Peter Drescher / mbed-F401

mbed library with additional peripherals for ST F401 board

Fork of mbed-src by mbed official

This mbed LIB has additional peripherals for ST F401 board

  • UART2 : PA_3 rx, PA_2 tx
  • UART3 : PC_7 rx, PC_6 tx
  • I2C2 : PB_3 SDA, PB_10 SCL
  • I2C3 : PB_4 SDA, PA_8 SCL

targets/hal/TARGET_STM/TARGET_NUCLEO_L152RE/gpio_api.c@76:aeb1df146756, 2014-01-27 (annotated)

Committer:
mbed_official
Date:
Mon Jan 27 14:30:07 2014 +0000
Revision:
76:aeb1df146756
Child:
84:f54042cbc282
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 "gpio_api.h"
mbed_official 76:aeb1df146756 31 #include "pinmap.h"
mbed_official 76:aeb1df146756 32 #include "error.h"
mbed_official 76:aeb1df146756 33
mbed_official 76:aeb1df146756 34 extern uint32_t Set_GPIO_Clock(uint32_t port_idx);
mbed_official 76:aeb1df146756 35
mbed_official 76:aeb1df146756 36 uint32_t gpio_set(PinName pin) {
mbed_official 76:aeb1df146756 37 if (pin == NC) return 0;
mbed_official 76:aeb1df146756 38
mbed_official 76:aeb1df146756 39 pin_function(pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 40
mbed_official 76:aeb1df146756 41 return (uint32_t)(1 << ((uint32_t)pin & 0xF)); // Return the pin mask
mbed_official 76:aeb1df146756 42 }
mbed_official 76:aeb1df146756 43
mbed_official 76:aeb1df146756 44 void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) {
mbed_official 76:aeb1df146756 45 GPIO_TypeDef *gpio;
mbed_official 76:aeb1df146756 46
mbed_official 76:aeb1df146756 47 if (pin == NC) return;
mbed_official 76:aeb1df146756 48
mbed_official 76:aeb1df146756 49 uint32_t port_index = STM_PORT(pin);
mbed_official 76:aeb1df146756 50
mbed_official 76:aeb1df146756 51 // Enable GPIO clock
mbed_official 76:aeb1df146756 52 uint32_t gpio_add = Set_GPIO_Clock(port_index);
mbed_official 76:aeb1df146756 53 gpio = (GPIO_TypeDef *)gpio_add;
mbed_official 76:aeb1df146756 54
mbed_official 76:aeb1df146756 55 // Fill GPIO object structure for future use
mbed_official 76:aeb1df146756 56 obj->pin = pin;
mbed_official 76:aeb1df146756 57 obj->mask = gpio_set(pin);
mbed_official 76:aeb1df146756 58 obj->reg_in = &gpio->IDR;
mbed_official 76:aeb1df146756 59 obj->reg_set = &gpio->BSRRL;
mbed_official 76:aeb1df146756 60 obj->reg_clr = &gpio->BSRRH;
mbed_official 76:aeb1df146756 61
mbed_official 76:aeb1df146756 62 // Configure GPIO
mbed_official 76:aeb1df146756 63 if (direction == PIN_OUTPUT) {
mbed_official 76:aeb1df146756 64 pin_function(pin, STM_PIN_DATA(GPIO_Mode_OUT, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 65 }
mbed_official 76:aeb1df146756 66 else { // PIN_INPUT
mbed_official 76:aeb1df146756 67 pin_function(pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 68 }
mbed_official 76:aeb1df146756 69 }
mbed_official 76:aeb1df146756 70
mbed_official 76:aeb1df146756 71 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 76:aeb1df146756 72 pin_mode(obj->pin, mode);
mbed_official 76:aeb1df146756 73 }
mbed_official 76:aeb1df146756 74
mbed_official 76:aeb1df146756 75 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 76:aeb1df146756 76 if (direction == PIN_OUTPUT) {
mbed_official 76:aeb1df146756 77 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_OUT, GPIO_OType_PP, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 78 }
mbed_official 76:aeb1df146756 79 else { // PIN_INPUT
mbed_official 76:aeb1df146756 80 pin_function(obj->pin, STM_PIN_DATA(GPIO_Mode_IN, 0, GPIO_PuPd_NOPULL, 0xFF));
mbed_official 76:aeb1df146756 81 }
mbed_official 76:aeb1df146756 82 }