Diff: capi/pinmap_common.c

Revision:

0:fd0d7bdfcdc2

Child:

2:143cac498751

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/capi/pinmap_common.c	Tue Nov 20 17:24:08 2012 +0000
@@ -0,0 +1,65 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2012 ARM Limited
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "pinmap.h"
+#include "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_peripheral(PinName pin, const PinMap* map) {
+    if (pin == (uint32_t)NC)
+        return (uint32_t)NC;
+    
+    while (map->pin != NC) {
+        if (map->pin == pin)
+            return map->peripheral;
+        map++;
+    }
+    
+    // no mapping available
+    error("pinmap not found for peripheral");
+    return (uint32_t)NC;
+}