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And that terminal was used to log into the computer system, to edit text, start batch jobs and so on. The program then writes back and the messages are shown on a display:īasically, the VT terminals were a keyboard attached to a microprocessor inside a screen, and the microprocessor was connected to the mainframe using a RS-232 (or similar) cable. TerminalĪ computer terminal allows me to communicate with a program: I type commands on a keyboard which then are sent to my program. Verify that you can generate Processor Expert code, can compile and link, and download/debug the application on the board. Make sure you select the correct processor and that you have Processor Expert option enabled for the project. The first step is to create a project for your board. Using printf() very bad practice for embedded applications and only causes problems. They are bad, bad, bad, bad and should be banned from any serious application. I’m explicitly *NOT* using printf() or scanf(). Screenshots are with CodeWarrior for MCU10.5, but apply to any other tool chain with Processor Expert. In my screenshots I’m using the FRDM-KE02Z board, but any other board can be used. Because with the above things know I can have a ‘hello world’ on a complete new board in less than 5 minutes (from creating the project until the ‘hello world’ shows up on the screen). I’m using Processor Expert because this makes it really (really!) simple. CodeWarrior, IAR, Keil, ThunderBench, …), and that you know the basics of Processor Expert and the tool chain you are using ?
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How to use eclipse scanner input serial#
The next thing I usually add to my application is to have it to communicate with the host over a serial (RS-232/USB CDC) connection: I can write a ‘hello world’ and read in text. If I have a new board, then usually one of the first things I try is to blink an LED: it is simple, only requires toggling a pin and is a visual proof that my program is running :-).