John Karatka / mbed

mbed

Fork of mbed-dev by mbed official

targets/TARGET_STM/gpio_object.h@182:57724642e740, 2018-02-16 (annotated)

Committer:
AnnaBridge
Date:
Fri Feb 16 16:09:33 2018 +0000
Revision:
182:57724642e740
Parent:
160:d5399cc887bb 
mbed-dev library. Release version 159.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 157:ff67d9f36b67 1 /* mbed Microcontroller Library
<> 157:ff67d9f36b67 2 *******************************************************************************
<> 157:ff67d9f36b67 3 * Copyright (c) 2016, STMicroelectronics
<> 157:ff67d9f36b67 4 * All rights reserved.
<> 157:ff67d9f36b67 5 *
<> 157:ff67d9f36b67 6 * Redistribution and use in source and binary forms, with or without
<> 157:ff67d9f36b67 7 * modification, are permitted provided that the following conditions are met:
<> 157:ff67d9f36b67 8 *
<> 157:ff67d9f36b67 9 * 1. Redistributions of source code must retain the above copyright notice,
<> 157:ff67d9f36b67 10 * this list of conditions and the following disclaimer.
<> 157:ff67d9f36b67 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
<> 157:ff67d9f36b67 12 * this list of conditions and the following disclaimer in the documentation
<> 157:ff67d9f36b67 13 * and/or other materials provided with the distribution.
<> 157:ff67d9f36b67 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
<> 157:ff67d9f36b67 15 * may be used to endorse or promote products derived from this software
<> 157:ff67d9f36b67 16 * without specific prior written permission.
<> 157:ff67d9f36b67 17 *
<> 157:ff67d9f36b67 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
<> 157:ff67d9f36b67 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
<> 157:ff67d9f36b67 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
<> 157:ff67d9f36b67 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
<> 157:ff67d9f36b67 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
<> 157:ff67d9f36b67 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
<> 157:ff67d9f36b67 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
<> 157:ff67d9f36b67 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
<> 157:ff67d9f36b67 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<> 157:ff67d9f36b67 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
<> 157:ff67d9f36b67 28 *******************************************************************************
<> 157:ff67d9f36b67 29 */
<> 157:ff67d9f36b67 30 #ifndef MBED_GPIO_OBJECT_H
<> 157:ff67d9f36b67 31 #define MBED_GPIO_OBJECT_H
<> 157:ff67d9f36b67 32
<> 157:ff67d9f36b67 33 #include "mbed_assert.h"
<> 157:ff67d9f36b67 34 #include "cmsis.h"
<> 157:ff67d9f36b67 35 #include "PortNames.h"
<> 157:ff67d9f36b67 36 #include "PeripheralNames.h"
<> 157:ff67d9f36b67 37 #include "PinNames.h"
<> 157:ff67d9f36b67 38
<> 157:ff67d9f36b67 39 #ifdef __cplusplus
<> 157:ff67d9f36b67 40 extern "C" {
<> 157:ff67d9f36b67 41 #endif
<> 157:ff67d9f36b67 42
<> 157:ff67d9f36b67 43 /*
<> 157:ff67d9f36b67 44 * Note: reg_clr might actually be same as reg_set.
<> 157:ff67d9f36b67 45 * Depends on family whether BRR is available on top of BSRR
<> 160:d5399cc887bb 46 * if BRR does not exist, family shall define GPIO_IP_WITHOUT_BRR
<> 157:ff67d9f36b67 47 */
<> 157:ff67d9f36b67 48 typedef struct {
<> 157:ff67d9f36b67 49 uint32_t mask;
<> 157:ff67d9f36b67 50 __IO uint32_t *reg_in;
<> 157:ff67d9f36b67 51 __IO uint32_t *reg_set;
<> 157:ff67d9f36b67 52 __IO uint32_t *reg_clr;
<> 160:d5399cc887bb 53 PinName pin;
<> 160:d5399cc887bb 54 GPIO_TypeDef *gpio;
<> 160:d5399cc887bb 55 uint32_t ll_pin;
<> 157:ff67d9f36b67 56 } gpio_t;
<> 157:ff67d9f36b67 57
<> 157:ff67d9f36b67 58 static inline void gpio_write(gpio_t *obj, int value)
<> 157:ff67d9f36b67 59 {
<> 157:ff67d9f36b67 60 if (value) {
<> 157:ff67d9f36b67 61 *obj->reg_set = obj->mask;
<> 157:ff67d9f36b67 62 } else {
<> 157:ff67d9f36b67 63 #ifdef GPIO_IP_WITHOUT_BRR
<> 157:ff67d9f36b67 64 *obj->reg_clr = obj->mask << 16;
<> 157:ff67d9f36b67 65 #else
<> 157:ff67d9f36b67 66 *obj->reg_clr = obj->mask;
<> 157:ff67d9f36b67 67 #endif
<> 157:ff67d9f36b67 68 }
<> 157:ff67d9f36b67 69 }
<> 157:ff67d9f36b67 70
<> 157:ff67d9f36b67 71 static inline int gpio_read(gpio_t *obj)
<> 157:ff67d9f36b67 72 {
<> 157:ff67d9f36b67 73 return ((*obj->reg_in & obj->mask) ? 1 : 0);
<> 157:ff67d9f36b67 74 }
<> 157:ff67d9f36b67 75
<> 157:ff67d9f36b67 76 static inline int gpio_is_connected(const gpio_t *obj)
<> 157:ff67d9f36b67 77 {
<> 157:ff67d9f36b67 78 return obj->pin != (PinName)NC;
<> 157:ff67d9f36b67 79 }
<> 157:ff67d9f36b67 80
<> 160:d5399cc887bb 81
<> 157:ff67d9f36b67 82 #ifdef __cplusplus
<> 157:ff67d9f36b67 83 }
<> 157:ff67d9f36b67 84 #endif
<> 157:ff67d9f36b67 85
<> 157:ff67d9f36b67 86 #endif