mbed library sources
Dependents: FRDM-KL46Z_LCD_Test FRDM-KL46Z_LCD_Test FRDM-KL46Z_Plantilla FRDM-KL46Z_Plantilla ... more
targets/hal/TARGET_STM/TARGET_STM32F407VG/port_api.c@0:6bc4ac881c8e, 2016-07-28 (annotated)
- Committer:
- ebrus
- Date:
- Thu Jul 28 15:56:34 2016 +0000
- Revision:
- 0:6bc4ac881c8e
1;
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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ebrus | 0:6bc4ac881c8e | 1 | /* mbed Microcontroller Library |
ebrus | 0:6bc4ac881c8e | 2 | ******************************************************************************* |
ebrus | 0:6bc4ac881c8e | 3 | * Copyright (c) 2014, STMicroelectronics |
ebrus | 0:6bc4ac881c8e | 4 | * All rights reserved. |
ebrus | 0:6bc4ac881c8e | 5 | * |
ebrus | 0:6bc4ac881c8e | 6 | * Redistribution and use in source and binary forms, with or without |
ebrus | 0:6bc4ac881c8e | 7 | * modification, are permitted provided that the following conditions are met: |
ebrus | 0:6bc4ac881c8e | 8 | * |
ebrus | 0:6bc4ac881c8e | 9 | * 1. Redistributions of source code must retain the above copyright notice, |
ebrus | 0:6bc4ac881c8e | 10 | * this list of conditions and the following disclaimer. |
ebrus | 0:6bc4ac881c8e | 11 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
ebrus | 0:6bc4ac881c8e | 12 | * this list of conditions and the following disclaimer in the documentation |
ebrus | 0:6bc4ac881c8e | 13 | * and/or other materials provided with the distribution. |
ebrus | 0:6bc4ac881c8e | 14 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
ebrus | 0:6bc4ac881c8e | 15 | * may be used to endorse or promote products derived from this software |
ebrus | 0:6bc4ac881c8e | 16 | * without specific prior written permission. |
ebrus | 0:6bc4ac881c8e | 17 | * |
ebrus | 0:6bc4ac881c8e | 18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
ebrus | 0:6bc4ac881c8e | 19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
ebrus | 0:6bc4ac881c8e | 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
ebrus | 0:6bc4ac881c8e | 21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
ebrus | 0:6bc4ac881c8e | 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
ebrus | 0:6bc4ac881c8e | 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
ebrus | 0:6bc4ac881c8e | 24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
ebrus | 0:6bc4ac881c8e | 25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
ebrus | 0:6bc4ac881c8e | 26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
ebrus | 0:6bc4ac881c8e | 27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
ebrus | 0:6bc4ac881c8e | 28 | ******************************************************************************* |
ebrus | 0:6bc4ac881c8e | 29 | */ |
ebrus | 0:6bc4ac881c8e | 30 | #include "port_api.h" |
ebrus | 0:6bc4ac881c8e | 31 | #include "pinmap.h" |
ebrus | 0:6bc4ac881c8e | 32 | #include "gpio_api.h" |
ebrus | 0:6bc4ac881c8e | 33 | #include "mbed_error.h" |
ebrus | 0:6bc4ac881c8e | 34 | |
ebrus | 0:6bc4ac881c8e | 35 | #if DEVICE_PORTIN || DEVICE_PORTOUT |
ebrus | 0:6bc4ac881c8e | 36 | |
ebrus | 0:6bc4ac881c8e | 37 | extern uint32_t Set_GPIO_Clock(uint32_t port_idx); |
ebrus | 0:6bc4ac881c8e | 38 | |
ebrus | 0:6bc4ac881c8e | 39 | // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...) |
ebrus | 0:6bc4ac881c8e | 40 | // low nibble = pin number |
ebrus | 0:6bc4ac881c8e | 41 | PinName port_pin(PortName port, int pin_n) { |
ebrus | 0:6bc4ac881c8e | 42 | return (PinName)(pin_n + (port << 4)); |
ebrus | 0:6bc4ac881c8e | 43 | } |
ebrus | 0:6bc4ac881c8e | 44 | |
ebrus | 0:6bc4ac881c8e | 45 | void port_init(port_t *obj, PortName port, int mask, PinDirection dir) { |
ebrus | 0:6bc4ac881c8e | 46 | uint32_t port_index = (uint32_t)port; |
ebrus | 0:6bc4ac881c8e | 47 | |
ebrus | 0:6bc4ac881c8e | 48 | // Enable GPIO clock |
ebrus | 0:6bc4ac881c8e | 49 | uint32_t gpio_add = Set_GPIO_Clock(port_index); |
ebrus | 0:6bc4ac881c8e | 50 | GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add; |
ebrus | 0:6bc4ac881c8e | 51 | |
ebrus | 0:6bc4ac881c8e | 52 | // Fill PORT object structure for future use |
ebrus | 0:6bc4ac881c8e | 53 | obj->port = port; |
ebrus | 0:6bc4ac881c8e | 54 | obj->mask = mask; |
ebrus | 0:6bc4ac881c8e | 55 | obj->direction = dir; |
ebrus | 0:6bc4ac881c8e | 56 | obj->reg_in = &gpio->IDR; |
ebrus | 0:6bc4ac881c8e | 57 | obj->reg_out = &gpio->ODR; |
ebrus | 0:6bc4ac881c8e | 58 | |
ebrus | 0:6bc4ac881c8e | 59 | port_dir(obj, dir); |
ebrus | 0:6bc4ac881c8e | 60 | } |
ebrus | 0:6bc4ac881c8e | 61 | |
ebrus | 0:6bc4ac881c8e | 62 | void port_dir(port_t *obj, PinDirection dir) { |
ebrus | 0:6bc4ac881c8e | 63 | uint32_t i; |
ebrus | 0:6bc4ac881c8e | 64 | obj->direction = dir; |
ebrus | 0:6bc4ac881c8e | 65 | for (i = 0; i < 16; i++) { // Process all pins |
ebrus | 0:6bc4ac881c8e | 66 | if (obj->mask & (1 << i)) { // If the pin is used |
ebrus | 0:6bc4ac881c8e | 67 | if (dir == PIN_OUTPUT) { |
ebrus | 0:6bc4ac881c8e | 68 | pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0)); |
ebrus | 0:6bc4ac881c8e | 69 | } else { // PIN_INPUT |
ebrus | 0:6bc4ac881c8e | 70 | pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0)); |
ebrus | 0:6bc4ac881c8e | 71 | } |
ebrus | 0:6bc4ac881c8e | 72 | } |
ebrus | 0:6bc4ac881c8e | 73 | } |
ebrus | 0:6bc4ac881c8e | 74 | } |
ebrus | 0:6bc4ac881c8e | 75 | |
ebrus | 0:6bc4ac881c8e | 76 | void port_mode(port_t *obj, PinMode mode) { |
ebrus | 0:6bc4ac881c8e | 77 | uint32_t i; |
ebrus | 0:6bc4ac881c8e | 78 | for (i = 0; i < 16; i++) { // Process all pins |
ebrus | 0:6bc4ac881c8e | 79 | if (obj->mask & (1 << i)) { // If the pin is used |
ebrus | 0:6bc4ac881c8e | 80 | pin_mode(port_pin(obj->port, i), mode); |
ebrus | 0:6bc4ac881c8e | 81 | } |
ebrus | 0:6bc4ac881c8e | 82 | } |
ebrus | 0:6bc4ac881c8e | 83 | } |
ebrus | 0:6bc4ac881c8e | 84 | |
ebrus | 0:6bc4ac881c8e | 85 | void port_write(port_t *obj, int value) { |
ebrus | 0:6bc4ac881c8e | 86 | *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask); |
ebrus | 0:6bc4ac881c8e | 87 | } |
ebrus | 0:6bc4ac881c8e | 88 | |
ebrus | 0:6bc4ac881c8e | 89 | int port_read(port_t *obj) { |
ebrus | 0:6bc4ac881c8e | 90 | if (obj->direction == PIN_OUTPUT) { |
ebrus | 0:6bc4ac881c8e | 91 | return (*obj->reg_out & obj->mask); |
ebrus | 0:6bc4ac881c8e | 92 | } else { // PIN_INPUT |
ebrus | 0:6bc4ac881c8e | 93 | return (*obj->reg_in & obj->mask); |
ebrus | 0:6bc4ac881c8e | 94 | } |
ebrus | 0:6bc4ac881c8e | 95 | } |
ebrus | 0:6bc4ac881c8e | 96 | |
ebrus | 0:6bc4ac881c8e | 97 | #endif |