Mynewt (similar to Soft Device) has its own reference counting for
HFXO oscillator.
So far TinyUSB requested HFXO when VBUS was detected and stopped when
VBUS was removed.
But with Mynewt running HFXO can be stopped when other interested parties
don't require HFXO anymore. This results in very difficult to track
USB transmission errors.
This change enables Mynewt specific HFXO management in Soft Device fashion.
Remote wakeup requires 10ms of delay when RESUME bit
is toggled.
It was covered for OS build.
For non-OS build simple delay based on board_millis() is
used to wait required amount of time.
Without this remote wakup may not work.
Two boards from Olimex are added:
olimex_hmz144 with PIC32MZ2048EFM144
olimex_emz64.c with PIC32MZ2048EFH064
Both can be programmed with Segger JLINK probe using ICSP
interface. (JTAG not tested but could also work but header
is not mounted).
These are different Broadcom chips. The peripherals are essentially
the same. The main differences are:
* The CPU(s)
* The interrupt controller
* The peripheral base address (but not the peripherals that we use)
definition of DEBUG breaks Microchip pic32 builds for Mynewt.
When MCU is not VALENTYUSB_EPTRI there is no need to have any
preprocessor definitions.
It may not look like a big deal but for xc32 builds, compiler
automatically force-includes some file that have structure with field name
DEBUG that result in build error in dcd_eptri.c when this file
is not really needed.
Moving DEBUG and LOG_USB few lines down should not break eptri builds.
Three changes are needed to accommodate xc32 compiler build:
- optimized build flag other than -Os
added CFLAGS_OPTIMIZED that defaults to -Os but can be overridden in boards
- build without -lnosys
added LIBS_GCC with default libraries that can be changed in boards
- build without LD_FILE specification
if LD_FILE is empty -Wl,-T options is not added to LDFLAGS
