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@devanlai devanlai released this 09 Sep 16:57
· 39 commits to master since this release
v1.30
a6d4d4f

dap42 firmware release 1.30

This release includes CDC-ACM performance enhancements, CAN->USB support, and a bootloader update.

Changelog

CDC-ACM enhancements

  • The serial port now uses a DMA-driven circular buffer for receiving data on the hardware UART.
    • On F042 based targets, the receive buffer has been bumped from 128B to 1024B
    • On F103 based targets, the receive buffer has been bumped from 1024B to 4096B
  • The serial port has been stress-tested up to 2 MBaud on F042 targets and 2.25 MBaud on F103 targets.
  • The CDC-ACM driver now uses the USB SOF event for framing transfers instead of a timeout.

CAN->USB support

  • CAN-capable targets now expose a second CDC-ACM interface that encodes CAN frames using the slcan/Lawicel CANUSB protocol.
  • The slcan interface has been tested with USBtinviewer, the socketcan slcand daemon, and the UAVCAN GUI Tool.
  • Only F042-based targets can collect CAN frames while connected over USB.
  • Currently, the only official target with CAN enabled is the BRAINV3.3
    • To share CAN frames with the debugger, connect the CAN transceiver's RX pin to pin P0_15.
    • The debugger can only receive frames in listen-only/silent mode - it cannot transmit or ACK frames.
    • The BOOT0 pin must be disabled to use CAN - see FLASHING.md for details.

Bootloader update

  • The bundled dapboot DFU bootloader for DAP103 STLink targets has been updated from version 1.0 to version 1.10.
    • Version 1.10 re-enables DFU upload (reading out the existing firmware) and prevents writing past the end of flash.
  • To update the bootloader and the debugger firmware at the same time, you can flash the DAP103-dapboot-combined-stlink-updater.bin updater over DFU, which will upgrade the bootloader and install DAP103 version 1.30.

Prebuilt binaries

Binaries for F042 targets

  • DAP42.bin is the firmware for native dap42 hardware.
  • BRAINv3.3.bin is the firmware for dap42 hardware embedded into CalSol's custom LPC1549 development board.

Binaries to flash onto STLink/v2 clones via SWD

  • DAP103-dapboot-combined-stlink.bin contains the debugger firmware bundled with the dapboot DFU bootloader.
  • DAP103-stlink.bin is just the debugger firmware, with no firmware upgrade capabilities.

Binaries to upgrade reprogrammed STLink/v2 clones via DFU

  • DAP103-DFU-stlink.bin is just the updated debugger firmware.
  • DAP103-dapboot-combined-stlink-updater.bin is a bootloader updater that overwrites the bootloader and itself with the contents of DAP103-dapboot-combined-stlink.bin after loading it over DFU.

Sources

Full source code for the dap42 project can be found online:

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