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targets/hal/TARGET_Freescale/TARGET_KL46Z/pinmap.c@35:db417d6d0a5c, 2013-10-16 (annotated)

Committer:
vsluiter
Date:
Wed Oct 16 07:57:27 2013 +0000
Revision:
35:db417d6d0a5c
Parent:
31:42176bc3c368 
Changed startup_MKL25Z4.s

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 31:42176bc3c368 1 /* mbed Microcontroller Library
mbed_official 31:42176bc3c368 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 31:42176bc3c368 3 *
mbed_official 31:42176bc3c368 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 31:42176bc3c368 5 * you may not use this file except in compliance with the License.
mbed_official 31:42176bc3c368 6 * You may obtain a copy of the License at
mbed_official 31:42176bc3c368 7 *
mbed_official 31:42176bc3c368 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 31:42176bc3c368 9 *
mbed_official 31:42176bc3c368 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 31:42176bc3c368 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 31:42176bc3c368 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 31:42176bc3c368 13 * See the License for the specific language governing permissions and
mbed_official 31:42176bc3c368 14 * limitations under the License.
mbed_official 31:42176bc3c368 15 */
mbed_official 31:42176bc3c368 16 #include "pinmap.h"
mbed_official 31:42176bc3c368 17 #include "error.h"
mbed_official 31:42176bc3c368 18
mbed_official 31:42176bc3c368 19 void pin_function(PinName pin, int function) {
mbed_official 31:42176bc3c368 20 if (pin == (PinName)NC) return;
mbed_official 31:42176bc3c368 21
mbed_official 31:42176bc3c368 22 uint32_t port_n = (uint32_t)pin >> PORT_SHIFT;
mbed_official 31:42176bc3c368 23 uint32_t pin_n = (uint32_t)(pin & 0x7C) >> 2;
mbed_official 31:42176bc3c368 24
mbed_official 31:42176bc3c368 25 SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port_n);
mbed_official 31:42176bc3c368 26 __IO uint32_t* pin_pcr = &(((PORT_Type *)(PORTA_BASE + 0x1000 * port_n)))->PCR[pin_n];
mbed_official 31:42176bc3c368 27
mbed_official 31:42176bc3c368 28 // pin mux bits: [10:8] -> 11100000000 = (0x700)
mbed_official 31:42176bc3c368 29 *pin_pcr = (*pin_pcr & ~0x700) | (function << 8);
mbed_official 31:42176bc3c368 30 }
mbed_official 31:42176bc3c368 31
mbed_official 31:42176bc3c368 32 void pin_mode(PinName pin, PinMode mode) {
mbed_official 31:42176bc3c368 33 if (pin == (PinName)NC) { return; }
mbed_official 31:42176bc3c368 34
mbed_official 31:42176bc3c368 35 __IO uint32_t* pin_pcr = (__IO uint32_t*)(PORTA_BASE + pin);
mbed_official 31:42176bc3c368 36
mbed_official 31:42176bc3c368 37 // pin pullup bits: [1:0] -> 11 = (0x3)
mbed_official 31:42176bc3c368 38 *pin_pcr = (*pin_pcr & ~0x3) | mode;
mbed_official 31:42176bc3c368 39 }