Diff: hal/mbed_pinmap_common.c

Revision:

1:8a094db1347f

diff -r 79dc523949ef -r 8a094db1347f hal/mbed_pinmap_common.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hal/mbed_pinmap_common.c	Mon Nov 09 00:02:47 2020 -0500
@@ -0,0 +1,89 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "hal/pinmap.h"
+#include "platform/mbed_error.h"
+
+void pinmap_pinout(PinName pin, const PinMap *map) {
+    if (pin == NC)
+        return;
+
+    while (map->pin != NC) {
+        if (map->pin == pin) {
+            pin_function(pin, map->function);
+
+            pin_mode(pin, PullNone);
+            return;
+        }
+        map++;
+    }
+    error("could not pinout");
+}
+
+uint32_t pinmap_merge(uint32_t a, uint32_t b) {
+    // both are the same (inc both NC)
+    if (a == b)
+        return a;
+
+    // one (or both) is not connected
+    if (a == (uint32_t)NC)
+        return b;
+    if (b == (uint32_t)NC)
+        return a;
+
+    // mis-match error case
+    error("pinmap mis-match");
+    return (uint32_t)NC;
+}
+
+uint32_t pinmap_find_peripheral(PinName pin, const PinMap* map) {
+    while (map->pin != NC) {
+        if (map->pin == pin)
+            return map->peripheral;
+        map++;
+    }
+    return (uint32_t)NC;
+}
+
+uint32_t pinmap_peripheral(PinName pin, const PinMap* map) {
+    uint32_t peripheral = (uint32_t)NC;
+
+    if (pin == (PinName)NC)
+        return (uint32_t)NC;
+    peripheral = pinmap_find_peripheral(pin, map);
+    if ((uint32_t)NC == peripheral) // no mapping available
+        error("pinmap not found for peripheral");
+    return peripheral;
+}
+
+uint32_t pinmap_find_function(PinName pin, const PinMap* map) {
+    while (map->pin != NC) {
+        if (map->pin == pin)
+            return map->function;
+        map++;
+    }
+    return (uint32_t)NC;
+}
+
+uint32_t pinmap_function(PinName pin, const PinMap* map) {
+    uint32_t function = (uint32_t)NC;
+
+    if (pin == (PinName)NC)
+        return (uint32_t)NC;
+    function = pinmap_find_function(pin, map);
+    if ((uint32_t)NC == function) // no mapping available
+        error("pinmap not found for function");
+    return function;
+}