ESP8266 microcontroller 51 connected to the local server assembler
at89c2051 microcontroller, crystal 11.096MHZ, communication speed 9600, TCP multi-way connection, local connection address 192.168.1.107, send and receive data successfully
Assembler as follows:
This is main.c
#include
#include
#include "usart.h"
#include "wifi.h"
char Recive_table [20] = ""; // receive buffer, a maximum of 20 bytes
char Recive_state = 0; // receive completion flag
int main (void)
{
/ ******************** initialization function ********************************************************** /
Uart_Init (); // initialize the serial port, 9600
ms_delay (1000);
WIFI_Init (); // wifi initialization
/ ************************************************* *** /
/ ********************************************************** main loop ********************************************************* /
for (;;)
{
ms_delay (10);
if (Recive_state == 1)
{
ES = 0; // clear the receive flag
if ((Recive_table [0] == '+') && (Recive_table [1] == 'I') && (Recive_table [2] == 'P')) // string is received + IPD, x, x: y
{
if ((Recive_table [3] == 'D') && (Recive_table [6] == ','))
{
if (Recive_table [9] == '0')
P1 = 0;
if (Recive_table [9] == '1')
P1 = 0xff;
}
}
memset (Recive_table, '\ 0', 20);
Recive_state = 0;
ES = 1; // Open the receive flag
}
}
/ ************************************************* *** /
}
/ ************************************************* *****************
Function: void Uart_Interrupt () interrupt 4
Function: the serial port interrupt handler to save the received character Recive_table [] array
Parameters: None
Return Value: None
************************************************** ***************** /
void Uart_Interrupt () interrupt 4
{
static char i = 0; // because it is a receiving one, so use static
if (RI == 1)
{
ES = 0;
RI = 0;
Recive_table [i] = SBUF;
i ++;
if ((Recive_table [i-1] == '\ n'))
{
Recive_table [i] = '\ 0';
i = 0;
Recive_state = 1;
}
ES = 1;
}
Else
TI = 0;
}
This is usart.c
#include "usart.h"
/ ************************************************* *****************
Function: void Uart_Init (void)
Function: serial port initialization, 9600 (this will not, Internet Baidu)
Parameters: None
Return Value: None
************************************************** ***************** /
void Uart_Init (void)
{
TMOD = 0x20;
TH1 = 0xfD;
TL1 = 0xfD;
TR1 = 1;
REN = 1;
SM0 = 0;
SM1 = 1;
EA = 1;
ES = 1;
}
This is wifi.c
#include
#include "wifi.h"
/ ************************************************* *****************
Letter number: void ms_delay (int t)
Function: millisecond delay
Parameters: None
Return Value: None
************************************************** ***************** /
void ms_delay (int t)
{
int i, j;
for (i = t; i>0; i--)
for (j = 110; j>0; j--);
}
/ ************************************************* *****************
Letter number: void LED (void)
After sending a command function for display: Function
Parameters: None
Return Value: None
************************************************** ***************** /
void LED (void)
{
P1 = 0;
ms_delay (100);
P1 = 0xff;
ms_delay (100);
}
/ ************************************************* *****************
Letter number: void WIFI_Init (void)
Function: wifi initialize (name: esp8266; password: 1234567890)
Parameters: None
Return Value: None
************************************************** ***************** /
void WIFI_Init (void)
{
ES = 0;
TI = 1;
printf ( "AT + RST \ r \ n");
LED();
ms_delay (1000);
printf ( "AT + CWMODE 3 \ r \ n =");
LED();
ms_delay (1000);
printf ( "AT + CIPMUX = 1 \ r \ n");
LED();
ms_delay (1000);
printf ( "AT + CIPSERVER 1,8080 \ r \ n =");
LED();
ms_delay (1000);
while (TI!);
TI = 0;
ES = 1;
}
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