A detailed overview of setting up a development environment for 51 microcontroller under Linux and writing a detailed program

There is no easy-to-use IDE like keli under Linux to develop the 51 microcontroller. The development environment can only be built by yourself.

Step 1: Install cross-compilation tools

a) Install SDCC

sudo apt-get install sdcc

b) Test whether SDCC is available. This is a simple running water lamp code test.c found online, used for testing.

#include "8051.h"

#define uint unsigned int

#define uchar unsigned char

uchar tab[8] = {0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};

void Delay(uint xms)

{

uint i,j;

for(i=xms;i>0;i--)

for(j=110;j>0;j--);

}

void main()

{

uchar i;

while(1)

{

for(i=0;i<8;i++)

{

P1 = tab[i];

Delay(100);

}

}

}12345678910111213141516171819202122232425

Compile it: sdcc test.c

This many files will be generated:

test.lk test.map test.rel test.sym test.asm test.ihx test.lst test.mem test.rst

We only need test.ihx among them

packihx file.ihx >file.hex Convert to hex file

Then download the hex2bin file at the URL (http://sourceforge.net/projects/hex2bin/files/latest/download). Command: hex2bin sourcefile.hex. The sourcefile.bin file will then be generated.

hextobin file.hex generates bin file

Note: In order to facilitate calling hex2bin in the future, you can add the path to the .bashrc file

Add the folder location of Hex2bin to the last line of ~/.bashrc

PATH=$PATH:/home/leo/workspace/c51/Hex2bin-2.31

You can write a makefile to make compilation easier

This is the makefile I wrote:

test.hex : test.c

sdcctest.c

packihx test.ihx > test.hex

hex2bin test.hex

clean:

rm -rf *.asm *.lst *.mem *.rst *.lnk *.rel *.sym *.ihx *.hex *.map

~ 1234567

Step 2: Install the programming tool

a) Download stcflash: github.com/laborer/stcflash, which is a software written in python to program bin files to microcontrollers.

b) Installation environment: sudo apt-get install python-serial

c) Flashing: sudo python ./stcflash.py test.bin