Custom HTML file size limit

Blimpyway commented 5 years ago

Hi,

I'm currently using 1Mbyte flash ESP-01 with a custom html page with javascript which talks further to serial port. (using the same calls as esp-link uC console uses to retrieve and send serial data)

This custom file space size is limited 8kbytes, what should I attempt for more space available?

I know e.g. 4Mbyte ESP-12 has a lot more file space (3MBytes I think) but I am constrained by a PCB with the ESP-01 4x2 pin socket format.

I can afford to:

not use MQTT, REST, logging, mDNS acilities (compiling with some of these disabled will automatically increase file space?)
not use OTA for ESP-Link updates. The version I use (3.0.14) is quite fine for my needs, any expected updates will be just in the custom HTML (via esp-link file upload) or in the connected arduino. I know ESP basically splits available flash space in two, so actual available space for flash and uploadable files is only 512kbytes, the other 512kbytes are (uselessly for me) reserved for OTA reflashing.

What do you recommend?

Thanks, Cezar

uzi18 commented 5 years ago

You can also change flash chip on esp module to 32Mbit

uzi18 commented 5 years ago

I think it is also possible to. integrate some html files in to firmware.

Blimpyway commented 5 years ago

Thanks, I'll try a software solution, since once the flash binary is compiled it should work on all ESP-01/01S/01M .. I wanted to avoid installing esp tools, dig into sources and re-compiling but I guess I need to do that anyway. I'll keep you updated if I succeed.

Blimpyway commented 5 years ago

@uzi18 - I need the ability to update a user page.html not just a larger one.

Blimpyway commented 5 years ago

Ok, I had to install the docker image and compile sources. I managed a workaround by editing esp-link/config.c source, specifically in function getUserPageSectionStart() where user flash area start address could be lowered, because FIRMWARE_SIZE is set in Makefile by ESP_FLASH_MAX as 503808 bytes. Having the actual compiled user1.bin of 344kbytes, I expect no problem to allocate user space immediately after the space occupied by user1.bin.

Regards, and thanks for this great tool.

uzi18 commented 5 years ago

it is ok if you not use user2.bin

jeelabs / esp-link

Custom HTML file size limit #415