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???
06/19/09 06:36
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 		 #166239 - You have to do it yourself
Responding to: ???'s previous message
The standard 8051 UART has no facility for any form of automatic flow control - neither hardware nor software.

Therefore, if you want XON/XOFF ("software") flow control, you are going to have to write the code to do it - unless your particular variant has some special feature, in which case you'll have to study its datasheet.

I think Keil's interrupt-driven serial IO example (on their downloads page) also illustrates XON/XOFF...

List of 44 messages in thread
TopicAuthorDate
CMP-10 thermal printer & 8051            01/01/70 00:00      
   Printer settings            01/01/70 00:00      
   Some hints/advice..            01/01/70 00:00      
   I sent commands like "BEL", or "ESC RS"            01/01/70 00:00      
      ASCII table            01/01/70 00:00      
      HyperTerminal & ASCII code            01/01/70 00:00      
         Would it be realistic....            01/01/70 00:00      
         Not text,            01/01/70 00:00      
            Not text,            01/01/70 00:00      
               Spend more time with the ASCII table.            01/01/70 00:00      
                  Still fail to test the printer            01/01/70 00:00      
                     The printer is working            01/01/70 00:00      
                     ASCII char on HyperTerminal            01/01/70 00:00      
                        Re: ASCII char on HyperTerminal            01/01/70 00:00      
                     ASCII char on HyperTerminal            01/01/70 00:00      
                        Is that guaranteed?            01/01/70 00:00      
                           I use it that way            01/01/70 00:00      
   XOn/XOff set on MCU side            01/01/70 00:00      
      You have to do it yourself            01/01/70 00:00      
         Re:You have to do it yourself            01/01/70 00:00      
            Intern? [edited]            01/01/70 00:00      
   HyperTerminal and microcontroller - please help!            01/01/70 00:00      
      HyperTerminal and microcontroller - please help!            01/01/70 00:00      
         May be I need to use cross over serial cable            01/01/70 00:00      
   Use printf to output to UART, but receive incorrect data            01/01/70 00:00      
      Re: Use printf to output to UART, but receive incorrect dat            01/01/70 00:00      
         printf only can output value from 256 to 32767 correctly            01/01/70 00:00      
            Hasn't Maarten already explained this?            01/01/70 00:00      
               Re: Hasn't Maarten already explained this?            01/01/70 00:00      
                  Show it!            01/01/70 00:00      
                     Re: Show it            01/01/70 00:00      
      use a cast            01/01/70 00:00      
         or RTFM            01/01/70 00:00      
            Re: RTFM            01/01/70 00:00      
            I found the solution. Thanks            01/01/70 00:00      
               Direct Memory?            01/01/70 00:00      
                  Re: Direct memory            01/01/70 00:00      
                     Definitely a BAD Idea!            01/01/70 00:00      
                        Re:Definitely a BAD Idea!            01/01/70 00:00      
                           Could you please suggest?            01/01/70 00:00      
                              Re: Do not call from ISR            01/01/70 00:00      
                                 I didn't say that            01/01/70 00:00      
                                    Thanks!            01/01/70 00:00      
         Re: use a cast            01/01/70 00:00      

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