F&S Support Forum

Hello,

1. Is the uboot that is build with the yocto build that one that is already installed on the board?
By default, yes but if you have a special customer variant it may differ.


2. What would be the easiest way to modify it?
The easiest way would be the…

Hi there,
we have a two color indicator LED connected to two GPIOs. The LED shows different states of the system. As the LEDs are controlled by the M7 so it takes some time till the user can see that the system is running.
What we need, is that both…

Hello Didier,

• UART_B is the direct UART signal with TTL, so a RS232 transceiver is still needed. For revision 1.00 switch the RX- and TX-signal.
• UART_C on pin 36 + 38 should already be the RS232 signals and active. No need to change the device-tree. You

…

Thanks for the feedback.

Just to avoid misunderstandings, can you confirm the following?

* UART_B (pin13+15) is on a rev 1.00 board a regular RS232, but with TTL levels?
* UART_C is the default UART on pin 36+38, so nothing to be changed in the device tree…

Hello Didier,

it is the label on the HDMI port, but revision 1.00 is enough.

For UART_B the RX and TX pads are switched, but you can set them right via the pinctrl in the Device-Tree.
Under arch/arm64/boot/dts/F+S/armstonemx8mp.dtsi:
(Code, 10 lines)

You will…

Hi,

When booting, U-boot shows the following
(Code, 23 lines)

I see "Board: armStoneMX8MP Rev 1.00 (2x LAN, WLAN, eMMC, 1x DRAM)", so I assume this is Rev 1.00?

Not sure how to get the serial number. Don't see a label on the board with the serial number (but…

Hello,

for UART_B and UART_C there are different hardware variants. Could you post the revision of your board as well as the serial number on the label?
If you do not want to share the serial number here, you can also write an E-Mail to support@fs-net.de…

Dear F&S support,

We are currently migrating our software from an ArmstoneA9r2/r4 running WEC 7 to ArmstoneMX8MP.We want to maintain our interface board as much as possible without hardware changes.
To accomplish that, we want to ensure UARTs are on the…

Hello,

an USB Hub does should not make a difference, software-wise.

Did you check if your 5V USB voltage is present when running "usb start"?
You do not seem too have connected USB_A_POWERON, so you would need a static 5V USB power supply on your baseboard.…

Hello,

thanks for your response!

There was an issue in my schematic: The +5V only go into the IN line of the MIC2026, but not on the OUTA line (as it is in the case of your SINTF board).

I fixed it by connecting the 5V to the OUTA line. It works now.



Thanks!…