MBED-DEV only fro Nucleo STM32F303K8T6
Fork of mbed-dev by
targets/TARGET_STM/TARGET_STM32F3/gpio_api.c@151:acf04f8e7d03, 2016-11-19 (annotated)
- Committer:
- pravinautosys
- Date:
- Sat Nov 19 10:38:54 2016 +0000
- Revision:
- 151:acf04f8e7d03
- Parent:
- 149:156823d33999
MyMBED-DEVWithSTM32F303K8T6;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
<> | 144:ef7eb2e8f9f7 | 1 | /* mbed Microcontroller Library |
<> | 144:ef7eb2e8f9f7 | 2 | ******************************************************************************* |
<> | 144:ef7eb2e8f9f7 | 3 | * Copyright (c) 2014, STMicroelectronics |
<> | 144:ef7eb2e8f9f7 | 4 | * All rights reserved. |
<> | 144:ef7eb2e8f9f7 | 5 | * |
<> | 144:ef7eb2e8f9f7 | 6 | * Redistribution and use in source and binary forms, with or without |
<> | 144:ef7eb2e8f9f7 | 7 | * modification, are permitted provided that the following conditions are met: |
<> | 144:ef7eb2e8f9f7 | 8 | * |
<> | 144:ef7eb2e8f9f7 | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
<> | 144:ef7eb2e8f9f7 | 10 | * this list of conditions and the following disclaimer. |
<> | 144:ef7eb2e8f9f7 | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
<> | 144:ef7eb2e8f9f7 | 12 | * this list of conditions and the following disclaimer in the documentation |
<> | 144:ef7eb2e8f9f7 | 13 | * and/or other materials provided with the distribution. |
<> | 144:ef7eb2e8f9f7 | 14 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
<> | 144:ef7eb2e8f9f7 | 15 | * may be used to endorse or promote products derived from this software |
<> | 144:ef7eb2e8f9f7 | 16 | * without specific prior written permission. |
<> | 144:ef7eb2e8f9f7 | 17 | * |
<> | 144:ef7eb2e8f9f7 | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
<> | 144:ef7eb2e8f9f7 | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
<> | 144:ef7eb2e8f9f7 | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
<> | 144:ef7eb2e8f9f7 | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
<> | 144:ef7eb2e8f9f7 | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
<> | 144:ef7eb2e8f9f7 | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
<> | 144:ef7eb2e8f9f7 | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
<> | 144:ef7eb2e8f9f7 | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
<> | 144:ef7eb2e8f9f7 | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
<> | 144:ef7eb2e8f9f7 | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
<> | 144:ef7eb2e8f9f7 | 28 | ******************************************************************************* |
<> | 144:ef7eb2e8f9f7 | 29 | */ |
<> | 144:ef7eb2e8f9f7 | 30 | #include "mbed_assert.h" |
<> | 144:ef7eb2e8f9f7 | 31 | #include "gpio_api.h" |
<> | 144:ef7eb2e8f9f7 | 32 | #include "pinmap.h" |
<> | 144:ef7eb2e8f9f7 | 33 | #include "mbed_error.h" |
<> | 144:ef7eb2e8f9f7 | 34 | |
<> | 144:ef7eb2e8f9f7 | 35 | extern uint32_t Set_GPIO_Clock(uint32_t port_idx); |
<> | 144:ef7eb2e8f9f7 | 36 | |
<> | 144:ef7eb2e8f9f7 | 37 | uint32_t gpio_set(PinName pin) |
<> | 144:ef7eb2e8f9f7 | 38 | { |
<> | 144:ef7eb2e8f9f7 | 39 | MBED_ASSERT(pin != (PinName)NC); |
<> | 144:ef7eb2e8f9f7 | 40 | |
<> | 144:ef7eb2e8f9f7 | 41 | pin_function(pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
<> | 144:ef7eb2e8f9f7 | 42 | |
<> | 144:ef7eb2e8f9f7 | 43 | return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask |
<> | 144:ef7eb2e8f9f7 | 44 | } |
<> | 144:ef7eb2e8f9f7 | 45 | |
<> | 144:ef7eb2e8f9f7 | 46 | void gpio_init(gpio_t *obj, PinName pin) |
<> | 144:ef7eb2e8f9f7 | 47 | { |
<> | 144:ef7eb2e8f9f7 | 48 | obj->pin = pin; |
<> | 144:ef7eb2e8f9f7 | 49 | if (pin == (PinName)NC) { |
<> | 144:ef7eb2e8f9f7 | 50 | return; |
<> | 144:ef7eb2e8f9f7 | 51 | } |
<> | 144:ef7eb2e8f9f7 | 52 | |
<> | 144:ef7eb2e8f9f7 | 53 | uint32_t port_index = STM_PORT(pin); |
<> | 144:ef7eb2e8f9f7 | 54 | |
<> | 144:ef7eb2e8f9f7 | 55 | // Enable GPIO clock |
<> | 144:ef7eb2e8f9f7 | 56 | uint32_t gpio_add = Set_GPIO_Clock(port_index); |
<> | 144:ef7eb2e8f9f7 | 57 | GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; |
<> | 144:ef7eb2e8f9f7 | 58 | |
<> | 144:ef7eb2e8f9f7 | 59 | // Fill GPIO object structure for future use |
<> | 144:ef7eb2e8f9f7 | 60 | obj->mask = gpio_set(pin); |
<> | 144:ef7eb2e8f9f7 | 61 | obj->reg_in = &gpio->IDR; |
<> | 144:ef7eb2e8f9f7 | 62 | obj->reg_set = &gpio->BSRR; |
<> | 144:ef7eb2e8f9f7 | 63 | obj->reg_clr = &gpio->BRR; |
<> | 144:ef7eb2e8f9f7 | 64 | } |
<> | 144:ef7eb2e8f9f7 | 65 | |
<> | 144:ef7eb2e8f9f7 | 66 | void gpio_mode(gpio_t *obj, PinMode mode) |
<> | 144:ef7eb2e8f9f7 | 67 | { |
<> | 144:ef7eb2e8f9f7 | 68 | pin_mode(obj->pin, mode); |
<> | 144:ef7eb2e8f9f7 | 69 | } |
<> | 144:ef7eb2e8f9f7 | 70 | |
<> | 144:ef7eb2e8f9f7 | 71 | void gpio_dir(gpio_t *obj, PinDirection direction) |
<> | 144:ef7eb2e8f9f7 | 72 | { |
<> | 144:ef7eb2e8f9f7 | 73 | MBED_ASSERT(obj->pin != (PinName)NC); |
<> | 144:ef7eb2e8f9f7 | 74 | if (direction == PIN_OUTPUT) { |
<> | 144:ef7eb2e8f9f7 | 75 | pin_function(obj->pin, STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0)); |
<> | 144:ef7eb2e8f9f7 | 76 | } else { // PIN_INPUT |
<> | 144:ef7eb2e8f9f7 | 77 | pin_function(obj->pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
<> | 144:ef7eb2e8f9f7 | 78 | } |
<> | 144:ef7eb2e8f9f7 | 79 | } |