Because I had some time, I started to develop 51 MCU. I found that I couldn't compile 51 MCU programs on Linux (Debian and Ubuntu), so I had to download Keil from the Internet. Then I used wine to emulate it. But it kept crashing. There were also problems with the code. Then I changed to running it in a virtual machine. But it was still not satisfactory! I didn't know what convenience was until I found SDCC. Some syntax in Keil needs to be corrected in SDCC.
Keywords：EasyPro51
Reference address：Modify the source code of EasyPro51 programmer on SDCC, compile and run successfully
For example, to light up the LED at port P0.1, write
sbit LED=P0^1;
void XXXX(void)
{
LED=1;
LED=0;
while (1){}
}
But it doesn't work in sdcc. I checked online and found this method:
__sbit __at 0x80 LED;
//或者#define LED P0_1
void XXXX(void)
{
LED=1;
LED=0;
while (1){}
}
This is the right way.
There are also some details in sdcc, such as
unsigned char Data;
while (!ReadData()==Data){}
This is wrong. Because in sdcc, you did not define Data as signed char. So it will report an error saying that this is not a signed bit.
The writing method in sdcc is: (ReadData!=Data).
OK. The E51PRO source code after modification, compilation and flashing is here: EP5-SDCC-src.tar.bz2
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