Geremia G / mbed-src

- fix F411 F334 systeminit when HSI used - portinout always read IDR regardless of port direction

Fork of mbed-src by mbed official

targets/hal/TARGET_STM/TARGET_STM32F4XX/pinmap.c@332:e299ae530e63, 2014-09-27 (annotated)

Committer:
Geremia
Date:
Sat Sep 27 11:16:28 2014 +0000
Revision:
332:e299ae530e63
Parent:
285:31249416b6f9 
- fix F411 F334 systeminit when HSI used; - STMs PortInOut port.read() always read input data register (real external pin state) even if direction is output (same as other platforms)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 20:4263a77256ae 1 /* mbed Microcontroller Library
bogdanm 20:4263a77256ae 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 20:4263a77256ae 3 *
bogdanm 20:4263a77256ae 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 20:4263a77256ae 5 * you may not use this file except in compliance with the License.
bogdanm 20:4263a77256ae 6 * You may obtain a copy of the License at
bogdanm 20:4263a77256ae 7 *
bogdanm 20:4263a77256ae 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 20:4263a77256ae 9 *
bogdanm 20:4263a77256ae 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 20:4263a77256ae 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 20:4263a77256ae 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 20:4263a77256ae 13 * See the License for the specific language governing permissions and
bogdanm 20:4263a77256ae 14 * limitations under the License.
bogdanm 20:4263a77256ae 15 */
mbed_official 227:7bd0639b8911 16 #include "mbed_assert.h"
bogdanm 20:4263a77256ae 17 #include "pinmap.h"
mbed_official 285:31249416b6f9 18 #include "mbed_error.h"
bogdanm 20:4263a77256ae 19
bogdanm 20:4263a77256ae 20 /**
bogdanm 20:4263a77256ae 21 * Set the pin into input, output, alternate function or analog mode
bogdanm 20:4263a77256ae 22 */
bogdanm 20:4263a77256ae 23 void pin_function(PinName pin, int data) {
mbed_official 227:7bd0639b8911 24 MBED_ASSERT(pin != (PinName)NC);
bogdanm 20:4263a77256ae 25
bogdanm 20:4263a77256ae 26 int mode = STM_PIN_MODE(data);
bogdanm 20:4263a77256ae 27 int func = STM_PIN_FUNC(data);
bogdanm 20:4263a77256ae 28
bogdanm 20:4263a77256ae 29 uint32_t pin_number = (uint32_t)pin;
bogdanm 20:4263a77256ae 30 int port_index = pin_number >> 4;
bogdanm 20:4263a77256ae 31 int pin_index = (pin_number & 0xF);
bogdanm 20:4263a77256ae 32 GPIO_TypeDef * gpio = ((GPIO_TypeDef *) (GPIOA_BASE + (port_index << 10)));
bogdanm 20:4263a77256ae 33
bogdanm 20:4263a77256ae 34 // MODE
bogdanm 20:4263a77256ae 35 int offset = pin_index << 1;
bogdanm 20:4263a77256ae 36 gpio->MODER &= ~(0x3 << offset);
bogdanm 20:4263a77256ae 37 gpio->MODER |= mode << offset;
bogdanm 20:4263a77256ae 38
bogdanm 20:4263a77256ae 39 // Set high-speed mode
bogdanm 20:4263a77256ae 40 gpio->OSPEEDR &= ~(0x3 << offset);
bogdanm 20:4263a77256ae 41 gpio->OSPEEDR |= (0x2 << offset);
bogdanm 20:4263a77256ae 42
bogdanm 20:4263a77256ae 43 // FUNCTION
bogdanm 20:4263a77256ae 44 // Bottom seven pins are in AFR[0], top seven in AFR[1]
bogdanm 20:4263a77256ae 45 offset = (pin_index & 0x7) << 2;
bogdanm 20:4263a77256ae 46 if (pin_index <= 0x7) {
bogdanm 20:4263a77256ae 47 gpio->AFR[0] &= ~(0xF << offset);
bogdanm 20:4263a77256ae 48 gpio->AFR[0] |= func << offset;
bogdanm 20:4263a77256ae 49 }
bogdanm 20:4263a77256ae 50 else {
bogdanm 20:4263a77256ae 51 gpio->AFR[1] &= ~(0xF << offset);
bogdanm 20:4263a77256ae 52 gpio->AFR[1] |= func << offset;
bogdanm 20:4263a77256ae 53 }
bogdanm 20:4263a77256ae 54 }
bogdanm 20:4263a77256ae 55
bogdanm 20:4263a77256ae 56 void pin_mode(PinName pin, PinMode mode) {
mbed_official 227:7bd0639b8911 57 MBED_ASSERT(pin != (PinName)NC);
bogdanm 20:4263a77256ae 58
bogdanm 20:4263a77256ae 59 uint32_t pin_number = (uint32_t)pin;
bogdanm 20:4263a77256ae 60 int port_index = pin_number >> 4;
bogdanm 20:4263a77256ae 61 int pin_index = (pin_number & 0xF);
bogdanm 20:4263a77256ae 62 int offset = pin_index << 1;
bogdanm 20:4263a77256ae 63
bogdanm 20:4263a77256ae 64 GPIO_TypeDef * gpio = ((GPIO_TypeDef *) (GPIOA_BASE + (port_index << 10)));
bogdanm 20:4263a77256ae 65 if (mode == OpenDrain) {
bogdanm 20:4263a77256ae 66 gpio->OTYPER |= 1 << pin_index;
bogdanm 20:4263a77256ae 67 }
bogdanm 20:4263a77256ae 68 else {
bogdanm 20:4263a77256ae 69 gpio->OTYPER &= ~(1 << pin_index);
bogdanm 20:4263a77256ae 70 gpio->PUPDR &= ~(0x3 << offset);
bogdanm 20:4263a77256ae 71 gpio->PUPDR |= mode << offset;
bogdanm 20:4263a77256ae 72 }
bogdanm 20:4263a77256ae 73 }
bogdanm 20:4263a77256ae 74