3 Commits

Author SHA1 Message Date
Ayke van Laethem 96e863f0f3 all: add a flag to the command line to select the serial implementation
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.
2021-06-25 17:58:39 +02:00
Ayke van Laethem 3f680b75f3 sam: remove redundant build tags
Some build tags were duplicated. This commit removes them.
2020-11-15 16:19:51 +01:00
jreamy 04f65f1189 Adding support for the Arduino Zero (#1365)
* machine/arduino-zero: adding support for Arduino Zero

Co-authored-by: Ayke
Co-authored-by: Jack Reamy
2020-09-10 10:32:12 +02:00