The current ATxmega clock_init enable DFLL to improve the accuracy of
the 2MHz and 32MHz internal oscillators. In some ATxmega revisions,
after started DFLL the clock become unstable. Add another sync point
for 32MHz internal oscilator.
Note: If clock is not stable, system won't switch from 2MHz to 32MHz
as main clock.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
Add ATmega328P Xplained Mini board. The board is an official
development kit from MCHP based on the Arduino UNO, reduced
hardware, with a xplainedmini debugger and CDC ACM serial
converter.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
Fix compilation with module `stm32_eth_link_up` when `stm32_eth_auto`
is not used by relying on the compiler to optimize unused functions
and variables out, rather than using the preprocessor.
This board is based on rak4260 with rak specific pinmappings.
ADC, LED and UART as well as USB ist supposed to work.
Mostly adopted from SAM R34 Xplained Pro board with adoption to rak pinout.
Netifs without link status support will keep sending discover
messages with increasing time between.
Netifs that support link status will wait for the link to be up,
and then start sending.
Netifs that support link status but send no link status events
will continue to not work (unless link status is up from the
first check when setting it up).
The previous sine wave cast signed integers into the PCM range, causing
jumps at zero transitions. This shifts everything up by the respective
maximum signed integer, so that the signed idle zero becomes the
unsigned PCM signal's idle half-point and can continuously cover the
whole unsigned range.
- Clear the PTP timer interrupt *after* the user callback is executed
- Otherwise it would be possible that the ISR sets another super
short timeout that triggers during ISR, which also gets cleared
- This is a pretty nasty race condition :-/
- The debug output was a bit too verbose to be generally useful. Some
noise is now silenced unless `DEBUG_VERBOSE` is `#define`d to 1
The additional warning message increases the size of the .rodata
section. For the Arduino Mega2560 this is placed in RAM (and flash), as
flash is not mapped into the data address space.
Reasoning:
- Many drivers already just generate these events regardless of configuration.
This will make behavior more consistent
- Run time configuration increases ROM, complexity and maintaining
effort
- At least NETOPT_TX_END_IRQ is now de facto mandatory, as the new
netdev driver API requires NETDEV_EVENT_TX_COMPLETE to always be
generated.
