# Update the firmware with RL-programmer on Windows with STM3CubeProgrammer

# Step 1. Download firmware

Download the latest firmware from Update the firmware page.

# Step 2.1. Install software

Install STM32CubeProgrammer (opens new window) to the default directory.

This tutorial is based on stm32cubeprg-win64-v2.15.

# Step 2.2. Connect the programmer

TIP

Be sure that your SWD pins on the node and the needle sides are connected correctly (3.3 to 3.3, GND to GND).

Prerequisites are:

An example of a connection is shown below.

connection-prog.png

TIP

SWD and CAN sockets look similar and they use the same 4-pin cable. SWD has 3.3V, but CAN has 5V. Don't mix them up.

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On the RL programmer VUSB led should be orange, 3.3 led should be red, ST-link led should be blue, and blink led should blink with yellow. If they are not, probably you are making something wrong. It also may indicate that the board works incorrectly.

# Step 2.3. Upload the firmware

It is expected to use STM32CubeProgrammer (opens new window).

  1. Open STM32CubeProgrammer.

  2. Connect the programmer to the PC via USB and target device to the programmer via SWD connectors as shown on the Step 3. Connect the programmer.

  3. Press Connect button, you will see corresponding Target information.

    Error: No debug probe detected. The programmer is not detected by your PC.

    Error: No STM32 target found!. The programmer is detected, but the node is not connected to programmer. It may refer to bad SWD connection between needles and the node. Try to slightly push the needles or change the connection angle.

    Error: Unable to list supported devices. Can't identify the device!. This error was reported once. It was gone after reinstalling the STM32CubeProgrammer software from custom to the default directory.

    If everything is fine, you will see the following:

    drawing

  4. Press Open file and choose firmware binary to be downloaded on chip. It should be the firmware binary that your downloaded in Step 1. Download firmware

    drawing

  5. Press Download

    drawing

  6. Reconnect the node

At that point, the firmware is succesfully downloaded. You can verify the software version by using gui_tool.

TIP

Its also possible to upload firmware using STM32_Programmer_CLI.exe

STM32_Programmer_CLI.exe -c port=SWD -d "<PATH_TO_FIRMWARE>\cyphal_example.bin" 0x08000000