On Wed, 21 Mar 2018, Th?ng L? wrote:
Date: Wed, 21 Mar 2018 15:20:12 +0700
From: "[UTF-8] Th?ng L?" <lethang12...@gmail.com>
Reply-To: EMC developers <emc-developers@lists.sourceforge.net>
To: EMC developers <emc-developers@lists.sourceforge.net>
Subject: Re: [Emc-developers] writing new firmware to read yaskawa absolute
encoder
i'm using mesa_uart to read serial data but i have a issue. Sometimes,
after sending 8 bytes, the phase A isnt come back idle state-5V state (it
keeps 0V state). This mean uart is still getting data after first 8 bytes,then
the UART data shows me rx-bytes = 16, all rx-data = 0.
Is mesa_uart posible to limit the number bytes UART read?
No, but this is expected if the input is driven low after the data
you must only clear the UART/FIFO when the data line is idle
You can disable RX if you know when the input data will become invalid
(you would also expect to see the framing error bit set in this circumstance)
2018-03-16 23:52 GMT+07:00 Peter C. Wallace <p...@mesanet.com>:
On Fri, 16 Mar 2018, Th?ng L? wrote:
Date: Fri, 16 Mar 2018 23:43:49 +0700
From: "[UTF-8] Th?ng L?" <lethang12...@gmail.com>
Reply-To: EMC developers <emc-developers@lists.sourceforge.net>
To: EMC developers <emc-developers@lists.sourceforge.net>
Subject: Re: [Emc-developers] writing new firmware to read yaskawa
absolute
encoder
ah, i understood what you mean. thank you very much
2018-03-16 23:30 GMT+07:00 andy pugh <bodge...@gmail.com>:
On 16 March 2018 at 16:27, Th????ng L???? <lethang12...@gmail.com> wrote:
> this is a great idea but how can i right-shift the data? Both your way
and
> Peter's way seem have to touch UART source
No, you can shift the raw data in the HAL component that interprets the
data.
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
???? George Fitch, Atlanta Constitution Newspaper, 1916
Actually theres no shifting involved, only manipulating bit 7 of the
8 bit data
Peter Wallace
Mesa Electronics
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Mesa Electronics
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