Hi,
I have 2 XIAO nRF52840 Sense in my hands. They both work fine with the Blink example described in the “Getting Started document” ( wiki. seeedstudio. com/XIAO_BLE/ ).
However, they don’t work for the example mentioned in “Control built-in LED using a smartphone” in the “Bluetooth Usage document” ( For Seeed nRF52 mbed-enabled Boards Boards - Seeed Wiki ). There is no LED BLE peripheral on the phone’s APP peripheral list.
I modified the code as follows. It should blink a LED in the infinite loop in the beginning, but it didn’t. So I guess the image uploading didn’t make success, although there was no error message while uploading.
//......
void setup() {
Serial.begin(9600);
while (!Serial);
// set LED pin to output mode
pinMode(ledPin, OUTPUT);
while(1) {
digitalWrite(ledPin, HIGH);
delay(1000);
digitalWrite(ledPin, LOW);
delay(1000);
}
// begin initialization
if (!BLE.begin()) {
Serial.println("starting Bluetooth® Low Energy module failed!");
while (1);
}
//......
Then I tried the Blink example again, and it still works. So I wonder if it might only happen when it’s involved with the BLE example.
The following is my development environment.
- arduino-ide_2.0.2_Windows_64bit
- Seeed nRF52 mbed-enabled Boards 2.7.2
- ArduinoBLE 1.3.2
- Board: Seeed XIAO BLE Sense - nRF52840
I also fixed the uploading bug according to this doc.
I didn’t find a related discussion about this issue. So It may work in a specific environment. It would also help if someone could share a work environment with me. Thanks.