lzbp li / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC11U6X/pinmap.c@227:7bd0639b8911, 2014-06-11 (annotated)

Committer:
mbed_official
Date:
Wed Jun 11 16:00:09 2014 +0100
Revision:
227:7bd0639b8911
Parent:
174:8bb9f3a33240
Child:
250:a49055e7a707
Synchronized with git revision d58d532ebc0e0a96f4fffb8edefc082b71b964af



Full URL: https://github.com/mbedmicro/mbed/commit/d58d532ebc0e0a96f4fffb8edefc082b71b964af/

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 174:8bb9f3a33240 1 /* mbed Microcontroller Library
mbed_official 174:8bb9f3a33240 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 174:8bb9f3a33240 3 *
mbed_official 174:8bb9f3a33240 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 174:8bb9f3a33240 5 * you may not use this file except in compliance with the License.
mbed_official 174:8bb9f3a33240 6 * You may obtain a copy of the License at
mbed_official 174:8bb9f3a33240 7 *
mbed_official 174:8bb9f3a33240 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 174:8bb9f3a33240 9 *
mbed_official 174:8bb9f3a33240 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 174:8bb9f3a33240 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 174:8bb9f3a33240 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 174:8bb9f3a33240 13 * See the License for the specific language governing permissions and
mbed_official 174:8bb9f3a33240 14 * limitations under the License.
mbed_official 174:8bb9f3a33240 15 */
mbed_official 227:7bd0639b8911 16 #include "mbed_assert.h"
mbed_official 174:8bb9f3a33240 17 #include "pinmap.h"
mbed_official 174:8bb9f3a33240 18 #include "error.h"
mbed_official 174:8bb9f3a33240 19
mbed_official 174:8bb9f3a33240 20 void pin_function(PinName pin, int function) {
mbed_official 227:7bd0639b8911 21 MBED_ASSERT(pin != (PinName)NC);
mbed_official 174:8bb9f3a33240 22 __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + (pin & 0x1FF));
mbed_official 174:8bb9f3a33240 23
mbed_official 174:8bb9f3a33240 24 // pin function bits: [2:0] -> 111 = (0x7)
mbed_official 174:8bb9f3a33240 25 *reg = (*reg & ~0x7) | (function & 0x7);
mbed_official 174:8bb9f3a33240 26 }
mbed_official 174:8bb9f3a33240 27
mbed_official 174:8bb9f3a33240 28 void pin_mode(PinName pin, PinMode mode) {
mbed_official 227:7bd0639b8911 29 MBED_ASSERT(pin != (PinName)NC);
mbed_official 174:8bb9f3a33240 30 if ((pin == P0_4) || (pin == P0_5)) {
mbed_official 174:8bb9f3a33240 31 // The true open-drain pins PIO0_4 and PIO0_5 can be configured for different I2C-bus speeds.
mbed_official 174:8bb9f3a33240 32 return;
mbed_official 174:8bb9f3a33240 33 }
mbed_official 174:8bb9f3a33240 34
mbed_official 174:8bb9f3a33240 35 __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + (pin & 0x1FF));
mbed_official 174:8bb9f3a33240 36
mbed_official 174:8bb9f3a33240 37 if (mode == OpenDrain) {
mbed_official 174:8bb9f3a33240 38 *reg |= (1 << 10);
mbed_official 174:8bb9f3a33240 39 } else {
mbed_official 174:8bb9f3a33240 40 uint32_t tmp = *reg;
mbed_official 174:8bb9f3a33240 41 tmp &= ~(0x3 << 3);
mbed_official 174:8bb9f3a33240 42 tmp |= (mode & 0x3) << 3;
mbed_official 174:8bb9f3a33240 43 *reg = tmp;
mbed_official 174:8bb9f3a33240 44 }
mbed_official 174:8bb9f3a33240 45 }