test / mbed-src

mbed library sources

Dependents:   bare

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_NUCLEO_F030R8/port_api.c@76:aeb1df146756, 2014-01-27 (annotated)

Committer:
mbed_official
Date:
Mon Jan 27 14:30:07 2014 +0000
Revision:
76:aeb1df146756
Child:
77:b5886236e6f0
Synchronized with git revision a31ec9c5f7bcb5c8a1b2eced103f6a1dfa921abd



Full URL: https://github.com/mbedmicro/mbed/commit/a31ec9c5f7bcb5c8a1b2eced103f6a1dfa921abd/



Add NUCLEO_L152RE

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /* mbed Microcontroller Library
mbed_official 76:aeb1df146756 2 *******************************************************************************
mbed_official 76:aeb1df146756 3 * Copyright (c) 2014, STMicroelectronics
mbed_official 76:aeb1df146756 4 * All rights reserved.
mbed_official 76:aeb1df146756 5 *
mbed_official 76:aeb1df146756 6 * Redistribution and use in source and binary forms, with or without
mbed_official 76:aeb1df146756 7 * modification, are permitted provided that the following conditions are met:
mbed_official 76:aeb1df146756 8 *
mbed_official 76:aeb1df146756 9 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 76:aeb1df146756 10 * this list of conditions and the following disclaimer.
mbed_official 76:aeb1df146756 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 76:aeb1df146756 12 * this list of conditions and the following disclaimer in the documentation
mbed_official 76:aeb1df146756 13 * and/or other materials provided with the distribution.
mbed_official 76:aeb1df146756 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 76:aeb1df146756 15 * may be used to endorse or promote products derived from this software
mbed_official 76:aeb1df146756 16 * without specific prior written permission.
mbed_official 76:aeb1df146756 17 *
mbed_official 76:aeb1df146756 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 76:aeb1df146756 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 76:aeb1df146756 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 76:aeb1df146756 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 76:aeb1df146756 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 76:aeb1df146756 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 76:aeb1df146756 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 76:aeb1df146756 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 76:aeb1df146756 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 76:aeb1df146756 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 76:aeb1df146756 28 *******************************************************************************
mbed_official 76:aeb1df146756 29 */
mbed_official 76:aeb1df146756 30 #include "port_api.h"
mbed_official 76:aeb1df146756 31 #include "pinmap.h"
mbed_official 76:aeb1df146756 32 #include "gpio_api.h"
mbed_official 76:aeb1df146756 33 #include "error.h"
mbed_official 76:aeb1df146756 34
mbed_official 76:aeb1df146756 35 #if DEVICE_PORTIN || DEVICE_PORTOUT
mbed_official 76:aeb1df146756 36
mbed_official 76:aeb1df146756 37 // high nibble = port number (0=A, 1=B, 2=C, 3=D, 4=E, 5=F, ...)
mbed_official 76:aeb1df146756 38 // low nibble = pin number
mbed_official 76:aeb1df146756 39 PinName port_pin(PortName port, int pin_n) {
mbed_official 76:aeb1df146756 40 return (PinName)(pin_n + (port << 4));
mbed_official 76:aeb1df146756 41 }
mbed_official 76:aeb1df146756 42
mbed_official 76:aeb1df146756 43 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 76:aeb1df146756 44 GPIO_TypeDef *gpio;
mbed_official 76:aeb1df146756 45
mbed_official 76:aeb1df146756 46 uint32_t port_index = (uint32_t)port;
mbed_official 76:aeb1df146756 47
mbed_official 76:aeb1df146756 48 // Get GPIO structure base address and enable clock
mbed_official 76:aeb1df146756 49 switch (port_index) {
mbed_official 76:aeb1df146756 50 case PortA:
mbed_official 76:aeb1df146756 51 gpio = (GPIO_TypeDef *)GPIOA_BASE;
mbed_official 76:aeb1df146756 52 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
mbed_official 76:aeb1df146756 53 break;
mbed_official 76:aeb1df146756 54 case PortB:
mbed_official 76:aeb1df146756 55 gpio = (GPIO_TypeDef *)GPIOB_BASE;
mbed_official 76:aeb1df146756 56 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
mbed_official 76:aeb1df146756 57 break;
mbed_official 76:aeb1df146756 58 case PortC:
mbed_official 76:aeb1df146756 59 gpio = (GPIO_TypeDef *)GPIOC_BASE;
mbed_official 76:aeb1df146756 60 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
mbed_official 76:aeb1df146756 61 break;
mbed_official 76:aeb1df146756 62 case PortD:
mbed_official 76:aeb1df146756 63 gpio = (GPIO_TypeDef *)GPIOD_BASE;
mbed_official 76:aeb1df146756 64 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOD, ENABLE);
mbed_official 76:aeb1df146756 65 break;
mbed_official 76:aeb1df146756 66 case PortF:
mbed_official 76:aeb1df146756 67 gpio = (GPIO_TypeDef *)GPIOF_BASE;
mbed_official 76:aeb1df146756 68 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOF, ENABLE);
mbed_official 76:aeb1df146756 69 break;
mbed_official 76:aeb1df146756 70 default:
mbed_official 76:aeb1df146756 71 error("GPIO port number is not correct.");
mbed_official 76:aeb1df146756 72 break;
mbed_official 76:aeb1df146756 73 }
mbed_official 76:aeb1df146756 74
mbed_official 76:aeb1df146756 75 // Fill PORT object structure for future use
mbed_official 76:aeb1df146756 76 obj->port = port;
mbed_official 76:aeb1df146756 77 obj->mask = mask;
mbed_official 76:aeb1df146756 78 obj->direction = dir;
mbed_official 76:aeb1df146756 79 obj->reg_in = &gpio->IDR;
mbed_official 76:aeb1df146756 80 obj->reg_out = &gpio->ODR;
mbed_official 76:aeb1df146756 81
mbed_official 76:aeb1df146756 82 port_dir(obj, dir);
mbed_official 76:aeb1df146756 83 }
mbed_official 76:aeb1df146756 84
mbed_official 76:aeb1df146756 85 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 76:aeb1df146756 86 uint32_t i;
mbed_official 76:aeb1df146756 87 obj->direction = dir;
mbed_official 76:aeb1df146756 88 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 76:aeb1df146756 89 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 76:aeb1df146756 90 if (dir == PIN_OUTPUT) {
mbed_official 76:aeb1df146756 91 pin_function(port_pin(obj->port, i), STM_PIN_DATA(GPIO_Mode_OUT, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 92 }
mbed_official 76:aeb1df146756 93 else { // PIN_INPUT
mbed_official 76:aeb1df146756 94 pin_function(port_pin(obj->port, i), STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 95 }
mbed_official 76:aeb1df146756 96 }
mbed_official 76:aeb1df146756 97 }
mbed_official 76:aeb1df146756 98 }
mbed_official 76:aeb1df146756 99
mbed_official 76:aeb1df146756 100 void port_mode(port_t *obj, PinMode mode) {
mbed_official 76:aeb1df146756 101 uint32_t i;
mbed_official 76:aeb1df146756 102 for (i = 0; i < 16; i++) { // Process all pins
mbed_official 76:aeb1df146756 103 if (obj->mask & (1 << i)) { // If the pin is used
mbed_official 76:aeb1df146756 104 pin_mode(port_pin(obj->port, i), mode);
mbed_official 76:aeb1df146756 105 }
mbed_official 76:aeb1df146756 106 }
mbed_official 76:aeb1df146756 107 }
mbed_official 76:aeb1df146756 108
mbed_official 76:aeb1df146756 109 void port_write(port_t *obj, int value) {
mbed_official 76:aeb1df146756 110 *obj->reg_out = (*obj->reg_out & ~obj->mask) | (value & obj->mask);
mbed_official 76:aeb1df146756 111 }
mbed_official 76:aeb1df146756 112
mbed_official 76:aeb1df146756 113 int port_read(port_t *obj) {
mbed_official 76:aeb1df146756 114 if (obj->direction == PIN_OUTPUT) {
mbed_official 76:aeb1df146756 115 return (*obj->reg_out & obj->mask);
mbed_official 76:aeb1df146756 116 }
mbed_official 76:aeb1df146756 117 else { // PIN_INPUT
mbed_official 76:aeb1df146756 118 return (*obj->reg_in & obj->mask);
mbed_official 76:aeb1df146756 119 }
mbed_official 76:aeb1df146756 120 }
mbed_official 76:aeb1df146756 121
mbed_official 76:aeb1df146756 122 #endif