1 /* mbed Microcontroller Library
2 * Copyright (c) 2006-2013 ARM Limited
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 #include "mbed_assert.h"
18 #include "mbed_error.h"
20 void pin_function(PinName pin, int function) {
21 MBED_ASSERT(pin != (PinName)NC);
23 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
24 int index = pin_number >> 4;
25 int offset = (pin_number & 0xF) << 1;
27 PINCONARRAY->PINSEL[index] &= ~(0x3 << offset);
28 PINCONARRAY->PINSEL[index] |= function << offset;
31 void pin_mode(PinName pin, PinMode mode) {
32 MBED_ASSERT(pin != (PinName)NC);
34 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
35 int index = pin_number >> 5;
36 int offset = pin_number & 0x1F;
37 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
39 PINCONARRAY->PINMODE_OD[index] &= ~(drain << offset);
40 PINCONARRAY->PINMODE_OD[index] |= drain << offset;
43 index = pin_number >> 4;
44 offset = (pin_number & 0xF) << 1;
46 PINCONARRAY->PINMODE[index] &= ~(0x3 << offset);
47 PINCONARRAY->PINMODE[index] |= (uint32_t)mode << offset;