Update pins_arduino.h

Corrected analog I/O, BUILTIN_LED and added missing soc/soc_caps.h.

Before neopixelWrite() would end up in / RMT GPIO ERROR / set gpio for RMT driver failed / rmtInit(): RMT failed to initilize. => None working onboard RGB LED.

variants/lolin_s3/pins_arduino.h

@@ -2,6 +2,7 @@
 #define Pins_Arduino_h
 
 #include <stdint.h>
+#include "soc/soc_caps.h"
 
 #define USB_VID 0x303a
 #define USB_PID 0x1001
@@ -11,13 +12,13 @@
 #define NUM_ANALOG_INPUTS       18
 
 
-static const uint8_t LED_BUILTIN = 38;
+static const uint8_t LED_BUILTIN = SOC_GPIO_PIN_COUNT+38;
 #define BUILTIN_LED  LED_BUILTIN // backward compatibility
 #define LED_BUILTIN LED_BUILTIN
 #define RGB_BUILTIN LED_BUILTIN
 #define RGB_BRIGHTNESS 64
 
-#define analogInputToDigitalPin(p)  (((p)<20)?(analogChannelToDigitalPin(p)):-1)
+#define analogInputToDigitalPin(p)  (((p)<18)?(analogChannelToDigitalPin(p)):-1)
 #define digitalPinToInterrupt(p)    (((p)<48)?(p):-1)
 #define digitalPinHasPWM(p)         (p < 46)