abstract.txt

来自「ADuC7020/26是ADI模拟公司开发的ARM7TDMI内核」· 文本 代码 · 共 45 行

The UART project is a simple program for the ADuC7026
using Analog Devices ADuC7026 Evaluation Board.

It demonstrates UART transmission using the board. 



Note:
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Examples UART1-3 all have a clock divider of 0 (i.e. the clock speed is unchanged).
Example UART4 however has a CD value of 3. As each of these examples use the same startup 
file, it is necessary to change the CD value when switching between examples. This can be 
done as follows:
	* In the Project Workspace window, double click the file 'startup.s' to open the startup 
	  file.
	* Click the + box to extend the PLL menu.
	* Change the CD value to 0 (for UART1-3 or 3 for UART4)



The default example is UART1. There are a total of four examples 
included with this project (i.e UART1, UART2, UART3, UART4). 
To view these examples, the 'UART1.c' C source file needs to be 
replaced with the appropriate C source file. 

Instructions to do this are as follows:

* In the Project Workspace window, right click on the 'UART1.c'
  file in the 'C Source File' folder. 

* Select ' Remove 'UART1.c' '.

* Right click on the 'C Source File' folder and select 'Add 
  files to Group 'C Source File' '.

* Choose the required file from the UART folder ('UART1.c', 
  'UART2.c', 'UART3.c' or 'UART4.c').

* Compile and run as normal.