Adam Kucybala / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC11U6X/pinmap.c@174:8bb9f3a33240, 2014-04-29 (annotated)

Committer:
mbed_official
Date:
Tue Apr 29 11:15:07 2014 +0100
Revision:
174:8bb9f3a33240
Synchronized with git revision 5bf985ebc651a2c31cefabd9d62c51dc465ef60a



Full URL: https://github.com/mbedmicro/mbed/commit/5bf985ebc651a2c31cefabd9d62c51dc465ef60a/



[NUCLEO_L152RE/F103RB] Add LSE configuration for RTC

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 174:8bb9f3a33240 16 #include "pinmap.h"
mbed_official 174:8bb9f3a33240 17 #include "error.h"
mbed_official 174:8bb9f3a33240 18
mbed_official 174:8bb9f3a33240 19 void pin_function(PinName pin, int function) {
mbed_official 174:8bb9f3a33240 20 if (pin == (uint32_t)NC)
mbed_official 174:8bb9f3a33240 21 {
mbed_official 174:8bb9f3a33240 22 return;
mbed_official 174:8bb9f3a33240 23 }
mbed_official 174:8bb9f3a33240 24
mbed_official 174:8bb9f3a33240 25 __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + (pin & 0x1FF));
mbed_official 174:8bb9f3a33240 26
mbed_official 174:8bb9f3a33240 27 // pin function bits: [2:0] -> 111 = (0x7)
mbed_official 174:8bb9f3a33240 28 *reg = (*reg & ~0x7) | (function & 0x7);
mbed_official 174:8bb9f3a33240 29 }
mbed_official 174:8bb9f3a33240 30
mbed_official 174:8bb9f3a33240 31 void pin_mode(PinName pin, PinMode mode) {
mbed_official 174:8bb9f3a33240 32 if (pin == (uint32_t)NC)
mbed_official 174:8bb9f3a33240 33 {
mbed_official 174:8bb9f3a33240 34 return;
mbed_official 174:8bb9f3a33240 35 }
mbed_official 174:8bb9f3a33240 36
mbed_official 174:8bb9f3a33240 37 if ((pin == P0_4) || (pin == P0_5)) {
mbed_official 174:8bb9f3a33240 38 // The true open-drain pins PIO0_4 and PIO0_5 can be configured for different I2C-bus speeds.
mbed_official 174:8bb9f3a33240 39 return;
mbed_official 174:8bb9f3a33240 40 }
mbed_official 174:8bb9f3a33240 41
mbed_official 174:8bb9f3a33240 42 __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + (pin & 0x1FF));
mbed_official 174:8bb9f3a33240 43
mbed_official 174:8bb9f3a33240 44 if (mode == OpenDrain) {
mbed_official 174:8bb9f3a33240 45 *reg |= (1 << 10);
mbed_official 174:8bb9f3a33240 46 } else {
mbed_official 174:8bb9f3a33240 47 uint32_t tmp = *reg;
mbed_official 174:8bb9f3a33240 48 tmp &= ~(0x3 << 3);
mbed_official 174:8bb9f3a33240 49 tmp |= (mode & 0x3) << 3;
mbed_official 174:8bb9f3a33240 50 *reg = tmp;
mbed_official 174:8bb9f3a33240 51 }
mbed_official 174:8bb9f3a33240 52 }