Disable tx state machine before resetting it
Check for rx message with same id as tx but different payload
Do not use canrx line to alter bit timing of cantx line
Improve bit time synchronization with slow transmitters
Implement tx synchronization to faster transmitters
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Avoid some gcc warnings by using uint32_t for iterators
Better document the fallthough case statement in crc_bytes()
Fix txpending race from report_line_ackdone()
Make can2040_transmit() multi-cpu atomic
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Fix PIO "sync" register overflow check
Reduce latency of tx scheduling
Clear ackdone irq from report_note_eof_success()
Defer ack inject until after rx fifo drained
Improve passive/dominant bit conflict check on tx reschedule
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Minor comment change to unstuf_pull_bits()
Introduce unstuf_get_raw() helper function
Move crc stuffed bit calculation to data_state_go_crc()
Restore stuffed_bits state on missing ack
Use a single pio_irq_set() function
Reschedule tx if previous tx unexpectedly finished transmit
Simplify report_state handling
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Fix gpio function selection for PIO1 usage.
Minor variable name changes.
Allow scheduling tx "matched" event after a crc match.
Allow for up to 5 passive bits after unstuf_clear_state().
Pause PIO "rx" bit reception after 10 passive bits.
Signal the CPU to process data every 10 read bits.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Rename to "match" state machine instead of "ack".
Minor simplification to tx_note_crc_start().
Call pio_match_clear() from report functions.
Add pio_match_calc_key() helper function.
Raise irq after 6 passive eof bits for faster rx message notification.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This adds `make flash` support for the rp2040 target. Flashing is
performed using a custom `rp2040_flash` tool that uses the PICOBOOT
protocol. Root is not required.
The user specifies the serial device of the rp2040 they wish to flash as
the device. This device is reset into bootsel mode and `rp2040_flash`
is invoked on the original USB device path.
If the device is already in bootloader mode, the user can specify
'first' as `FLASH_DEVICE` which will simply invoke `rp2040_flash` with
no bus/address options.
Signed-off-by: Lasse Dalegaard <dalegaard@gmail.com>
Commit ae89a659 caused a regression in the lpc176x UART handling.
After that commit the UART clock divisor would need to be 6.25 on
lpc1768 or 7.5 on lpc1769, but the code only supports whole numbers.
Set the PCLKSELx registers at startup and return to using full speed
peripheral clocks.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
FatFS is an open source filesystem library supporting FAT12, FAT16, FAT32, and exFAT. The source is available at http://elm-chan.org/fsw/ff/00index_e.html
Signed-off-by: Eric Callahan <arksine.code@gmail.com>
Remove infrequently used menu options (custom file loading/saving and
developer modes). Simplify the help screen.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Improved CAM bus ID generation, there were issues with ID collisions.
Added a small fast hash library.
Signed-off-by: Pontus Borg <liquidpontus@yahoo.se>
Initial support for stm32f2 in general and STM32F207 in particular.
Boots up and communicates on STM32F207VC.
Signed-off-by: Boleslaw Ciesielski <combolek@users.noreply.github.com>
Frederic Morin