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modbus_serial_receive not defined

 
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kdoney
Guest
modbus_serial_receive not defined
PostPosted: Tue Sep 29, 2009 1:45 pm     Reply with quote
Beginning of code strictly generated from wizard (except as noted):
Code:

#define SLAVE_PC stdout
#define MODBUS_BUS SERIAL
#define MODBUS_TYPE MODBUS_TYPE_SLAVE <-- originally gen'd SLAVE (error)
#define MODBUS_SERIAL_USE_EXT_INT TRUE
#define MODBUS_SERIAL_BAUD 9600
#define MODBUS_OUR_ADDRESS 1
#include "modbus.c"


void main()
{   modbus_init();
   fprintf(SLAVE_PC, "\n\rReady...");

   while(TRUE)
   {
      while(!modbus_serial_receive(FALSE)); <-- this is the function call not defined
...

All of this relates to modbus.c located in the drivers directory. I tried to define it extern modbus_serial_receive(byte) but that caused more problems with "different from previous definition" on
Code:
#byte TXSTA=getenv("sfr:TXSTA").

Any ideas?
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Tue Sep 29, 2009 2:06 pm     Reply with quote
Was that line put in by the CCS Wizard ?

It appears that modbus_serial_receive() is a function used in an older
version of the CCS modbus.c driver file. See this link:
http://www.infohit.si/Download/Public/PIC/PICC/Drivers/modbus.c

It appears that in the current version of the compiler (4.xxx), CCS has
re-named and re-written that function. Its new name is modbus_kbhit().
Look in the modbus.c file to see it.
Kevin Doney
Guest
Modbus problem
PostPosted: Tue Sep 29, 2009 2:27 pm     Reply with quote
Thank you for the fast response. Yes all of the code you saw came from the wizard. I had made some minor corrections first but this one I couldn't solve. I have 4.099 of all of the tools.
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Tue Sep 29, 2009 2:42 pm     Reply with quote
You should send an email to CCS support about this Wizard issue.
Tell that that it's in vs. 4.099.
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