MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_Silicon_Labs/TARGET_EFM32/port_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 /***************************************************************************//**
sahilmgandhi 18:6a4db94011d3 2 * @file port_api.c
sahilmgandhi 18:6a4db94011d3 3 *******************************************************************************
sahilmgandhi 18:6a4db94011d3 4 * @section License
sahilmgandhi 18:6a4db94011d3 5 * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
sahilmgandhi 18:6a4db94011d3 6 *******************************************************************************
sahilmgandhi 18:6a4db94011d3 7 *
sahilmgandhi 18:6a4db94011d3 8 * SPDX-License-Identifier: Apache-2.0
sahilmgandhi 18:6a4db94011d3 9 *
sahilmgandhi 18:6a4db94011d3 10 * Licensed under the Apache License, Version 2.0 (the "License"); you may
sahilmgandhi 18:6a4db94011d3 11 * not use this file except in compliance with the License.
sahilmgandhi 18:6a4db94011d3 12 * You may obtain a copy of the License at
sahilmgandhi 18:6a4db94011d3 13 *
sahilmgandhi 18:6a4db94011d3 14 * http://www.apache.org/licenses/LICENSE-2.0
sahilmgandhi 18:6a4db94011d3 15 *
sahilmgandhi 18:6a4db94011d3 16 * Unless required by applicable law or agreed to in writing, software
sahilmgandhi 18:6a4db94011d3 17 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
sahilmgandhi 18:6a4db94011d3 18 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
sahilmgandhi 18:6a4db94011d3 19 * See the License for the specific language governing permissions and
sahilmgandhi 18:6a4db94011d3 20 * limitations under the License.
sahilmgandhi 18:6a4db94011d3 21 *
sahilmgandhi 18:6a4db94011d3 22 ******************************************************************************/
sahilmgandhi 18:6a4db94011d3 23
sahilmgandhi 18:6a4db94011d3 24 #include "device.h"
sahilmgandhi 18:6a4db94011d3 25 #if DEVICE_PORTOUT
sahilmgandhi 18:6a4db94011d3 26
sahilmgandhi 18:6a4db94011d3 27 #include "port_api.h"
sahilmgandhi 18:6a4db94011d3 28 #include "pinmap.h"
sahilmgandhi 18:6a4db94011d3 29 #include "gpio_api.h"
sahilmgandhi 18:6a4db94011d3 30 #include "em_gpio.h"
sahilmgandhi 18:6a4db94011d3 31 #include "em_cmu.h"
sahilmgandhi 18:6a4db94011d3 32
sahilmgandhi 18:6a4db94011d3 33 #define PORT_NUM_PINS 16
sahilmgandhi 18:6a4db94011d3 34
sahilmgandhi 18:6a4db94011d3 35 PinName port_pin(PortName port, int pin_n)
sahilmgandhi 18:6a4db94011d3 36 {
sahilmgandhi 18:6a4db94011d3 37 return (PinName) (pin_n | port << 4); // Encode pin and port number in one uint32
sahilmgandhi 18:6a4db94011d3 38 }
sahilmgandhi 18:6a4db94011d3 39
sahilmgandhi 18:6a4db94011d3 40 void port_init(port_t *obj, PortName port, int mask, PinDirection dir)
sahilmgandhi 18:6a4db94011d3 41 {
sahilmgandhi 18:6a4db94011d3 42 obj->mask = mask;
sahilmgandhi 18:6a4db94011d3 43 obj->port = port;
sahilmgandhi 18:6a4db94011d3 44 obj->dir = dir;
sahilmgandhi 18:6a4db94011d3 45
sahilmgandhi 18:6a4db94011d3 46 port_dir(obj, obj->dir);
sahilmgandhi 18:6a4db94011d3 47 }
sahilmgandhi 18:6a4db94011d3 48
sahilmgandhi 18:6a4db94011d3 49 void port_mode(port_t *obj, PinMode mode)
sahilmgandhi 18:6a4db94011d3 50 {
sahilmgandhi 18:6a4db94011d3 51 /* Set mode for pins given by mask */
sahilmgandhi 18:6a4db94011d3 52 uint32_t pin;
sahilmgandhi 18:6a4db94011d3 53 for (pin = 0; pin < PORT_NUM_PINS; pin++) {
sahilmgandhi 18:6a4db94011d3 54 if (obj->mask & (1 << pin)) {
sahilmgandhi 18:6a4db94011d3 55 pin_mode(port_pin(obj->port, pin), mode);
sahilmgandhi 18:6a4db94011d3 56 }
sahilmgandhi 18:6a4db94011d3 57 }
sahilmgandhi 18:6a4db94011d3 58 }
sahilmgandhi 18:6a4db94011d3 59
sahilmgandhi 18:6a4db94011d3 60 void port_dir(port_t *obj, PinDirection dir)
sahilmgandhi 18:6a4db94011d3 61 {
sahilmgandhi 18:6a4db94011d3 62 obj->dir = dir;
sahilmgandhi 18:6a4db94011d3 63
sahilmgandhi 18:6a4db94011d3 64 /* Set default pin mode for pins given by mask */
sahilmgandhi 18:6a4db94011d3 65 switch (dir) {
sahilmgandhi 18:6a4db94011d3 66 case PIN_INPUT:
sahilmgandhi 18:6a4db94011d3 67 port_mode(obj, Input);
sahilmgandhi 18:6a4db94011d3 68 break;
sahilmgandhi 18:6a4db94011d3 69 case PIN_OUTPUT:
sahilmgandhi 18:6a4db94011d3 70 port_mode(obj, PushPull);
sahilmgandhi 18:6a4db94011d3 71 break;
sahilmgandhi 18:6a4db94011d3 72 }
sahilmgandhi 18:6a4db94011d3 73 }
sahilmgandhi 18:6a4db94011d3 74
sahilmgandhi 18:6a4db94011d3 75 void port_write(port_t *obj, int value)
sahilmgandhi 18:6a4db94011d3 76 {
sahilmgandhi 18:6a4db94011d3 77 GPIO_PortOutSetVal(obj->port, value, obj->mask);
sahilmgandhi 18:6a4db94011d3 78 }
sahilmgandhi 18:6a4db94011d3 79
sahilmgandhi 18:6a4db94011d3 80 int port_read(port_t *obj)
sahilmgandhi 18:6a4db94011d3 81 {
sahilmgandhi 18:6a4db94011d3 82 if (obj->dir == PIN_INPUT) {
sahilmgandhi 18:6a4db94011d3 83 return (int) (GPIO_PortInGet(obj->port) & obj->mask);
sahilmgandhi 18:6a4db94011d3 84 } else {
sahilmgandhi 18:6a4db94011d3 85 return (int) (GPIO_PortOutGet(obj->port) & obj->mask);
sahilmgandhi 18:6a4db94011d3 86 }
sahilmgandhi 18:6a4db94011d3 87 }
sahilmgandhi 18:6a4db94011d3 88
sahilmgandhi 18:6a4db94011d3 89 #endif