MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_ARM_SSG/TARGET_BEETLE/gpio_api.c@18:6a4db94011d3, 2017-05-14 (annotated)

Committer:
sahilmgandhi
Date:
Sun May 14 23:18:57 2017 +0000
Revision:
18:6a4db94011d3
Publishing again

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sahilmgandhi 18:6a4db94011d3 1 /* mbed Microcontroller Library
sahilmgandhi 18:6a4db94011d3 2 * Copyright (c) 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 "gpio_api.h"
sahilmgandhi 18:6a4db94011d3 17 #include "pinmap.h"
sahilmgandhi 18:6a4db94011d3 18
sahilmgandhi 18:6a4db94011d3 19 // function to enable the GPIO pin
sahilmgandhi 18:6a4db94011d3 20 uint32_t gpio_set(PinName pin) {
sahilmgandhi 18:6a4db94011d3 21 uint32_t pin_value = 0;
sahilmgandhi 18:6a4db94011d3 22
sahilmgandhi 18:6a4db94011d3 23 if(pin <= 15) {
sahilmgandhi 18:6a4db94011d3 24 pin_value = pin;
sahilmgandhi 18:6a4db94011d3 25 } else if (pin >= 16 && pin <= 31) {
sahilmgandhi 18:6a4db94011d3 26 pin_value = pin-16;
sahilmgandhi 18:6a4db94011d3 27 } else if (pin >= 1001 && pin <= 1004) {
sahilmgandhi 18:6a4db94011d3 28 /* Emulated LEDs */
sahilmgandhi 18:6a4db94011d3 29 return (1);
sahilmgandhi 18:6a4db94011d3 30 }
sahilmgandhi 18:6a4db94011d3 31
sahilmgandhi 18:6a4db94011d3 32 pin_function(pin, 0);
sahilmgandhi 18:6a4db94011d3 33
sahilmgandhi 18:6a4db94011d3 34 return (1 << pin_value);
sahilmgandhi 18:6a4db94011d3 35 }
sahilmgandhi 18:6a4db94011d3 36
sahilmgandhi 18:6a4db94011d3 37 //function to initialise the gpio pin
sahilmgandhi 18:6a4db94011d3 38 // this links the board control bits for each pin
sahilmgandhi 18:6a4db94011d3 39 // with the object created for the pin
sahilmgandhi 18:6a4db94011d3 40 void gpio_init(gpio_t *obj, PinName pin) {
sahilmgandhi 18:6a4db94011d3 41 if (pin == NC) {
sahilmgandhi 18:6a4db94011d3 42 return;
sahilmgandhi 18:6a4db94011d3 43 } else {
sahilmgandhi 18:6a4db94011d3 44 int pin_value = 0;
sahilmgandhi 18:6a4db94011d3 45 obj->pin = pin;
sahilmgandhi 18:6a4db94011d3 46 if (pin <=15) {
sahilmgandhi 18:6a4db94011d3 47 pin_value = pin;
sahilmgandhi 18:6a4db94011d3 48 } else if (pin >= 16 && pin <= 31) {
sahilmgandhi 18:6a4db94011d3 49 pin_value = pin-16;
sahilmgandhi 18:6a4db94011d3 50 } else if (pin >= 1001 && pin <= 1004) {
sahilmgandhi 18:6a4db94011d3 51 /* Emulated LEDs */
sahilmgandhi 18:6a4db94011d3 52 return;
sahilmgandhi 18:6a4db94011d3 53 }
sahilmgandhi 18:6a4db94011d3 54
sahilmgandhi 18:6a4db94011d3 55 obj->mask = 0x1 << pin_value;
sahilmgandhi 18:6a4db94011d3 56 obj->pin_number = pin;
sahilmgandhi 18:6a4db94011d3 57 if (pin <=15) {
sahilmgandhi 18:6a4db94011d3 58 obj->reg_data = &CMSDK_GPIO0->DATAOUT;
sahilmgandhi 18:6a4db94011d3 59 obj->reg_in = &CMSDK_GPIO0->DATA;
sahilmgandhi 18:6a4db94011d3 60 obj->reg_dir = &CMSDK_GPIO0->OUTENABLESET;
sahilmgandhi 18:6a4db94011d3 61 obj->reg_dirclr = &CMSDK_GPIO0->OUTENABLECLR;
sahilmgandhi 18:6a4db94011d3 62 } else if (pin >= 16 && pin <= 31) {
sahilmgandhi 18:6a4db94011d3 63 obj->reg_data = &CMSDK_GPIO1->DATAOUT;
sahilmgandhi 18:6a4db94011d3 64 obj->reg_in = &CMSDK_GPIO1->DATA;
sahilmgandhi 18:6a4db94011d3 65 obj->reg_dir = &CMSDK_GPIO1->OUTENABLESET;
sahilmgandhi 18:6a4db94011d3 66 obj->reg_dirclr = &CMSDK_GPIO1->OUTENABLECLR;
sahilmgandhi 18:6a4db94011d3 67 }
sahilmgandhi 18:6a4db94011d3 68 }
sahilmgandhi 18:6a4db94011d3 69 }
sahilmgandhi 18:6a4db94011d3 70
sahilmgandhi 18:6a4db94011d3 71 void gpio_mode(gpio_t *obj, PinMode mode) {
sahilmgandhi 18:6a4db94011d3 72 pin_mode(obj->pin, mode);
sahilmgandhi 18:6a4db94011d3 73 }
sahilmgandhi 18:6a4db94011d3 74
sahilmgandhi 18:6a4db94011d3 75 void gpio_dir(gpio_t *obj, PinDirection direction) {
sahilmgandhi 18:6a4db94011d3 76 if(obj->pin >= 0 && obj->pin <= 31) {
sahilmgandhi 18:6a4db94011d3 77 switch (direction) {
sahilmgandhi 18:6a4db94011d3 78 case PIN_INPUT : *obj->reg_dirclr = obj->mask; break;
sahilmgandhi 18:6a4db94011d3 79 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
sahilmgandhi 18:6a4db94011d3 80 }
sahilmgandhi 18:6a4db94011d3 81 } else {
sahilmgandhi 18:6a4db94011d3 82 return;
sahilmgandhi 18:6a4db94011d3 83 }
sahilmgandhi 18:6a4db94011d3 84 }
sahilmgandhi 18:6a4db94011d3 85
sahilmgandhi 18:6a4db94011d3 86 int gpio_is_connected(const gpio_t *obj){
sahilmgandhi 18:6a4db94011d3 87 if(obj->pin != (PinName)NC){
sahilmgandhi 18:6a4db94011d3 88 return 1;
sahilmgandhi 18:6a4db94011d3 89 } else {
sahilmgandhi 18:6a4db94011d3 90 return 0;
sahilmgandhi 18:6a4db94011d3 91 }
sahilmgandhi 18:6a4db94011d3 92 }