Currently, the LoRa SX126x driver dynamically creates at least one,
sometimes two, memoryview objects with each call to `_cmd`. This commit
simply provides the class with a long-lived memoryview object for `_cmd` to
easily slice as necessary.
Unlike the SX127x chips, Semtech unfortunately designed the SX126x modems
to be more command-centric (as opposed to directly setting registers).
Given the amount `_cmd` is called during normal device operation, even a
minor improvement here should have a decent impact.
Basic TX and RX tests pass on hardware.
Signed-off-by: Max Holliday <maholli@stanford.edu>
Changes are cosmetic - and maybe very minor code size - but not functional.
_reg_read() was calling struct.packinto() with an incorrect number of
arguments but it seems like MicroPython didn't mind, as result is correct
for both versions.
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
If send completes before the first call to poll_send(), the driver could
get stuck in _sync_wait(). This had much less impact before rp2 port went
tickless, as _sync_wait(will_irq=True) calls machine.idle() which may not
wake very frequently on a tickless port.
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
According to the docs, only freq_khz was needed for working output.
However:
- Without output_power setting, no output from SX1262 antenna (theory:
output routed to the SX1261 antenna).
- SF,BW,etc. settings were different from the SX127x power on defaults, so
modems with an identical configuration were unable to communicate.
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
- If no reset pin was set, calling standby() in the constructor
would enable the TCXO (XOSC) before the timeout was correctly set.
- This manifested as a BUSY timeout on the STM32WL5, first time after power
on reset.
- Clean up the general handling of BUSY timeouts, but also add some safety
margin to the base timeout just in case (not an issue, is only a stop-gap
to prevent the modem blocking indefinitely.)
Signed-off-by: Angus Gratton <angus@redyak.com.au>
For unknown reason, power output in this configuration is lower than it
should be (including when compared to the STM32Cube C libraries running on
the same board.
Suspect either the Nucleo board antenna switch or the power amplifier
registers are being set wrong, but the actual root cause remains elusive...
Signed-off-by: Angus Gratton <angus@redyak.com.au>
Support depends on hardware support in MicroPython.
Also includes some tweaks in the SX126x base class, to deal with slightly
different platform configuration on STM32WL55, longer timeouts, tx_ant
options, etc.
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
- For packages that were just x.y, update to x.y.0.
- For that were x.y.z-n, update to x.y.(z+1)
From now on we'll apply semver rules:
- MAJOR version when you make incompatible API changes
- MINOR version when you add functionality in a backward compatible manner
- PATCH version when you make backward compatible bug fixes
Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
Includes:
- component oriented driver, to only install the parts that are needed
- synchronous operation
- async wrapper class for asynchronous operation
- two examples with async & synchronous versions
- documentation
This work was funded through GitHub Sponsors.
Signed-off-by: Angus Gratton <angus@redyak.com.au>
Jatty Andriean