Merge pull request #30 from earlephilhower/fcpu

Set F_CPU macro, remove linker align warnings

boards.txt

@@ -17,6 +17,7 @@ rpipico.upload.wait_for_upload_port=true
 rpipico.upload.erase_cmd=
 rpipico.serial.disableDTR=false
 rpipico.serial.disableRTS=false
+rpipico.build.f_cpu=125000000
 rpipico.build.led=
 rpipico.build.core=rp2040
 rpipico.build.mcu=rp2040

platform.txt

@@ -60,7 +60,7 @@ compiler.objcopy.eep.flags=-O ihex -j .eeprom --set-section-flags=.eeprom=alloc,
 compiler.elf2hex.bin.flags=-O binary
 compiler.elf2hex.hex.flags=-O ihex -R .eeprom
 compiler.elf2hex.cmd=arm-none-eabi-objcopy
-compiler.ldflags={compiler.wrap} -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align
+compiler.ldflags={compiler.wrap} -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--unresolved-symbols=report-all -Wl,--warn-common
 compiler.size.cmd=arm-none-eabi-size
 compiler.define=-DARDUINO=
 compiler.readelf.cmd=arm-none-eabi-readelf