Add a restricted peripheral list

Allow peripherals to be excluded from testing.

components/testing/COMPONENT_FPGA_CI_TEST_SHIELD/test_utils.h

@@ -115,6 +115,11 @@ void find_ports(std::list<PortType> &matched_ports, std::list<PortType> &not_mat
                              FormFactorType::pin_to_string(port.pins[i]), port.pins[i]);
                 continue;
             }
+            if (pinmap_list_has_peripheral(pinmap_restricted_peripherals(), port.peripheral)) {
+                utest_printf("Skipping %s peripheral %i with pin %s (%i)\r\n", pin_type,
+                             port.peripheral, FormFactorType::pin_to_string(port.pins[i]), port.pins[i]);
+                continue;
+            }
             // skipp pin searching if single pin port type
             if (PortType::pin_count > 1) {
                 find_port_pins<PortType, FormFactorType>(port);

hal/mbed_pinmap_common.c

@@ -178,3 +178,12 @@ bool pinmap_list_has_pin(const PinList *list, PinName pin)
     return false;
 }
 
+bool pinmap_list_has_peripheral(const PeripheralList *list, int peripheral)
+{
+    for (uint32_t i = 0; i < list->count; i++) {
+        if (list->peripheral[i] == peripheral) {
+            return true;
+        }
+    }
+    return false;
+}

hal/mbed_pinmap_default.c

@@ -77,3 +77,12 @@ MBED_WEAK const PinList *pinmap_restricted_pins()
     return &pin_list;
 }
 
+//*** Default restricted peripherals ***
+MBED_WEAK const PeripheralList *pinmap_restricted_peripherals()
+{
+    static const PeripheralList peripheral_list = {
+        0,
+        0
+    };
+    return &peripheral_list;
+}

hal/pinmap.h

@@ -38,6 +38,11 @@ typedef struct {
     const PinName *pins;
 } PinList;
 
+typedef struct {
+    uint32_t count;
+    const int *peripheral;
+} PeripheralList;
+
 void pin_function(PinName pin, int function);
 void pin_mode(PinName pin, PinMode mode);
 
@@ -123,6 +128,15 @@ bool pinmap_find_peripheral_pins(const PinList *whitelist, const PinList *blackl
  */
 bool pinmap_list_has_pin(const PinList *list, PinName pin);
 
+/**
+ * Check if the peripheral is in the list
+ *
+ * @param list peripheral list to check
+ * @param peripheral peripheral to check for in the list
+ * @return true if the peripheral is in the list, false otherwise
+ */
+bool pinmap_list_has_peripheral(const PeripheralList *list, int peripheral);
+
 /**
  * Get the pin list of pins to avoid during testing
  *
@@ -139,6 +153,31 @@ bool pinmap_list_has_pin(const PinList *list, PinName pin);
  */
 const PinList *pinmap_restricted_pins(void);
 
+/**
+ * Get the pin list of peripherals to avoid during testing
+ *
+ * The restricted peripheral list is used to indicate to testing
+ * that a peripheral should be skipped due to some caveat about it.
+ * For example, using the USB serial port during tests will interfere
+ * with the test runner and should be avoided.
+ *
+ * Targets should override the weak implementation of this
+ * function if they have peripherals which should be
+ * skipped during testing.
+ *
+ * @note Some targets use the same value for multiple
+ * different types of peripherals. For example SPI 0
+ * and UART 0 may both be identified by the peripheral
+ * value 0. If your target does this then do not
+ * use this function to skip peripherals, as this will
+ * unintentionally cause all peripherals with that value
+ * to be skipped. Instead these entries should be removed
+ * from the peripheral PinMap itself.
+ *
+ * @return Pointer to a peripheral list of peripheral to avoid
+ */
+const PeripheralList *pinmap_restricted_peripherals(void);
+
 #ifdef TARGET_FF_ARDUINO
 
 /**