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 <david.wels...@gmail.com> wrote: > I am trying to get modbus mastermode rs485 example working on > nucleo-f4x1re following the example on the youtube channel. I am getting > undefined reference errors during linking and am not sure if I need to > modify source or am missing a configuration option. The device I am > interacting with is set at a baudrate of 9600 with no parity instead of the > baudrate in the video. But other than that I believe I followed the video > closely. > > I started modifying the nsh config up to this point and have zerocross and > gpio working, but I am stuck at the moment on this rs485 bit. Appreciate > any help. > Also, I have not participated in many mailing lists, so if I am in the > wrong place or I am breakin any etiquette rules I apologize in advance and > appreciate your help finding any etiquette rules or posts to straighten me > out. > > Attached is my build output and config file and below is a small build > output snippet. > > include -D__NuttX__ -DNDEBUG -D__KERNEL__ -I > /home/david/nuttxspace/nuttx/arch/arm/src/chip -I > /home/david/nuttxspace/nuttx/arch/arm/src/common -I > /home/david/nuttxspace/nuttx/arch/arm/src/armv7-m -I > /home/david/nuttxspace/nuttx/sched > /home/david/nuttxspace/nuttx/boards/arm/stm32/nucleo-f4x1re/scripts/f401re.ld > -o > /home/david/nuttxspace/nuttx/boards/arm/stm32/nucleo-f4x1re/scripts/f401re.ld.tmp > > echo "LD: nuttx" > > LD: nuttx > > arm-none-eabi-ld --entry=__start -nostdlib --gc-sections --cref > -Map=/home/david/nuttxspace/nuttx/nuttx.map > -T/home/david/nuttxspace/nuttx/boards/arm/stm32/nucleo-f4x1re/scripts/f401re.ld.tmp > -L /home/david/nuttxspace/nuttx/staging -L > /home/david/nuttxspace/nuttx/arch/arm/src/board \ > > -o /home/david/nuttxspace/nuttx/nuttx \ > > --start-group -lsched -ldrivers -lboards -lc -lmm -larch -lxx -lapps -lfs > -lbinfmt -lboard -lboard > /usr/lib/gcc/arm-none-eabi/10.3.1/thumb/v7e-m/nofp/libgcc.a > /usr/lib/gcc/arm-none-eabi/10.3.1/../../../arm-none-eabi/lib/thumb/v7e-m/nofp/libm.a > --end-group > > arm-none-eabi-ld: > /home/david/nuttxspace/nuttx/staging/libapps.a(modbus_main.c.home.david.nuttxspace.apps.examples.modbus_1.o): > in function `modbus_pollthread': > > modbus_main.c:(.text.modbus_pollthread+0x56): undefined reference to > `eMBInit' > > arm-none-eabi-ld: modbus_main.c:(.text.modbus_pollthread+0x82): undefined > reference to `eMBSetSlaveID' > > arm-none-eabi-ld: modbus_main.c:(.text.modbus_pollthread+0x98): undefined > reference to `eMBClose' > > arm-none-eabi-ld: modbus_main.c:(.text.modbus_pollthread+0x9e): undefined > reference to `eMBEnable' > > arm-none-eabi-ld: modbus_main.c:(.text.modbus_pollthread+0xbe): undefined > reference to `eMBPoll' > > arm-none-eabi-ld: modbus_main.c:(.text.modbus_pollthread+0xc4): undefined > reference to `eMBDisable' > > arm-none-eabi-ld: modbus_main.c:(.text.modbus_pollthread+0xc8): undefined > reference to `eMBClose' > > make[1]: *** [Makefile:211: nuttx] Error 1 > > make[1]: Leaving directory '/home/david/nuttxspace/nuttx/arch/arm/src' > > make: *** [tools/Unix.mk:546: nuttx] Error 2 > > "make all" terminated with exit code 2. Build might be incomplete. >
