Elijah Stanger-Jones / mbed-dev-f303

test

targets/TARGET_STM/gpio_api.c@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) 2015, 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 #include "mbed_assert.h"
elijahsj 1:8a094db1347f 31 #include "gpio_api.h"
elijahsj 1:8a094db1347f 32 #include "pinmap.h"
elijahsj 1:8a094db1347f 33 #include "mbed_error.h"
elijahsj 1:8a094db1347f 34 #include "pin_device.h"
elijahsj 1:8a094db1347f 35
elijahsj 1:8a094db1347f 36 extern const uint32_t ll_pin_defines[16];
elijahsj 1:8a094db1347f 37
elijahsj 1:8a094db1347f 38 // Enable GPIO clock and return GPIO base address
elijahsj 1:8a094db1347f 39 GPIO_TypeDef *Set_GPIO_Clock(uint32_t port_idx) {
elijahsj 1:8a094db1347f 40 uint32_t gpio_add = 0;
elijahsj 1:8a094db1347f 41 switch (port_idx) {
elijahsj 1:8a094db1347f 42 case PortA:
elijahsj 1:8a094db1347f 43 gpio_add = GPIOA_BASE;
elijahsj 1:8a094db1347f 44 __HAL_RCC_GPIOA_CLK_ENABLE();
elijahsj 1:8a094db1347f 45 break;
elijahsj 1:8a094db1347f 46 case PortB:
elijahsj 1:8a094db1347f 47 gpio_add = GPIOB_BASE;
elijahsj 1:8a094db1347f 48 __HAL_RCC_GPIOB_CLK_ENABLE();
elijahsj 1:8a094db1347f 49 break;
elijahsj 1:8a094db1347f 50 #if defined(GPIOC_BASE)
elijahsj 1:8a094db1347f 51 case PortC:
elijahsj 1:8a094db1347f 52 gpio_add = GPIOC_BASE;
elijahsj 1:8a094db1347f 53 __HAL_RCC_GPIOC_CLK_ENABLE();
elijahsj 1:8a094db1347f 54 break;
elijahsj 1:8a094db1347f 55 #endif
elijahsj 1:8a094db1347f 56 #if defined GPIOD_BASE
elijahsj 1:8a094db1347f 57 case PortD:
elijahsj 1:8a094db1347f 58 gpio_add = GPIOD_BASE;
elijahsj 1:8a094db1347f 59 __HAL_RCC_GPIOD_CLK_ENABLE();
elijahsj 1:8a094db1347f 60 break;
elijahsj 1:8a094db1347f 61 #endif
elijahsj 1:8a094db1347f 62 #if defined GPIOE_BASE
elijahsj 1:8a094db1347f 63 case PortE:
elijahsj 1:8a094db1347f 64 gpio_add = GPIOE_BASE;
elijahsj 1:8a094db1347f 65 __HAL_RCC_GPIOE_CLK_ENABLE();
elijahsj 1:8a094db1347f 66 break;
elijahsj 1:8a094db1347f 67 #endif
elijahsj 1:8a094db1347f 68 #if defined GPIOF_BASE
elijahsj 1:8a094db1347f 69 case PortF:
elijahsj 1:8a094db1347f 70 gpio_add = GPIOF_BASE;
elijahsj 1:8a094db1347f 71 __HAL_RCC_GPIOF_CLK_ENABLE();
elijahsj 1:8a094db1347f 72 break;
elijahsj 1:8a094db1347f 73 #endif
elijahsj 1:8a094db1347f 74 #if defined GPIOG_BASE
elijahsj 1:8a094db1347f 75 case PortG:
elijahsj 1:8a094db1347f 76 #if defined TARGET_STM32L4
elijahsj 1:8a094db1347f 77 __HAL_RCC_PWR_CLK_ENABLE();
elijahsj 1:8a094db1347f 78 HAL_PWREx_EnableVddIO2();
elijahsj 1:8a094db1347f 79 #endif
elijahsj 1:8a094db1347f 80 gpio_add = GPIOG_BASE;
elijahsj 1:8a094db1347f 81 __HAL_RCC_GPIOG_CLK_ENABLE();
elijahsj 1:8a094db1347f 82 break;
elijahsj 1:8a094db1347f 83 #endif
elijahsj 1:8a094db1347f 84 #if defined GPIOH_BASE
elijahsj 1:8a094db1347f 85 case PortH:
elijahsj 1:8a094db1347f 86 gpio_add = GPIOH_BASE;
elijahsj 1:8a094db1347f 87 __HAL_RCC_GPIOH_CLK_ENABLE();
elijahsj 1:8a094db1347f 88 break;
elijahsj 1:8a094db1347f 89 #endif
elijahsj 1:8a094db1347f 90 #if defined GPIOI_BASE
elijahsj 1:8a094db1347f 91 case PortI:
elijahsj 1:8a094db1347f 92 gpio_add = GPIOI_BASE;
elijahsj 1:8a094db1347f 93 __HAL_RCC_GPIOI_CLK_ENABLE();
elijahsj 1:8a094db1347f 94 break;
elijahsj 1:8a094db1347f 95 #endif
elijahsj 1:8a094db1347f 96 #if defined GPIOJ_BASE
elijahsj 1:8a094db1347f 97 case PortJ:
elijahsj 1:8a094db1347f 98 gpio_add = GPIOJ_BASE;
elijahsj 1:8a094db1347f 99 __HAL_RCC_GPIOJ_CLK_ENABLE();
elijahsj 1:8a094db1347f 100 break;
elijahsj 1:8a094db1347f 101 #endif
elijahsj 1:8a094db1347f 102 #if defined GPIOK_BASE
elijahsj 1:8a094db1347f 103 case PortK:
elijahsj 1:8a094db1347f 104 gpio_add = GPIOK_BASE;
elijahsj 1:8a094db1347f 105 __HAL_RCC_GPIOK_CLK_ENABLE();
elijahsj 1:8a094db1347f 106 break;
elijahsj 1:8a094db1347f 107 #endif
elijahsj 1:8a094db1347f 108 default:
elijahsj 1:8a094db1347f 109 error("Pinmap error: wrong port number.");
elijahsj 1:8a094db1347f 110 break;
elijahsj 1:8a094db1347f 111 }
elijahsj 1:8a094db1347f 112 return (GPIO_TypeDef *) gpio_add;
elijahsj 1:8a094db1347f 113 }
elijahsj 1:8a094db1347f 114
elijahsj 1:8a094db1347f 115 uint32_t gpio_set(PinName pin) {
elijahsj 1:8a094db1347f 116 MBED_ASSERT(pin != (PinName)NC);
elijahsj 1:8a094db1347f 117
elijahsj 1:8a094db1347f 118 pin_function(pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
elijahsj 1:8a094db1347f 119
elijahsj 1:8a094db1347f 120 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
elijahsj 1:8a094db1347f 121 }
elijahsj 1:8a094db1347f 122
elijahsj 1:8a094db1347f 123
elijahsj 1:8a094db1347f 124 void gpio_init(gpio_t *obj, PinName pin) {
elijahsj 1:8a094db1347f 125 obj->pin = pin;
elijahsj 1:8a094db1347f 126 if (pin == (PinName)NC) {
elijahsj 1:8a094db1347f 127 return;
elijahsj 1:8a094db1347f 128 }
elijahsj 1:8a094db1347f 129
elijahsj 1:8a094db1347f 130 uint32_t port_index = STM_PORT(pin);
elijahsj 1:8a094db1347f 131
elijahsj 1:8a094db1347f 132 // Enable GPIO clock
elijahsj 1:8a094db1347f 133 GPIO_TypeDef *gpio = Set_GPIO_Clock(port_index);
elijahsj 1:8a094db1347f 134
elijahsj 1:8a094db1347f 135 // Fill GPIO object structure for future use
elijahsj 1:8a094db1347f 136 obj->mask = gpio_set(pin);
elijahsj 1:8a094db1347f 137 obj->gpio = gpio;
elijahsj 1:8a094db1347f 138 obj->ll_pin = ll_pin_defines[STM_PIN(obj->pin)];
elijahsj 1:8a094db1347f 139 obj->reg_in = &gpio->IDR;
elijahsj 1:8a094db1347f 140 obj->reg_set = &gpio->BSRR;
elijahsj 1:8a094db1347f 141 #ifdef GPIO_IP_WITHOUT_BRR
elijahsj 1:8a094db1347f 142 obj->reg_clr = &gpio->BSRR;
elijahsj 1:8a094db1347f 143 #else
elijahsj 1:8a094db1347f 144 obj->reg_clr = &gpio->BRR;
elijahsj 1:8a094db1347f 145 #endif
elijahsj 1:8a094db1347f 146 }
elijahsj 1:8a094db1347f 147
elijahsj 1:8a094db1347f 148 void gpio_mode(gpio_t *obj, PinMode mode) {
elijahsj 1:8a094db1347f 149 pin_mode(obj->pin, mode);
elijahsj 1:8a094db1347f 150 }
elijahsj 1:8a094db1347f 151
elijahsj 1:8a094db1347f 152 inline void gpio_dir(gpio_t *obj, PinDirection direction) {
elijahsj 1:8a094db1347f 153 if (direction == PIN_INPUT) {
elijahsj 1:8a094db1347f 154 LL_GPIO_SetPinMode(obj->gpio, obj->ll_pin, LL_GPIO_MODE_INPUT);
elijahsj 1:8a094db1347f 155 } else {
elijahsj 1:8a094db1347f 156 LL_GPIO_SetPinMode(obj->gpio, obj->ll_pin, LL_GPIO_MODE_OUTPUT);
elijahsj 1:8a094db1347f 157 }
elijahsj 1:8a094db1347f 158 }
elijahsj 1:8a094db1347f 159