The UM232H is a USB-to-serial/FIFO development module in the FTDI product range which utilizes the FT232H USB Hi-Speed (480Mb/s) single-port bridge chip to handle the USB signaling and protocols. Official reference can be found here
[env:myenv] platform = ... board = ... debug_tool = um232h
If you would like to use this tool for firmware uploading, please change upload protocol:
[env:myenv] platform = ... board = ... debug_tool = um232h upload_protocol = um232h
macOS contains default FTDIUSBSerialDriver driver which conflicts with debug tools which are based on this chip. FTDI Chip company recommends removing this default driver from a system. Everything should work after system rebooting. See detailed instruction in official application note (Page 16, Section 4: Uninstalling FTDI Drivers on OS X) AN134: FTDI Drivers Installation guide for MAC OS X
Please install “udev” rules 99-platformio-udev.rules. If you already installed them before, please check that your rules are up-to-date or repeat steps.
Please read 4. UM232H Pin Out and Signal Descriptions section for details.
|UM232H Pin||Board JTAG Pin||Description|
|AD0||TCK||JTAG Return Test Clock|
|AD1||TDI||Test Data In|
|AD2||TDO||Test Data Out|
|AD3||TMS||Test Mode State|
You will also need to connect VIO to V3V and USB to 5V0 of UM232H to power the FTDI chip and board. See UM232H Datasheet
|GigaDevice GD32V||The GigaDevice GD32V device is a 32-bit general-purpose microcontroller based on the RISC-V core with an impressive balance of processing power, reduced power consumption and peripheral set.|
|Arduino||Arduino Wiring-based Framework allows writing cross-platform software to control devices attached to a wide range of Arduino boards to create all kinds of creative coding, interactive objects, spaces or physical experiences|
|GigaDevice GD32V SDK||GigaDevice GD32VF103 Firmware Library (SDK) is a firmware function package, including programs, data structures and macro definitions, all the performance features of peripherals of GD32VF103 devices are involved in the package|
For more detailed
board information please scroll tables below by horizontal.
|Sipeed Longan Nano||GigaDevice GD32V||External||GD32VF103CBT6||108MHz||128KB||32KB|
|Sipeed Longan Nano Lite||GigaDevice GD32V||External||GD32VF103C8T6||108MHz||64KB||20KB|
|Wio Lite RISC-V||GigaDevice GD32V||External||GD32VF103CBT6||108MHz||128KB||32KB|