On Wed, 14 Mar 2018, andy pugh wrote:
Date: Wed, 14 Mar 2018 16:43:39 +0000
From: andy pugh <[email protected]>
Reply-To: EMC developers <[email protected]>
To: EMC developers <[email protected]>
Subject: Re: [Emc-developers] writing new firmware to read yaskawa absolute
encoder
On 14 March 2018 at 04:38, Th??ng L?? <[email protected]> wrote:
unfortunately, channel A use serial interface with ASCII 7bits, i guess i
cant use mesa_uart without modify uart.c. Does pktuart allow me to change
frames? I was looking at hm2_pktuart_setup function, there is an option
"Bit 20..16 Frames received", is this what i need?
As far as I can tell from the regmap file the Mesa UART is fixed at 8 bits.
I can't even find pktUART in the regmap to find out if that is different.
Looking at the VHDL files both UART and pktUART have a 4-bit field for
bit-count, so that rather suggests that there should be a way to set
the number of bits to a value other than 7.
--
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
Typically there would be no issue sending and receiving 7 bit characters with
the PacketUART (just mask bit 7 on RX and set it to the line idle (high) state
on TX )
Peter Wallace
Mesa Electronics
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