Increase max packets

[Alaa]

Hi,

I'm using BLE on nrf52832 and softdevice s132. It seems that when I send too many packets (around 45), the ble crashes. Is there a way to increase that number or at least make it not crash?

Thanks

[Alaa]

Can you tell me what parameters to adjust?

I just tried adding a 500 ms delay after roughly 40 packets, and I'm not getting the error anymore.

[awneil]

Connection interval

MTU size

Use the 2Mbps PHY (BLE 5 High troughput mode)


https://www.nordicsemi.com/Products/Low-power-short-range-wireless/Bluetooth-5

But remember that your Central (especially if it's a phone or tablet) may impose limits ...

[Alaa]

Since I'm using another microcontroller (STM32) that communicates with the Nordic MCU, I eventually solved this by disabling the while loop of send-retry in nordic, and moving the retry process to the STM MCU.

So I disabled the following loop condition:

while (err_code == NRF_ERROR_RESOURCES);

that tries to resend a failed message.

Turns out when the error code is Not Enough Resources (19), the UART is busy, and so I get a HAL_BUSY from HAL_UART_Transmit_IT(). And then I just retry sending the message until it succeeds.