WeActStudio.USB2CANFDV1

SLCAN Protocol Description

Using the virtual serial, the command is as follows:

• O[CR] - Opens the CAN channel
• C[CR] - Closes the CAN channel
• S0[CR] - Sets the nominal bit rate to 10k
• S1[CR] - Sets the nominal bit rate to 20k
• S2[CR] - Sets the nominal bit rate to 50k
• S3[CR] - Sets the nominal bit rate to 100k
• S4[CR] - Sets the nominal bit rate to 125k (default)
• S5[CR] - Sets the nominal bit rate to 250k
• S6[CR] - Sets the nominal bit rate to 500k
• S7[CR] - Sets the nominal bit rate to 800k
• S8[CR] - Sets the nominal bit rate to 1M
• sddxxyyzz[CR] - Custom nominal bit rate (60MHz CAN clock)
• Y0[CR] - Sets the CANFD data segment bit rate to 500k
• Y1[CR] - Sets the CANFD data segment bit rate to 1M
• Y2[CR] - Sets the CANFD data segment bit rate to 2M (default)
• Y3[CR] - Sets the CANFD data segment bit rate to 3M
• Y4[CR] - Sets the CANFD data segment bit rate to 4M
• Y5[CR] - Sets the CANFD data segment bit rate to 5M
• yddxxyyzz[CR] - Custom CANFD data segment bit rate (60MHhz CAN clock)
• tiiildd...[CR] - Transmits data frame (standard ID) [ID, length, data]
• Tiiiiiiiildd...[CR] - Transmits data frame (extended ID) [ID, length, data]
• riiil[CR] - Transmits remote frame (standard ID) [ID, length]
• Riiiiiiiil[CR] - Transmits remote frame (extended ID) [ID, length]
• diiildd...[CR] - Transmits CANFD standard frames (without BRS enabled) [ID, length, data]
• Diiiiiiiildd...[CR] - Transmits CANFD extended frames (without BRS enabled) [ID, length, data]
• biiildd...[CR] - Transmits CANFD standard frames (BRS enabled) [ID, length, data]
• Biiiiiiiildd...[CR] - Transmits CANFD extended frames (BRS enable) [ID, length, data]
• V[CR] - Reads the firmware version
• X[CR] - Enters firmware upgrade mode

[CR] : 0x0D (hex), \r (ascii)

Please find more information in the doc directory or the wiki.

How to compile firmware

Use STM32CubeIDE 1.18.0 or later.

How to upgrade firmware

Use the upgrade tool in the root repository.

Note: After flashing this firmware, there would be an issue upgrading to another firmware. You should manually send X[CR] command before upgrade or force upgrade mode by shorting DIO and GND as described in the root repository.