WiFive, your answers are not really helpful. You gave me the link to the linker file "esp32.ld" where you also marked the two lines where the changes should take place. I changed the lines accordingly and recompiled the project, but no change in IRAM size happens. So I ask again: what is the right w...

Yes, I know. So back to my question: I changed the line 31 to an incremented size ("len"). Now I recompiled the whole project - but nothing was changed in IRAM size. Do I have to compile the esp32.ld first? (But this should be linker file) Or is it the wrong file and I have to change the IRAM somwhe...

Hi Wifive, do I understand it right, that I can change the "len" in line 31, lets say to 0x40000? Is this new memory area (with the greater range of 0x40000) from 0x40080000 to 0x400C0000 free, or is mapped to something else? What is the max. size for this? Second, where is the "CONFIG_TRACEMEM_RESE...

Thanks for your response.

How / where can I change it?
I haven't done it before.

Regards
Jorg

Ok, I understand.

But can I change the size of INSTR_RAM / DATA_RAM?
(I mean, my program needs more INSTR_RAM.)
Where is the configuration for this?

Best regards
Jorg

Any ideas?

Regards
Jorg

Hi, how can I increase/change the size of INSTR_RAM and/or DATA_RAM? I'm using VisualGDB and at the end of the compiling run I get the following summary: ------------------- Memory utilization report ------------------- Used DATA_FLASH: 257KB out of 8192KB (3%) [+80] Used INSTR_FLASH: 1002KB out of ...

Hello ESP_igrr, I didn't have time to see the signals with an oscilloscope. But are the recommended 10k-pullups sufficient? In other forums I read about 100k-pullups (also in SD-Card forum). I know, that when one use higher pullups then the edges in the signals look like more an "edge" than a "curve...

Hi ESP_igrr,
thank you for your reply.
I used the recomended pullups GPIO14, GPIO15, GPIO2, GPIO4, GPIO12, GPIO13, each 10k.

I will see with an oscilloscope how the signals are.
Is it only the CLK (GPIO14)-line, where I have to pay attention for?

Regards
Jorg

Hi, when I try to use SD-Card in MMC-mode it is working only, when I use 1-line SD-mode. When I use 4-lines, it failes. //#define SDCARD_USE_SPI 1 void xSdCardInit() { #ifdef SDCARD_USE_SPI ESP_LOGI(TAG, "Using SPI peripheral"); sdmmc_host_t host = SDSPI_HOST_DEFAULT(); sdspi_slot_config_t slot_conf...