Marek Trojan / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

targets/hal/TARGET_Freescale/TARGET_K20XX/pinmap.c@144:ef7eb2e8f9f7, 2016-09-02 (annotated)

Committer:
<>
Date:
Fri Sep 02 15:07:44 2016 +0100
Revision:
144:ef7eb2e8f9f7
Parent:
0:9b334a45a8ff 
This updates the lib to the mbed lib v125

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2015 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
<> 144:ef7eb2e8f9f7 19 void pin_function(PinName pin, int function) {
<> 144:ef7eb2e8f9f7 20 MBED_ASSERT(pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 21
<> 144:ef7eb2e8f9f7 22 uint32_t port_n = (uint32_t)pin >> PORT_SHIFT;
<> 144:ef7eb2e8f9f7 23 uint32_t pin_n = (uint32_t)(pin & 0x7C) >> 2;
<> 144:ef7eb2e8f9f7 24
<> 144:ef7eb2e8f9f7 25 SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port_n);
<> 144:ef7eb2e8f9f7 26 __IO uint32_t* pin_pcr = &(((PORT_Type *)(PORTA_BASE + 0x1000 * port_n)))->PCR[pin_n];
<> 144:ef7eb2e8f9f7 27
<> 144:ef7eb2e8f9f7 28 // pin mux bits: [10:8] -> 11100000000 = (0x700)
<> 144:ef7eb2e8f9f7 29 *pin_pcr = (*pin_pcr & ~0x700) | (function << 8);
<> 144:ef7eb2e8f9f7 30 }
<> 144:ef7eb2e8f9f7 31
<> 144:ef7eb2e8f9f7 32 void pin_mode(PinName pin, PinMode mode) {
<> 144:ef7eb2e8f9f7 33 MBED_ASSERT(pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 34 __IO uint32_t* pin_pcr = (__IO uint32_t*)(PORTA_BASE + pin);
<> 144:ef7eb2e8f9f7 35
<> 144:ef7eb2e8f9f7 36 // pin pullup bits: [1:0] -> 11 = (0x3)
<> 144:ef7eb2e8f9f7 37 *pin_pcr = (*pin_pcr & ~0x3) | mode;
<> 144:ef7eb2e8f9f7 38 }