Other Parts Discussed in Thread: CC2640
Hi All
Target board: CC2640R2 launchpad
The damage chip can not do any function on Flashprogrammer2 and shows it is locked.
Follow the tips to force mass erase the chip. Flashprogrammer2 shows success, but CC2640R2 can not handle any debug commands(Erase, Program, Read).
After the mass erase is done, the strange situation is that flashprogrammer2 shows that the RAM size is 16KB(normal is 20KB), and package size shows unknow(normal is 7x7).
Before the chip is locked, it was using SPI bootloader to update the FW. Somehow, the cc2640 shows locked on flashprogrammer2 when we want to Erase the chip.
This problem happened twice (normally, there is no such problem), so we have 2 CC2640R2 has been damaged and can not be recovered. Note that the bootloader update includes the CCFG area.
BR,
Jack