Umar Naeem / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by Umar Naeem

targets/TARGET_NXP/TARGET_LPC82X/pinmap.c@165:2dd56e6daeec, 2017-05-23 (annotated)

Committer:
ranaumarnaeem
Date:
Tue May 23 12:54:50 2017 +0000
Revision:
165:2dd56e6daeec
Parent:
149:156823d33999 
jhjg

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #include "mbed_assert.h"
<> 144:ef7eb2e8f9f7 17 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 18 #include "mbed_error.h"
<> 144:ef7eb2e8f9f7 19
<> 144:ef7eb2e8f9f7 20
<> 144:ef7eb2e8f9f7 21 void pin_function(PinName pin, int function)
<> 144:ef7eb2e8f9f7 22 {
<> 144:ef7eb2e8f9f7 23 // do nothing
<> 144:ef7eb2e8f9f7 24 return;
<> 144:ef7eb2e8f9f7 25 }
<> 144:ef7eb2e8f9f7 26
<> 144:ef7eb2e8f9f7 27 void pin_mode(PinName pin, PinMode mode)
<> 144:ef7eb2e8f9f7 28 {
<> 144:ef7eb2e8f9f7 29 MBED_ASSERT(pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 if ((pin == P0_10) || (pin == P0_11)) {
<> 144:ef7eb2e8f9f7 32 // True open-drain pins can be configured for different I2C-bus speeds
<> 144:ef7eb2e8f9f7 33 return;
<> 144:ef7eb2e8f9f7 34 }
<> 144:ef7eb2e8f9f7 35
<> 144:ef7eb2e8f9f7 36 __IO uint32_t *reg = (uint32_t *)(LPC_IOCON_BASE + (pin & 0xFF));
<> 144:ef7eb2e8f9f7 37
<> 144:ef7eb2e8f9f7 38 if (mode == OpenDrain) {
<> 144:ef7eb2e8f9f7 39 *reg |= (1 << 10);
<> 144:ef7eb2e8f9f7 40 } else {
<> 144:ef7eb2e8f9f7 41 uint32_t tmp = *reg;
<> 144:ef7eb2e8f9f7 42 tmp &= ~(0x3 << 3);
<> 144:ef7eb2e8f9f7 43 tmp |= (mode & 0x3) << 3;
<> 144:ef7eb2e8f9f7 44 *reg = tmp;
<> 144:ef7eb2e8f9f7 45 }
<> 144:ef7eb2e8f9f7 46 }