How to change baudrate of BLE central device?

[Mani]

Hi,

I am using two devices in which one is running with ble_app_uart code which is ble_peripheral device and another is running with ble_app_uart_c code which is central device.  Peripheral device can be configured to the different baud rates through the commands, but there is a disconnection issue while each device is running with different baud rate. So need to configure the baud rate of central device.

How it can be done?

[Susheel Nuguru]

Are you not able to debug to find out the disconnect reason? 

The two devices on each end can have their own baudrate for the UART communciation, Probably there is an APP assert when are you trying to change the baud rate. Some code snippets of how you are doing that would help to have more insights into your problem

[Mani]

I am not doing anything on Central device, but on peripheral device I will be sending commands from mobile phone to change the baud rate.The command is ab below

static void nus_data_handler(ble_nus_t * p_nus, uint8_t * p_data, uint16_t length)
{
    
    char data[10];
	  uint32_t i;
	
    for (i = 0; i < length; i++)
    {
        while(app_uart_put(p_data[i]) != NRF_SUCCESS);
			  data[i]=p_data[i];
    }
    while(app_uart_put('\n') != NRF_SUCCESS);
		// Added- For changing the baud rate dynamically
		if(strstr(data,"BAUD9600")!=NULL)
		{
			app_uart_close();
			baud_rate= UART_BAUDRATE_BAUDRATE_Baud9600;
			uart_init();
		}
		if(strstr(data,"BAUD57600")!=NULL)
		{
			app_uart_close();
			baud_rate= UART_BAUDRATE_BAUDRATE_Baud57600;
			uart_init();
		}
}

Same as this I wanted to do it in central device. Is there any possibility?

[Susheel Nuguru]

sorry for late response, uart_init could fail, check if it has failed due to some reason. Please do not ignore the return value of the functions.