Support a USB interface that shows up as a canbus adapter to linux.
Route both local and real canbus packets over that interface.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Rename the canbus.c code to canserial.c and introduce new wrapper
functions in canbus.c that connect the low-level canbus hardware code
to the high-level canserial.c code.
This is in preparation for adding "usb to canbus bridge mode".
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Move the uuid hash calculation to canbus.c and call canbus_set_uuid()
from src/stm32/chipid.c . This simplifies the low-level canbus
hardware code.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Previously the code had canbus_read() which was called from task
context (for admin messages), and canbus_process_data() which was
called from irq context (used for data messages). Change that to a
single canbus_process_data() function that is called from irq context
(used for all messages). This simplifies the low-level hardware
specific canbus code and should make it easier to support other
hardware implementations.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
The CanBoot bootloader can often fit in 4KiB and that may be useful
for some devices with small flash sizes.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This is needed for the Creality Ender 3 S1 with the STM32F401 chips to enable a 64kib bootloader offset
Signed-off-by: James Hartley <james@hartleyns.com>
The stm32 specs indicate that the SPE bit must be cleared before
changing the CPHA or CPOL bits.
Reported by @cbc02009 and @bigtreetech.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
It's possible for the SCLK pin to still be updating even after the
last byte of data has been read from the receive pin. (In particular
in spi mode 0 and 1.) Exiting early from spi_transfer() in this case
could result in the CS pin being raised before the final updates to
SCLK pin.
Add an additional wait at the end of spi_transfer() to avoid this
issue.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Unify the handling of the enable_pclock() and is_enabled_pclock() code
across all stm32 chips. All chips will now perform a peripheral reset
on enable_pclock() (this is a change for stm32f0 and stm32h7). The
enable_pclock() code will now also disable irqs during the enable.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Avoid read-modify-write operations where possible. The register
values are in a known state so prefer absolute writes.
Improve handling of race conditions with hardware updates.
Remove the adc reference from "struct gpio_adc" as it is a constant.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Use a fixed layout for the USB transfer memory and remove the ep_mem
struct definition.
This is in preparation for stm32g0 support.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
BIGTREETECH
Kevin O'Connor
adelyser
Kamil Trzciński
Eric Callahan
JamesH1978
alstoepp
Sergey1560