AM5728 Core Board Factory Test Notes
AM5728 Core Board Factory Test Notes
When working with industrial computing boards, thorough testing and validation are crucial to ensure reliable operation and prevent potential issues. In this article, we will cover the factory test notes for the AM5728 core board, including eMMC formatting, power testing, and SPI flash flashing.
eMMC Formatting
Before proceeding with the factory test, it's essential to format the eMMC storage. The eMMC mounting, partitioning, and formatting process is well-documented in the article "eMMC mounting, partitioning, and formatting" by https://blog.csdn.net/u011975319/article/details/51803126. For the purpose of this article, we will assume that the eMMC has been properly formatted.
Power Testing
The first step in the factory test is to check for power short circuits on the board using a multimeter. It's also essential to verify that the input terminal power voltage and signal sequence are correct. After powering on the board, use a multimeter or oscilloscope to test the voltage at various power test points. In this case, Q1 is not conducting, which means that the LED (D1) is not lit. To resolve this issue, the resistance value of R9 needs to be adjusted.
Removing Resistors and Flashing U-Boot
To proceed with the test, remove R330, R333, R328, and R334. Then, navigate to the Windows system's sb_loader directory (cmd terminal) and enter the command sb_loader -f u-boot(2G).imx. This will use the sb_loader tool to flash the u-boot(2G).imx file into the board.
Internal eFuse Blowing
For detailed operation methods on internal eFuse blowing, refer to the chapter 'IMX6 Internal eFuse Blowing'.
SPI Flash Flashing File
To flash the SPI flash file, follow these steps:
> fatload mmc 0 10800000 u-boot.imx
or ext4load mmc 2 10800000 u-boot.imx
> sf probe
> sf erase 0 0xc0000
> sf write 10800000 0x400 $filesize
> reset
Final Steps
After completing the SPI flash flashing process, insert the SDCARD boot card and power on the board again. This will complete the factory test notes for the AM5728 core board.