Allow for no PIN_LED for board variants

Author: earlephilhower

cores/rp2040/cyw43_wrappers.cpp

@@ -171,9 +171,11 @@ extern "C" void __digitalWrite(pin_size_t pin, PinStatus val);
 extern "C" PinStatus __digitalRead(pin_size_t pin);
 
 extern "C" void cyw43_pinMode(pin_size_t pin, PinMode mode) {
+#if defined PIN_LED
     if (!__isPicoW && (pin == PIN_LED)) {
         pin = 25;  // Silently swap in the Pico's LED
     }
+#endif
     if (pin < 64) {
         __pinMode(pin, mode);
     } else {
@@ -182,9 +184,11 @@ extern "C" void cyw43_pinMode(pin_size_t pin, PinMode mode) {
 }
 
 extern "C" void cyw43_digitalWrite(pin_size_t pin, PinStatus val) {
+#if defined PIN_LED
     if (!__isPicoW && (pin == PIN_LED)) {
         pin = 25;  // Silently swap in the Pico's LED
     }
+#endif
     if (pin < 64) {
         __digitalWrite(pin, val);
     } else {
@@ -193,9 +197,11 @@ extern "C" void cyw43_digitalWrite(pin_size_t pin, PinStatus val) {
 }
 
 extern "C" PinStatus cyw43_digitalRead(pin_size_t pin) {
+#ifdef PIN_LED
     if (!__isPicoW && (pin == PIN_LED)) {
         pin = 25;  // Silently swap in the Pico's LED
     }
+#endif
     if (pin < 64) {
         return __digitalRead(pin);
     } else {

platform.txt

@@ -106,7 +106,7 @@ build.flags.libstdcpp=-lstdc++
 build.flags.exceptions=-fno-exceptions
 build.flags.stackprotect=
 build.libpico=libpico.a
-build.libpicow=libipv4.a
+build.libpicow=liblwip.a
 build.boot2=boot2_generic_03h_4_padded_checksum
 build.libpicowdefs=-DLWIP_IPV6=0 -DLWIP_IPV4=1
 build.wificc=-DWIFICC=CYW43_COUNTRY_WORLDWIDE