ESP8266 HTTP download a big file (i need help)

[richard_zhang]

when i developed the esp8266 to download a big file(>5KB)used http ，it will be fail .i watch my code which i download from net,it define a buff:#define buff_size_max 5000. This is the reason , when i download a big file will fail.The core's sram available is 40KB,So Only define bigger buff is not a good method.
My question:1.how to solve this problem
2.i need the sample code that download a big file
Thanks, i am waiting your reply

[pratik]

I'm not sure I understand your question.
Which firmware/environment are you using? RTOS SDK, nonOS SDK or AT firmware?

The internal RAM is low on ESP8266, just like any other embedded platform. So if you download a rather large file, you will need to store it somewhere unless you just need one portion of the file at a time. Typically you can download and store 20kB files in RAM easily in nonOS SDK.

[richard_zhang]

I'm not sure I understand your question.
Which firmware/environment are you using? RTOS SDK, nonOS SDK or AT firmware?

The internal RAM is low on ESP8266, just like any other embedded platform. So if you download a rather large file, you will need to store it somewhere unless you just need one portion of the file at a time. Typically you can download and store 20kB files in RAM easily in nonOS SDK.

Thanks for your reply.
The firmware i used is nonOS SDK ,my esp8266 communicate with my another MCU by UART，So i want to download a file(music file),then print by uart.Another MCU will get this file.
I do not know the way that how to download file and print by uart.