add wifi esp32 support

Author: ladyada

boards.txt

@@ -533,7 +533,7 @@ adafruit_pyportal_m4.build.usb_product="Adafruit PyPortal M4"
 adafruit_pyportal_m4.build.usb_manufacturer="Adafruit LLC"
 adafruit_pyportal_m4.build.board=PYPORTAL_M4
 adafruit_pyportal_m4.build.core=arduino
-adafruit_pyportal_m4.build.extra_flags=-D__SAMD51J20A__ -DADAFRUIT_PYPORTAL -D__SAMD51__ {build.usb_flags} -D__FPU_PRESENT -DARM_MATH_CM4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
+adafruit_pyportal_m4.build.extra_flags=-D__SAMD51J20A__ -DADAFRUIT_PYPORTAL  -DCRYSTALLESS -D__SAMD51__ {build.usb_flags} -D__FPU_PRESENT -DARM_MATH_CM4 -mfloat-abi=hard -mfpu=fpv4-sp-d16
 adafruit_pyportal_m4.build.ldscript=linker_scripts/gcc/flash_with_bootloader.ld
 adafruit_pyportal_m4.build.openocdscript=openocd_scripts/arduino_zero.cfg
 adafruit_pyportal_m4.build.variant=pyportal_m4

variants/pyportal_m4/variant.h

@@ -124,9 +124,13 @@ static const uint8_t DAC0 = PIN_DAC0;
 static const uint8_t ATN = PIN_ATN;
 
 /* WiFi interfaces */
-#define SerialNina Serial1
-#define NINA_GPIO0    6
-#define NINA_RESETN   7
+#define SerialNina      Serial1
+#define SPIWIFI         SPI
+#define NINA_GPIO0      6
+#define NINA_RESETN     7
+#define SPIWIFI_SS      8
+#define SPIWIFI_ACK     5
+#define SPIWIFI_RESET   7
 
 /*
  * Serial interfaces