lzbp li / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC81X/pinmap.c@46:bebbbd80dd87, 2013-11-11 (annotated)

Committer:
mbed_official
Date:
Mon Nov 11 13:30:09 2013 +0000
Revision:
46:bebbbd80dd87
Child:
227:7bd0639b8911
Synchronized with git revision b2733e9b9af906952b295cd6abcf916bf79780ab

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 46:bebbbd80dd87 1 /* mbed Microcontroller Library
mbed_official 46:bebbbd80dd87 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 46:bebbbd80dd87 3 *
mbed_official 46:bebbbd80dd87 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 46:bebbbd80dd87 5 * you may not use this file except in compliance with the License.
mbed_official 46:bebbbd80dd87 6 * You may obtain a copy of the License at
mbed_official 46:bebbbd80dd87 7 *
mbed_official 46:bebbbd80dd87 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 46:bebbbd80dd87 9 *
mbed_official 46:bebbbd80dd87 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 46:bebbbd80dd87 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 46:bebbbd80dd87 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 46:bebbbd80dd87 13 * See the License for the specific language governing permissions and
mbed_official 46:bebbbd80dd87 14 * limitations under the License.
mbed_official 46:bebbbd80dd87 15 */
mbed_official 46:bebbbd80dd87 16 #include "pinmap.h"
mbed_official 46:bebbbd80dd87 17 #include "error.h"
mbed_official 46:bebbbd80dd87 18
mbed_official 46:bebbbd80dd87 19 __IO uint32_t* IOCON_REGISTERS[18] = {
mbed_official 46:bebbbd80dd87 20 &LPC_IOCON->PIO0_0 , &LPC_IOCON->PIO0_1 , &LPC_IOCON->PIO0_2 ,
mbed_official 46:bebbbd80dd87 21 &LPC_IOCON->PIO0_3 , &LPC_IOCON->PIO0_4 , &LPC_IOCON->PIO0_5 ,
mbed_official 46:bebbbd80dd87 22 &LPC_IOCON->PIO0_6 , &LPC_IOCON->PIO0_7 , &LPC_IOCON->PIO0_8 ,
mbed_official 46:bebbbd80dd87 23 &LPC_IOCON->PIO0_9 , &LPC_IOCON->PIO0_10, &LPC_IOCON->PIO0_11,
mbed_official 46:bebbbd80dd87 24 &LPC_IOCON->PIO0_12, &LPC_IOCON->PIO0_13, &LPC_IOCON->PIO0_14,
mbed_official 46:bebbbd80dd87 25 &LPC_IOCON->PIO0_15, &LPC_IOCON->PIO0_16, &LPC_IOCON->PIO0_17,
mbed_official 46:bebbbd80dd87 26 };
mbed_official 46:bebbbd80dd87 27
mbed_official 46:bebbbd80dd87 28 void pin_function(PinName pin, int function) {
mbed_official 46:bebbbd80dd87 29
mbed_official 46:bebbbd80dd87 30 }
mbed_official 46:bebbbd80dd87 31
mbed_official 46:bebbbd80dd87 32 void pin_mode(PinName pin, PinMode mode) {
mbed_official 46:bebbbd80dd87 33 if (pin == (uint32_t)NC) { return; }
mbed_official 46:bebbbd80dd87 34
mbed_official 46:bebbbd80dd87 35 if ((pin == 10) || (pin == 11)) {
mbed_official 46:bebbbd80dd87 36 // True open-drain pins can be configured for different I2C-bus speeds
mbed_official 46:bebbbd80dd87 37 return;
mbed_official 46:bebbbd80dd87 38 }
mbed_official 46:bebbbd80dd87 39
mbed_official 46:bebbbd80dd87 40 __IO uint32_t *reg = IOCON_REGISTERS[pin];
mbed_official 46:bebbbd80dd87 41
mbed_official 46:bebbbd80dd87 42 if (mode == OpenDrain) {
mbed_official 46:bebbbd80dd87 43 *reg |= (1 << 10);
mbed_official 46:bebbbd80dd87 44 } else {
mbed_official 46:bebbbd80dd87 45 uint32_t tmp = *reg;
mbed_official 46:bebbbd80dd87 46 tmp &= ~(0x3 << 3);
mbed_official 46:bebbbd80dd87 47 tmp |= (mode & 0x3) << 3;
mbed_official 46:bebbbd80dd87 48 *reg = tmp;
mbed_official 46:bebbbd80dd87 49 }
mbed_official 46:bebbbd80dd87 50 }