ESP32-S2 "Timed out waiting for SPI char" error

[HowdyMoto]

Hi All,

I see there have been plenty of other threads about this problem, but none of them offer solutions. My PyPortal Titano intermittently crashes with the error: "Timed out waiting for SPI char". I am running the very latest CircuitPython UF2 (tried 6.x a while back, 7.0, and now using 7.1 beta) along with the latest libraries. And I've updated the firmware to nina 1.7.4 from here: https://github.com/adafruit/nina-fw/releases/tag/1.7.4

The code I'm running just checks stock prices, and the source can be seen here:
https://github.com/HowdyMoto/StockTrack ... tal_Titano

When the issue happens, it's when it tries to request data from the server:

Code: Select all

def getprice(asset, pricelabel, changelabel):
    try:
        response = requests.get(URL_BASE + asset + URL_APIKEY + api_key + URL_FORMAT)
        response_json = response.json()

        price_unformatted = float(response_json["close"])
        price_delta_unformatted = float(response_json["change_p"])    # get the percentage change, which can be many decimal places

        price = "%.2f" % price_unformatted                            # Create a string from a float and round the price to 2 decimal places
        price_delta = "%.1f" % price_delta_unformatted                # Create a string from a float and round the price to 2 decimal places 

        if price_delta_unformatted >= 0:
            pricelabel.color = GREEN
            changelabel.color = GREEN
        else:
            pricelabel.color = RED
            changelabel.color = RED
        pricelabel.text = price
        changelabel.text = price_delta + "%"

    except (ValueError, RuntimeError) as e:
        print("Error: ", e)
        background_rect.fill = DARKRED
        microcontroller.reset()

The program never recovers from the error. So, I ended up just forcing the device to reboot when this happens with the last line. It's workable, but I really want to know a better way to handle this error, since I'm hoping to give some of these as holiday gifts to friends.