MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_Atmel/TARGET_SAM_CortexM0P/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) 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 "PinNames.h"
sahilmgandhi 18:6a4db94011d3 18 #include "gpio_object.h"
sahilmgandhi 18:6a4db94011d3 19 #include "gpio_api.h"
sahilmgandhi 18:6a4db94011d3 20 #include "compiler.h"
sahilmgandhi 18:6a4db94011d3 21 #include "port.h"
sahilmgandhi 18:6a4db94011d3 22
sahilmgandhi 18:6a4db94011d3 23 uint32_t gpio_set(PinName pin)
sahilmgandhi 18:6a4db94011d3 24 {
sahilmgandhi 18:6a4db94011d3 25 MBED_ASSERT(pin != (PinName)NC);
sahilmgandhi 18:6a4db94011d3 26 return (1UL << (pin % 32));
sahilmgandhi 18:6a4db94011d3 27 }
sahilmgandhi 18:6a4db94011d3 28
sahilmgandhi 18:6a4db94011d3 29 void gpio_init(gpio_t *obj, PinName pin)
sahilmgandhi 18:6a4db94011d3 30 {
sahilmgandhi 18:6a4db94011d3 31 MBED_ASSERT(pin != (PinName)NC);
sahilmgandhi 18:6a4db94011d3 32 struct port_config pin_conf;
sahilmgandhi 18:6a4db94011d3 33 PortGroup *const port_base = (PortGroup*)port_get_group_from_gpio_pin(pin);
sahilmgandhi 18:6a4db94011d3 34
sahilmgandhi 18:6a4db94011d3 35 obj->pin = pin;
sahilmgandhi 18:6a4db94011d3 36 if (pin == (PinName)NC)
sahilmgandhi 18:6a4db94011d3 37 return;
sahilmgandhi 18:6a4db94011d3 38
sahilmgandhi 18:6a4db94011d3 39 obj->mask = gpio_set(pin);
sahilmgandhi 18:6a4db94011d3 40 port_get_config_defaults(&pin_conf);
sahilmgandhi 18:6a4db94011d3 41 obj->powersave = pin_conf.powersave;
sahilmgandhi 18:6a4db94011d3 42 obj->direction = PORT_PIN_DIR_INPUT;
sahilmgandhi 18:6a4db94011d3 43 obj->mode = PORT_PIN_PULL_UP;
sahilmgandhi 18:6a4db94011d3 44 port_pin_set_config(pin, &pin_conf);
sahilmgandhi 18:6a4db94011d3 45
sahilmgandhi 18:6a4db94011d3 46 obj->OUTCLR = &port_base->OUTCLR.reg;
sahilmgandhi 18:6a4db94011d3 47 obj->OUTSET = &port_base->OUTSET.reg;
sahilmgandhi 18:6a4db94011d3 48 obj->IN = &port_base->IN.reg;
sahilmgandhi 18:6a4db94011d3 49 obj->OUT = &port_base->OUT.reg;
sahilmgandhi 18:6a4db94011d3 50 }
sahilmgandhi 18:6a4db94011d3 51
sahilmgandhi 18:6a4db94011d3 52 void gpio_mode(gpio_t *obj, PinMode mode)
sahilmgandhi 18:6a4db94011d3 53 {
sahilmgandhi 18:6a4db94011d3 54 MBED_ASSERT(obj->pin != (PinName)NC);
sahilmgandhi 18:6a4db94011d3 55 struct port_config pin_conf;
sahilmgandhi 18:6a4db94011d3 56
sahilmgandhi 18:6a4db94011d3 57 obj->mode = mode;
sahilmgandhi 18:6a4db94011d3 58 pin_conf.direction = (enum port_pin_dir)obj->direction;
sahilmgandhi 18:6a4db94011d3 59 pin_conf.powersave = obj->powersave;
sahilmgandhi 18:6a4db94011d3 60 switch (mode) {
sahilmgandhi 18:6a4db94011d3 61 case PullNone :
sahilmgandhi 18:6a4db94011d3 62 pin_conf.input_pull = PORT_PIN_PULL_NONE;
sahilmgandhi 18:6a4db94011d3 63 break;
sahilmgandhi 18:6a4db94011d3 64 case PullUp:
sahilmgandhi 18:6a4db94011d3 65 pin_conf.input_pull = PORT_PIN_PULL_UP;
sahilmgandhi 18:6a4db94011d3 66 break;
sahilmgandhi 18:6a4db94011d3 67 case PullDown:
sahilmgandhi 18:6a4db94011d3 68 pin_conf.input_pull = PORT_PIN_PULL_DOWN;
sahilmgandhi 18:6a4db94011d3 69 break;
sahilmgandhi 18:6a4db94011d3 70 }
sahilmgandhi 18:6a4db94011d3 71 port_pin_set_config(obj->pin, &pin_conf);
sahilmgandhi 18:6a4db94011d3 72 }
sahilmgandhi 18:6a4db94011d3 73
sahilmgandhi 18:6a4db94011d3 74 void gpio_dir(gpio_t *obj, PinDirection direction)
sahilmgandhi 18:6a4db94011d3 75 {
sahilmgandhi 18:6a4db94011d3 76 MBED_ASSERT(obj->pin != (PinName)NC);
sahilmgandhi 18:6a4db94011d3 77 struct port_config pin_conf;
sahilmgandhi 18:6a4db94011d3 78 obj->direction = direction;
sahilmgandhi 18:6a4db94011d3 79 pin_conf.input_pull = (enum port_pin_pull)obj->mode;
sahilmgandhi 18:6a4db94011d3 80 pin_conf.powersave = obj->powersave;
sahilmgandhi 18:6a4db94011d3 81 switch (direction) {
sahilmgandhi 18:6a4db94011d3 82 case PIN_INPUT :
sahilmgandhi 18:6a4db94011d3 83 pin_conf.direction = PORT_PIN_DIR_INPUT;
sahilmgandhi 18:6a4db94011d3 84 break;
sahilmgandhi 18:6a4db94011d3 85 case PIN_OUTPUT:
sahilmgandhi 18:6a4db94011d3 86 pin_conf.direction = PORT_PIN_DIR_OUTPUT;
sahilmgandhi 18:6a4db94011d3 87 break;
sahilmgandhi 18:6a4db94011d3 88 case PIN_INPUT_OUTPUT:
sahilmgandhi 18:6a4db94011d3 89 pin_conf.direction = PORT_PIN_DIR_OUTPUT_WTH_READBACK;
sahilmgandhi 18:6a4db94011d3 90 break;
sahilmgandhi 18:6a4db94011d3 91 }
sahilmgandhi 18:6a4db94011d3 92 port_pin_set_config(obj->pin, &pin_conf);
sahilmgandhi 18:6a4db94011d3 93 }