Add alternative CAN pins to DISCO_F303VC

Author: szechyjs

targets/TARGET_STM/TARGET_STM32F3/TARGET_DISCO_F303VC/PeripheralPins.c

@@ -344,11 +344,15 @@ const PinMap PinMap_SPI_SSEL[] = {
 };
 
 const PinMap PinMap_CAN_RD[] = {
-    {PA_11, CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
+    //{PA_11, CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)}, //(pin used for usb)
+    {PB_8,  CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
+    {PD_0,  CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF7_CAN)},
     {NC,    NC,    0}
 };
 
 const PinMap PinMap_CAN_TD[] = {
-    {PA_12, CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
+    //{PA_12, CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)}, //(pin used for usb)
+    {PB_9,  CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF9_CAN)},
+    {PD_1,  CAN_1, STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, GPIO_AF7_CAN)},
     {NC,    NC,    0}
 };