Initial support for the latest Arduino core v2.0 // Issue #521

The structure of the latest Arduino core introduces more complex target configuration.
Now the variant folders are common for several boards so we need to properly remap board ID to
properly handle conditional compilation.

Switched Arduino core to CMSIS v5.7.0

Author: valeros

boards/adafruit_feather_f405.json

@@ -4,9 +4,12 @@
     "cpu": "cortex-m4",
     "extra_flags": "-DSTM32F405xx",
     "f_cpu": "168000000L",
+    "framework_extra_flags": {
+      "arduino": "-DCUSTOM_PERIPHERAL_PINS"
+    },
     "mcu": "stm32f405rgt6",
     "product_line": "STM32F405xx",
-    "variant": "FEATHER_F405",
+    "variant": "STM32F4xx/F405RGT_F415RGT",
     "zephyr": {
       "variant": "adafruit_feather_stm32f405"
     }

boards/afroflight_f103cb.json

@@ -1,12 +1,15 @@
 {
   "build": {
+    "arduino": {
+      "variant_h": "variant_AFROFLIGHT_F103CB_XX.h"
+    },
     "core": "stm32",
     "cpu": "cortex-m3",
     "extra_flags": "-DSTM32F1xx -DSTM32F103xB",
     "f_cpu": "72000000L",
     "mcu": "stm32f103cbt6",
     "product_line": "STM32F103xB",
-    "variant": "AFROFLIGHT_F103CB"
+    "variant": "STM32F1xx/F103C8T_F103CB(T-U)"
   },
   "debug": {
     "jlink_device": "STM32F103CB",

boards/armed_v1.json

@@ -4,9 +4,12 @@
     "cpu": "cortex-m4",
     "extra_flags": "-DSTM32F4 -DSTM32F407xx -DSTM32F40_41xxx",
     "f_cpu": "168000000L",
+    "framework_extra_flags": {
+      "arduino": "-DCUSTOM_PERIPHERAL_PINS"
+    },
     "mcu": "stm32f407vet6",
     "product_line": "STM32F407xx",
-    "variant": "ARMED_V1"
+    "variant": "STM32F4xx/F407V(E-G)T_F417V(E-G)T"
   },
   "connectivity": [
     "can"

boards/black_f407ve.json

@@ -1,15 +1,18 @@
 {
   "build": {
+    "arduino": {
+      "variant_h": "variant_BLACK_F407VX.h"
+    },
     "core": "stm32",
     "cpu": "cortex-m4",
     "extra_flags": "-DSTM32F4 -DSTM32F407xx -DSTM32F40_41xxx",
     "f_cpu": "168000000L",
     "framework_extra_flags": {
-      "arduino": "-DARDUINO_BLACK_F407VE"
+      "arduino": "-DCUSTOM_PERIPHERAL_PINS"
     },
     "mcu": "stm32f407vet6",
     "product_line": "STM32F407xx",
-    "variant": "BLACK_F407XX"
+    "variant": "STM32F4xx/F407V(E-G)T_F417V(E-G)T"
   },
   "connectivity": [
     "can"

boards/black_f407vg.json

@@ -1,15 +1,18 @@
 {
   "build": {
+    "arduino": {
+      "variant_h": "variant_BLACK_F407VX.h"
+    },
     "core": "stm32",
     "cpu": "cortex-m4",
     "extra_flags": "-DSTM32F4 -DSTM32F407xx -DSTM32F40_41xxx",
     "f_cpu": "168000000L",
     "framework_extra_flags": {
-      "arduino": "-DARDUINO_BLACK_F407VG"
+      "arduino": "-DCUSTOM_PERIPHERAL_PINS"
     },
     "mcu": "stm32f407vgt6",
     "product_line": "STM32F407xx",
-    "variant": "BLACK_F407XX"
+    "variant": "STM32F4xx/F407V(E-G)T_F417V(E-G)T"
   },
   "connectivity": [
     "can"

boards/black_f407ze.json

@@ -1,15 +1,18 @@
 {
   "build": {
+    "arduino": {
+      "variant_h": "variant_BLACK_F407ZX.h"
+    },
     "core": "stm32",
     "cpu": "cortex-m4",
     "extra_flags": "-DSTM32F4 -DSTM32F407xx -DSTM32F40_41xxx",
     "f_cpu": "168000000L",
     "framework_extra_flags": {
-      "arduino": "-DARDUINO_BLACK_F407ZE"
+      "arduino": "-DCUSTOM_PERIPHERAL_PINS"
     },
     "mcu": "stm32f407zet6",
     "product_line": "STM32F407xx",
-    "variant": "BLACK_F407XX"
+    "variant": "STM32F4xx/F407Z(E-G)T_F417Z(E-G)T"
   },
   "connectivity": [
     "can"

boards/black_f407zg.json

@@ -1,15 +1,18 @@
 {
   "build": {
+    "arduino": {
+      "variant_h": "variant_BLACK_F407ZX.h"
+    },
     "core": "stm32",
     "cpu": "cortex-m4",
     "extra_flags": "-DSTM32F4 -DSTM32F407xx -DSTM32F40_41xxx",
     "f_cpu": "168000000L",
     "framework_extra_flags": {
-      "arduino": "-DARDUINO_BLACK_F407ZG"
+      "arduino": "-DCUSTOM_PERIPHERAL_PINS"
     },
     "mcu": "stm32f407zgt6",
     "product_line": "STM32F407xx",
-    "variant": "BLACK_F407XX",
+    "variant": "STM32F4xx/F407Z(E-G)T_F417Z(E-G)T",
     "zephyr": {
       "variant": "black_f407zg_pro"
     }

boards/blackpill_f103c8.json

@@ -1,5 +1,8 @@
 {
   "build": {
+    "arduino": {
+      "variant_h": "variant_PILL_F103Cx.h"
+    },
     "core": "stm32",
     "cpu": "cortex-m3",
     "extra_flags": "-DSTM32F1 -DSTM32F103xB",
@@ -16,7 +19,7 @@
     ],
     "mcu": "stm32f103c8t6",
     "product_line": "STM32F103xB",
-    "variant": "PILL_F103XX",
+    "variant": "STM32F1xx/F103C8T_F103CB(T-U)",
     "zephyr": {
        "variant": "stm32_min_dev_black"
     }

boards/blackpill_f103c8_128.json

@@ -1,5 +1,8 @@
 {
   "build": {
+    "arduino": {
+      "variant_h": "variant_PILL_F103Cx.h"
+    },
     "core": "stm32",
     "cpu": "cortex-m3",
     "extra_flags": "-DSTM32F1 -DSTM32F103xB",
@@ -16,7 +19,7 @@
     ],
     "mcu": "stm32f103c8t6",
     "product_line": "STM32F103xB",
-    "variant": "PILL_F103XX",
+    "variant": "STM32F1xx/F103C8T_F103CB(T-U)",
     "zephyr": {
        "variant": "stm32_min_dev_black"
     }

boards/blackpill_f401cc.json

@@ -4,9 +4,12 @@
     "cpu": "cortex-m4",
     "extra_flags": "-DSTM32F4xx -DSTM32F401xC",
     "f_cpu": "84000000L",
+    "framework_extra_flags": {
+      "arduino": "-DCUSTOM_PERIPHERAL_PINS"
+    },
     "mcu": "stm32f401ccu6",
     "product_line": "STM32F401xC",
-    "variant": "Generic_F401Cx"
+    "variant": "STM32F4xx/F401CC(F-U-Y)_F401C(B-D-E)(U-Y)"
   },
   "debug": {
     "jlink_device": "STM32F401CC",