Merge pull request #2999 from jeromecoutant/PR_F303ZE_I2C

NUCLEO_F303ZE: Enable all I2C instances

Author: sg-

targets/TARGET_STM/TARGET_STM32F3/TARGET_NUCLEO_F303ZE/PeripheralPins.c

@@ -117,24 +117,24 @@ const PinMap PinMap_DAC[] = {
 //*** I2C ***
 
 const PinMap PinMap_I2C_SDA[] = {
-    //{PA_10, I2C_2   , STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)}, //(pin used for usb)
+    {PA_10, I2C_2   , STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)}, // warning: pin can be used for usb
     //{PA_14, I2C_1   , STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},// (pin used for stmc)
-   // {PB_5,  I2C_3   , STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF8_I2C3)},// I2C3 not useable with usb , no SCL available.
+    {PB_5,  I2C_3   , STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF8_I2C3)},// warning: I2C3 not useable with usb as no SCL available.
     //{PB_7,  I2C_1   , STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},//(pin used by LED2)
     {PB_9,  I2C_1   , STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, //- ARDUINO D14 
-    //{PC_9,  I2C_3   , STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF3_I2C3)},
+    {PC_9,  I2C_3   , STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF3_I2C3)},
     //{PF_0,  I2C_2   , STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},// PF_0 not useable on board , need resistors changes I2C2 not useable
     {NC,    NC,    0}
 };
 
 const PinMap PinMap_I2C_SCL[] = {
-    //{PA_8,  I2C_3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF3_I2C3)}, //(pin used for usb)
-    //{PA_9,  I2C_2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)}, //(pin used for usb)
+    {PA_8,  I2C_3, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF3_I2C3)}, // warning: pin can be used for usb
+    {PA_9,  I2C_2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)}, // warning: pin can be used for usb
    // {PA_15, I2C_1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
    // {PB_6,  I2C_1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)},
     {PB_8,  I2C_1, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C1)}, //- ARDUINO D15
-    //{PF_1,  I2C_2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},// I2C2 not useable due to PF_0 not useable
-    //{PF_6,  I2C_2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},// I2C2 not useable due to PF_0 not useable
+    {PF_1,  I2C_2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
+    {PF_6,  I2C_2, STM_PIN_DATA(STM_MODE_AF_OD, GPIO_NOPULL, GPIO_AF4_I2C2)},
     {NC,    NC,    0}
 };