[Mil MYS-8MMX] Mil MYS-8MMQ6-8E2D-180-C Unpacking Report 2 - Power on

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[Mil MYS-8MMX] Mil MYS-8MMQ6-8E2D-180-C Unpacking Report 2 - Power on [Copy link]

The board has a standard USB port and a Type-C port , neither of which can be used for power input.

After connecting to the power supply, the board can be directly connected to the HDMI display to light up.

Figure 1: Power on

Interface after entering the system

Figure 2: Successful startup

The USB touch screen function cannot be used by default , probably because the driver is not loaded. Try to use the Type-C interface to connect the monitor, it seems not supported. Use the keyboard and mouse to open the system to view:

Figure 3. System information

Because the RTC battery is not installed, the time is definitely wrong.

According to the manual, use the 3.3V uart line to operate the board.

Figure 4: Serial line operation

Tried to use 5V serial line, no print echo.

The typical power was tested and found to be around 1.6W .

Figure 5. Normal working power

Enter the command: echo mem> /sys/power/state to enter sleep mode 1.

Figure 6. Sleep Mode 1

Testing its typical power, the actual measured power is about 0.23W .

Figure 7. Sleep Mode 1 Power

Enter the command: echo freeze> /sys/power/state to enter hibernation mode 2.

Figure 8. Sleep Mode 2

The typical power was tested and the actual power was around 0.9W .

Figure 9. Sleep Mode 2 Power

During the above test, affected by the power supply, the supply voltage is not the standard 5V , and as the power increases, the voltage decreases. The three power values are all lower than the values given in the manual. It is not ruled out that the input voltage is greater than the test value. According to the manual description: "The power supply is designed according to the 5V standard, and the input voltage range is 5V ± 10% . Please note that if a non -5V input power supply is used, it is necessary to ensure that the power supply has sufficient load capacity. That is, the total power consumption of the single board remains unchanged. The lower the power supply voltage you provide, the greater the output current requirement of the power supply will be." The input power supply can fluctuate between 4.5V and 5.5V , so it meets the power requirements.

Remaining issues:

After hibernation, the serial port becomes invalid and commands cannot be entered. It is not known how to recover from hibernation mode yet, so the device is restarted by powering off.

3qwe

soso

Looking forward to solving the problem and looking forward to follow-up.

freebsder

Portable display, fully equipped!