FFT / iFFT?

[cricketbee]

Hello --as a way to finally get FFT to work on the daisy I copied your code to try (and switched it to the patch)

I put (i think) all the relevant files in the makefile (see this post)

CMSIS DSP library support (arm_math.h)

I haven’t done it with wildcarding, but there are three variables that need to be edited/set to work add the CMSIS files. I was only using a few things when I was experimenting so the C_SOURCES list is fairly short. However, as many files as needed can be added manually. It should also be able to be set with a wildcard similar to above. This can sneak by until you hit the compiler error: ASM_SOURCES = \ $(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_bitreversal2.s here are …

and i changed the name of that one file to a lower case S. (so the asm file would work)

BUT now I am getting these new errors

/Users/cricketbee/desktop/daisyexamples/patch/blank/blank.cpp:71: undefined reference to arm_cmplx_mag_f32' /Applications/ARM/bin/../lib/gcc/arm-none-eabi/10.3.1/../../../../arm-none-eabi/bin/ld: /Users/cricketbee/desktop/daisyexamples/patch/blank/blank.cpp:74: undefined reference to arm_max_f32’

I have those in my makefile

Project Name

TARGET = Blank

Sources

CPP_SOURCES = blank.cpp

OPT = -Os

Library Locations

LIBDAISY_DIR = …/…/libDaisy
DAISYSP_DIR = …/…/DaisySP
ASM_SOURCES =
$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_bitreversal2.s
C_SOURCES =
$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_rfft_fast_f32.c
$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_rfft_fast_init_f32.c
$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/CommonTables/arm_common_tables.c
$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/CommonTables/arm_const_structs.c
$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_f32.c
$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_bitreversal.c
$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix8_f32.c
$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix4_f32.c
$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_cfft_radix4_f32.c
$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_cmplx_mag_f32.c
$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Source/ComplexMathFunctions/arm_max_f32.c
C_INCLUDES +=
-I$(LIBDAISY_DIR)/Drivers/CMSIS/DSP/Include

Core location, and generic Makefile.

SYSTEM_FILES_DIR = $(LIBDAISY_DIR)/core
include $(SYSTEM_FILES_DIR)/Makefile

thanks for any help