DM: fixed m0 boards compilation error with math additions

Author: deanm1278

boards.txt

@@ -32,7 +32,7 @@ adafruit_feather_m0.build.usb_product="Feather M0"
 adafruit_feather_m0.build.usb_manufacturer="Adafruit"
 adafruit_feather_m0.build.board=SAMD_FEATHER_M0
 adafruit_feather_m0.build.core=arduino
-adafruit_feather_m0.build.extra_flags=-DARDUINO_SAMD_ZERO -D__SAMD21G18A__ {build.usb_flags}
+adafruit_feather_m0.build.extra_flags=-DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -D__SAMD21G18A__ {build.usb_flags}
 adafruit_feather_m0.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
 adafruit_feather_m0.build.openocdscript=openocd_scripts/arduino_zero.cfg
 adafruit_feather_m0.build.variant=arduino_zero
@@ -60,7 +60,7 @@ adafruit_feather_m0_express.build.usb_product="Feather M0 Express"
 adafruit_feather_m0_express.build.usb_manufacturer="Adafruit"
 adafruit_feather_m0_express.build.board=SAMD_FEATHER_M0_EXPRESS
 adafruit_feather_m0_express.build.core=arduino
-adafruit_feather_m0_express.build.extra_flags=-DARDUINO_SAMD_ZERO -DARDUINO_SAMD_FEATHER_M0 -DADAFRUIT_FEATHER_M0_EXPRESS -D__SAMD21G18A__ {build.usb_flags}
+adafruit_feather_m0_express.build.extra_flags=-DARDUINO_SAMD_ZERO -DARDUINO_SAMD_FEATHER_M0 -DARM_MATH_CM0PLUS -DADAFRUIT_FEATHER_M0_EXPRESS -D__SAMD21G18A__ {build.usb_flags}
 adafruit_feather_m0_express.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
 adafruit_feather_m0_express.build.openocdscript=openocd_scripts/arduino_zero.cfg
 adafruit_feather_m0_express.build.variant=feather_m0_express
@@ -88,7 +88,7 @@ adafruit_feather_m0_express.compiler.arm.cmsis.ldflags="-L{runtime.tools.CMSIS-4
 #adafruit_radio_m0.build.usb_manufacturer="Adafruit"
 #adafruit_radio_m0.build.board=SAMD_ZERO
 #adafruit_radio_m0.build.core=arduino
-#adafruit_radio_m0.build.extra_flags=-D__SAMR21G18A__ {build.usb_flags}
+#adafruit_radio_m0.build.extra_flags=-D__SAMR21G18A__ -DARM_MATH_CM0PLUS {build.usb_flags}
 #adafruit_radio_m0.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
 #adafruit_radio_m0.build.openocdscript=openocd_scripts/arduino_zero.cfg
 #adafruit_radio_m0.build.variant=zero_radio
@@ -115,7 +115,7 @@ adafruit_metro_m0.build.usb_product="Metro M0 Express"
 adafruit_metro_m0.build.usb_manufacturer="Adafruit"
 adafruit_metro_m0.build.board=SAMD_ZERO
 adafruit_metro_m0.build.core=arduino
-adafruit_metro_m0.build.extra_flags=-D__SAMD21G18A__  -DARDUINO_SAMD_ZERO -DADAFRUIT_METRO_M0_EXPRESS {build.usb_flags}
+adafruit_metro_m0.build.extra_flags=-D__SAMD21G18A__  -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -DADAFRUIT_METRO_M0_EXPRESS {build.usb_flags}
 adafruit_metro_m0.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
 adafruit_metro_m0.build.openocdscript=openocd_scripts/arduino_zero.cfg
 adafruit_metro_m0.build.variant=metro_m0
@@ -145,7 +145,7 @@ adafruit_circuitplayground_m0.build.usb_product="Circuit Playground Express"
 adafruit_circuitplayground_m0.build.usb_manufacturer="Adafruit"
 adafruit_circuitplayground_m0.build.board=SAMD_CIRCUITPLAYGROUND_EXPRESS
 adafruit_circuitplayground_m0.build.core=arduino
-adafruit_circuitplayground_m0.build.extra_flags=-DCRYSTALLESS -DARDUINO_SAMD_ZERO -D__SAMD21G18A__ -DADAFRUIT_CIRCUITPLAYGROUND_M0 {build.usb_flags}
+adafruit_circuitplayground_m0.build.extra_flags=-DCRYSTALLESS -DARDUINO_SAMD_ZERO -D__SAMD21G18A__ -DARM_MATH_CM0PLUS -DADAFRUIT_CIRCUITPLAYGROUND_M0 {build.usb_flags}
 adafruit_circuitplayground_m0.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
 adafruit_circuitplayground_m0.build.openocdscript=openocd_scripts/arduino_zero.cfg
 adafruit_circuitplayground_m0.build.variant=circuitplay

cores/arduino/math_helper.h

@@ -60,4 +60,4 @@ void arm_apply_guard_bits (float32_t * pIn, uint32_t numSamples, uint32_t guard_
 uint32_t arm_compare_fixed_q15(q15_t *pIn, q15_t * pOut, uint32_t numSamples);
 uint32_t arm_compare_fixed_q31(q31_t *pIn, q31_t *pOut, uint32_t numSamples);
 uint32_t arm_calc_2pow(uint32_t guard_bits);
-#endif
+#endif