Takaaki Numai / mbed-dev

inport from local

Dependents:   Hobbyking_Cheetah_0511

targets/TARGET_STM/gpio_api.c@0:85b3fd62ea1a, 2020-03-16 (annotated)

Committer:
NYX
Date:
Mon Mar 16 06:35:48 2020 +0000
Revision:
0:85b3fd62ea1a
reinport to mbed;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
NYX 0:85b3fd62ea1a 1 /* mbed Microcontroller Library
NYX 0:85b3fd62ea1a 2 *******************************************************************************
NYX 0:85b3fd62ea1a 3 * Copyright (c) 2015, STMicroelectronics
NYX 0:85b3fd62ea1a 4 * All rights reserved.
NYX 0:85b3fd62ea1a 5 *
NYX 0:85b3fd62ea1a 6 * Redistribution and use in source and binary forms, with or without
NYX 0:85b3fd62ea1a 7 * modification, are permitted provided that the following conditions are met:
NYX 0:85b3fd62ea1a 8 *
NYX 0:85b3fd62ea1a 9 * 1. Redistributions of source code must retain the above copyright notice,
NYX 0:85b3fd62ea1a 10 * this list of conditions and the following disclaimer.
NYX 0:85b3fd62ea1a 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
NYX 0:85b3fd62ea1a 12 * this list of conditions and the following disclaimer in the documentation
NYX 0:85b3fd62ea1a 13 * and/or other materials provided with the distribution.
NYX 0:85b3fd62ea1a 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
NYX 0:85b3fd62ea1a 15 * may be used to endorse or promote products derived from this software
NYX 0:85b3fd62ea1a 16 * without specific prior written permission.
NYX 0:85b3fd62ea1a 17 *
NYX 0:85b3fd62ea1a 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
NYX 0:85b3fd62ea1a 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
NYX 0:85b3fd62ea1a 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
NYX 0:85b3fd62ea1a 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
NYX 0:85b3fd62ea1a 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
NYX 0:85b3fd62ea1a 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
NYX 0:85b3fd62ea1a 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
NYX 0:85b3fd62ea1a 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
NYX 0:85b3fd62ea1a 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
NYX 0:85b3fd62ea1a 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
NYX 0:85b3fd62ea1a 28 *******************************************************************************
NYX 0:85b3fd62ea1a 29 */
NYX 0:85b3fd62ea1a 30 #include "mbed_assert.h"
NYX 0:85b3fd62ea1a 31 #include "gpio_api.h"
NYX 0:85b3fd62ea1a 32 #include "pinmap.h"
NYX 0:85b3fd62ea1a 33 #include "mbed_error.h"
NYX 0:85b3fd62ea1a 34 #include "pin_device.h"
NYX 0:85b3fd62ea1a 35
NYX 0:85b3fd62ea1a 36 extern const uint32_t ll_pin_defines[16];
NYX 0:85b3fd62ea1a 37
NYX 0:85b3fd62ea1a 38 // Enable GPIO clock and return GPIO base address
NYX 0:85b3fd62ea1a 39 GPIO_TypeDef *Set_GPIO_Clock(uint32_t port_idx) {
NYX 0:85b3fd62ea1a 40 uint32_t gpio_add = 0;
NYX 0:85b3fd62ea1a 41 switch (port_idx) {
NYX 0:85b3fd62ea1a 42 case PortA:
NYX 0:85b3fd62ea1a 43 gpio_add = GPIOA_BASE;
NYX 0:85b3fd62ea1a 44 __HAL_RCC_GPIOA_CLK_ENABLE();
NYX 0:85b3fd62ea1a 45 break;
NYX 0:85b3fd62ea1a 46 case PortB:
NYX 0:85b3fd62ea1a 47 gpio_add = GPIOB_BASE;
NYX 0:85b3fd62ea1a 48 __HAL_RCC_GPIOB_CLK_ENABLE();
NYX 0:85b3fd62ea1a 49 break;
NYX 0:85b3fd62ea1a 50 #if defined(GPIOC_BASE)
NYX 0:85b3fd62ea1a 51 case PortC:
NYX 0:85b3fd62ea1a 52 gpio_add = GPIOC_BASE;
NYX 0:85b3fd62ea1a 53 __HAL_RCC_GPIOC_CLK_ENABLE();
NYX 0:85b3fd62ea1a 54 break;
NYX 0:85b3fd62ea1a 55 #endif
NYX 0:85b3fd62ea1a 56 #if defined GPIOD_BASE
NYX 0:85b3fd62ea1a 57 case PortD:
NYX 0:85b3fd62ea1a 58 gpio_add = GPIOD_BASE;
NYX 0:85b3fd62ea1a 59 __HAL_RCC_GPIOD_CLK_ENABLE();
NYX 0:85b3fd62ea1a 60 break;
NYX 0:85b3fd62ea1a 61 #endif
NYX 0:85b3fd62ea1a 62 #if defined GPIOE_BASE
NYX 0:85b3fd62ea1a 63 case PortE:
NYX 0:85b3fd62ea1a 64 gpio_add = GPIOE_BASE;
NYX 0:85b3fd62ea1a 65 __HAL_RCC_GPIOE_CLK_ENABLE();
NYX 0:85b3fd62ea1a 66 break;
NYX 0:85b3fd62ea1a 67 #endif
NYX 0:85b3fd62ea1a 68 #if defined GPIOF_BASE
NYX 0:85b3fd62ea1a 69 case PortF:
NYX 0:85b3fd62ea1a 70 gpio_add = GPIOF_BASE;
NYX 0:85b3fd62ea1a 71 __HAL_RCC_GPIOF_CLK_ENABLE();
NYX 0:85b3fd62ea1a 72 break;
NYX 0:85b3fd62ea1a 73 #endif
NYX 0:85b3fd62ea1a 74 #if defined GPIOG_BASE
NYX 0:85b3fd62ea1a 75 case PortG:
NYX 0:85b3fd62ea1a 76 #if defined TARGET_STM32L4
NYX 0:85b3fd62ea1a 77 __HAL_RCC_PWR_CLK_ENABLE();
NYX 0:85b3fd62ea1a 78 HAL_PWREx_EnableVddIO2();
NYX 0:85b3fd62ea1a 79 #endif
NYX 0:85b3fd62ea1a 80 gpio_add = GPIOG_BASE;
NYX 0:85b3fd62ea1a 81 __HAL_RCC_GPIOG_CLK_ENABLE();
NYX 0:85b3fd62ea1a 82 break;
NYX 0:85b3fd62ea1a 83 #endif
NYX 0:85b3fd62ea1a 84 #if defined GPIOH_BASE
NYX 0:85b3fd62ea1a 85 case PortH:
NYX 0:85b3fd62ea1a 86 gpio_add = GPIOH_BASE;
NYX 0:85b3fd62ea1a 87 __HAL_RCC_GPIOH_CLK_ENABLE();
NYX 0:85b3fd62ea1a 88 break;
NYX 0:85b3fd62ea1a 89 #endif
NYX 0:85b3fd62ea1a 90 #if defined GPIOI_BASE
NYX 0:85b3fd62ea1a 91 case PortI:
NYX 0:85b3fd62ea1a 92 gpio_add = GPIOI_BASE;
NYX 0:85b3fd62ea1a 93 __HAL_RCC_GPIOI_CLK_ENABLE();
NYX 0:85b3fd62ea1a 94 break;
NYX 0:85b3fd62ea1a 95 #endif
NYX 0:85b3fd62ea1a 96 #if defined GPIOJ_BASE
NYX 0:85b3fd62ea1a 97 case PortJ:
NYX 0:85b3fd62ea1a 98 gpio_add = GPIOJ_BASE;
NYX 0:85b3fd62ea1a 99 __HAL_RCC_GPIOJ_CLK_ENABLE();
NYX 0:85b3fd62ea1a 100 break;
NYX 0:85b3fd62ea1a 101 #endif
NYX 0:85b3fd62ea1a 102 #if defined GPIOK_BASE
NYX 0:85b3fd62ea1a 103 case PortK:
NYX 0:85b3fd62ea1a 104 gpio_add = GPIOK_BASE;
NYX 0:85b3fd62ea1a 105 __HAL_RCC_GPIOK_CLK_ENABLE();
NYX 0:85b3fd62ea1a 106 break;
NYX 0:85b3fd62ea1a 107 #endif
NYX 0:85b3fd62ea1a 108 default:
NYX 0:85b3fd62ea1a 109 error("Pinmap error: wrong port number.");
NYX 0:85b3fd62ea1a 110 break;
NYX 0:85b3fd62ea1a 111 }
NYX 0:85b3fd62ea1a 112 return (GPIO_TypeDef *) gpio_add;
NYX 0:85b3fd62ea1a 113 }
NYX 0:85b3fd62ea1a 114
NYX 0:85b3fd62ea1a 115 uint32_t gpio_set(PinName pin) {
NYX 0:85b3fd62ea1a 116 MBED_ASSERT(pin != (PinName)NC);
NYX 0:85b3fd62ea1a 117
NYX 0:85b3fd62ea1a 118 pin_function(pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
NYX 0:85b3fd62ea1a 119
NYX 0:85b3fd62ea1a 120 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
NYX 0:85b3fd62ea1a 121 }
NYX 0:85b3fd62ea1a 122
NYX 0:85b3fd62ea1a 123
NYX 0:85b3fd62ea1a 124 void gpio_init(gpio_t *obj, PinName pin) {
NYX 0:85b3fd62ea1a 125 obj->pin = pin;
NYX 0:85b3fd62ea1a 126 if (pin == (PinName)NC) {
NYX 0:85b3fd62ea1a 127 return;
NYX 0:85b3fd62ea1a 128 }
NYX 0:85b3fd62ea1a 129
NYX 0:85b3fd62ea1a 130 uint32_t port_index = STM_PORT(pin);
NYX 0:85b3fd62ea1a 131
NYX 0:85b3fd62ea1a 132 // Enable GPIO clock
NYX 0:85b3fd62ea1a 133 GPIO_TypeDef *gpio = Set_GPIO_Clock(port_index);
NYX 0:85b3fd62ea1a 134
NYX 0:85b3fd62ea1a 135 // Fill GPIO object structure for future use
NYX 0:85b3fd62ea1a 136 obj->mask = gpio_set(pin);
NYX 0:85b3fd62ea1a 137 obj->gpio = gpio;
NYX 0:85b3fd62ea1a 138 obj->ll_pin = ll_pin_defines[STM_PIN(obj->pin)];
NYX 0:85b3fd62ea1a 139 obj->reg_in = &gpio->IDR;
NYX 0:85b3fd62ea1a 140 obj->reg_set = &gpio->BSRR;
NYX 0:85b3fd62ea1a 141 #ifdef GPIO_IP_WITHOUT_BRR
NYX 0:85b3fd62ea1a 142 obj->reg_clr = &gpio->BSRR;
NYX 0:85b3fd62ea1a 143 #else
NYX 0:85b3fd62ea1a 144 obj->reg_clr = &gpio->BRR;
NYX 0:85b3fd62ea1a 145 #endif
NYX 0:85b3fd62ea1a 146 }
NYX 0:85b3fd62ea1a 147
NYX 0:85b3fd62ea1a 148 void gpio_mode(gpio_t *obj, PinMode mode) {
NYX 0:85b3fd62ea1a 149 pin_mode(obj->pin, mode);
NYX 0:85b3fd62ea1a 150 }
NYX 0:85b3fd62ea1a 151
NYX 0:85b3fd62ea1a 152 inline void gpio_dir(gpio_t *obj, PinDirection direction) {
NYX 0:85b3fd62ea1a 153 if (direction == PIN_INPUT) {
NYX 0:85b3fd62ea1a 154 LL_GPIO_SetPinMode(obj->gpio, obj->ll_pin, LL_GPIO_MODE_INPUT);
NYX 0:85b3fd62ea1a 155 } else {
NYX 0:85b3fd62ea1a 156 LL_GPIO_SetPinMode(obj->gpio, obj->ll_pin, LL_GPIO_MODE_OUTPUT);
NYX 0:85b3fd62ea1a 157 }
NYX 0:85b3fd62ea1a 158 }
NYX 0:85b3fd62ea1a 159