Elijah Stanger-Jones / mbed-dev-f303

test

targets/TARGET_STM/gpio_object.h@1:8a094db1347f, 2020-11-09 (annotated)

Committer:
elijahsj
Date:
Mon Nov 09 00:02:47 2020 -0500
Revision:
1:8a094db1347f
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elijahsj 1:8a094db1347f 1 /* mbed Microcontroller Library
elijahsj 1:8a094db1347f 2 *******************************************************************************
elijahsj 1:8a094db1347f 3 * Copyright (c) 2016, STMicroelectronics
elijahsj 1:8a094db1347f 4 * All rights reserved.
elijahsj 1:8a094db1347f 5 *
elijahsj 1:8a094db1347f 6 * Redistribution and use in source and binary forms, with or without
elijahsj 1:8a094db1347f 7 * modification, are permitted provided that the following conditions are met:
elijahsj 1:8a094db1347f 8 *
elijahsj 1:8a094db1347f 9 * 1. Redistributions of source code must retain the above copyright notice,
elijahsj 1:8a094db1347f 10 * this list of conditions and the following disclaimer.
elijahsj 1:8a094db1347f 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
elijahsj 1:8a094db1347f 12 * this list of conditions and the following disclaimer in the documentation
elijahsj 1:8a094db1347f 13 * and/or other materials provided with the distribution.
elijahsj 1:8a094db1347f 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
elijahsj 1:8a094db1347f 15 * may be used to endorse or promote products derived from this software
elijahsj 1:8a094db1347f 16 * without specific prior written permission.
elijahsj 1:8a094db1347f 17 *
elijahsj 1:8a094db1347f 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
elijahsj 1:8a094db1347f 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
elijahsj 1:8a094db1347f 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
elijahsj 1:8a094db1347f 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
elijahsj 1:8a094db1347f 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
elijahsj 1:8a094db1347f 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
elijahsj 1:8a094db1347f 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
elijahsj 1:8a094db1347f 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
elijahsj 1:8a094db1347f 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
elijahsj 1:8a094db1347f 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
elijahsj 1:8a094db1347f 28 *******************************************************************************
elijahsj 1:8a094db1347f 29 */
elijahsj 1:8a094db1347f 30 #ifndef MBED_GPIO_OBJECT_H
elijahsj 1:8a094db1347f 31 #define MBED_GPIO_OBJECT_H
elijahsj 1:8a094db1347f 32
elijahsj 1:8a094db1347f 33 #include "mbed_assert.h"
elijahsj 1:8a094db1347f 34 #include "cmsis.h"
elijahsj 1:8a094db1347f 35 #include "PortNames.h"
elijahsj 1:8a094db1347f 36 #include "PeripheralNames.h"
elijahsj 1:8a094db1347f 37 #include "PinNames.h"
elijahsj 1:8a094db1347f 38
elijahsj 1:8a094db1347f 39 #ifdef __cplusplus
elijahsj 1:8a094db1347f 40 extern "C" {
elijahsj 1:8a094db1347f 41 #endif
elijahsj 1:8a094db1347f 42
elijahsj 1:8a094db1347f 43 /*
elijahsj 1:8a094db1347f 44 * Note: reg_clr might actually be same as reg_set.
elijahsj 1:8a094db1347f 45 * Depends on family whether BRR is available on top of BSRR
elijahsj 1:8a094db1347f 46 * if BRR does not exist, family shall define GPIO_IP_WITHOUT_BRR
elijahsj 1:8a094db1347f 47 */
elijahsj 1:8a094db1347f 48 typedef struct {
elijahsj 1:8a094db1347f 49 uint32_t mask;
elijahsj 1:8a094db1347f 50 __IO uint32_t *reg_in;
elijahsj 1:8a094db1347f 51 __IO uint32_t *reg_set;
elijahsj 1:8a094db1347f 52 __IO uint32_t *reg_clr;
elijahsj 1:8a094db1347f 53 PinName pin;
elijahsj 1:8a094db1347f 54 GPIO_TypeDef *gpio;
elijahsj 1:8a094db1347f 55 uint32_t ll_pin;
elijahsj 1:8a094db1347f 56 } gpio_t;
elijahsj 1:8a094db1347f 57
elijahsj 1:8a094db1347f 58 static inline void gpio_write(gpio_t *obj, int value)
elijahsj 1:8a094db1347f 59 {
elijahsj 1:8a094db1347f 60 if (value) {
elijahsj 1:8a094db1347f 61 *obj->reg_set = obj->mask;
elijahsj 1:8a094db1347f 62 } else {
elijahsj 1:8a094db1347f 63 #ifdef GPIO_IP_WITHOUT_BRR
elijahsj 1:8a094db1347f 64 *obj->reg_clr = obj->mask << 16;
elijahsj 1:8a094db1347f 65 #else
elijahsj 1:8a094db1347f 66 *obj->reg_clr = obj->mask;
elijahsj 1:8a094db1347f 67 #endif
elijahsj 1:8a094db1347f 68 }
elijahsj 1:8a094db1347f 69 }
elijahsj 1:8a094db1347f 70
elijahsj 1:8a094db1347f 71 static inline int gpio_read(gpio_t *obj)
elijahsj 1:8a094db1347f 72 {
elijahsj 1:8a094db1347f 73 return ((*obj->reg_in & obj->mask) ? 1 : 0);
elijahsj 1:8a094db1347f 74 }
elijahsj 1:8a094db1347f 75
elijahsj 1:8a094db1347f 76 static inline int gpio_is_connected(const gpio_t *obj)
elijahsj 1:8a094db1347f 77 {
elijahsj 1:8a094db1347f 78 return obj->pin != (PinName)NC;
elijahsj 1:8a094db1347f 79 }
elijahsj 1:8a094db1347f 80
elijahsj 1:8a094db1347f 81
elijahsj 1:8a094db1347f 82 #ifdef __cplusplus
elijahsj 1:8a094db1347f 83 }
elijahsj 1:8a094db1347f 84 #endif
elijahsj 1:8a094db1347f 85
elijahsj 1:8a094db1347f 86 #endif