Tech wonk who works in and around entertainment. I have acted in front of the camera (member of SAG/AFTRA) and worked with special effects engineers and prop builders doing specialty embedded circuits and code. I specialize in the Parallax Propeller processors, but am giving the ESP (via M5Stack) a go.
I have been using M5Burner and the Arduino IDE to download demos into the M5StickC Plus2 -- all was fine and then I started getting this message.
A fatal error occurred: Failed to connect to Espressif device: Wrong boot mode detected (0xb)! The chip needs to be in download mode.
I fails to download anything at any baud from M5Burner or the Arduino IDE. Did my stick go bad? I just received it about a week ago.
I'm working on a timer application. It runs fine, but when the timer updates there is a distinct (and bothersome) flash. It's as if the process fills the space used by the text with the background color, and then writes the text on top of that. This is the code fragment.
void display_mmss(uint8_t mm, uint8_t ss, uint16_t fc, uint16_t bc)
{
char timeStr[6] = {'0', '0', ':', '0', '0', '\0'};
timeStr[0] = char('0' + (mm / 10));
timeStr[1] = char('0' + (mm % 10));
timeStr[3] = char('0' + (ss / 10));
timeStr[4] = char('0' + (ss % 10));
m5.lcd.setTextColor(fc, bc);
m5.lcd.setTextDatum(CC_DATUM);
m5.lcd.setFreeFont(&Digital7Mono65pt7b);
m5.lcd.drawString(timeStr, 160, 120);
}
(My code is properly indented -- this forum doesn't seem to allow for that)