Windows IDE COM baud rates

Development Tools IDE 1.x
1

the windows IDE (version 1 8 19) tools command has an upload speed option. The possible choices offered (for an esp8266) are:
115200, 57600, 256000, 51200, 921600 and 3000000

The options on my com port using the Ch340 driver are:
75, 110,134, 150, 300, 600, 1200,1800, 2400, 4800, 7200,
9600, 14400, 19200, 38400, 57600, 115200, 128000

my only choice is 115200. this not the default baud rate (9600) when the ch340 has just been installed, and MAY not be the default rate after a windows reboot. I think it reverts back to 9600
you can change the CH340 baud rate using windows device manager and find the COM and LPT devices and change the settings to 115200.

Why does the IDE offer high baud rates that a Windows com port cannot support?

2

I'm reasonably sure that the baudrates that Windows device manager reports are the baudrates that are supported by Windows tools.

The IDE (and other application) can use any baudrate it likes; it is independent of what Windows reports.

Are you trying to solve a problem?

3

First because CH340 is a full device driver, and not the standard Windows COM port driver, and, second, remember it's a "virtual" serial port made from an USB connection, so it can do everything allowed by a virtual device driver (and USB throughput/speed).

4

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