Use C++ 20 by default and update compiler.

Author: h2zero

builder/frameworks/arduino/nrf5.py

@@ -34,7 +34,7 @@
 env.Append(
     ASFLAGS=["-x", "assembler-with-cpp"],
 
-    CFLAGS=["-std=gnu11"],
+    CFLAGS=["-std=gnu17"],
 
     CCFLAGS=[
         "-Os",  # optimize for size
@@ -50,7 +50,7 @@
     CXXFLAGS=[
         "-fno-rtti",
         "-fno-exceptions",
-        "-std=gnu++11",
+        "-std=gnu++20",
         "-fno-threadsafe-statics"
     ],
 

platform.json

@@ -36,10 +36,7 @@
     "toolchain-gccarmnoneeabi": {
       "type": "toolchain",
       "owner": "platformio",
-      "version": ">=1.80301.0,<1.100301.0",
-      "optionalVersions": [
-        "~1.90301.0"
-      ]
+      "version": "1.100301.220327"
     },
     "tool-adafruit-nrfutil": {
       "owner": "platformio",
@@ -69,4 +66,4 @@
       "version": "~1.164.0"
     }
   }
-}
+}