The Simple HW detection was detecting the
Pixhack V3 as a mini.
This commit adds further discrimination, based on
the fact the Pixhack V3 left VDD_5V_PERIPH_EN
floating. Where a mini ,V2, V3 HW has it connected
to the active low enable of the VDD_5V_PERIPH and
VDD_5V_HIGHPOWER via a 10K pull down.
The detection enables the 40K pull up and samples
the pin. This reads back as a logical one on the
Pixhack V3, and a logical zero on the Mini.
Since the float is applied some 3.3 Ms post pin setting
at reset the 10 us should leave the 5 Volt supplies in
the on state because of the 10K pull down.
This is assuming typical 40K pullup 10K pull down
This results in typical 0.66V (.875V max) on the /EN pin
which should not be detected as a high on the TPS2041.
The fix ix in nuttx. This is just the defconfig changes to use
it.
There were 2 problems. The first was that the interrupt did
test DINT and raise a completion events. But since DINT is
just an indication of DMA completion, TC is a valid way to
determine that the transfer is complete.
The second problem is that Software Reset For DAT Line
SDHC_SYSCTL[RSTD] clears the bits 24-0 in SDHC_PROTO
this looses the wide bus setting DTW
Flash programing on the K66 has to be units of 8 bytes. So we cache
the write of words until there are 2 written. Then the 2 words are
written to FLASH. This change ensure the bin file has an even
number of (4 byte) words by padding the last section in progflash
with 0xffffffff if needed.
Since the only device on the bus is the barro, int or ext does
not apply. This will be fixed on the rev > RC15.
This defines an alias that can be used to condition the buss logic
connection logic px4_i2c_bus_external to return external.
ChristophTobler
Daniel Agar
David Sidrane
Dennis Mannhart
Beat Küng