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_NXP/TARGET_LPC176X/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
emilmont 10:3bc89ef62ce7 1 /* mbed Microcontroller Library
emilmont 10:3bc89ef62ce7 2 * Copyright (c) 2006-2013 ARM Limited
emilmont 10:3bc89ef62ce7 3 *
emilmont 10:3bc89ef62ce7 4 * Licensed under the Apache License, Version 2.0 (the "License");
emilmont 10:3bc89ef62ce7 5 * you may not use this file except in compliance with the License.
emilmont 10:3bc89ef62ce7 6 * You may obtain a copy of the License at
emilmont 10:3bc89ef62ce7 7 *
emilmont 10:3bc89ef62ce7 8 * http://www.apache.org/licenses/LICENSE-2.0
emilmont 10:3bc89ef62ce7 9 *
emilmont 10:3bc89ef62ce7 10 * Unless required by applicable law or agreed to in writing, software
emilmont 10:3bc89ef62ce7 11 * distributed under the License is distributed on an "AS IS" BASIS,
emilmont 10:3bc89ef62ce7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
emilmont 10:3bc89ef62ce7 13 * See the License for the specific language governing permissions and
emilmont 10:3bc89ef62ce7 14 * limitations under the License.
emilmont 10:3bc89ef62ce7 15 */
mbed_official 227:7bd0639b8911 16 #include "mbed_assert.h"
emilmont 10:3bc89ef62ce7 17 #include "pinmap.h"
mbed_official 285:31249416b6f9 18 #include "mbed_error.h"
emilmont 10:3bc89ef62ce7 19
emilmont 10:3bc89ef62ce7 20 void pin_function(PinName pin, int function) {
mbed_official 227:7bd0639b8911 21 MBED_ASSERT(pin != (PinName)NC);
mbed_official 227:7bd0639b8911 22
emilmont 10:3bc89ef62ce7 23 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
emilmont 10:3bc89ef62ce7 24 int index = pin_number >> 4;
emilmont 10:3bc89ef62ce7 25 int offset = (pin_number & 0xF) << 1;
emilmont 10:3bc89ef62ce7 26
emilmont 10:3bc89ef62ce7 27 PINCONARRAY->PINSEL[index] &= ~(0x3 << offset);
emilmont 10:3bc89ef62ce7 28 PINCONARRAY->PINSEL[index] |= function << offset;
emilmont 10:3bc89ef62ce7 29 }
emilmont 10:3bc89ef62ce7 30
emilmont 10:3bc89ef62ce7 31 void pin_mode(PinName pin, PinMode mode) {
mbed_official 227:7bd0639b8911 32 MBED_ASSERT(pin != (PinName)NC);
emilmont 10:3bc89ef62ce7 33
emilmont 10:3bc89ef62ce7 34 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
emilmont 10:3bc89ef62ce7 35 int index = pin_number >> 5;
emilmont 10:3bc89ef62ce7 36 int offset = pin_number & 0x1F;
emilmont 10:3bc89ef62ce7 37 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
emilmont 10:3bc89ef62ce7 38
emilmont 10:3bc89ef62ce7 39 PINCONARRAY->PINMODE_OD[index] &= ~(drain << offset);
emilmont 10:3bc89ef62ce7 40 PINCONARRAY->PINMODE_OD[index] |= drain << offset;
emilmont 10:3bc89ef62ce7 41
emilmont 10:3bc89ef62ce7 42 if (!drain) {
emilmont 10:3bc89ef62ce7 43 index = pin_number >> 4;
emilmont 10:3bc89ef62ce7 44 offset = (pin_number & 0xF) << 1;
emilmont 10:3bc89ef62ce7 45
emilmont 10:3bc89ef62ce7 46 PINCONARRAY->PINMODE[index] &= ~(0x3 << offset);
emilmont 10:3bc89ef62ce7 47 PINCONARRAY->PINMODE[index] |= (uint32_t)mode << offset;
emilmont 10:3bc89ef62ce7 48 }
emilmont 10:3bc89ef62ce7 49 }