Does anyone know how I can write to the COM port on the 8051? I know how to do so in Visual C++ but I'm not sure if its the same way. In Visual C++, I would use the following code: HANDLE hSerial; BOOL w_ret; DWORD write = 19; char buf[20] = {0}; hSerial = CreateFile("COM1",GENERIC_READ | GENERIC_WRITE,0,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0); COMMTIMEOUTS cto = {MAXDWORD, 0, 0, 0, 0 }; w_ret = WriteFile(hSerial,buf,write,&write,NULL); Thanks!
"Does anyone know how I can write to the COM port on the 8051?" An 8051 does not have a "COM Port" - that is an IBM-PC term. On an 8051, you have to deal directly with the UART - that's the hardware that does asynchronous serial comms (which is what a "COM Port" does on a PC). In fact, almost everything on an 8051 will require you to deal directly with the hardware - you do not have a massive Operating System, Object Frameworks, Foundation Classes, etc, etc... Just the good ol' ANSI 'C' standard library. (well, most of it). Look at the "Hello, World" sample Project - it writes "Hello, World" to the 8051 serial port. The uVision Getting Started guide takes you through the project step-by-step.
Thanks....where can I find that sample?
"Thanks....where can I find that sample?" If you need to ask, then you need to start with the uVision Getting Started guide - it'll be in the uVision 'Books' tab, or see the 'Help' menu.
In The sample folder where you installed Keil. 1 - the 8052 and windows programming are different. None of the windows APIs will work. In general Windows APIs are unique to windows. 2 - C and C++ are not the same languge 3 - the 8052 has very limit RAM and ROM Take care or run out.