Program space issues

chenbingjy

Program space issues [Copy link]

 

I use STM32F103VCT6 to write programs, and the program space is 256K.

It shows that more than 180K has been used. I didn’t expect that I wrote so many programs.

Is this accurate? I still have a lot of code to write, I don't know if it will be enough.

Please give me some advice, thank you.

chunyang

The amount of compiled code depends on the program structure and data type. It is not necessarily the case that if the source code is not large, the amount of compiled code will be small, especially when there are a large number of program area constants. As for whether the capacity is sufficient, how can others know this? You can only judge it yourself.

chenbingjy

chunyang posted on 2020-9-8 17:20 The amount of compiled code is related to the program structure and the data type. It does not necessarily mean that the amount of compiled code is small if the source code is not large, especially when there are a lot of...

I can't judge it myself.

chunyang

chenbingjy posted on 2020-9-8 17:28 I can’t tell for myself

You should know how much work you have done, right? Excluding the space occupied by the program area constants, the remaining space is compared with your remaining work.

chenbingjy

chunyang posted on 2020-9-8 17:34 You should know how much work you have completed, right? Excluding the space occupied by constants in the program area, the remaining space is compared with your remaining workload.

It’s hard to calculate. This thing is hard to estimate because it contains too much water.

I'd better simplify the code.

chunyang

chenbingjy posted on 2020-9-8 17:38 It's hard to calculate. This thing is hard to estimate. There is too much water. I'd better simplify the code

It seems that you didn't write all the programs yourself. If you wrote all the programs yourself, you can't possibly not know how much work you've done. If you modify other people's programs, the premise for estimating the workload is that you must have a full understanding of the structure and functions of other people's programs.

chenbingjy

chunyang posted on 2020-9-8 17:42 It seems that not all programs are written by you. If you write them all by yourself, you can't not know how much work you have completed. Modify the program based on others, then estimate...

Great, I wrote all of them. However, I don't know how to write the rest of the part. I don't know the whole thing about the device I wrote. I just heard the introduction of the workshop workers.

chunyang

chenbingjy posted on 2020-9-8 17:56 Great Master, I wrote all of them. However, I don’t know how to write the rest of the part. I am not fully clear about the device I wrote. I just listened to the workshop...

After compilation, the code with a storage capacity of several hundred KB is a source program with tens of thousands of lines of code unless there are a lot of constants in the program area. If this is not the case, it means that you need to improve your programming efficiency.

chenbingjy

chunyang posted on 2020-9-8 18:09 After compilation, the code with hundreds of KB storage capacity is a source program with tens of thousands of lines of code unless there are a large number of program area constants. If not, it means...

It is in the tens of thousands of lines level, with multiple files, the largest of which has more than 16,000 lines

chunyang

chenbingjy posted on 2020-9-8 18:49 It is at the level of tens of thousands of lines, with multiple files, the largest of which has more than 16,000 lines

If you wrote all this code yourself, you must be a very skilled programmer...

chenbingjy

chunyang posted on 2020-9-8 19:16 If you wrote all these codes yourself, you should be a very skilled programmer...

Some of the underlying drivers were downloaded from the Internet and modified.

freebsder

More than 180K does require a lot of code.

huo_hu

Pure code rarely takes up so much storage space. Generally, the data table that is stored takes up a lot of space. The data table or code that is not accessed will be optimized. Another special case is that the storage address of the data table is specified. In this case, the largest address is used.

chenbingjy

huo_hu Published on 2020-9-10 11:26 Pure code rarely takes up so much storage space. Generally, the stored data tables take up a lot of space. The data tables or codes that are not accessed will be optimized. In addition...

What does it mean to specify the storage address of a data table?

Is it to specify the MCU FLASH address?

I did not specify, have specified the storage address of W25Q16.

huo_hu

chenbingjy posted on 2020-9-10 11:39 What does it mean to specify the storage address of the data table? Is it to specify the MCU FLASH address? I didn't specify it, but I did specify the storage address of W25Q16...

_at_ or define the section name to specify the flash address

huo_hu

You can check the list file to see the allocation

chenbingjy

huo_hu posted on 2020-9-10 11:50 You can see the allocation by checking the list file

Thanks!

huo_hu

Another possibility is the LIB library usage

damiaa

There are still quite a few. If it is really not enough, optimize it. If it is still not enough, change the chip of VDt6 VEt6. The board has 384K 512K.

You should first install the largest one, then switch to the smaller one. Buy both large and small chips.

chenbingjy

damiaa posted on 2020-9-10 15:42 There are still quite a few. If it is really not enough, optimize it. If it is still not enough, change the VDt6 VEt6 chip. The board has 384K 512K. It should be fixed first...

Makes sense