mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_LPC/gpio_api.c@181:57724642e740, 2018-02-16 (annotated)

Committer:
AnnaBridge
Date:
Fri Feb 16 16:09:33 2018 +0000
Revision:
181:57724642e740
Parent:
targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/api/gpio_api.c@170:19eb464bc2be 
mbed-dev library. Release version 159.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Kojto 170:19eb464bc2be 1 /* mbed Microcontroller Library
Kojto 170:19eb464bc2be 2 * Copyright (c) 2006-2013 ARM Limited
Kojto 170:19eb464bc2be 3 *
Kojto 170:19eb464bc2be 4 * Licensed under the Apache License, Version 2.0 (the "License");
Kojto 170:19eb464bc2be 5 * you may not use this file except in compliance with the License.
Kojto 170:19eb464bc2be 6 * You may obtain a copy of the License at
Kojto 170:19eb464bc2be 7 *
Kojto 170:19eb464bc2be 8 * http://www.apache.org/licenses/LICENSE-2.0
Kojto 170:19eb464bc2be 9 *
Kojto 170:19eb464bc2be 10 * Unless required by applicable law or agreed to in writing, software
Kojto 170:19eb464bc2be 11 * distributed under the License is distributed on an "AS IS" BASIS,
Kojto 170:19eb464bc2be 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Kojto 170:19eb464bc2be 13 * See the License for the specific language governing permissions and
Kojto 170:19eb464bc2be 14 * limitations under the License.
Kojto 170:19eb464bc2be 15 */
Kojto 170:19eb464bc2be 16 #include "mbed_assert.h"
Kojto 170:19eb464bc2be 17 #include "gpio_api.h"
Kojto 170:19eb464bc2be 18 #include "pinmap.h"
Kojto 170:19eb464bc2be 19 #include "fsl_gpio.h"
Kojto 170:19eb464bc2be 20
Kojto 170:19eb464bc2be 21 uint32_t gpio_set(PinName pin)
Kojto 170:19eb464bc2be 22 {
Kojto 170:19eb464bc2be 23 MBED_ASSERT(pin != (PinName)NC);
Kojto 170:19eb464bc2be 24 pin_function(pin, 0);
Kojto 170:19eb464bc2be 25
Kojto 170:19eb464bc2be 26 return (1 << ((int)pin & 0x1F));
Kojto 170:19eb464bc2be 27 }
Kojto 170:19eb464bc2be 28
Kojto 170:19eb464bc2be 29 void gpio_init(gpio_t *obj, PinName pin)
Kojto 170:19eb464bc2be 30 {
Kojto 170:19eb464bc2be 31 obj->pin = pin;
Kojto 170:19eb464bc2be 32 if (pin == (PinName)NC)
Kojto 170:19eb464bc2be 33 return;
Kojto 170:19eb464bc2be 34
Kojto 170:19eb464bc2be 35 pin_function(pin, 0);
Kojto 170:19eb464bc2be 36 }
Kojto 170:19eb464bc2be 37
Kojto 170:19eb464bc2be 38 void gpio_mode(gpio_t *obj, PinMode mode)
Kojto 170:19eb464bc2be 39 {
Kojto 170:19eb464bc2be 40 pin_mode(obj->pin, mode);
Kojto 170:19eb464bc2be 41 }
Kojto 170:19eb464bc2be 42
Kojto 170:19eb464bc2be 43 void gpio_dir(gpio_t *obj, PinDirection direction)
Kojto 170:19eb464bc2be 44 {
Kojto 170:19eb464bc2be 45 MBED_ASSERT(obj->pin != (PinName)NC);
Kojto 170:19eb464bc2be 46 uint32_t pin_number = obj->pin & 0x1F;
Kojto 170:19eb464bc2be 47 uint8_t port_number = obj->pin / 32;
Kojto 170:19eb464bc2be 48
Kojto 170:19eb464bc2be 49 switch (direction) {
Kojto 170:19eb464bc2be 50 case PIN_INPUT:
Kojto 170:19eb464bc2be 51 GPIO->DIR[port_number] &= ~(1U << pin_number);
Kojto 170:19eb464bc2be 52 break;
Kojto 170:19eb464bc2be 53 case PIN_OUTPUT:
Kojto 170:19eb464bc2be 54 GPIO->DIR[port_number] |= (1U << pin_number);
Kojto 170:19eb464bc2be 55 break;
Kojto 170:19eb464bc2be 56 }
Kojto 170:19eb464bc2be 57 }
Kojto 170:19eb464bc2be 58
Kojto 170:19eb464bc2be 59 void gpio_write(gpio_t *obj, int value)
Kojto 170:19eb464bc2be 60 {
Kojto 170:19eb464bc2be 61 MBED_ASSERT(obj->pin != (PinName)NC);
Kojto 170:19eb464bc2be 62 uint32_t pin_number = obj->pin & 0x1F;
Kojto 170:19eb464bc2be 63 uint8_t port_number = obj->pin / 32;
Kojto 170:19eb464bc2be 64
Kojto 170:19eb464bc2be 65 GPIO_WritePinOutput(GPIO, port_number, pin_number, value);
Kojto 170:19eb464bc2be 66 }
Kojto 170:19eb464bc2be 67
Kojto 170:19eb464bc2be 68 int gpio_read(gpio_t *obj)
Kojto 170:19eb464bc2be 69 {
Kojto 170:19eb464bc2be 70 MBED_ASSERT(obj->pin != (PinName)NC);
Kojto 170:19eb464bc2be 71 uint32_t pin_number = obj->pin & 0x1F;
Kojto 170:19eb464bc2be 72 uint8_t port_number = obj->pin / 32;
Kojto 170:19eb464bc2be 73
Kojto 170:19eb464bc2be 74 return (int)GPIO_ReadPinInput(GPIO, port_number, pin_number);
Kojto 170:19eb464bc2be 75 }