[Ultra-low power STM32U5 IoT Discovery Kit] - 0: BLE

MianQi

[Ultra-low power STM32U5 IoT Discovery Kit] - 0: BLE [Copy link]

I encountered BLE once when testing TI's "LAUNCHXL-CC1352P-4" before. At that time, I didn't think there was any difference. It was not until I answered a question from a netizen last week that I realized that for embedded engineering projects, the difference between BLE and classic Bluetooth is still obvious.

In the last example, a user's BLE could read the pressure sensor data transmitted via BLE (using dialog-semiconductor's DA14580) on Android, but it did not match on Windows 10. The query result is that Windows 7 and Windows 8 both support BLE, but Windows 10 cancels the support for BLE.

The first thing that came to mind this time was to test the BLE provided by "B-U585I-IOT02A" - STM32WB Series:

After some hardware switch operations, it was determined that it should be the device starting with 57:

However, nothing happens after pairing:

Also, sometimes it is lost:

The introduction says that the board comes with a demo, but there is no Android App, which is different from TI's board. TI's board is also "BLE + sensor", but after pairing, you can run the APP to read the sensor data.

littleshrimp

My Bluetooth has not been working properly. What switches do I need to operate on the hardware?

MianQi

littleshrimp posted on 2021-10-6 13:36 My Bluetooth has not been working well. What switches do I need to operate on the hardware?

Are you referring to the Bluetooth on the board? That doesn't require a switch, the Bluetooth on Android can detect it once it's turned on. It just won't pair.

annysky2012

Is there something wrong with the settings? Check the manual and configure it carefully

littleshrimp

MianQi posted on 2021-10-6 13:57 Are you referring to the Bluetooth on the board? That doesn't require a switch, the Bluetooth on Android can detect it once it's turned on. It just doesn't pair.

The Bluetooth on my board doesn't work. Have you flashed the program after receiving the board?

MianQi

littleshrimp posted on 2021-10-6 14:13 The Bluetooth on my board doesn't work. Have you flashed the program after receiving the board?

Not yet.