lzbp li / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_Freescale/TARGET_KLXX/pinmap.c@636:b0d178e9fa10, 2016-07-07 (annotated)

Committer:
lzbpli
Date:
Thu Jul 07 06:48:59 2016 +0000
Revision:
636:b0d178e9fa10
Parent:
227:7bd0639b8911 
l053

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 10:3bc89ef62ce7 1 /* mbed Microcontroller Library
emilmont 10:3bc89ef62ce7 2 * Copyright (c) 2006-2013 ARM Limited
emilmont 10:3bc89ef62ce7 3 *
emilmont 10:3bc89ef62ce7 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 10:3bc89ef62ce7 5 * you may not use this file except in compliance with the License.
emilmont 10:3bc89ef62ce7 6 * You may obtain a copy of the License at
emilmont 10:3bc89ef62ce7 7 *
emilmont 10:3bc89ef62ce7 8 * http://www.apache.org/licenses/LICENSE-2.0
emilmont 10:3bc89ef62ce7 9 *
emilmont 10:3bc89ef62ce7 10 * Unless required by applicable law or agreed to in writing, software
emilmont 10:3bc89ef62ce7 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 10:3bc89ef62ce7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 10:3bc89ef62ce7 13 * See the License for the specific language governing permissions and
emilmont 10:3bc89ef62ce7 14 * limitations under the License.
emilmont 10:3bc89ef62ce7 15 */
mbed_official 227:7bd0639b8911 16 #include "mbed_assert.h"
emilmont 10:3bc89ef62ce7 17 #include "pinmap.h"
emilmont 10:3bc89ef62ce7 18
emilmont 10:3bc89ef62ce7 19 void pin_function(PinName pin, int function) {
mbed_official 227:7bd0639b8911 20 MBED_ASSERT(pin != (PinName)NC);
emilmont 10:3bc89ef62ce7 21
emilmont 10:3bc89ef62ce7 22 uint32_t port_n = (uint32_t)pin >> PORT_SHIFT;
emilmont 10:3bc89ef62ce7 23 uint32_t pin_n = (uint32_t)(pin & 0x7C) >> 2;
emilmont 10:3bc89ef62ce7 24
emilmont 10:3bc89ef62ce7 25 SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port_n);
emilmont 10:3bc89ef62ce7 26 __IO uint32_t* pin_pcr = &(((PORT_Type *)(PORTA_BASE + 0x1000 * port_n)))->PCR[pin_n];
emilmont 10:3bc89ef62ce7 27
emilmont 10:3bc89ef62ce7 28 // pin mux bits: [10:8] -> 11100000000 = (0x700)
emilmont 10:3bc89ef62ce7 29 *pin_pcr = (*pin_pcr & ~0x700) | (function << 8);
emilmont 10:3bc89ef62ce7 30 }
emilmont 10:3bc89ef62ce7 31
emilmont 10:3bc89ef62ce7 32 void pin_mode(PinName pin, PinMode mode) {
mbed_official 227:7bd0639b8911 33 MBED_ASSERT(pin != (PinName)NC);
emilmont 10:3bc89ef62ce7 34
emilmont 10:3bc89ef62ce7 35 __IO uint32_t* pin_pcr = (__IO uint32_t*)(PORTA_BASE + pin);
emilmont 10:3bc89ef62ce7 36
emilmont 10:3bc89ef62ce7 37 // pin pullup bits: [1:0] -> 11 = (0x3)
emilmont 10:3bc89ef62ce7 38 *pin_pcr = (*pin_pcr & ~0x3) | mode;
emilmont 10:3bc89ef62ce7 39 }