Can't get local IP address / problems with init sequence
Posted: Thu Mar 01, 2018 4:29 pmI'm using an AVR MCU to communicate with an ESP8266 module over UART.
At this point I'm sending the following commands to the module:
The UART send function also sends the data to an LCD that is attached to the board. The UART receive function also does the same, it's shown here:
And here are the responses I get from the ESP8266:
I have tried changing the delay time between commands, does not seem to change anything for the better. Advice would be appreciated.
In addition - can this be an electrical issue? Perhaps I need to add a large cap near the module? Perhaps I need to wait a short time after powering up the board & before starting the sequence on the module?
At this point I'm sending the following commands to the module:
Code: Select all
void ESPInit(void)
{
UARTSendString_P(PSTR("ATE0\r\n")); // Turn off echo
_delay_ms(100);
UARTSendString_P(PSTR("AT+CWMODE=2\r\n")); // AP on-line
_delay_ms(100);
UARTSendString_P(PSTR("AT+CWSAP=\"HotSpot\",\"12345\",5,0\r\n")); // Set SSID + pass
_delay_ms(100);
UARTSendString_P(PSTR("AT+CIPMUX=1\r\n")); // Enable multiple connections
_delay_ms(100);
UARTSendString_P(PSTR("AT+CIPSERVER=1,80\r\n")); // Create server, port 80
_delay_ms(100);
UARTSendString_P(PSTR("AT+CIFSR\r\n")); // Get local IP address
_delay_ms(100);
}The UART send function also sends the data to an LCD that is attached to the board. The UART receive function also does the same, it's shown here:
Code: Select all
ISR(USART0_RXC_vect)
{
static uint8_t UARTRXBufferIndex = 0;
UARTRXBuffer[UARTRXBufferIndex] = USART0.RXDATAL;
#ifdef DEBUG
LCDSetTextColor(BLUE, BLACK);
LCDGWriteChar(UARTRXBuffer[UARTRXBufferIndex]);
#endif
if (UARTRXBuffer[UARTRXBufferIndex] == '\n')
{
UARTRXBufferIndex = 0;
//UARTRXFlag = true;
}
else if (UARTRXBufferIndex < UART_RX_BUFFER_SIZE)
UARTRXBufferIndex++;
else
UARTRXBufferIndex = 0;
}And here are the responses I get from the ESP8266:
I have tried changing the delay time between commands, does not seem to change anything for the better. Advice would be appreciated.
In addition - can this be an electrical issue? Perhaps I need to add a large cap near the module? Perhaps I need to wait a short time after powering up the board & before starting the sequence on the module?