Remap pin management

Fix stm32duino#1180

Signed-off-by: Frederic Pillon <[email protected]>

Author: fpistm

Diff for: libraries/SrcWrapper/src/stm32/pinmap.c

@@ -73,25 +73,42 @@ void pin_function(PinName pin, int function)
   }
 
   /* Handle pin remap if any */
-#if defined(LL_SYSCFG_PIN_RMP_PA11) && defined(LL_SYSCFG_PIN_RMP_PA12)
-  if ((pin >= PA_9) && (pin <= PA_12)) {
-    __HAL_RCC_SYSCFG_CLK_ENABLE();
-    switch ((int)pin) {
-      case PA_9:
+#if defined(LL_SYSCFG_PIN_RMP_PA11) && defined(LL_SYSCFG_PIN_RMP_PA12) || defined(SYSCFG_CFGR1_PA11_PA12_RMP)
+  __HAL_RCC_SYSCFG_CLK_ENABLE();
+  switch (pin & PNAME_MASK) {
+#if defined(SYSCFG_CFGR1_PA11_PA12_RMP)
+    /* Disable PIN pair PA11/12 mapped instead of PA9/10 */
+    case PA_9:
+    case PA_10:
+      LL_SYSCFG_DisablePinRemap();
+      break;
+    /* Enable PIN pair PA11/12 mapped instead of PA9/10 */
+    case PA_11:
+    case PA_12:
+      if (pin & PREMAP) {
+        LL_SYSCFG_EnablePinRemap();
+      }
+      break;
+#else
+    case PA_9:
+      if (pin & PREMAP) {
         LL_SYSCFG_EnablePinRemap(LL_SYSCFG_PIN_RMP_PA11);
-        break;
-      case PA_11:
-        LL_SYSCFG_DisablePinRemap(LL_SYSCFG_PIN_RMP_PA11);
-        break;
-      case PA_10:
+      }
+      break;
+    case PA_10:
+      if (pin & PREMAP) {
         LL_SYSCFG_EnablePinRemap(LL_SYSCFG_PIN_RMP_PA12);
-        break;
-      case PA_12:
-        LL_SYSCFG_DisablePinRemap(LL_SYSCFG_PIN_RMP_PA12);
-        break;
-      default:
-        break;
-    }
+      }
+      break;
+    case PA_11:
+      LL_SYSCFG_DisablePinRemap(LL_SYSCFG_PIN_RMP_PA11);
+      break;
+    case PA_12:
+      LL_SYSCFG_DisablePinRemap(LL_SYSCFG_PIN_RMP_PA12);
+      break;
+#endif
+    default:
+      break;
   }
 #endif