Description
Hardware:
Board: MAGTAG29_ESP32S2
Core Installation version: idf-release/v4.2
IDE name: Arduino CLI or Arduino IDE 8.1.13
Flash Frequency: build.flash_freq=80m
PSRAM enabled: Same results enabled or disabled
Upload Speed: 921600
Computer OS: Mac OS Mohave 10.14.6/Windows 10
Description:
After upload and reset USB serial port is not identified/found by OS.
Tested on Both Windows and Mac OS
Happens on a simple blink sketch, Serial.begin is called first line in setup.
Cloned a fresh release today where this was happening. Commit prior to below did not have this problem:
ESP-IDF update to 2bfdd036b and ESP-DSP
idf-release/v4.2 (#4485)
Code operates correctly (blinks) but no USB Serial port available.
Booting up ROM bootloader serial port comes up just fine /dev/cu.usbmodem01
Sketch:
// the setup function runs once when you press reset or power the board
void setup() {
// initialize USB serial converter so we have a port created
Serial.begin();
// initialize built in LED pin as an output.
pinMode(LED_BUILTIN, OUTPUT);}
// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}Debug Messages:
USB serial port not available