Windows/JTAG-SERIAL Issues

[bjoernQ]

Flashing on Windows (11) via JTAG-SERIAL has some issues

• the chip is not reset after flashing
• monitoring doesn't start after flashing if invoked with the --monitor option (most probably because it "hangs" in an attempt to reset the chip?)

Manually pushing the reset button and using "espmonitor" works however.

Windows Version: Microsoft Windows [Version 10.0.22000.556]

Used the ESP-Rust board, also a vanilla ESP32C3 shows the same behavior

[MabezDev]

@JurajSadel I believe you ran into this at one point? Any ideas?

[bjoernQ]

I can make it locally work for me with replacing reset in connection.rs with this

pub fn reset(&mut self) -> Result<(), Error> {
        sleep(Duration::from_millis(100));

        if self.port_info.pid == USB_SERIAL_JTAG_PID {
            self.serial.write_data_terminal_ready(false)?;
            self.serial.write_request_to_send(false)?;

            sleep(Duration::from_millis(100));

            self.serial.write_data_terminal_ready(false)?;
            self.serial.write_request_to_send(false)?;

            sleep(Duration::from_millis(100));

            self.serial.write_request_to_send(true)?;
            self.serial.write_data_terminal_ready(false)?;
            self.serial.write_request_to_send(true)?;

            sleep(Duration::from_millis(100));

            self.serial.write_data_terminal_ready(false)?;
            self.serial.write_request_to_send(false)?; 
    
        } else {
            self.serial.write_data_terminal_ready(false)?;
            self.serial.write_request_to_send(true)?;
    
            sleep(Duration::from_millis(100));
    
            self.serial.write_request_to_send(false)?;    
        }

        Ok(())
    }

Probably even less code would do ... just copied and adapted the code from reset_to_flash - CTRL+R still doesn't work then since there we have similar code duplicated (so changing it there should do the trick) - however I'm wondering why it's apparently just me and why it's only on Windows

[JurajSadel]

@MabezDev For some reason, the SW reset or write_requet_to_send() is not working correctly on Windows, when the chip (with USB-serial-JTAG) is in download mode. Unfortunately, I don't know the root cause of this, yet - if it's in serialport or in a deeper layer like the driver, for example, and I'm not sure, how to debug it. I'm sorry I didn't bring anything new to this issue.

@bjoernQ you're not alone, I do have the same issues on Windows.