all: add a flag to the command line to select the serial implementation

mirror of https://github.com/tinygo-org/tinygo.git synced 2026-08-18 11:33:59 +00:00

This can be very useful for some purposes:

  * It makes it possible to disable the UART in cases where it is not
    needed or needs to be disabled to conserve power.
  * It makes it possible to disable the serial output to reduce code
    size, which may be important for some chips. Sometimes, a few kB can
    be saved this way.
  * It makes it possible to override the default, for example you might
    want to use an actual UART to debug the USB-CDC implementation.

It also lowers the dependency on having machine.Serial defined, which is
often not defined when targeting a chip. Eventually, we might want to
make it possible to write `-target=nrf52` or `-target=atmega328p` for
example to target the chip itself with no board specific assumptions.

The defaults don't change. I checked this by running `make smoketest`
before and after and comparing the results.

This commit is contained in:

Ayke van Laethem

2021-06-01 13:27:58 +02:00

committed by

Ron Evans

parent 75298bb84b

commit 96e863f0f3

114 changed files with 185 additions and 104 deletions

									
										src/machine/board_atsame54-xpro.go
									
		-2
	
												View File
												
				@@ -15,8 +15,6 @@ const (

					BUTTON = PB31

				)

				var Serial = USB

				const (

					// https://ww1.microchip.com/downloads/en/DeviceDoc/70005321A.pdf