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Recent Forum Posts

No emails since December

It seems that since early November I do not receive any email notifications about new posts of the threads that I am subscribed.

Any one else having the same problem?

Before posting this, I...
Ioannis Today, 09:07

Re: USB to send ASCII characters to PC

Yes, the focus is a thing that bothers me and I wish I knew a way to deal with it.

If for any reason (and windows has a lot, I am sure) the focus is lost, data entry is lost too...
Ioannis Today, 00:18

Re: HSERIN using EUSART RX interrupt - how does it really work?

Thanks Henrik, thanks Richard.

I have some homework to do following your info :)
flotulopex Yesterday, 21:11

Re: HSERIN using EUSART RX interrupt - how does it really work?

probably not , on interrupt is not suitable for processing async data streams in any useful way without flow control
if there is a "real" foreground task being processed incurring data loss is...
richard Yesterday, 12:04

Re: HSERIN using EUSART RX interrupt - how does it really work?

First, there's the actual shiftregister into which the data is shifted bit-by-bit as it's received. You don't have access to this register (AFAIK).
Once the correct number of bits have been shifted...
HenrikOlsson Yesterday, 12:01

HSERIN using EUSART RX interrupt - how does it really work?

Thank you Richard,

Actually, my program works on a 8MHz basis - it should be more than enough to handle 9600bps serial data, no?

I'd like to stick to the very basics since I'm not an...
flotulopex Yesterday, 11:22

Re: USB to send ASCII characters to PC

As you will be creating another keyboard, any output will be sent to what ever window has focus.
towlerg Yesterday, 09:41

Re: HSERIN using EUSART RX interrupt - how does it really work?

since most chips have a rxbuffer you could also take advantage of

ISR:
rx_hit=1
while pir1.5
sdata[rx_count]=RCREG
rx_count=rx_count+1
if rx_count==5...
richard - 23rd January 2021, 22:34

Re: HSERIN using EUSART RX interrupt - how does it really work?

i have great reservation that "on interrupt" will be successful @9600 with a 4mhz osc, use dt ints

puts your 690 in a blocking loop until 5 characters have been received, no matter how long it...
richard - 23rd January 2021, 22:26

HSERIN using EUSART RX interrupt - how does it really work?

Hi all,

I've made this small program to learn how the EUSART RX interrupt works....and it works BUT :biggrin:

Yes, the code below works but I'm getting confused when I think about having...
flotulopex - 23rd January 2021, 21:40

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