OpenJTAG Articles

Debugging Case: Using OpenJTAG to Locate Hardware Bugs

2025-05-13 by boardor

Today, a customer visited us. Their company used S3C2440 to create a product and encountered some issues: 1. Sometimes the program can be burned to NOR Flash using H-JTAG, and sometimes it cannot; when it fails to burn, H-JTAG shows an error message “Unable to load driver”. 2. When it is lucky enough to burn … Read more

OpenJTAG Debugging Example: Resolving SST39VF1601 Erase Issue

2025-04-18 by boardor

Many development boards use NOR Flash such as AM29LV800 or AM29LV160, and can operate normally with the u-boot provided by this website; yesterday, a user discovered that they could not erase SST39VF1601, for example, the following phenomenon occurred: when attempting to erase a sector starting at 0x2000, it showed success, but reading the contents revealed … Read more