MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_Freescale/TARGET_K20XX/gpio_api.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 "gpio_api.h"
sahilmgandhi 18:6a4db94011d3 18 #include "pinmap.h"
sahilmgandhi 18:6a4db94011d3 19
sahilmgandhi 18:6a4db94011d3 20 uint32_t gpio_set(PinName pin) {
sahilmgandhi 18:6a4db94011d3 21 MBED_ASSERT(pin != (PinName)NC);
sahilmgandhi 18:6a4db94011d3 22 pin_function(pin, 1);
sahilmgandhi 18:6a4db94011d3 23 return 1 << ((pin & 0x7F) >> 2);
sahilmgandhi 18:6a4db94011d3 24 }
sahilmgandhi 18:6a4db94011d3 25
sahilmgandhi 18:6a4db94011d3 26 void gpio_init(gpio_t *obj, PinName pin) {
sahilmgandhi 18:6a4db94011d3 27 obj->pin = pin;
sahilmgandhi 18:6a4db94011d3 28 if (pin == (PinName)NC)
sahilmgandhi 18:6a4db94011d3 29 return;
sahilmgandhi 18:6a4db94011d3 30
sahilmgandhi 18:6a4db94011d3 31 obj->mask = gpio_set(pin);
sahilmgandhi 18:6a4db94011d3 32
sahilmgandhi 18:6a4db94011d3 33 unsigned int port = (unsigned int)pin >> PORT_SHIFT;
sahilmgandhi 18:6a4db94011d3 34
sahilmgandhi 18:6a4db94011d3 35 GPIO_Type *reg = (GPIO_Type *)(PTA_BASE + port * 0x40);
sahilmgandhi 18:6a4db94011d3 36 obj->reg_set = &reg->PSOR;
sahilmgandhi 18:6a4db94011d3 37 obj->reg_clr = &reg->PCOR;
sahilmgandhi 18:6a4db94011d3 38 obj->reg_in = &reg->PDIR;
sahilmgandhi 18:6a4db94011d3 39 obj->reg_dir = &reg->PDDR;
sahilmgandhi 18:6a4db94011d3 40 }
sahilmgandhi 18:6a4db94011d3 41
sahilmgandhi 18:6a4db94011d3 42 void gpio_mode(gpio_t *obj, PinMode mode) {
sahilmgandhi 18:6a4db94011d3 43 pin_mode(obj->pin, mode);
sahilmgandhi 18:6a4db94011d3 44 }
sahilmgandhi 18:6a4db94011d3 45
sahilmgandhi 18:6a4db94011d3 46 void gpio_dir(gpio_t *obj, PinDirection direction) {
sahilmgandhi 18:6a4db94011d3 47 MBED_ASSERT(obj->pin != (PinName)NC);
sahilmgandhi 18:6a4db94011d3 48 switch (direction) {
sahilmgandhi 18:6a4db94011d3 49 case PIN_INPUT :
sahilmgandhi 18:6a4db94011d3 50 *obj->reg_dir &= ~obj->mask;
sahilmgandhi 18:6a4db94011d3 51 break;
sahilmgandhi 18:6a4db94011d3 52 case PIN_OUTPUT:
sahilmgandhi 18:6a4db94011d3 53 *obj->reg_dir |= obj->mask;
sahilmgandhi 18:6a4db94011d3 54 break;
sahilmgandhi 18:6a4db94011d3 55 }
sahilmgandhi 18:6a4db94011d3 56 }