Hiroh Satoh / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   keyboard

Fork of mbed-dev by mbed official

targets/hal/TARGET_Freescale/TARGET_K20XX/pinmap.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2015 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #include "mbed_assert.h"
bogdanm 0:9b334a45a8ff 17 #include "pinmap.h"
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 void pin_function(PinName pin, int function) {
bogdanm 0:9b334a45a8ff 20 MBED_ASSERT(pin != (PinName)NC);
bogdanm 0:9b334a45a8ff 21
bogdanm 0:9b334a45a8ff 22 uint32_t port_n = (uint32_t)pin >> PORT_SHIFT;
bogdanm 0:9b334a45a8ff 23 uint32_t pin_n = (uint32_t)(pin & 0x7C) >> 2;
bogdanm 0:9b334a45a8ff 24
bogdanm 0:9b334a45a8ff 25 SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port_n);
bogdanm 0:9b334a45a8ff 26 __IO uint32_t* pin_pcr = &(((PORT_Type *)(PORTA_BASE + 0x1000 * port_n)))->PCR[pin_n];
bogdanm 0:9b334a45a8ff 27
bogdanm 0:9b334a45a8ff 28 // pin mux bits: [10:8] -> 11100000000 = (0x700)
bogdanm 0:9b334a45a8ff 29 *pin_pcr = (*pin_pcr & ~0x700) | (function << 8);
bogdanm 0:9b334a45a8ff 30 }
bogdanm 0:9b334a45a8ff 31
bogdanm 0:9b334a45a8ff 32 void pin_mode(PinName pin, PinMode mode) {
bogdanm 0:9b334a45a8ff 33 MBED_ASSERT(pin != (PinName)NC);
bogdanm 0:9b334a45a8ff 34 __IO uint32_t* pin_pcr = (__IO uint32_t*)(PORTA_BASE + pin);
bogdanm 0:9b334a45a8ff 35
bogdanm 0:9b334a45a8ff 36 // pin pullup bits: [1:0] -> 11 = (0x3)
bogdanm 0:9b334a45a8ff 37 *pin_pcr = (*pin_pcr & ~0x3) | mode;
bogdanm 0:9b334a45a8ff 38 }