（2）STM32+ESP8266+手机网络助手实现AP模式通讯 - ToB企服应用市场:ToB评测及商务社交产业平台

AT

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AT
+CWMODE=2

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AT
+RST

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AT
+CWSAP="ESP8266","123456",11,3

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AT
+CIPMUX=1

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AT
+CIPSERVER=1,a (为端标语，默认333，最好不加，我改别的报错，不知道为啥)

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AT
+CIFSR

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AT
+CIPSEND=0,6//0为id号，6为要发送的数据长度

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#include "timer5.h"
extern u8 start3;//串口中断接收完成标志
//定时器5中断服务程序
void TIM5_IRQHandler(void)
{
if (TIM_GetITStatus(TIM5, TIM_IT_Update) != RESET)//是更新中断
{
start3=1; //标记串口数据接收完成
TIM_ClearITPendingBit(TIM5, TIM_IT_Update ); //清除TIM5更新中断标志
TIM_Cmd(TIM5, DISABLE); //关闭TIM5
}
}
//通用定时器中断初始化
//这里始终选择为APB1的2倍，而APB1为36M
//arr：自动重装值。
//psc：时钟预分频数
void TIM5_Int_Init(u16 arr,u16 psc)
{
NVIC_InitTypeDef NVIC_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);//TIM7时钟使能
//定时器TIM7初始化
TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值
TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //设置时钟分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上计数模式
TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure); //根据指定的参数初始化TIMx的时间基数单位
TIM_ITConfig(TIM5,TIM_IT_Update,ENABLE ); //使能指定的TIM5中断,允许更新中断
NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//抢占优先级0
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //子优先级1
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能
NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器
}

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//初始化IO 串口3//bound:波特率 void usart3_init(u32 bound){ USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; //声明一个结构体变量，用来初始化GPIO //使能串口的RCC时钟 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB , ENABLE); //使能UART3地点GPIOB的时钟 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); //串口使用的GPIO口配置 // Configure USART3 Tx (PB.10) as alternate function push-pull GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOB, &GPIO_InitStructure); // Configure USART3 Rx (PB.11) as input floating GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOAT
ING; GPIO_Init(GPIOB, &GPIO_InitStructure); //串口停止配置 //Configure the NVIC Preemption Priority Bits // NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); // Enable the USART3 Interrupt NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1 ;//抢占优先级3 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; //子优先级3 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); //配置串口 USART_InitStructure.USART_BaudRate = bound; USART_InitStructure.USART_WordLength = USART_WordLength_8b; USART_InitStructure.USART_StopBits = USART_StopBits_1; USART_InitStructure.USART_Parity = USART_Parity_No; USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None; USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; // Configure USART3 USART_Init(USART3, &USART_InitStructure);//配置串口3 // Enable USART3 Receive interrupts 使能串口吸收停止 USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); // Enable the USART3 USART_Cmd(USART3, ENABLE);//使能串口3 USART_ClearFlag(USART3, USART_FLAG_TC); TIM5_Int_Init(1000-1,8400-1); //100ms停止 TIM_Cmd(TIM5, DISABLE); //关闭定时器7}

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//定义接收数组，接收缓冲,最大USART3_MAX_RECV_LEN个字节，宏定义为400
unsigned char USART3_RX_BUF[USART3_MAX_RECV_LEN];
u16 USART3_RX_STA=0; //数组标志位
u8 start3=0; //接收状态标志位
void USART3_IRQHandler(void)
{
u8 res;
if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET)//接收到数据
{
res =USART_ReceiveData(USART3);
TIM_SetCounter(TIM5,0);//计数器清空
TIM_Cmd(TIM5, ENABLE); //使能定时器5
USART3_RX_BUF[USART3_RX_STA]=res; //记录接收到的值
USART3_RX_STA++;
}
}

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//串口3,printf 函数
//确保一次发送数据不超过USART3_MAX_SEND_LEN字节
void u3_printf(char* fmt,...)
{
u16 i,j;
va_list ap;
va_start(ap,fmt);
vsprintf((char*)USART3_TX_BUF,fmt,ap);
va_end(ap);
i=strlen((const char*)USART3_TX_BUF);//此次发送数据的长度
for(j=0;j<i;j++)//循环发送数据
{
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)==RESET); //等待上次传输完成
USART_SendData(USART3,(uint8_t)USART3_TX_BUF[j]); //发送数据到串口3
}
}

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//清空每次停止吸收完成后的数组void Clear_Buffer(void)//清空缓存{ u8 i; for(i=0;i<=USART3_RX_STA;i++) USART3_RX_BUF[i]=0;//缓存 USART3_RX_STA=0; Delay_ms(100);}//模块初始化void esp8266_start_trans(void){ esp8266_send_cmd("AT
+CWMODE=2","OK",50); Clear_Buffer(); //Wifi模块重启 esp8266_send_cmd("AT
+RST","OK",20); Delay_ms(1000); //延时3S等待重启成功 Delay_ms(1000); Delay_ms(1000); //AP模式 esp8266_send_cmd("AT
+CWSAP="想学ESP8266吗","12345678",11,3","OK",200); Clear_Buffer(); esp8266_send_cmd("AT
+CIPMUX=1","OK",20); Clear_Buffer(); esp8266_send_cmd("AT
+CIPSERVER=1","OK",200); Clear_Buffer();} u8 esp8266_send_cmd(u8 *cmd,u8 *ack,u16 waittime){ u8 res=0; USART3_RX_STA=0; u3_printf("%s\r\n",cmd); //发送下令 printf("%s\r\n",cmd); Delay_ms(waittime); if(strstr((const char*)USART3_RX_BUF,"OK")) { Uart1_SendStr((char*)USART3_RX_BUF); } return res;}

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extern u8 start3;
extern unsigned char USART3_RX_BUF[USART3_MAX_RECV_LEN];
int main ( void )
{
/* 初始化 */
USART1_Config ();
usart3_init(115200);
CPU_TS_TmrInit();
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_3);
esp8266_start_trans();
while ( 1 )
{
if(start3==1)//接收中断完成标志位
{
//判断接收的数据是否为密码数据，自己设置就行
if(strstr((const char*)USART3_RX_BUF,"12345678"))
{
printf("开门成功\r\n");
}
if(!strstr((const char*)USART3_RX_BUF,"12345678"))
{
printf("密码错误\r\n");
}
Clear_Buffer();
start3=0;
}
}
}

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