What this line means?

Hi,
In Keil uvision the following line indicated for program size.
would someone explain it?
Program Size: Code=3984 RO-data=476 RW-data=68 ZI-data=2548
Thanks in advance.

dariush_abbasi said:

In Keil uvision the following line indicated for program size.
would someone explain it?
Program Size: Code=3984 RO-data=476 RW-data=68 ZI-data=2548

Click to expand...

After compiling and linking the number of bytes stored in various sections of storage of the device:

Code=3984 -- Indicates the size of code stored in the Code Section of storage, usually Flash Memory is 3984 bytes.

RO-data=476 -- Indicates the size of Read Only Data, constants, literals, string literals, etc, stored in the Read Only Data Section of storage, usually Flash Memory is 476.

RW-data=68 -- Indicates the size of Read/Write Data, initialized variables, etc, stored in the Read/Write Data Section of storage, usually RAM Memory is 68.

ZI-data=2548 -- Indicates the size of Uninitialized Data, uninitialized variables, dynamic allocation, etc, stored in the Zero Initialized Data Section of storage, usually RAM Memory is 2548.

What device is this program being compiled, 8051 variant, ARM, etc?

Hope the info helps,

BigDog

---------- Post added at 23:29 ---------- Previous post was at 23:20 ----------

I just found a discussion concerning the meaning of the compiler message:

Program Size: Code=3984 RO-data=476 RW-data=68 ZI-data=2548

Click to expand...

I thought it might give you more insight in to the exact meaning of the above message:

RAM and ROM in KEIL

BigDog

Thanks a lot for your reply.
My chip is ARM , the STM32F103 ,with 128 Kbytes of Flash memory and 20 Kbytes of SRAM.
From this line,then,how can i know the amount of Flash and SRAM which are used?

dariush_abbasi said:

My chip is ARM , the STM32F103 ,with 128 Kbytes of Flash memory and 20 Kbytes of SRAM.
From this line,then,how can i know the amount of Flash and SRAM which are used?

Click to expand...

Flash used: Code + RO-data = 3984 + 476 = 4460 bytes of Flash used.

SRAM used: RW-data + ZI-data = 68 + 2548 = 2616 bytes of SRAM used.

BigDog

Thanks again.
Very informative.:grin: