The `channels` member should not be set to the number of hardware
channels *n*, but to *n* - 1 instead. The last channel is implicitly
used in `timer_read()`. Hence out of *n* hardware channels, only *n* - 1
are available to the application.
This fixes a bug introduced by 4d02e15247
which incorrectly set the channel number to *n* rather than to
*n* - 1.
The start/stop overhead that might by introduced by ztimer_acquire() and ztimer_release() called during ztimer_set() resp. ztimer_handler() should not be mesured here. It has its own adjustment field.
Furthermore, the overhead mesaurement uses ztimer_now(). It is allowed to called it only after the clock has been acquired.
When trying to compile `examples/hello-world` on my 465 MHz Mendocino
I got
/home/benpicco/dev/RIOT/makefiles/toolchain/gnu.inc.mk:29: extraneous text after 'ifneq' directive
Turns out the version of `make` on Archlinux32 is newer than that in
Ubuntu 22.04, which somehow ignored the extra parenthesis.
Turns out this (t)rusty old machine is still good for writing patches :D
Previously, the test vectors were encoded into the python test scripts,
converted to base64, and send over to the device under test via stdio.
The application sent back the output after converting it to base64
first, which was read back in by the test script and decoded. Finally,
the test script compared the result with the expected result.
This made the test complex, slow and, flanky, as stdio on interfaces
such as UART has a high bit error rate and some quirks (e.g. the EDBG
UART bridge e.g. in the samr21-xpro dropping bytes when bursts of more
than 64 bytes at a time are send).
This basically rewrites the test to embed the test vectors in the
firmware and do the comparison on the devices. This fixes test failures
on the samr21-xpro, the nRF52840-DK and likely many others. Also, it
is now fast.
Having to cast a password provided as `const char *` to
`const uint8_t *` is a needless pain in the ass when using the API.
Hence, fix it by accepting passwords and salts as `const void *`
instead.
