ON Semiconductor / mbed-os

5.2.1 - Updated I2C files

Dependents:   mbed-TFT-example-NCS36510 mbed-Accelerometer-example-NCS36510 mbed-Accelerometer-example-NCS36510

targets/TARGET_NXP/TARGET_LPC82X/gpio_api.c@0:098463de4c5d, 2017-01-25 (annotated)

Committer:
group-onsemi
Date:
Wed Jan 25 20:34:15 2017 +0000
Revision:
0:098463de4c5d
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
group-onsemi 0:098463de4c5d 1 /* mbed Microcontroller Library
group-onsemi 0:098463de4c5d 2 * Copyright (c) 2006-2013 ARM Limited
group-onsemi 0:098463de4c5d 3 *
group-onsemi 0:098463de4c5d 4 * Licensed under the Apache License, Version 2.0 (the "License");
group-onsemi 0:098463de4c5d 5 * you may not use this file except in compliance with the License.
group-onsemi 0:098463de4c5d 6 * You may obtain a copy of the License at
group-onsemi 0:098463de4c5d 7 *
group-onsemi 0:098463de4c5d 8 * http://www.apache.org/licenses/LICENSE-2.0
group-onsemi 0:098463de4c5d 9 *
group-onsemi 0:098463de4c5d 10 * Unless required by applicable law or agreed to in writing, software
group-onsemi 0:098463de4c5d 11 * distributed under the License is distributed on an "AS IS" BASIS,
group-onsemi 0:098463de4c5d 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
group-onsemi 0:098463de4c5d 13 * See the License for the specific language governing permissions and
group-onsemi 0:098463de4c5d 14 * limitations under the License.
group-onsemi 0:098463de4c5d 15 */
group-onsemi 0:098463de4c5d 16 #include "mbed_assert.h"
group-onsemi 0:098463de4c5d 17 #include "gpio_api.h"
group-onsemi 0:098463de4c5d 18 #include "pinmap.h"
group-onsemi 0:098463de4c5d 19
group-onsemi 0:098463de4c5d 20 static int gpio_enabled = 0;
group-onsemi 0:098463de4c5d 21
group-onsemi 0:098463de4c5d 22 static void gpio_enable(void)
group-onsemi 0:098463de4c5d 23 {
group-onsemi 0:098463de4c5d 24 gpio_enabled = 1;
group-onsemi 0:098463de4c5d 25
group-onsemi 0:098463de4c5d 26 /* Enable AHB clock to the GPIO domain. */
group-onsemi 0:098463de4c5d 27 LPC_SYSCON->SYSAHBCLKCTRL |= (1 << 6);
group-onsemi 0:098463de4c5d 28
group-onsemi 0:098463de4c5d 29 /* Peripheral reset control to GPIO and GPIO INT, a "1" bring it out of reset. */
group-onsemi 0:098463de4c5d 30 LPC_SYSCON->PRESETCTRL &= ~(1 << 10);
group-onsemi 0:098463de4c5d 31 LPC_SYSCON->PRESETCTRL |= (1 << 10);
group-onsemi 0:098463de4c5d 32 }
group-onsemi 0:098463de4c5d 33
group-onsemi 0:098463de4c5d 34 uint32_t gpio_set(PinName pin)
group-onsemi 0:098463de4c5d 35 {
group-onsemi 0:098463de4c5d 36 if (!gpio_enabled)
group-onsemi 0:098463de4c5d 37 gpio_enable();
group-onsemi 0:098463de4c5d 38
group-onsemi 0:098463de4c5d 39 return (1 << ((int)pin >> PIN_SHIFT));
group-onsemi 0:098463de4c5d 40 }
group-onsemi 0:098463de4c5d 41
group-onsemi 0:098463de4c5d 42 void gpio_init(gpio_t *obj, PinName pin)
group-onsemi 0:098463de4c5d 43 {
group-onsemi 0:098463de4c5d 44 obj->pin = pin;
group-onsemi 0:098463de4c5d 45 if (pin == (PinName)NC)
group-onsemi 0:098463de4c5d 46 return;
group-onsemi 0:098463de4c5d 47
group-onsemi 0:098463de4c5d 48 obj->mask = gpio_set(pin);
group-onsemi 0:098463de4c5d 49
group-onsemi 0:098463de4c5d 50 obj->reg_set = &LPC_GPIO_PORT->SET0;
group-onsemi 0:098463de4c5d 51 obj->reg_clr = &LPC_GPIO_PORT->CLR0;
group-onsemi 0:098463de4c5d 52 obj->reg_in = &LPC_GPIO_PORT->PIN0;
group-onsemi 0:098463de4c5d 53 obj->reg_dir = &LPC_GPIO_PORT->DIR0;
group-onsemi 0:098463de4c5d 54 }
group-onsemi 0:098463de4c5d 55
group-onsemi 0:098463de4c5d 56 void gpio_mode(gpio_t *obj, PinMode mode)
group-onsemi 0:098463de4c5d 57 {
group-onsemi 0:098463de4c5d 58 pin_mode(obj->pin, mode);
group-onsemi 0:098463de4c5d 59 }
group-onsemi 0:098463de4c5d 60
group-onsemi 0:098463de4c5d 61 void gpio_dir(gpio_t *obj, PinDirection direction)
group-onsemi 0:098463de4c5d 62 {
group-onsemi 0:098463de4c5d 63 MBED_ASSERT(obj->pin != (PinName)NC);
group-onsemi 0:098463de4c5d 64 switch (direction) {
group-onsemi 0:098463de4c5d 65 case PIN_INPUT :
group-onsemi 0:098463de4c5d 66 *obj->reg_dir &= ~obj->mask;
group-onsemi 0:098463de4c5d 67 break;
group-onsemi 0:098463de4c5d 68 case PIN_OUTPUT:
group-onsemi 0:098463de4c5d 69 *obj->reg_dir |= obj->mask;
group-onsemi 0:098463de4c5d 70 break;
group-onsemi 0:098463de4c5d 71 }
group-onsemi 0:098463de4c5d 72 }