SPI (including Demo) Projects do not compile - because of 'SPI' undeclared Error

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** SPI (including Demo) Projects do not compile - because of 'SPI' undeclared Error : **

/wm-sdk-w806/demo/fatfs /wm-sdk-w806/demo/spi/spi_basic

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$ make flash make[1]: Entering directory '/home/Dell/wm-sdk-w806/app' make[2]: Entering directory '/home/Dell/wm-sdk-w806/app/src' CC main.c main.c: In function 'SPI_Init': main.c:290:21: error: 'SPI' undeclared (first use in this function) hspi.Instance = SPI; ^~~ main.c:290:21: note: each undeclared identifier is reported only once for each function it appears in make[2]: *** [../../tools/W806/rules.mk:184: ../../bin/build/W806/obj/app/src/main.o] Error 1 make[2]: Leaving directory '/home/Dell/wm-sdk-w806/app/src' make[1]: *** [../tools/W806/rules.mk:170: .subdirs] Error 2 make[1]: Leaving directory '/home/Dell/wm-sdk-w806/app' make: *** [tools/W806/rules.mk:170: .subdirs] Error 2