Uart received data error

[pak]

Dear Nordic

I am doing a project that has a multilink one central and ten peripherals.

So I started with ble multilink multi role in here. I added ble_nus_c and uart to ble_aggregator and ble_nus to ble_app_blinky.

I deleted all services ble_agg_config_service.c, ble_lbs.c and ble_thingy_uis_c.c from the code only ble_nus_c is running.

My project uses a pc to send commands to uart central and pass to peripherals.

Programs  are working fine both sides, I can send string command from pc to peripherals.

Problem is uart rx data[data_array] is good when there are only two peripherals connected.

I send simple string "sca" form Termite.

When there are three peripherals data_array looks like this

My aggregator is nRF52840DK and peripherals have both nRF52840DKs and nRF52832DKs SDK14.2.

What I have to do to fix the problem?

pls help.

Best regards

Pakorn

[Håkon Alseth]

Hi,

 

I see one potential issue which can cause the issue that you're seeing, where 2 works and 3 does not.

This 2D array is hard-coded to store 2 BTLE addresses, and will cause a buffer overflow when a third one is connected:

https://github.com/NordicPlayground/nrf52-ble-multi-link-multi-role/blob/master/ble_aggregator/main.c#L520

Could you expanding the buffer to see if this helps?

static uint8_t peer_addr_LR[NRF_SDH_BLE_CENTRAL_LINK_COUNT][6];

If it does not help, could you post the functions you've added in main?

Kind regards,

Håkon

[pak]

Hi Haํkon

That is great. It works now.

Thank you so much.

will be more project with nRF.

Best regards,

Pakorn

[Håkon Alseth]

Hi Pakorn,

 

I am glad to hear that it is now working as it should. I'll let my colleague know about this issue so that he can fix it in the repository.

Kind regards,

Håkon