esp8266 with avr

[Areeha Durrani]

hello! I want to work on esp8266 on avr studio but i dont know what to start with! I wrote a code on avr studio for esp8266 but it gives errors.As far as my study says there is some USART initialization etc stuff required.need help..from where to start and what to do!!My code goes like;

* //GccApplication11.c
*
* //Created: 2/16/2016 4:16:02 PM
* //Author : areeha

#include <avr/io.h>
#include <util/delay.h>
#include <esp8266.h>

// define some macros
#define BAUD 9600 // define baud
#define BAUDRATE ((F_CPU)/(BAUD*16UL)-1) // set baud rate value for UBRR

// function to initialize UART
void uart_init (void)
{
UBRRH = (BAUDRATE>>8); // shift the register right by 8 bits
UBRRL = BAUDRATE; // set baud rate
UCSRB|= (1<<TXEN)|(1<<RXEN); // enable receiver and transmitter
UCSRC|= (1<<URSEL)|(1<<UCSZ0)|(1<<UCSZ1); // 8bit data format
}

void io_init(void)
{
DDRB |= (1 << DDB0); // LED output
}

int main(void)
{
io_init();
_delay_ms(2000); // wait a bit for esp8266 to initialize
esp8266_init();
_delay_ms(5000);
esp8266_write_str("ATE0\r\n"); // turn off echo
_delay_ms(500);
esp8266_write_str("AT+CIPMUX=1\r\n"); // accept multiple connections
_delay_ms(500);
esp8266_write_str("AT+CIPSERVER=1,8000\r\n"); // create server on port 8000

uint8_t i = 0;

_delay_ms(1000);

while(1) {
esp8266_process(); // call this to parse uart esp8266 data from uart

/* check parse status */
switch (esp8266_status()) {
case CLIENT_CONNECTED:
PORTB |= (1 << PB0);
break;

case CLIENT_DISCONNECTED:
PORTB &= ~(1 << PB0);
break;

case CLIENT_DATA_READY: {
/* case statement brackets are required to declare new variable
inside of a case statement (initialization will not be
skipped) */
char *msg = esp8266_read_msg();

for (i = 0; i < msg[0] - '0'; i++) {
PORTB |= (1 << PB0);
_delay_ms(250);
PORTB &= ~(1 << PB0);
_delay_ms(250);
}

esp8266_write_str("AT+CIPSEND=0,9\r\n");
_delay_ms(50);
esp8266_write_str("Hello ");
esp8266_write_char(msg[0]);
esp8266_write_str("\r\n");

break;
}

default:
break;
}

_delay_ms(100);
}

esp8266_write_str("AT+CIPCLOSE=0\r\n");
esp8266_write_str("AT+CIPSERVER=0\r\n");

return 0;
}

 

[Amar Dhore]

First step should be:Try to make your serial interface work.
could you format your code properly so it is easy to understand!

Below link I though was useful.
http://fab.cba.mit.edu/classes/863.14/tutorials/Programming/serialwifi.html