shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_DISCO_F407VG/port_api.c@133:d4dda5c437f0, 2014-03-24 (annotated)

Committer:
mbed_official
Date:
Mon Mar 24 17:45:07 2014 +0000
Revision:
133:d4dda5c437f0
Child:
242:7074e42da0b2
Synchronized with git revision 47b961246bed973fe4cb8932781ffc8025b78a61



Full URL: https://github.com/mbedmicro/mbed/commit/47b961246bed973fe4cb8932781ffc8025b78a61/



[STM32F4-Discovery (STM32F407VG)] initial port

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 133:d4dda5c437f0 1 /* mbed Microcontroller Library
mbed_official 133:d4dda5c437f0 2 *******************************************************************************
mbed_official 133:d4dda5c437f0 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 133:d4dda5c437f0 4 * All rights reserved.
mbed_official 133:d4dda5c437f0 5 *
mbed_official 133:d4dda5c437f0 6 * Redistribution and use in source and binary forms, with or without
mbed_official 133:d4dda5c437f0 7 * modification, are permitted provided that the following conditions are met:
mbed_official 133:d4dda5c437f0 8 *
mbed_official 133:d4dda5c437f0 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 133:d4dda5c437f0 10 * this list of conditions and the following disclaimer.
mbed_official 133:d4dda5c437f0 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 133:d4dda5c437f0 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 133:d4dda5c437f0 13 * and/or other materials provided with the distribution.
mbed_official 133:d4dda5c437f0 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 133:d4dda5c437f0 15 * may be used to endorse or promote products derived from this software
mbed_official 133:d4dda5c437f0 16 * without specific prior written permission.
mbed_official 133:d4dda5c437f0 17 *
mbed_official 133:d4dda5c437f0 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 133:d4dda5c437f0 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 133:d4dda5c437f0 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 133:d4dda5c437f0 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 133:d4dda5c437f0 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 133:d4dda5c437f0 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 133:d4dda5c437f0 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 133:d4dda5c437f0 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 133:d4dda5c437f0 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 133:d4dda5c437f0 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 133:d4dda5c437f0 28 *******************************************************************************
mbed_official 133:d4dda5c437f0 29 */
mbed_official 133:d4dda5c437f0 30 #include "port_api.h"
mbed_official 133:d4dda5c437f0 31 #include "pinmap.h"
mbed_official 133:d4dda5c437f0 32 #include "gpio_api.h"
mbed_official 133:d4dda5c437f0 33 #include "error.h"
mbed_official 133:d4dda5c437f0 34 #include "stm32f4xx_hal.h"
mbed_official 133:d4dda5c437f0 35
mbed_official 133:d4dda5c437f0 36 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 133:d4dda5c437f0 37
mbed_official 133:d4dda5c437f0 38 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 133:d4dda5c437f0 39
mbed_official 133:d4dda5c437f0 40 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 133:d4dda5c437f0 41 // low nibble = pin number
mbed_official 133:d4dda5c437f0 42 PinName port_pin(PortName port, int pin_n) {
mbed_official 133:d4dda5c437f0 43 return (PinName)(pin_n + (port << 4));
mbed_official 133:d4dda5c437f0 44 }
mbed_official 133:d4dda5c437f0 45
mbed_official 133:d4dda5c437f0 46 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 133:d4dda5c437f0 47 uint32_t port_index = (uint32_t)port;
mbed_official 133:d4dda5c437f0 48
mbed_official 133:d4dda5c437f0 49 // Enable GPIO clock
mbed_official 133:d4dda5c437f0 50 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 133:d4dda5c437f0 51 GPIO_TypeDef *gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 133:d4dda5c437f0 52
mbed_official 133:d4dda5c437f0 53 // Fill PORT object structure for future use
mbed_official 133:d4dda5c437f0 54 obj->port = port;
mbed_official 133:d4dda5c437f0 55 obj->mask = mask;
mbed_official 133:d4dda5c437f0 56 obj->direction = dir;
mbed_official 133:d4dda5c437f0 57 obj->reg_in = &gpio->IDR;
mbed_official 133:d4dda5c437f0 58 obj->reg_out = &gpio->ODR;
mbed_official 133:d4dda5c437f0 59
mbed_official 133:d4dda5c437f0 60 port_dir(obj, dir);
mbed_official 133:d4dda5c437f0 61 }
mbed_official 133:d4dda5c437f0 62
mbed_official 133:d4dda5c437f0 63 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 133:d4dda5c437f0 64 uint32_t i;
mbed_official 133:d4dda5c437f0 65 obj->direction = dir;
mbed_official 133:d4dda5c437f0 66 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 133:d4dda5c437f0 67 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 133:d4dda5c437f0 68 if (dir == PIN_OUTPUT) {
mbed_official 133:d4dda5c437f0 69 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0));
mbed_official 133:d4dda5c437f0 70 }
mbed_official 133:d4dda5c437f0 71 else { // PIN_INPUT
mbed_official 133:d4dda5c437f0 72 pin_function(port_pin(obj->port, i), STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
mbed_official 133:d4dda5c437f0 73 }
mbed_official 133:d4dda5c437f0 74 }
mbed_official 133:d4dda5c437f0 75 }
mbed_official 133:d4dda5c437f0 76 }
mbed_official 133:d4dda5c437f0 77
mbed_official 133:d4dda5c437f0 78 void port_mode(port_t *obj, PinMode mode) {
mbed_official 133:d4dda5c437f0 79 uint32_t i;
mbed_official 133:d4dda5c437f0 80 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 133:d4dda5c437f0 81 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 133:d4dda5c437f0 82 pin_mode(port_pin(obj->port, i), mode);
mbed_official 133:d4dda5c437f0 83 }
mbed_official 133:d4dda5c437f0 84 }
mbed_official 133:d4dda5c437f0 85 }
mbed_official 133:d4dda5c437f0 86
mbed_official 133:d4dda5c437f0 87 void port_write(port_t *obj, int value) {
mbed_official 133:d4dda5c437f0 88 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
mbed_official 133:d4dda5c437f0 89 }
mbed_official 133:d4dda5c437f0 90
mbed_official 133:d4dda5c437f0 91 int port_read(port_t *obj) {
mbed_official 133:d4dda5c437f0 92 if (obj->direction == PIN_OUTPUT) {
mbed_official 133:d4dda5c437f0 93 return (*obj->reg_out & obj->mask);
mbed_official 133:d4dda5c437f0 94 }
mbed_official 133:d4dda5c437f0 95 else { // PIN_INPUT
mbed_official 133:d4dda5c437f0 96 return (*obj->reg_in & obj->mask);
mbed_official 133:d4dda5c437f0 97 }
mbed_official 133:d4dda5c437f0 98 }
mbed_official 133:d4dda5c437f0 99
mbed_official 133:d4dda5c437f0 100 #endif