MicroPython Forum

Look there: http://docs.micropython.org/en/latest/reference/speed_python.html#the-const-declaration As far as I can tell, when you write foo=const(42) then foo is not a variable but behaves as if, as compile time, it is replaced by 42 . So your code would be seen as: from micropython import const cl...

This could almost become part of a FAQ. There are quite a few questions in the forum on the same issue (amonst them one of mine )

Diclaimer: I'm not an uasyncio specialist. However, a couple of things look weird in your code. You want to use the singleton BLE object, you do not need to wait for it: it does already exist. So no need for await in the line initializing ble . This is why your coro does not work: you try to wait fo...

As far as I can tell, the exception is not thrown by MicroPython, but by the part that is used by VS and its plugin to communicate with your ESP32. One possible reason for your issue is your chip resetting because of a brownout due to the RF part of the chip being activated. I had that problem with ...

I just tried using the viper emitter on my ESP32. It seems that range(240) is strongly optimized. The following three functions @micropython.viper def merge3(a:ptr8, b:ptr8, c:ptr8, d:ptr8, result:ptr8)->ptr8: iteration_list = range(0,240) for i in iteration_list: j = int(i) result[j] = a[j] + b[j] ...

Just an idea, have you tried the following snippet: #include esp_adc_cal/esp_adc_cal.h This mirrors what happens for rmt: one includes driver/rmt.h which actually includes the file found at component/driver/include/rmt.h in the esp-idf folder. I cannot test this at the moment, so this is just an ide...

Another way to globally access data without having to resort to local/global is by using objects. class AnObject: def __init__(self): self.data = 0 def set(self, o): self.data = o def get(self): return self.data ob = AnObject() def test1(): ob.set(32) def test2(): if ob.get()==32: print("Test 1 done...

That reminds me: why does one brown out (matrix) and not the other (lite)? Is it because there is an IMU added?

Something else to check first - when the radio is active the ESP32 draws the most amount of current. It can sometimes spike to above 500mA and can reset if the power supply is inadequate. So perhaps quickly try a different USB power source and possibly even cable... Shame on me :oops:. It was the c...

Well, this is as I feared: I must have a faulty board. I tried with older versions (1.10 an 1.10) and got the same sequence: reboot when activating the RF part. >>> wlan.active(True) W (41515) phy_init: failed to load RF calibration data (0x1102), falling back to full calibration ets Jun 8 2016 00:2...