nRF52832 Cannot send many packets used the blinky button event

[libailiang]

Hi

I used nRF5_SDK_14.2.0 to develop nRF52832. Now I have a problem. I used the demo of ble_app_blinky in the ble_peripheral files. I want to send the 2552 bytes by ble_lbs_on_button_change event. I have changed the data fifo to 20bytes.

...............

len = 20;

params.p_data = buff_send;

params.p_len  = &len;

sd_ble_gatts_hvx(conn_handle, &params);

.................

In the "static void button_event_handler(uint8_t pin_no, uint8_t button_action)", I send the first packet., and then wait for BLE_GATTS_EVT_HVN_TX_COMPLETE int the function ble_evt_handler. Open the Adroid phone, link to the device. When I press button 1, nRF52832 begin to sent data by sd_ble_gatts_hvx. When the BLE_GATTS_EVT_HVN_TX_COMPLETE event happened, the next packet would be sent. But unfortunately, after sent 23 packets, the error was produced. 

__WEAK void app_error_fault_handler(uint32_t id, uint32_t pc, uint32_t info)

I watched the error, the values are as following:

id = 0x00004001
 pc = 0x00000000
 info = 0x200049d0

So , could give me some advice about the error. Thanks.

[Kenneth]

If you define DEBUG then you can in app_error_fault_handler() get the exact file name, file number and error code where the application is asserting.

Best regards,
Kenneth

[libailiang]

Hi Kenneth

I solved this problem. But another question is that when I wait for the BLE_GATTS_EVT_HVN_TX_COMPLETE, the 2552 bytes are sent for a long time about 20 seconds. I think here is maybe another problem. Could you give me some advice? Thanks.

[Kenneth]

Hello, I think you have already an on-going case here: 

https://devzone.nordicsemi.com/f/nordic-q-a/40425/sd_ble_gatts_hvx-cannot-sent-many-packets-in-the-loop