Hi David,
I think we can start creating the missing functions, like
eMBMasterASCIIStart(), I think we could use eMBMasterRTUStart() as
reference.
Probably we will need to modify some timing values, since ASCII delays more
time to transmit data.
Best Regards,
Alan
On Tue, Apr 30, 2024 at 12:36
Ok,
I have the device setup. I can help test whenever needed.
David
On Wed, Apr 24, 2024 at 7:17 AM Alan C. Assis wrote:
> Hi David,
>
> I'm glad to help!
>
> More people could want this feature, so it is important to fix.
>
> Best Regards,
>
> Alan
>
> On Tuesday, April 23, 2024, David Welshon
Hi David,
I'm glad to help!
More people could want this feature, so it is important to fix.
Best Regards,
Alan
On Tuesday, April 23, 2024, David Welshon wrote:
> Thank you btw!
>
> On Tue, Apr 23, 2024 at 9:22 PM David Welshon
> wrote:
>
> > I can help test. I'll have to get a device tomor
Thank you btw!
On Tue, Apr 23, 2024 at 9:22 PM David Welshon
wrote:
> I can help test. I'll have to get a device tomorrow from work first. I'll
> let you know when I have it setup.
>
> On Tue, Apr 23, 2024 at 8:09 PM Alan C. Assis wrote:
>
>> David,
>>
>> I fixed the header, but it seems someo
I can help test. I'll have to get a device tomorrow from work first. I'll
let you know when I have it setup.
On Tue, Apr 23, 2024 at 8:09 PM Alan C. Assis wrote:
> David,
>
> I fixed the header, but it seems someone did a partial port of FreeModbus,
> it is missing many functions for modbus ASC
David,
I fixed the header, but it seems someone did a partial port of FreeModbus,
it is missing many functions for modbus ASCII:
mb_m.c: In function 'eMBMasterInit':
mb_m.c:176:33: error: 'eMBMasterASCIIStart' undeclared (first use in this
function); did you mean 'eMBMasterTCPInit'?
176 |
now it can't find the header file it seems
make[2]: Entering directory '/home/david/nuttxspace/apps/modbus'
CC: mb_m.c
arm-none-eabi-gcc -c -Wstrict-prototypes -Wno-attributes
-Wno-unknown-pragmas -Wno-psabi -Os -fno-strict-aliasing
-fomit-frame-pointer -fno-common -Wall -Wshadow -Wundef -ffunct
Whoa, you are totally right!
Currently it is this way:
ifeq ($(CONFIG_MODBUS_SLAVE),y)
CSRCS += mb.c
endif
ifeq ($(CONFIG_MB_RTU_MASTER),y)
CSRCS += mb_m.c
endif
But I think it should be:
ifeq ($(CONFIG_MODBUS),y)
ifeq ($(CONFIG_MODBUS_SLAVE),y)
CSRCS += mb.c
endif
HI Alan.
The problem is my hardware is using the ASCII protocol. When I disabled
ASCII and enabled RTU it compiled. What I would like is ASCII protocol.
It seems like mb_m.c is for modbus master and something like the following
should be in the makefile in the modbus folder but I could be wrong.
Hi David,
Actually ASCII and RTU enable equivalent/symetric functions.
If you search for CONFIG_MB_ASCII_MASTER inside apps/modbus/ you will see
it just calls the ASCII related functions.
The config for RTU will call the binary (RTU) related functions.
Try to disable ASCII master and enable RTU
When I changed from Modbus ASCII master selected to MOdbus RTU master it
compiled.
Is there extra configuration required for ASCII?
On Tue, Apr 23, 2024 at 1:38 PM Alan C. Assis wrote:
> I just verified the apps/modbus/Makefile and noticed that mb.c is only
> compiled when CONFIG_MODBUS_SLAVE is
I just verified the apps/modbus/Makefile and noticed that mb.c is only
compiled when CONFIG_MODBUS_SLAVE is selected.
It means you are enabling the modbus slave or the modbus example (that
assume to be slave).
So, don't enable CONFIG_EXAMPLES_MODBUS, only EXAMPLES_MODBUSMASTER
Maybe we need to r
Thanks for the help and great videos and articles Alan!
I just went through the video tutorial again. Unfortunately, modifying my
own config as well as the nucleo-f4x1re:f401-nsh configurations per the
video still can't find the functions
On Tue, Apr 23, 2024 at 12:45 PM Alan C. Assis wrote:
>
Hi David,
These functions are there (see apps/modbus/mb.c for instance).
Did you follow this video tutorial:
https://www.youtube.com/watch?v=FmJLrG4Ldow
Best Regards,
Alan
On Tue, Apr 23, 2024 at 12:41 PM David Welshon
wrote:
> I am trying to get modbus mastermode rs485 example working on
>
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