[aprssig] GPS GT-320FW(AS)

Andrew Rich vk4tec at tech-software.net
Tue Apr 23 02:10:53 CDT 2013


Pic micro USART 

16f628 

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Andrew Rich

On 23/04/2013, at 5:08 PM, Greg D <ko6th.greg at gmail.com> wrote:

> Not to be picky, but USART or UART?  
> 
> If I recall my 1970's hardware stuff, the "S" is important.  UARTs synchronize themselves with start and stop bits, each character asynchronously triggered by the start bit.  USARTs are not so lucky, and depend on other characteristics of the data stream to sync up (flags), and put characters back-to-back.  No start or stop bits for them.
> 
> Is USART a typo?
> 
> Greg  KO6TH
> 
> 
> Tom Hayward wrote:
>> 
>> On Apr 21, 2013 5:23 AM, "Andrew Rich" <vk4tec at tech-software.net> wrote:
>> >
>> > I was looking at Scott's GPS GPS GT-320FW - Would that be USART compatible ?
>> 
>> There's lots of noise in this thread, but I don't see that anyone specifically answered the question...
>> 
>> Yes, it's UART compatible. I'm using one successfully with 3.15V TTL, active high.
>> 
>> It's very convenient that it also supports RS232.
>> 
>> Tom KD7LXL
>> 
>> 
>> 
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