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Can't read Secure Region with Segger J-Link on LPC55S69-EVK

Question asked by Chris Coleman on Jul 18, 2019
Latest reply on Jul 24, 2019 by ZhangJennie

When using SEGGER JLink, I can't seem to read memory in the secure region from GDB. For example on the hello_world_ trustzone demo app in the sdk, I always see access errors for secure regions reads


(gdb) x/a *(uint32_t*)0x30000000
Cannot access memory at address 0x30000000


but non-secure regions work fine:


(gdb) x/a *(uint32_t*)0x20008000
0x20008920:    0x20008898


Any ideas on how to fix this? Thanks!