Ermanno Brusadin / mbed-src

mbed library sources

targets/hal/TARGET_Freescale/TARGET_KLXX/pinmap.c@0:0a673c671a56, 2016-07-27 (annotated)

Committer:
ebrus
Date:
Wed Jul 27 18:35:32 2016 +0000
Revision:
0:0a673c671a56
4

Who changed what in which revision?

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ebrus 0:0a673c671a56 1 /* mbed Microcontroller Library
ebrus 0:0a673c671a56 2 * Copyright (c) 2006-2013 ARM Limited
ebrus 0:0a673c671a56 3 *
ebrus 0:0a673c671a56 4 * Licensed under the Apache License, Version 2.0 (the "License");
ebrus 0:0a673c671a56 5 * you may not use this file except in compliance with the License.
ebrus 0:0a673c671a56 6 * You may obtain a copy of the License at
ebrus 0:0a673c671a56 7 *
ebrus 0:0a673c671a56 8 * http://www.apache.org/licenses/LICENSE-2.0
ebrus 0:0a673c671a56 9 *
ebrus 0:0a673c671a56 10 * Unless required by applicable law or agreed to in writing, software
ebrus 0:0a673c671a56 11 * distributed under the License is distributed on an "AS IS" BASIS,
ebrus 0:0a673c671a56 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ebrus 0:0a673c671a56 13 * See the License for the specific language governing permissions and
ebrus 0:0a673c671a56 14 * limitations under the License.
ebrus 0:0a673c671a56 15 */
ebrus 0:0a673c671a56 16 #include "mbed_assert.h"
ebrus 0:0a673c671a56 17 #include "pinmap.h"
ebrus 0:0a673c671a56 18
ebrus 0:0a673c671a56 19 void pin_function(PinName pin, int function) {
ebrus 0:0a673c671a56 20 MBED_ASSERT(pin != (PinName)NC);
ebrus 0:0a673c671a56 21
ebrus 0:0a673c671a56 22 uint32_t port_n = (uint32_t)pin >> PORT_SHIFT;
ebrus 0:0a673c671a56 23 uint32_t pin_n = (uint32_t)(pin & 0x7C) >> 2;
ebrus 0:0a673c671a56 24
ebrus 0:0a673c671a56 25 SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port_n);
ebrus 0:0a673c671a56 26 __IO uint32_t* pin_pcr = &(((PORT_Type *)(PORTA_BASE + 0x1000 * port_n)))->PCR[pin_n];
ebrus 0:0a673c671a56 27
ebrus 0:0a673c671a56 28 // pin mux bits: [10:8] -> 11100000000 = (0x700)
ebrus 0:0a673c671a56 29 *pin_pcr = (*pin_pcr & ~0x700) | (function << 8);
ebrus 0:0a673c671a56 30 }
ebrus 0:0a673c671a56 31
ebrus 0:0a673c671a56 32 void pin_mode(PinName pin, PinMode mode) {
ebrus 0:0a673c671a56 33 MBED_ASSERT(pin != (PinName)NC);
ebrus 0:0a673c671a56 34
ebrus 0:0a673c671a56 35 __IO uint32_t* pin_pcr = (__IO uint32_t*)(PORTA_BASE + pin);
ebrus 0:0a673c671a56 36
ebrus 0:0a673c671a56 37 // pin pullup bits: [1:0] -> 11 = (0x3)
ebrus 0:0a673c671a56 38 *pin_pcr = (*pin_pcr & ~0x3) | mode;
ebrus 0:0a673c671a56 39 }