Discussion in "Project Help" started by    DrNossberg    Sep 11, 2018.
Tue Sep 11 2018, 08:08 PM
Hello everybody!

First of all let me explain some stuff about me: i'm a second-year programming student in a 42-like school for those who know. So, this mean i'm pretty cumfortable with the C language (but still has many things to learn! )

I've recently bought a card from SPE , equipped with a buttos and a littel display screen able to display digits/words. The microproc is a STC15W4K32S4 type SOP28 (here is the datasheet: http://www.stcmicro.com/datasheet/STC15W4K32S4-en.pdf the pin configuration is on page 17)

I've fount how to interacte with buttons here : http://www.8051projects.net/forum-t4476-post.html and will work aroud, but didn't fount anything about the screen.

Moreover, i will follow those tutorial: https://www.intorobotics.com/8051-microcontroller-programming-tutorials-simulators-compilers-and-programmers/ enven if that's a lot of things to read.

My issue: i don't have the card for now, so i can't actually work on it, but throught my reaserch on the web, i've hear that Keil UVision could simulate the card.
In fact, this is my problem. The provider gave me a software called STC-ISP, but this soft is actually really hard to understand. And on top, I donnot what soft of Keil i should download (http://www2.keil.com/mdk5/legacy/ what's that??) and where to find it, or even if I could use an other soft because it look like I need to be part of a compagny to download their soft (C51).

Thanks in advance, any response, whatever it is will be apreciated!

Best Regards,
Wed Sep 12 2018, 12:12 AM
There are several issues here.
The original 8051 was a very simple item.
One serial port and very little memory.
Even so you could do a lot with it and it became very popular.

The STC15W4K32S4 is an 8051 with lots of extras.
Many companies made similar chips with add-ons.

The problem is that while the core 8051 is the same, the add-ons
are all different.

Embedded is all about knowing what register to set
and where those registers are.

The Keil C51 compiler knows about the 8051 and simple variants
but not one as complex as the STC15W4K32S4.

To use Keil, or any,compiler you need to get header files and extra
information from the chip maker about the STC15W4K32S4 registers.

Finding examples on line is the best way to get it working.
This is a very complex chip, it may be some time before you can
master all its functions.

To start with, concentrate on using the basic 8051 features
to read the keypad and print messages.

You can download a free copy of the C51 compiler here.

Company detail aren't checked.
This free version is limited to 2Kilobytes of code,
but that is plenty for now.

Development boards are all different.
Only the board makers know what the display is and how it
is connected to the micro.
I would expect them to supply example code to get you started.

"STC-ISP" sound more like software just to store code on the chip.
Can you give more details of "STC-ISP" and the development board ?

[ Edited Wed Sep 12 2018, 12:24 AM ]
Thu Sep 13 2018, 03:49 PM
Hi, thanks you for your reply ^^

First of all, by reading your reply, I abandoned my project. What I've imagine (and I realize it now), is wayyy to complexe at my level for know.

That said, the header your talking about as describe in the file I''ve provided as link in my post, as the description/screenshot of the STC-IPC software.
Thank's for the Keil's link, this will help me in the future.

For know, i'll learn assembly code, I think I reach the point in development I had to precisely know what i'm doing. That's the result of my last two week's research ^^

Again, thank you very much and best regards,


[ Edited Thu Sep 13 2018, 03:49 PM ]
Thu Sep 13 2018, 08:39 PM

First of all, by reading your reply, I abandoned my project. What I've imagine
(and I realize it now), is wayyy to complexe at my level for know.


I think you are wise to start slowly.

At the heart of the The STC15W4K32S4 is an 8051.
If you stick to programming for the 8051 core you should be able to use your new board.
Later you can start using extra features.

The 8051 only has 128 bytes of memory, common variants had 256 bytes.(eg AT89C52)
You can use code for these variants as well.

Knowing assembly language helps you understand the system,but it is little practical use.
Don't spend too much time learning it, working in 'c' is easier.

[ Edited Thu Sep 13 2018, 08:57 PM ]

Get Social


Powered by e107 Forum System


Thu Jun 11 2020, 06:27 AM
sir could please send the code for I2C and wifi interfacing with 8051
Tue May 19 2020, 10:29 PM
Does anyone have microcontroller programming software for STC15F104W (core 8051, 4 k, 128 byte, 6 I/O pin, UART ... DIL8), that works?
Sat May 02 2020, 07:38 PM
Tamu Gurung
Hi I am looking for a assembly language program for a digital decimal counter. Time counts max limit of 2 mins starting from 2.00 mins and ending at 0.00. time is to be displayed on 4 7-segment LED displays. Edsim51 simulator to be used. Thanks
Wed Mar 25 2020, 01:39 PM
Sir kindly send the code file i2c for 8051
Fri Mar 13 2020, 10:36 PM
@ Rohitnani,ABEBE..which project ?
Fri Mar 13 2020, 12:55 PM
how can get hadwere of this project
Sat Mar 07 2020, 05:11 PM
Sir, Could you please send me the zip file input password....
Wed Feb 26 2020, 04:58 PM
Peter Parker
Is it possible to send multiple messages using only 1 GSM module?
Sat Feb 01 2020, 10:12 AM
Pearl Olin
Wed Jan 22 2020, 06:16 PM
I m getting errors while simulation process during interfacing socket output and lcd... Can i get the report of ur project which is same as us.



Thu Jun 25 2020, 03:46 PM
Mon Jun 22 2020, 03:03 PM
Tue Jun 16 2020, 05:10 PM
Sat Jun 13 2020, 09:43 PM
Thu May 21 2020, 12:44 PM
Thu May 21 2020, 01:28 AM
Wed May 20 2020, 07:05 PM
Wed May 20 2020, 11:52 AM


Guests: 147, Members: 0 ...

most ever online: 182184
(Members: , Guests: 182184) on 06 Aug 2010: 05:37 AM

Members: 38215
Newest member: Mirza123