Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

hal/gpio_api.h@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
144:ef7eb2e8f9f7 
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #ifndef MBED_GPIO_API_H
<> 144:ef7eb2e8f9f7 17 #define MBED_GPIO_API_H
<> 144:ef7eb2e8f9f7 18
<> 144:ef7eb2e8f9f7 19 #include <stdint.h>
<> 144:ef7eb2e8f9f7 20 #include "device.h"
<> 144:ef7eb2e8f9f7 21
<> 144:ef7eb2e8f9f7 22 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 23 extern "C" {
<> 144:ef7eb2e8f9f7 24 #endif
<> 144:ef7eb2e8f9f7 25
<> 144:ef7eb2e8f9f7 26 /**
<> 144:ef7eb2e8f9f7 27 * \defgroup hal_gpio GPIO HAL functions
<> 144:ef7eb2e8f9f7 28 * @{
<> 144:ef7eb2e8f9f7 29 */
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 /** Set the given pin as GPIO
<> 144:ef7eb2e8f9f7 32 *
<> 144:ef7eb2e8f9f7 33 * @param pin The pin to be set as GPIO
<> 144:ef7eb2e8f9f7 34 * @return The GPIO port mask for this pin
<> 144:ef7eb2e8f9f7 35 **/
<> 144:ef7eb2e8f9f7 36 uint32_t gpio_set(PinName pin);
<> 144:ef7eb2e8f9f7 37 /* Checks if gpio object is connected (pin was not initialized with NC)
<> 144:ef7eb2e8f9f7 38 * @param pin The pin to be set as GPIO
<> 144:ef7eb2e8f9f7 39 * @return 0 if port is initialized with NC
<> 144:ef7eb2e8f9f7 40 **/
<> 144:ef7eb2e8f9f7 41 int gpio_is_connected(const gpio_t *obj);
<> 144:ef7eb2e8f9f7 42
<> 144:ef7eb2e8f9f7 43 /** Initialize the GPIO pin
<> 144:ef7eb2e8f9f7 44 *
<> 144:ef7eb2e8f9f7 45 * @param obj The GPIO object to initialize
<> 144:ef7eb2e8f9f7 46 * @param pin The GPIO pin to initialize
<> 144:ef7eb2e8f9f7 47 */
<> 144:ef7eb2e8f9f7 48 void gpio_init(gpio_t *obj, PinName pin);
<> 144:ef7eb2e8f9f7 49
<> 144:ef7eb2e8f9f7 50 /** Set the input pin mode
<> 144:ef7eb2e8f9f7 51 *
<> 144:ef7eb2e8f9f7 52 * @param obj The GPIO object
<> 144:ef7eb2e8f9f7 53 * @param mode The pin mode to be set
<> 144:ef7eb2e8f9f7 54 */
<> 144:ef7eb2e8f9f7 55 void gpio_mode(gpio_t *obj, PinMode mode);
<> 144:ef7eb2e8f9f7 56
<> 144:ef7eb2e8f9f7 57 /** Set the pin direction
<> 144:ef7eb2e8f9f7 58 *
<> 144:ef7eb2e8f9f7 59 * @param obj The GPIO object
<> 144:ef7eb2e8f9f7 60 * @param direction The pin direction to be set
<> 144:ef7eb2e8f9f7 61 */
<> 144:ef7eb2e8f9f7 62 void gpio_dir(gpio_t *obj, PinDirection direction);
<> 144:ef7eb2e8f9f7 63
<> 144:ef7eb2e8f9f7 64 /** Set the output value
<> 144:ef7eb2e8f9f7 65 *
<> 144:ef7eb2e8f9f7 66 * @param obj The GPIO object
<> 144:ef7eb2e8f9f7 67 * @param value The value to be set
<> 144:ef7eb2e8f9f7 68 */
<> 144:ef7eb2e8f9f7 69 void gpio_write(gpio_t *obj, int value);
<> 144:ef7eb2e8f9f7 70
<> 144:ef7eb2e8f9f7 71 /** Read the input value
<> 144:ef7eb2e8f9f7 72 *
<> 144:ef7eb2e8f9f7 73 * @param obj The GPIO object
<> 144:ef7eb2e8f9f7 74 * @return An integer value 1 or 0
<> 144:ef7eb2e8f9f7 75 */
<> 144:ef7eb2e8f9f7 76 int gpio_read(gpio_t *obj);
<> 144:ef7eb2e8f9f7 77
<> 144:ef7eb2e8f9f7 78 // the following functions are generic and implemented in the common gpio.c file
<> 144:ef7eb2e8f9f7 79 // TODO: fix, will be moved to the common gpio header file
<> 144:ef7eb2e8f9f7 80
<> 144:ef7eb2e8f9f7 81 /** Init the input pin and set mode to PullDefault
<> 144:ef7eb2e8f9f7 82 *
<> 144:ef7eb2e8f9f7 83 * @param obj The GPIO object
<> 144:ef7eb2e8f9f7 84 * @param pin The pin name
<> 144:ef7eb2e8f9f7 85 */
<> 144:ef7eb2e8f9f7 86 void gpio_init_in(gpio_t* gpio, PinName pin);
<> 144:ef7eb2e8f9f7 87
<> 144:ef7eb2e8f9f7 88 /** Init the input pin and set the mode
<> 144:ef7eb2e8f9f7 89 *
<> 144:ef7eb2e8f9f7 90 * @param obj The GPIO object
<> 144:ef7eb2e8f9f7 91 * @param pin The pin name
<> 144:ef7eb2e8f9f7 92 * @param mode The pin mode to be set
<> 144:ef7eb2e8f9f7 93 */
<> 144:ef7eb2e8f9f7 94 void gpio_init_in_ex(gpio_t* gpio, PinName pin, PinMode mode);
<> 144:ef7eb2e8f9f7 95
<> 144:ef7eb2e8f9f7 96 /** Init the output pin as an output, with predefined output value 0
<> 144:ef7eb2e8f9f7 97 *
<> 144:ef7eb2e8f9f7 98 * @param obj The GPIO object
<> 144:ef7eb2e8f9f7 99 * @param pin The pin name
<> 144:ef7eb2e8f9f7 100 * @return An integer value 1 or 0
<> 144:ef7eb2e8f9f7 101 */
<> 144:ef7eb2e8f9f7 102 void gpio_init_out(gpio_t* gpio, PinName pin);
<> 144:ef7eb2e8f9f7 103
<> 144:ef7eb2e8f9f7 104 /** Init the pin as an output and set the output value
<> 144:ef7eb2e8f9f7 105 *
<> 144:ef7eb2e8f9f7 106 * @param obj The GPIO object
<> 144:ef7eb2e8f9f7 107 * @param pin The pin name
<> 144:ef7eb2e8f9f7 108 * @param value The value to be set
<> 144:ef7eb2e8f9f7 109 */
<> 144:ef7eb2e8f9f7 110 void gpio_init_out_ex(gpio_t* gpio, PinName pin, int value);
<> 144:ef7eb2e8f9f7 111
<> 144:ef7eb2e8f9f7 112 /** Init the pin to be in/out
<> 144:ef7eb2e8f9f7 113 *
<> 144:ef7eb2e8f9f7 114 * @param obj The GPIO object
<> 144:ef7eb2e8f9f7 115 * @param pin The pin name
<> 144:ef7eb2e8f9f7 116 * @param direction The pin direction to be set
<> 144:ef7eb2e8f9f7 117 * @param mode The pin mode to be set
<> 144:ef7eb2e8f9f7 118 * @param value The value to be set for an output pin
<> 144:ef7eb2e8f9f7 119 */
<> 144:ef7eb2e8f9f7 120 void gpio_init_inout(gpio_t* gpio, PinName pin, PinDirection direction, PinMode mode, int value);
<> 144:ef7eb2e8f9f7 121
<> 144:ef7eb2e8f9f7 122 /**@}*/
<> 144:ef7eb2e8f9f7 123
<> 144:ef7eb2e8f9f7 124 #ifdef __cplusplus
<> 144:ef7eb2e8f9f7 125 }
<> 144:ef7eb2e8f9f7 126 #endif
<> 144:ef7eb2e8f9f7 127
<> 144:ef7eb2e8f9f7 128 #endif