I designed a prodcut with ESP32S3NxR2 and the firmware was set to using quad PSRAM lines. However, due to stock issue a recent batch was assembled with ESP32S3NxR8. While I was told the R8 version is compatible with R2 in quad mode, it turned out to be not true and I was getting
Code: Select all
E (323) quad_psram: PSRAM ID read error: 0x00ffffff, PSRAM chip not found or not supported, or wrong PSRAM line mode
E (324) cpu_start: Failed to init external RAM, needed for external .bss segment
Regards,
YW