MicroPython Forum

In _IRQ_SCAN_RESULT I can get adv_data ,but decode_services(adv_data)=[],it return null. _IRQ_SCAN_RESULT is a callback used for gap_scan(), in this callback you will got addr_type and addr, use gap_connect() with these params to start connect the scanned device, _IRQ_PERIPHERAL_CONNECT will trigge...

Roberthh wrote: ↑

Thu Mar 19, 2020 7:26 pm

The reason: variable assignment does not happen at compile time. It happens when the code is executed.

Note: You do not have to import const.

Thanks Robert, this is helpful for me, thanks again

test = const(0x1) # from now on test is a shortcut for 0x1 Thanks fstengel, that's uh.....amazing And then I have second question from micropython import const ONE = 1 TWO = 2 COMPILED = const(ONE | TWO) In this way, it's still got exception, according to you link The argument to const() may be any...

Here's the sample code: from micropython import const class a(object): test = const(0x1) class b(object): test = 0 And here is the result: Traceback (most recent call last): File "<stdin>", line 4, in b SyntaxError: can't assign to expression According to the documents about micropython.const Consta...

I actually have a working HID demo, have been plannign to turn it into another example in examples/bluetooth. I will try and get this done later this week. Hello jimmo, is there any news could be shared to us? Now I still have a problem not solved, the device will be stuck when it reconnect to cent...

fstengel wrote: ↑

Sun Mar 01, 2020 9:21 am

[*] Using a USB port capable of reliably providing more than 500mA at 5V. Using a powered hub helped a lot.[/list]

As you said....I try to unplug the cable from a usb hub and replug to notebook usb port, and then problem solved, that's sooooo funny~

Thanks a lot, fstengel

Update exception information... >>> import ubluetooth as bt >>> ble=bt.BLE() >>> ble.active(True) I (24440) BTDM_INIT: BT controller compile version [5aed448] I (49208) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE W (49218) phy_init: failed to load RF cal...

I have been reinstalled Windows 10 (build 1909), and installed the lastest version of VS Code with RT-Thread plugin, I'm facing a new issue, when I paste the code to repl it will cause exception paste mode; Ctrl-C to cancel, Ctrl-D to finish === import ubluetooth as bt === ble=bt.BLE() === ble.activ...

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At present, it is possible to bond and connect on the mobile, and use the BOOT button on the board to randomly input English letters. However, a "Driver Error" message appears on the Windows 10 and the board cannot be bonded. Another problem is that when the board is reconnected, although _IRQ_CENTR...