Diff: targets/TARGET_NXP/TARGET_LPC23XX/pinmap.c

Revision:

0:f269e3021894

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_NXP/TARGET_LPC23XX/pinmap.c	Sun Oct 23 15:10:02 2016 +0000
@@ -0,0 +1,46 @@
+/* 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 "mbed_assert.h"
+#include "pinmap.h"
+#include "mbed_error.h"
+
+void pin_function(PinName pin, int function) {
+    MBED_ASSERT(pin != (PinName)NC);
+    
+    uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
+    int index = pin_number >> 4;
+    int offset = (pin_number & 0xF) << 1;
+    
+    PINCONARRAY->PINSEL[index] &= ~(0x3 << offset);
+    PINCONARRAY->PINSEL[index] |= function << offset;
+}
+
+void pin_mode(PinName pin, PinMode mode) {
+    MBED_ASSERT((pin != (PinName)NC) && (mode != OpenDrain));
+
+    uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
+    int index = pin_number >> 5;
+    int offset = pin_number & 0x1F;
+    uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
+
+    if (!drain) {
+        index = pin_number >> 4;
+        offset = (pin_number & 0xF) << 1;
+        
+        PINCONARRAY->PINMODE[index] &= ~(0x3 << offset);
+        PINCONARRAY->PINMODE[index] |= (uint32_t)mode << offset;
+    }
+}