MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_NXP/TARGET_LPC11XX_11CXX/gpio_api.c@46:b156ef445742, 2017-06-03 (annotated)

Committer:
sahilmgandhi
Date:
Sat Jun 03 00:22:44 2017 +0000
Revision:
46:b156ef445742
Parent:
18:6a4db94011d3 
Final code for internal battlebot competition.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sahilmgandhi 18:6a4db94011d3 1 /* mbed Microcontroller Library
sahilmgandhi 18:6a4db94011d3 2 * Copyright (c) 2006-2013 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 #include "reserved_pins.h"
sahilmgandhi 18:6a4db94011d3 20
sahilmgandhi 18:6a4db94011d3 21 static const PinName reserved_pins[] = TARGET_RESERVED_PINS;
sahilmgandhi 18:6a4db94011d3 22
sahilmgandhi 18:6a4db94011d3 23 uint32_t gpio_set(PinName pin) {
sahilmgandhi 18:6a4db94011d3 24 MBED_ASSERT(pin != (PinName)NC);
sahilmgandhi 18:6a4db94011d3 25 // PIO default value of following ports are not same as others
sahilmgandhi 18:6a4db94011d3 26 unsigned i;
sahilmgandhi 18:6a4db94011d3 27 int f = 0;
sahilmgandhi 18:6a4db94011d3 28
sahilmgandhi 18:6a4db94011d3 29 for (i = 0; i < sizeof(reserved_pins) / sizeof(PinName); i ++) {
sahilmgandhi 18:6a4db94011d3 30 if (pin == reserved_pins[i]) {
sahilmgandhi 18:6a4db94011d3 31 f = 1;
sahilmgandhi 18:6a4db94011d3 32 break;
sahilmgandhi 18:6a4db94011d3 33 }
sahilmgandhi 18:6a4db94011d3 34 }
sahilmgandhi 18:6a4db94011d3 35 pin_function(pin, f);
sahilmgandhi 18:6a4db94011d3 36 return ((pin & 0x0F00) >> 8);
sahilmgandhi 18:6a4db94011d3 37 }
sahilmgandhi 18:6a4db94011d3 38
sahilmgandhi 18:6a4db94011d3 39 void gpio_init(gpio_t *obj, PinName pin) {
sahilmgandhi 18:6a4db94011d3 40 obj->pin = pin;
sahilmgandhi 18:6a4db94011d3 41 if (pin == (PinName)NC)
sahilmgandhi 18:6a4db94011d3 42 return;
sahilmgandhi 18:6a4db94011d3 43
sahilmgandhi 18:6a4db94011d3 44 LPC_GPIO_TypeDef *port_reg = ((LPC_GPIO_TypeDef *) (LPC_GPIO0_BASE + (((pin & 0xF000) >> PORT_SHIFT) * 0x10000)));
sahilmgandhi 18:6a4db94011d3 45
sahilmgandhi 18:6a4db94011d3 46 obj->reg_mask_read = &port_reg->MASKED_ACCESS[1 << gpio_set(pin)];
sahilmgandhi 18:6a4db94011d3 47 obj->reg_dir = &port_reg->DIR;
sahilmgandhi 18:6a4db94011d3 48 obj->reg_write = &port_reg->DATA;
sahilmgandhi 18:6a4db94011d3 49 }
sahilmgandhi 18:6a4db94011d3 50
sahilmgandhi 18:6a4db94011d3 51 void gpio_mode(gpio_t *obj, PinMode mode) {
sahilmgandhi 18:6a4db94011d3 52 pin_mode(obj->pin, mode);
sahilmgandhi 18:6a4db94011d3 53 }
sahilmgandhi 18:6a4db94011d3 54
sahilmgandhi 18:6a4db94011d3 55 void gpio_dir(gpio_t *obj, PinDirection direction) {
sahilmgandhi 18:6a4db94011d3 56 MBED_ASSERT(obj->pin != (PinName)NC);
sahilmgandhi 18:6a4db94011d3 57 int pin_number = ((obj->pin & 0x0F00) >> 8);
sahilmgandhi 18:6a4db94011d3 58 switch (direction) {
sahilmgandhi 18:6a4db94011d3 59 case PIN_INPUT :
sahilmgandhi 18:6a4db94011d3 60 *obj->reg_dir &= ~(1 << pin_number);
sahilmgandhi 18:6a4db94011d3 61 break;
sahilmgandhi 18:6a4db94011d3 62 case PIN_OUTPUT:
sahilmgandhi 18:6a4db94011d3 63 *obj->reg_dir |= (1 << pin_number);
sahilmgandhi 18:6a4db94011d3 64 break;
sahilmgandhi 18:6a4db94011d3 65 }
sahilmgandhi 18:6a4db94011d3 66 }