BLE_ERROR after 11 BLE packets

[ericlangel]

Hello,

i have some problems with ble.updateCharacteristicValue()
After 11 packets with 18Bytes it doesn't send the 12th one.

my code in a for loop:
if(ble.updateCharacteristicValue(characteristic1.getValueAttribute().getHandle(), (uint8_t *)&Work_Buffer[0], 12)== BLE_ERROR_NONE){
Serial.println("OK");
}
else{
Serial.println("BLE Error");
}

i got 11 OK's and after that many BLE Error's
The Error is Value 5 ->BLE_STACK_BUSY

i tried to add a Delay between the packets, but it doesn't helped.

Where is the Problem? can i flush or clear the BLE Buffer?

[ericlangel]

i get it working, but i don't know why its working?

i added a ble.waitForEvent() after ble.updateCharacteristicValue()

ble.updateCharacteristicValue(characteristic1.getValueAttribute().getHandle(), (uint8_t *)&Work_Buffer[0], 12);
ble.waitForEvent();