RH02 Plus (2026)
Overview
The Jhoinrch RH02 Plus (2026) is a dedicated USB to CAN FD adapter board. More information can be found on the Jhoinrch website.
Hardware
The Jhoinrch RH02 Plus (2026) is equipped with a STM32G431CB microcontroller and features a USB-A plug, a
terminal block for connecting to the CAN bus, three LEDs (PWR, STATE, WORK), a BOOT switch, and a switch
for enabling a 120 Ω CAN termination resistor. It advertises a max speed of 5 Mbps.
Supported Features
The rh02_plus_2026 board supports the hardware features listed below.
- on-chip / on-board
- Feature integrated in the SoC / present on the board.
- 2 / 2
-
Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files. -
vnd,foo -
Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.
rh02_plus_2026/stm32g431xx target
On-target memory for this board target: 32 KiB of RAM, 64 KiB of Flash.
Type |
Location |
Description |
Compatible |
|---|---|---|---|
CPU |
on-chip |
ARM Cortex-M4F CPU1 |
|
ADC |
on-chip |
STM32 ADC2 |
|
CAN |
on-chip |
STM32 FDCAN CAN FD controller1 |
|
Clock control |
on-chip |
STM32 RCC (Reset and Clock controller)1 |
|
on-chip |
STM32 HSE Clock1 |
||
on-chip |
|||
on-chip |
STM32 LSE Clock1 |
||
on-chip |
STM32G4 main PLL1 |
||
Comparator |
on-chip |
STM32G4 series Comparator4 |
|
Counter |
on-chip |
STM32 counters10 |
|
CRC |
on-chip |
STM32 CRC calculation unit1 |
|
DAC |
on-chip |
STM32 family DAC2 |
|
DMA |
on-chip |
STM32 DMA controller (V2)2 |
|
on-chip |
STM32 DMAMUX controller1 |
||
Flash controller |
on-chip |
STM32 Family flash controller1 |
|
GPIO & Headers |
on-chip |
STM32 GPIO Controller7 |
|
I2C |
on-chip |
STM32 I2C V2 controller3 |
|
I2S |
on-chip |
STM32 SAI Block controller1 |
|
Interrupt controller |
on-chip |
ARMv7-M NVIC (Nested Vectored Interrupt Controller)1 |
|
on-chip |
STM32 External Interrupt Controller1 |
||
LED |
on-board |
Group of GPIO-controlled LEDs1 |
|
MTD |
on-chip |
STM32 flash memory1 |
|
NVMEM |
on-chip |
Fixed layout for Non-Volatile memory1 |
|
OPAMP |
on-chip |
STM32G4 OPAMP3 |
|
OTP memory |
on-chip |
||
PHY |
on-chip |
This binding is to be used by all the usb transceivers which are built-in with USB IP1 |
|
Pin control |
on-chip |
STM32 Pin controller1 |
|
PWM |
on-chip |
STM32 PWM8 |
|
Reset controller |
on-chip |
STM32 Reset and Clock Control (RCC) Controller1 |
|
RNG |
on-chip |
STM32 Random Number Generator1 |
|
RTC |
on-chip |
STM32 RTC1 |
|
Sensors |
on-chip |
STM32 quadrature decoder5 |
|
on-chip |
STM32 family TEMP node for production calibrated sensors with two calibration temperatures1 |
||
on-chip |
STM32 VREF+1 |
||
on-chip |
STM32 VBAT1 |
||
Serial controller |
on-chip |
STM32 USART3 |
|
on-chip |
STM32 UART1 |
||
on-chip |
STM32 LPUART1 |
||
SMbus |
on-chip |
STM32 SMBus controller3 |
|
SPI |
on-chip |
STM32 SPI controller with embedded Rx and Tx FIFOs3 |
|
USB Type-C Port Controller |
on-chip |
STM32 USB Type-C / Power Delivery1 |
|
Timer |
on-chip |
ARMv7-M System Tick1 |
|
on-chip |
STM32 low-power timer (LPTIM)1 |
||
on-chip |
STM32 timers10 |
||
USB |
on-chip |
STM32 USB controller1 |
|
Watchdog |
on-chip |
STM32 watchdog1 |
|
on-chip |
STM32 system window watchdog1 |
System Clock
The STM32G431CB PLL is driven by an external crystal oscillator (HSE) running at 25 MHz and configured to provide a system clock of 160 MHz. This allows generating a FDCAN1 core clock of 80 MHz.
Programming and Debugging
The rh02_plus_2026 board supports the runners and associated west commands listed below.
| flash | debug | debugserver | attach | rtt | |
|---|---|---|---|---|---|
| dfu-util | ✅ (default) | ||||
| openocd | ✅ | ✅ (default) | ✅ | ✅ | ✅ |
Build and flash applications as usual (see Building an Application and Run an Application
for more details). For activating USB DFU via the ROM bootloader, flick the BOOT switch
down while plugging into a USB port prior to flashing.
Here is an example for the Blinky application.
# From the root of the zephyr repository
west build -b rh02_plus_2026 samples/basic/blinky
west flash