Problem with Wi-Fi communication and BLE communication?

RE: Problem with Wi-Fi communication and BLE communication?

Liverpool007 — Fri, 23 Feb 2018 10:05:03 GMT

vishal can u please upload the code which you used to uplade data to the server using At commands

RE: Problem with Wi-Fi communication and BLE communication?

vishal — Tue, 23 Jan 2018 05:40:46 GMT

Hi..!! Now i am able to read response of ESP8266 and also sent my data to server. Thanks for your help, now i want configure WiFi credentials using android apps for that having only one UART with nRF52832 how i can ON BLE and after done configuration OFF BLE and ON wifi to continue sending data to server. Which API i need to call for handing BLE ON and OFF. Thanks.....

RE: Problem with Wi-Fi communication and BLE communication?

vishal — Tue, 19 Dec 2017 13:35:59 GMT

I am little confuse when i need to set index 0 or other also, but i am still showing continuously ERROR or some tine busy.. , OK this message showing and i am not able to stop. I want to when i send AT it will show OK and then after that stop. can you please show me simple function for the same. or give me example. Thanks for your reply....

RE: Problem with Wi-Fi communication and BLE communication?

Matt — Tue, 19 Dec 2017 12:13:52 GMT

You start to accumulate the uart response when you get the first 0x0D, but when do you stop? i.e. when do you set startreadwifiUART back to 0? The same with index in the case APP_UART_TX_EMPTY: when do you set index back to 0?

RE: Problem with Wi-Fi communication and BLE communication?

vishal — Mon, 18 Dec 2017 15:37:52 GMT

Hi Matt, Now i am able to connect ESP8266 with my router, but still i have facing problem for reading ESP8266 response in uart handle code. I have refere this functionuart_event_handle Can you please help me how i can read response in my terminal. Here is my function:

void uart_event_handle(app_uart_evt_t * p_event)
{
    static uint8_t data_wifi_array;
    static uint8_t index = 0;
    static uint8_t startreadwifiUART = 0;
    static uint8_t ind_datawifi_uart = 0;
    static uint8_t stringwifi[100];
    uint32_t   err_code;
    switch (p_event->evt_type)
    {
          case APP_UART_DATA_READY:
        	  UNUSED_VARIABLE(app_uart_get(&data_wifi_array));
        	  	  if(ind_datawifi_uart == 0)
        	  	    {
                    if(data_wifi_array == 0x0D)
                        {
                        startreadwifiUART=true;
                        memset(cmd_wifi_buff,0,UART_TX_BUF_SIZE);
                        }
                }

                if (startreadwifiUART)
                    {
                        cmd_wifi_buff[ind_datawifi_uart]=data_wifi_array;
                        ind_datawifi_uart++;
                     }
        break;

                case APP_UART_TX_EMPTY:
                    if(index > 0)
                    {
                        err_code = app_uart_put(stringwifi[index]);
                        APP_ERROR_CHECK(err_code);
                        index++;
                    }
                break;

        default:
            break;
                }
        }

RE: Problem with Wi-Fi communication and BLE communication?

MartinBL — Mon, 18 Dec 2017 10:19:45 GMT

Unfortunately I don't have an esp8266, nor do I have the time to make examples for you as the holiday season is coming up. I suggest that you take small steps and start with the simplest AT commands the esp8266 provides. Make sure that you are able successfully send the commands back and read response messages from the esp8266. I suppose there should be lots of people using the esp8266 and you will probably have better luck searching online for examples and libraries.

RE: Problem with Wi-Fi communication and BLE communication?

vishal — Fri, 15 Dec 2017 14:10:45 GMT

I changes but still same problem can you give me example function and other function for ESP8266 response print on serial terminal. Thanks for your reply.....

RE: Problem with Wi-Fi communication and BLE communication?

MartinBL — Fri, 15 Dec 2017 13:21:21 GMT

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.
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".
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.

RE: Problem with Wi-Fi communication and BLE communication?

vishal — Fri, 15 Dec 2017 10:56:20 GMT

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

RE: Problem with Wi-Fi communication and BLE communication?

Matt — Mon, 11 Dec 2017 12:16:36 GMT

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

RE: Problem with Wi-Fi communication and BLE communication?

vishal — Mon, 11 Dec 2017 04:30:56 GMT

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.

RE: Problem with Wi-Fi communication and BLE communication?

Matt — Sat, 09 Dec 2017 14:08:34 GMT

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