Problem with Wi-Fi communication and BLE communication?

[vishal]

Hi,

I am trying to send data to server using ESP8266 WiFi module interface with nRF52832 DK board via UART interface. My problem is when i sent AT command to ESP8266 it get respond but i want to set SSID name and Password of WiFi using android APP. So sir is it possible to communicate BLE as well as wifi using UART in nRF52832. Can you provide me some useful link or reference sample example tutorial for communicating wifi with nordic. I know this Link tutorial but this is not for ESP8266. Can i use other vendor library with nordic SDK for nRF52832.

[Matt]

A very makeshift solution will be Android app <---- NUS ----> nRF52 < --- your own uart handling code --- > ESP8266

[vishal]

Thanks for your reply, Can you provide me reference example for uart handling code means i can use one UART for BLE as well as WiFi ESP8266 is it right.

[Matt]

There is only 1 UART in nRF52. The Android app to nRF52 connection is BLE, and the nRF52 to ESP8266 is through the UART.

infocenter.nordicsemi.com/index.jsp Software Development Kit > nRF5 SDK > nRF5 SDK v12.2.0 > Examples > Bluetooth low energy examples > BLE Peripheral > UART/Serial Port Emulation over BLE

Software Development Kit > nRF5 SDK > nRF5 SDK v12.2.0 > Examples > Hardware peripheral examples > UART Example

[vishal]

Hi Matt, I have write code for sending AT command to ESP8266 it get response but unable to stop continuously ERROR message showing. Here is my Code:

void ESP_Config()
{
	char stringwifi[] = "AT\r\n";
	for (uint16_t i = 0; i < strlen(stringwifi); i++)
	{
		while(app_uart_put(stringwifi[i]) != NRF_SUCCESS);
	}
	while (1)
	for (uint16_t i = 0; i < 30; i++)
	{
		uint8_t cr;
		while (app_uart_get(&cr) != NRF_SUCCESS);
		while (app_uart_put(cr) != NRF_SUCCESS);
	}
	nrf_delay_ms(1000);
}

I call ESP_COnfig() in main

Please help me where i need to change in my code. I want to sens one by one AT command series for configuration ESP8266 please help me it highly appreciate for me. Thanks

[MartinBL]

1. When you initiate stringwifi like that the array will actually end up being 5 bytes long, because a \0 terminator will be added at the end: www.tutorialspoint.com/.../c_strings.htm. I suppose this might mess with your command.
2. After a quick look in this pdf it seems to me that the new line (\r\n aka CR LF) should be added after the complete command. Not right after "AT".
3. Remember that string values need to be included in double quotation marks. I guess you should add this to your SSID and password. Refer to page 6 in the pdf linked to above.