Has anyone seen for compiling error for dspin.h for not having the valid preprocessing token? How to resolve it?

[LGuo]

​In dspin.h file

#define CHECK_REG(reg, result) if (dSPIN_RegsStruct-> ## reg != dSPIN_Get_Param(dSPIN_ ## reg)) result |= 1 << ((uint8_t) dSPIN_ ## reg)

Compiling error for dspin.c

uint32_t dSPIN_Registers_Check(dSPIN_RegsStruct_TypeDef* dSPIN_RegsStruct)

{

uint32_t result = 0;

CHECK_REG(ABS_POS, result);

make -j8 all

arm-none-eabi-gcc "../Src/dspin.c" -mcpu=cortex-m7 -std=gnu11 -g3 -DUSE_HAL_DRIVER -DSTM32F767xx -DDEBUG -c -I../Inc -I../Drivers/CMSIS/Include -I../Drivers/CMSIS/Device/ST/STM32F7xx/Include -I../Drivers/STM32F7xx_HAL_Driver/Inc -I../Drivers/STM32F7xx_HAL_Driver/Inc/Legacy -O0 -ffunction-sections -fdata-sections -Wall -fstack-usage -MMD -MP -MF"Src/dspin.d" -MT"Src/dspin.o" --specs=nano.specs -mfpu=fpv5-d16 -mfloat-abi=hard -mthumb -o "Src/dspin.o"

arm-none-eabi-gcc "../Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc.c" -mcpu=cortex-m7 -std=gnu11 -g3 -DUSE_HAL_DRIVER -DSTM32F767xx -DDEBUG -c -I../Inc -I../Drivers/CMSIS/Include -I../Drivers/CMSIS/Device/ST/STM32F7xx/Include -I../Drivers/STM32F7xx_HAL_Driver/Inc -I../Drivers/STM32F7xx_HAL_Driver/Inc/Legacy -O0 -ffunction-sections -fdata-sections -Wall -fstack-usage -MMD -MP -MF"Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc.d" -MT"Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc.o" --specs=nano.specs -mfpu=fpv5-d16 -mfloat-abi=hard -mthumb -o "Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc.o"

arm-none-eabi-gcc "../Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc_ex.c" -mcpu=cortex-m7 -std=gnu11 -g3 -DUSE_HAL_DRIVER -DSTM32F767xx -DDEBUG -c -I../Inc -I../Drivers/CMSIS/Include -I../Drivers/CMSIS/Device/ST/STM32F7xx/Include -I../Drivers/STM32F7xx_HAL_Driver/Inc -I../Drivers/STM32F7xx_HAL_Driver/Inc/Legacy -O0 -ffunction-sections -fdata-sections -Wall -fstack-usage -MMD -MP -MF"Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc_ex.d" -MT"Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc_ex.o" --specs=nano.specs -mfpu=fpv5-d16 -mfloat-abi=hard -mthumb -o "Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rcc_ex.o"

arm-none-eabi-gcc "../Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_tim.c" -mcpu=cortex-m7 -std=gnu11 -g3 -DUSE_HAL_DRIVER -DSTM32F767xx -DDEBUG -c -I../Inc -I../Drivers/CMSIS/Include -I../Drivers/CMSIS/Device/ST/STM32F7xx/Include -I../Drivers/STM32F7xx_HAL_Driver/Inc -I../Drivers/STM32F7xx_HAL_Driver/Inc/Legacy -O0 -ffunction-sections -fdata-sections -Wall -fstack-usage -MMD -MP -MF"Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_tim.d" -MT"Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_tim.o" --specs=nano.specs -mfpu=fpv5-d16 -mfloat-abi=hard -mthumb -o "Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_tim.o"

arm-none-eabi-gcc "../Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_tim_ex.c" -mcpu=cortex-m7 -std=gnu11 -g3 -DUSE_HAL_DRIVER -DSTM32F767xx -DDEBUG -c -I../Inc -I../Drivers/CMSIS/Include -I../Drivers/CMSIS/Device/ST/STM32F7xx/Include -I../Drivers/STM32F7xx_HAL_Driver/Inc -I../Drivers/STM32F7xx_HAL_Driver/Inc/Legacy -O0 -ffunction-sections -fdata-sections -Wall -fstack-usage -MMD -MP -MF"Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_tim_ex.d" -MT"Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_tim_ex.o" --specs=nano.specs -mfpu=fpv5-d16 -mfloat-abi=hard -mthumb -o "Drivers/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_tim_ex.o"

In file included from ../Inc/dspin_config.h:27:0,

from ../Src/dspin.c:24:

../Src/dspin.c: In function 'dSPIN_Registers_Get':

../Inc/dspin.h:889:35: error: pasting "->" and "ABS_POS" does not give a valid preprocessing token

if (read_reg != dSPIN_RegsStruct-> ## reg_name) strcpy(diff,"x"); \

[Tesla DeLorean]

So grep project and see what ABS_POS is set to, and if you have missing or multiple instances of it.

[LGuo]

​Hi Clive,

Thanks for your reply. It looks like the compiler is not able to recognize the Macro token paste operator : ##. The compiler supposedly should be able to preprocess the macro CHECK_REF(ABS_POS, result) by replacing it with if (dSPIN_RegsStruct-> ABS_POS != dSPIN_Get_Param(dSPIN_ ABS_POS)) result |= 1 << ((uint8_t) dSPIN_ ABS_POS

Is there any option in the compiler I need to turn so that the compiler is able to support the Token Paste Operator : ##?

Thanks a lot.

[Tesla DeLorean]

Sounds more like it is working but one or more of the things it is trying to paste together is wrong.

Do any of the demo projects using dspin.c work/build properly?

Can you enable the compiler to output the pre-processor pass of the source so you can inspect/review that?

[LGuo]

​Do you know how? It seems I was not able to find such a compiler option setting. Thanks