- Fix UART & putChar
- Timer-based sleep
- Enable systick in abort
- Buffered, interrupt-based UART TX
- Use the new interrupt API and fix sleepTicks
- Make pins behave more like other boards
- Use the MCU's UART numbering
- Allow interrupts to wake the scheduler (#1214)
The BUILDING.md file is not intended for developer builds but for
release builds. The website contains more specific and more complete
information on how to build TinyGo, so provide links to these pages.
The Windows link doesn't work yet, but should work with the next
release when we update the website.
This is needed to avoid linking errors because the globals are placed
in memory at address 0x80000000 which is out of bounds for the default
code model.
The `machine.Pin` type was a int8, which works fine but limits the
number of pin numbers to 127. This patch changes the type to uint8 and
changes NoPin to 0xff, which allows more pins to be used.
Some boards might not have that many pins but their internal
organization requires more pin numbers to be used (because it is
organized in pin ports and not all pins in a port have a physical
connection). Therefore the range of a int8 is too low to address these
higher pins.
This patch also has the surprising side effect of reducing binary size
in a number of cases. If there is a reduction it's usually just a few
bytes, with one outlier: the driver example amg88xx when compiled for
the pybadge board. I have not seen any increases in binary size.
It was `avr-atmel-none`, which is incorrect. It must be
`avr-unknown-unknown`.
Additionally, there is no reason to specify the target triple per chip,
it can be done for all AVR chips at once as it doesn't vary like
Cortex-M chips.
Commit fc4857e98c (runtime: avoid recursion in printuint64 function)
caused a regression for AVR. I have tried locally with LLVM 11 (which
contains a number of codegen bugs) and the issue is no longer present,
so I'm assuming it's a codegen bug that is now fixed. However, LLVM 11
is not yet released so it seems best to me to work around this
temporarily (for the next few months).
This commit can easily be reverted when we start using LLVM 11.
