pin_3; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE); GPIO_Init(GPIOA, &lcdGPIO); /* Reset OLED12864 */ GPIO_ResetBits(GPIOA, GPIO_Pin_3); halSystemDelayUs(60000); GPIO_SetBits(GPIOA, GPIO_Pin_3);#endif}static void halOLED12864ChipInit(void){ halOLED12864Reset(); halLcdSpiTxCmd(0xae); // --turn off oled panel halLcdSpiTxCmd(0x00); // ---set low column address halLcdSpiTxCmd(0x10); // ---set high column address halLcdSpiTxCmd(0x40); // --set start line address Set Mapping // RAM Display Start Line (0x00~0x3F) halLcdSpiTxCmd(0x81); // --set contrast control register halLcdSpiTxCmd(0xcf); // --Set SEG Output Current Brightness halLcdSpiTxCmd(0xa1); // --Set SEG/Column Mapping halLcdSpiTxCmd(0xc8); // --Set COM/Row Scan Direction halLcdSpiTxCmd(0xa6); // --set normal display halLcdSpiTxCmd(0xa8); // --set multiplex ratio(1 to 64) halLcdSpiTxCmd(0x3f); // --1/64 duty halLcdSpiTxCmd(0xd3); // --set display offset Shift Mapping RAM // Counter(0x00~0x3F) halLcdSpiTxCmd(0x00); // --not offset halLcdSpiTxCmd(0xd5); // --set display clock divide // ratio/oscillator oscillator frequency halLcdSpiTxCmd(0x80); // --set divide ratio, Set Clock as 100 // Frames/Sec halLcdSpiTxCmd(0xd9); // --set pre-charge period halLcdSpiTxCmd(0xf1); // --Set Pre-Charge as 15 Clocks & Discharge // as 1 Clock halLcdSpiTxCmd(0xda); // --set com pins hardware configuration halLcdSpiTxCmd(0x12); halLcdSpiTxCmd(0xdb); // --set vcomh halLcdSpiTxCmd(0x40); // --Set VCOM Deselect Level halLcdSpiTxCmd(0x20); // --Set Page Addressing Mode (0x00/0x01/0x02) halLcdSpiTxCmd(0x02); // halLcdSpiTxCmd(0x8d); // --set Charge Pump enable/disable halLcdSpiTxCmd(0x14); // --set(0x10) disable halLcdSpiTxCmd(0xa4); // --Disable Entire Display On (0xa4/0xa5) halLcdSpiTxCmd(0xa6); // --Disable Inverse Display On (0xa6/a7) halLcdSpiTxCmd(0xaf); // --turn on oled panel}static void halOLED12864SetPosition(uint8 page, uint8 x){ halLcdSpiTxCmd( 0xb0 + page ); halLcdSpiTxCmd( ((x&0xf0)>>4)|0x10 ); halLcdSpiTxCmd( (x&0x0f)|0x01 ); }static void halOLEDShowChar8x16(uint16 x, uint16 page, uint8 ch){ uint16 charIndex; /* index of font table, height: 16 */ if(ch > 32) charIndex = (ch - 32) * 16; else charIndex = 0; /* Set first page */ halOLED12864SetPosition(page, x); for (uint8 j = 0; j < 8; j++) halLcdSpiTxData( FONT_TABLE_8x16[charIndex + j] ); /* Set second page */ halOLED12864SetPosition(page + 1, x); for (uint8 j = 0; j < 8; j++) halLcdSpiTxData( FONT_TABLE_8x16[charIndex + j + 8] );}

【1】查询模块是否正常ATOK【2】获取卡号,查询卡是否插好AT+CIMI460041052911195OK【3】激活网络AT+CGATT=1OK【4】获取网络激活状态AT+CGATT?+CGATT: 1OK【5】查询网络质量AT+CSQ+CSQ: 26,0OK 【6】 检查网络状态AT+CEREG=? //+CEREG: 0,1 //找网成功OK

【1】激活GPS，要等一段时间AT+QGNSSC=1OK【2】查询激活状态，1表示成功激活AT+QGNSSC?+QGNSSC: 1OK【3】获取一次GPS定位语句AT+QGNSSRD="NMEA/RMC"+QGNSSRD: $GNRMC,120715.00,A,3150.78179,N,11711.93433,E,0.000,,310818,,,A,V*19OK