STM32驱动BC26连接新版oneNET云平台

STM32驱动BC26连接新版oneNET云平台

本次实验用到墨子号（移远）BC26连接OneNET云平台进行数据上传，在之前的文章已经介绍过了通过串口调试助手来实现BC26连接新版OneNET云平台，道理差不多，利用STM32驱动BC26连接云平台只不过是需要自己调用一些串口通信函数而已，网上资源丰富，当然也可以自己写。

一、硬件连接

SMT32F103VET6	BC26
5V	VIN
GND	GND
TX	RXD
RX	TXD

二、代码及介绍

1. 串口初始化：程序中使用到串口1来打印出BC26模块返回的响应消息，串口2用来向BC26模块发送AT指令

usart.c

#include "usart.h"
#include "delay.h"

//C库
#include <stdarg.h>
#include <string.h>
#include <stdio.h>


char RxCounter,RxBuffer[100];     //接收缓冲,最大USART_REC_LEN个字节.

//串口1初始化
void Usart1_Init(unsigned int baud)
{
   
   

	GPIO_InitTypeDef gpio_initstruct;
	USART_InitTypeDef usart_initstruct;
	NVIC_InitTypeDef nvic_initstruct;
	
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
	
	//PA9	TXD
	gpio_initstruct.GPIO_Mode = GPIO_Mode_AF_PP;
	gpio_initstruct.GPIO_Pin = GPIO_Pin_9;
	gpio_initstruct.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &gpio_initstruct);
	
	//PA10	RXD
	gpio_initstruct.GPIO_Mode = GPIO_Mode_IN_FLOATING;
	gpio_initstruct.GPIO_Pin = GPIO_Pin_10;
	gpio_initstruct.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &gpio_initstruct);
	
	usart_initstruct.USART_BaudRate = baud;
	usart_initstruct.USART_HardwareFlowControl = USART_HardwareFlowControl_None;		//无硬件流控
	usart_initstruct.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;						//接收和发送
	usart_initstruct.USART_Parity = USART_Parity_No;									//无校验
	usart_initstruct.USART_StopBits = USART_StopBits_1;								//1位停止位
	usart_initstruct.USART_WordLength = USART_WordLength_8b;							//8位数据位
	USART_Init(USART1, &usart_initstruct);
	
	USART_Cmd(USART1, ENABLE);														//使能串口
	
	USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);									//使能接收中断
	
	nvic_initstruct.NVIC_IRQChannel = USART1_IRQn;
	nvic_initstruct.NVIC_IRQChannelCmd = ENABLE;
	nvic_initstruct.NVIC_IRQChannelPreemptionPriority = 0;
	nvic_initstruct.NVIC_IRQChannelSubPriority = 2;
	NVIC_Init(&nvic_initstruct);

}

//串口2初始化
void Usart2_Init(unsigned int baud)
{
   
   

	GPIO_InitTypeDef gpio_initstruct;
	USART_InitTypeDef usart_initstruct;
	NVIC_InitTypeDef nvic_initstruct;
	
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
	
	//PA2	TXD
	gpio_initstruct.GPIO_Mode = GPIO_Mode_AF_PP;
	gpio_initstruct.GPIO_Pin = GPIO_Pin_2;
	gpio_initstruct.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &gpio_initstruct);
	
	//PA3	RXD
	gpio_initstruct.GPIO_Mode = GPIO_Mode_IN_FLOATING;
	gpio_initstruct.GPIO_Pin = GPIO_Pin_3;
	gpio_initstruct.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &gpio_initstruct);
	
	usart_initstruct.USART_BaudRate = baud;
	usart_initstruct.USART_HardwareFlowContr