Available RAM and Flash

Posted on Wed 24th, September 2014

• #1

tobor

Is there a way to see how much RAM is available? I am running an STM32F407.
• #2

JumJum

Take a look to this:
http://www.espruino.com/Reference#l_process_memory
• #3

tobor

I tried and get

process.memory()
={"free":5434,"usage":16,"total":5450,"history":0,"stackEndAddress":536981840,"}
I have 5450 bytes of RAM available of 192k?
• #4

Gordon

There's a bit of information about this on the website (for instance http://www.espruino.com/Performance), but basically you have 5450 * 16 bytes = 87200 bytes available.
• #5

tobor

thanks, on the espruino board with 48k, what is the expected available?
• #6

Gordon

2250 * 16 = 36000 bytes

Basically you could squeeze a lot more out of the STM32F407, but as all I get is trouble if something goes wrong I tend to stick with very safe defaults.

Anyone's free to tweak and compile their own version with increased memory limits though.

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