Amit Gandhi / sensen_copy_2

t

Fork of mbed-dev by mbed official

targets/TARGET_STM/gpio_object.h@178:c26431f84b0d, 2017-11-09 (annotated)

Committer:
amithy
Date:
Thu Nov 09 22:14:37 2017 +0000
Revision:
178:c26431f84b0d
Parent:
157:ff67d9f36b67
Child:
160:d5399cc887bb
test export

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
<> 157:ff67d9f36b67 46 * if BRR does not exist, family shall define GPIO_DOES_NOT_HAVE_BRR
<> 157:ff67d9f36b67 47 */
<> 157:ff67d9f36b67 48 typedef struct {
<> 157:ff67d9f36b67 49 PinName pin;
<> 157:ff67d9f36b67 50 uint32_t mask;
<> 157:ff67d9f36b67 51 __IO uint32_t *reg_in;
<> 157:ff67d9f36b67 52 __IO uint32_t *reg_set;
<> 157:ff67d9f36b67 53 __IO uint32_t *reg_clr;
<> 157:ff67d9f36b67 54 } gpio_t;
<> 157:ff67d9f36b67 55
<> 157:ff67d9f36b67 56 static inline void gpio_write(gpio_t *obj, int value)
<> 157:ff67d9f36b67 57 {
<> 157:ff67d9f36b67 58 MBED_ASSERT(obj->pin != (PinName)NC);
<> 157:ff67d9f36b67 59 if (value) {
<> 157:ff67d9f36b67 60 *obj->reg_set = obj->mask;
<> 157:ff67d9f36b67 61 } else {
<> 157:ff67d9f36b67 62 #ifdef GPIO_IP_WITHOUT_BRR
<> 157:ff67d9f36b67 63 *obj->reg_clr = obj->mask << 16;
<> 157:ff67d9f36b67 64 #else
<> 157:ff67d9f36b67 65 *obj->reg_clr = obj->mask;
<> 157:ff67d9f36b67 66 #endif
<> 157:ff67d9f36b67 67 }
<> 157:ff67d9f36b67 68 }
<> 157:ff67d9f36b67 69
<> 157:ff67d9f36b67 70 static inline int gpio_read(gpio_t *obj)
<> 157:ff67d9f36b67 71 {
<> 157:ff67d9f36b67 72 MBED_ASSERT(obj->pin != (PinName)NC);
<> 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
<> 157:ff67d9f36b67 81 #ifdef __cplusplus
<> 157:ff67d9f36b67 82 }
<> 157:ff67d9f36b67 83 #endif
<> 157:ff67d9f36b67 84
<> 157:ff67d9f36b67 85 #endif