CC2340R5: UART callback implementation affecting pairing

Tool/software:

Hi,

In basic_ble OAD Peripheral project we are observing different behavior in pairing depending on the UART callback implementation.

Below are the two different implementations:

Observations:

With Implementation 1 : We are not getting passkey enter popup on remote device(mobile phone), Eventually pairing is failing every time and also we are not getting BLEAPPUTIL_PAIRING_STATE_COMPLETE event.

With Implementation 2 : Pairing is successful. 

We want to go with implementation 1 to handle UART exchange properly but failing at pairing, Kindly suggest solution.

SDK Version : simplelink_lowpower_f3_sdk_8_10_01_02 

CCS version: CCS 12.7.1

//Global variables
uint8_t uartReadBuffer[100] = {0};
uint8_t uartPacketSize = 0;



//Implemention 1:

void HandlingFunction(char *pData)
{
	uint8_t *pDataBase = NULL;
    pDataBase = pData;
    uint8_t len = *pData;
    pData++;
    UART2_write(uart, pDataBase,len+1, 0);
	UART2_read(uart, &uartReadBuffer, UART_MAX_READ_SIZE,0);
}

void UARTCallback(UART2_Handle handle, void *buffer, size_t count, void *userArg, int_fast16_t status)
{
   
	uint8_t *idx = NULL;
	uint8_t *data = BLEAppUtil_malloc(count);
	idx = data;
	*idx = count;
	idx++;
	memcpy(idx, buffer, count);
	BLEAppUtil_invokeFunction(HandlingFunction, data);
	memset(uartReadBuffer,0,sizeof(uartReadBuffer));
}

//Implemention 2:

void HandlingFunction(char *pData)
{
	UART2_write(uart, uartReadBuffer,uartPacketSize, 0);
	memset(uartReadBuffer,0,sizeof(uartReadBuffer));
	UART2_read(uart, &uartReadBuffer, UART_MAX_READ_SIZE,0);
}

void UARTCallback(UART2_Handle handle, void *buffer, size_t count, void *userArg, int_fast16_t status)
{
    uartPacketSize = count;
    BLEAppUtil_invokeFunction(HandlingFunction, NULL);
}

Thanks,

Vignesh.