Beware of that 1PPS signal. A few years ago I bought several GPS modules and
compared the signals. Some differ by exactly 100ns (within 2ns, the accuracy of
my scope) from others, and that is not the width of the pulse, that is much
wider, I compared only the edge that are comes close to the ot
On 2022-01-19 19:40, TimH wrote:
FAT seems broken for NOR flash devices. Spent days getting nowhere.
Since FAT and flash devices don't really play well together anyway
(already found s512 erases a flash sector at least 4 times when
writing a cluster), so I'm wondering, in parallel, if NuttX ha
On 2022-01-20 13:11, Xiang Xiao wrote:
On Thu, Jan 20, 2022 at 7:33 PM Jukka Laitinen
wrote:
Hi,
Sorry if this question comes several times, it seems that for some
reason my emails are not always coming through to the mailing list... So
re-sending.
I started getting this build error from
On 2022-01-19 19:40, TimH wrote:
FAT seems broken for NOR flash devices. Spent days getting nowhere.
Since FAT and flash devices don't really play well together anyway
(already found s512 erases a flash sector at least 4 times when
writing a cluster), so I'm wondering, in parallel, if NuttX ha
A trick I often used was writing to the volatile (!) CS pin control
register twice (or more).
The extra writes change nothing, but provide the tiny delay.
The compilers never optimized the extra writes away.
An obj file dumper and scope are handy to check the actual generated
code and delay.
A
iles without
sources.
Still studying...
Regards,
Arie de Muijnck
