Search found 4 matches

by gschorcht
Tue May 17, 2022 5:24 am
Forum: Documentation
Topic: ESP32-S3 Instruction Set
Replies: 7
Views: 7382

Re: ESP32-S3 Instruction Set

Possibly something else to try is to change both the speed of the flash (it's in menuconfig under serial flasher config, iirc) as well as the speed of the PSRAM to 80MHz. Solved. Thanks for that hint. The reason was that the bootloader was compiled with flash frequency 40 MHz and not with 80 MHz wh...
by gschorcht
Sun May 15, 2022 3:59 pm
Forum: Documentation
Topic: ESP32-S3 Instruction Set
Replies: 7
Views: 7382

Re: ESP32-S3 Instruction Set

Can you tell a bit more about the hardware you're doing this on (devboard or custom hw, ESP32 version, what flash/psram you're using) and what ESP-IDF this is? It feels like this is some glitch in setting the clock we need to work around somehow. I'm using a ESP32-S3-DEVKITC-1-N8R2-ND board with ES...
by gschorcht
Thu May 12, 2022 2:53 pm
Forum: Documentation
Topic: ESP32-S3 Instruction Set
Replies: 7
Views: 7382

Re: ESP32-S3 Instruction Set

Given the fact it's in a function to do with the psram clock and the psram is on the same bus as the flash, I'm wondering if the actual issue is not that something mis-configures that bus, corrupting flash reads, and fetching the next instructions in that function result in garbage. Indeed, it seem...
by gschorcht
Tue May 10, 2022 11:53 am
Forum: Documentation
Topic: ESP32-S3 Instruction Set
Replies: 7
Views: 7382

ESP32-S3 Instruction Set

Hi, I get a StoreProhibitedCause exception in ESP-IDF function spi_timing_config_set_psram_clock for an ESP32-S3 in following instruction: ee.stf.64.xp f2, f0, a2, a0 It seems to be an extended instruction which is not documented in "Xtensa Instruction Set Architecture (ISA) Reference Manual". Where...