MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_Freescale/TARGET_K20XX/pinmap.c@34:69342782fb68, 2017-05-26 (annotated)

Committer:
sahilmgandhi
Date:
Fri May 26 17:21:04 2017 +0000
Revision:
34:69342782fb68
Parent:
18:6a4db94011d3 
Added small reverse turns before the break so that we can stop faster.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sahilmgandhi 18:6a4db94011d3 1 /* mbed Microcontroller Library
sahilmgandhi 18:6a4db94011d3 2 * Copyright (c) 2006-2015 ARM Limited
sahilmgandhi 18:6a4db94011d3 3 *
sahilmgandhi 18:6a4db94011d3 4 * Licensed under the Apache License, Version 2.0 (the "License");
sahilmgandhi 18:6a4db94011d3 5 * you may not use this file except in compliance with the License.
sahilmgandhi 18:6a4db94011d3 6 * You may obtain a copy of the License at
sahilmgandhi 18:6a4db94011d3 7 *
sahilmgandhi 18:6a4db94011d3 8 * http://www.apache.org/licenses/LICENSE-2.0
sahilmgandhi 18:6a4db94011d3 9 *
sahilmgandhi 18:6a4db94011d3 10 * Unless required by applicable law or agreed to in writing, software
sahilmgandhi 18:6a4db94011d3 11 * distributed under the License is distributed on an "AS IS" BASIS,
sahilmgandhi 18:6a4db94011d3 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sahilmgandhi 18:6a4db94011d3 13 * See the License for the specific language governing permissions and
sahilmgandhi 18:6a4db94011d3 14 * limitations under the License.
sahilmgandhi 18:6a4db94011d3 15 */
sahilmgandhi 18:6a4db94011d3 16 #include "mbed_assert.h"
sahilmgandhi 18:6a4db94011d3 17 #include "pinmap.h"
sahilmgandhi 18:6a4db94011d3 18
sahilmgandhi 18:6a4db94011d3 19 void pin_function(PinName pin, int function) {
sahilmgandhi 18:6a4db94011d3 20 MBED_ASSERT(pin != (PinName)NC);
sahilmgandhi 18:6a4db94011d3 21
sahilmgandhi 18:6a4db94011d3 22 uint32_t port_n = (uint32_t)pin >> PORT_SHIFT;
sahilmgandhi 18:6a4db94011d3 23 uint32_t pin_n = (uint32_t)(pin & 0x7C) >> 2;
sahilmgandhi 18:6a4db94011d3 24
sahilmgandhi 18:6a4db94011d3 25 SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port_n);
sahilmgandhi 18:6a4db94011d3 26 __IO uint32_t* pin_pcr = &(((PORT_Type *)(PORTA_BASE + 0x1000 * port_n)))->PCR[pin_n];
sahilmgandhi 18:6a4db94011d3 27
sahilmgandhi 18:6a4db94011d3 28 // pin mux bits: [10:8] -> 11100000000 = (0x700)
sahilmgandhi 18:6a4db94011d3 29 *pin_pcr = (*pin_pcr & ~0x700) | (function << 8);
sahilmgandhi 18:6a4db94011d3 30 }
sahilmgandhi 18:6a4db94011d3 31
sahilmgandhi 18:6a4db94011d3 32 void pin_mode(PinName pin, PinMode mode) {
sahilmgandhi 18:6a4db94011d3 33 MBED_ASSERT(pin != (PinName)NC);
sahilmgandhi 18:6a4db94011d3 34 __IO uint32_t* pin_pcr = (__IO uint32_t*)(PORTA_BASE + pin);
sahilmgandhi 18:6a4db94011d3 35
sahilmgandhi 18:6a4db94011d3 36 // pin pullup bits: [1:0] -> 11 = (0x3)
sahilmgandhi 18:6a4db94011d3 37 *pin_pcr = (*pin_pcr & ~0x3) | mode;
sahilmgandhi 18:6a4db94011d3 38 }