Am 22.04.23 um 01:12 schrieb andy pugh:
On Fri, 21 Apr 2023 at 13:56, Hans Unzner wrote:
What exactly do you mean with "inited from the device" resp. how should
that happen?
If the flag is set, it would read the current state of the registers and
set the HAL pin states accordingly.
This
On Fri, 21 Apr 2023 at 13:56, Hans Unzner wrote:
What exactly do you mean with "inited from the device" resp. how should
> that happen?
>
If the flag is set, it would read the current state of the registers and
set the HAL pin states accordingly.
This does depend on there being a matching read
Am 21.04.23 um 12:16 schrieb Andy Pugh:
On 21 Apr 2023, at 07:02, Hans Unzner wrote:
Because, e.g., setting a bit in a holding register you need to read that
register, set that bit and write the value back.
I am wondering about including a flag that indicates that the HAL pins should
> On 21 Apr 2023, at 07:02, Hans Unzner wrote:
>
> Because, e.g., setting a bit in a holding register you need to read that
> register, set that bit and write the value back.
I am wondering about including a flag that indicates that the HAL pins should
be inited from the device, but in
Yes, those bitmasks are a common "problem", I am not sure if that should
be part of the generic Modbus driver.
I think it should be on a higher level. So an application that uses your
mesa modbus driver. Because, e.g., setting a bit in a holding register
you need to read that register, set that
On Thu, 20 Apr 2023 at 20:05, Hans Unzner wrote:
- The created HAL pins are inputs for some modbus commands and outputs
> for some others. Maybe that could be mentioned.
>
I also need to add some more flexibility, as the VFD I am playing with
expects a command 6 (register write) with 1 for
Hi Andy,
this is really a great addition - I already often thought that a modbus
driver for the mesa cards is somehow missing. Thanks for that!
The docs are quite comprehensive, so no real need to add something.
However, some annotations:
- The created HAL pins are inputs for some modbus
I have just pushed a feature branch (andypugh/mesa_modbus) to the LinuxCNC
github.
It uses the Mesa FPGA UARTs (specifically pktUART) to offer real-time
modbus connection directly to a Mesa card.
Docs are here:
