EL4121 Embedded System / mbed-os

mbed-os

Dependents:   cobaLCDJoyMotor_Thread odometry_omni_3roda_v3 odometry_omni_3roda_v1 odometry_omni_3roda_v2 ... more

targets/TARGET_STM/gpio_object.h@0:b74591d5ab33, 2017-12-11 (annotated)

Committer:
be_bryan
Date:
Mon Dec 11 17:54:04 2017 +0000
Revision:
0:b74591d5ab33
motor ++

Who changed what in which revision?

UserRevisionLine numberNew contents of line
be_bryan 0:b74591d5ab33 1 /* mbed Microcontroller Library
be_bryan 0:b74591d5ab33 2 *******************************************************************************
be_bryan 0:b74591d5ab33 3 * Copyright (c) 2016, STMicroelectronics
be_bryan 0:b74591d5ab33 4 * All rights reserved.
be_bryan 0:b74591d5ab33 5 *
be_bryan 0:b74591d5ab33 6 * Redistribution and use in source and binary forms, with or without
be_bryan 0:b74591d5ab33 7 * modification, are permitted provided that the following conditions are met:
be_bryan 0:b74591d5ab33 8 *
be_bryan 0:b74591d5ab33 9 * 1. Redistributions of source code must retain the above copyright notice,
be_bryan 0:b74591d5ab33 10 * this list of conditions and the following disclaimer.
be_bryan 0:b74591d5ab33 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
be_bryan 0:b74591d5ab33 12 * this list of conditions and the following disclaimer in the documentation
be_bryan 0:b74591d5ab33 13 * and/or other materials provided with the distribution.
be_bryan 0:b74591d5ab33 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
be_bryan 0:b74591d5ab33 15 * may be used to endorse or promote products derived from this software
be_bryan 0:b74591d5ab33 16 * without specific prior written permission.
be_bryan 0:b74591d5ab33 17 *
be_bryan 0:b74591d5ab33 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
be_bryan 0:b74591d5ab33 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
be_bryan 0:b74591d5ab33 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
be_bryan 0:b74591d5ab33 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
be_bryan 0:b74591d5ab33 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
be_bryan 0:b74591d5ab33 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
be_bryan 0:b74591d5ab33 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
be_bryan 0:b74591d5ab33 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
be_bryan 0:b74591d5ab33 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
be_bryan 0:b74591d5ab33 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
be_bryan 0:b74591d5ab33 28 *******************************************************************************
be_bryan 0:b74591d5ab33 29 */
be_bryan 0:b74591d5ab33 30 #ifndef MBED_GPIO_OBJECT_H
be_bryan 0:b74591d5ab33 31 #define MBED_GPIO_OBJECT_H
be_bryan 0:b74591d5ab33 32
be_bryan 0:b74591d5ab33 33 #include "mbed_assert.h"
be_bryan 0:b74591d5ab33 34 #include "cmsis.h"
be_bryan 0:b74591d5ab33 35 #include "PortNames.h"
be_bryan 0:b74591d5ab33 36 #include "PeripheralNames.h"
be_bryan 0:b74591d5ab33 37 #include "PinNames.h"
be_bryan 0:b74591d5ab33 38
be_bryan 0:b74591d5ab33 39 #ifdef __cplusplus
be_bryan 0:b74591d5ab33 40 extern "C" {
be_bryan 0:b74591d5ab33 41 #endif
be_bryan 0:b74591d5ab33 42
be_bryan 0:b74591d5ab33 43 /*
be_bryan 0:b74591d5ab33 44 * Note: reg_clr might actually be same as reg_set.
be_bryan 0:b74591d5ab33 45 * Depends on family whether BRR is available on top of BSRR
be_bryan 0:b74591d5ab33 46 * if BRR does not exist, family shall define GPIO_IP_WITHOUT_BRR
be_bryan 0:b74591d5ab33 47 */
be_bryan 0:b74591d5ab33 48 typedef struct {
be_bryan 0:b74591d5ab33 49 uint32_t mask;
be_bryan 0:b74591d5ab33 50 __IO uint32_t *reg_in;
be_bryan 0:b74591d5ab33 51 __IO uint32_t *reg_set;
be_bryan 0:b74591d5ab33 52 __IO uint32_t *reg_clr;
be_bryan 0:b74591d5ab33 53 PinName pin;
be_bryan 0:b74591d5ab33 54 GPIO_TypeDef *gpio;
be_bryan 0:b74591d5ab33 55 uint32_t ll_pin;
be_bryan 0:b74591d5ab33 56 } gpio_t;
be_bryan 0:b74591d5ab33 57
be_bryan 0:b74591d5ab33 58 static inline void gpio_write(gpio_t *obj, int value)
be_bryan 0:b74591d5ab33 59 {
be_bryan 0:b74591d5ab33 60 if (value) {
be_bryan 0:b74591d5ab33 61 *obj->reg_set = obj->mask;
be_bryan 0:b74591d5ab33 62 } else {
be_bryan 0:b74591d5ab33 63 #ifdef GPIO_IP_WITHOUT_BRR
be_bryan 0:b74591d5ab33 64 *obj->reg_clr = obj->mask << 16;
be_bryan 0:b74591d5ab33 65 #else
be_bryan 0:b74591d5ab33 66 *obj->reg_clr = obj->mask;
be_bryan 0:b74591d5ab33 67 #endif
be_bryan 0:b74591d5ab33 68 }
be_bryan 0:b74591d5ab33 69 }
be_bryan 0:b74591d5ab33 70
be_bryan 0:b74591d5ab33 71 static inline int gpio_read(gpio_t *obj)
be_bryan 0:b74591d5ab33 72 {
be_bryan 0:b74591d5ab33 73 return ((*obj->reg_in & obj->mask) ? 1 : 0);
be_bryan 0:b74591d5ab33 74 }
be_bryan 0:b74591d5ab33 75
be_bryan 0:b74591d5ab33 76 static inline int gpio_is_connected(const gpio_t *obj)
be_bryan 0:b74591d5ab33 77 {
be_bryan 0:b74591d5ab33 78 return obj->pin != (PinName)NC;
be_bryan 0:b74591d5ab33 79 }
be_bryan 0:b74591d5ab33 80
be_bryan 0:b74591d5ab33 81
be_bryan 0:b74591d5ab33 82 #ifdef __cplusplus
be_bryan 0:b74591d5ab33 83 }
be_bryan 0:b74591d5ab33 84 #endif
be_bryan 0:b74591d5ab33 85
be_bryan 0:b74591d5ab33 86 #endif