Jolyon Hill / mbed-dev

Changes to support running on smaller memory LPC device LPC1764

Fork of mbed-dev by mbed official

targets/hal/TARGET_NXP/TARGET_LPC176X/pinmap.c@149:6f3fb14e6942, 2016-10-10 (annotated)

Committer:
jolyon
Date:
Mon Oct 10 14:36:54 2016 +0000
Revision:
149:6f3fb14e6942
Parent:
144:ef7eb2e8f9f7 
Working with LPC1764 & inverted LEDS

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #include "mbed_assert.h"
<> 144:ef7eb2e8f9f7 17 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 18 #include "mbed_error.h"
<> 144:ef7eb2e8f9f7 19
<> 144:ef7eb2e8f9f7 20 void pin_function(PinName pin, int function) {
<> 144:ef7eb2e8f9f7 21 MBED_ASSERT(pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 22
<> 144:ef7eb2e8f9f7 23 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
<> 144:ef7eb2e8f9f7 24 int index = pin_number >> 4;
<> 144:ef7eb2e8f9f7 25 int offset = (pin_number & 0xF) << 1;
<> 144:ef7eb2e8f9f7 26
<> 144:ef7eb2e8f9f7 27 PINCONARRAY->PINSEL[index] &= ~(0x3 << offset);
<> 144:ef7eb2e8f9f7 28 PINCONARRAY->PINSEL[index] |= function << offset;
<> 144:ef7eb2e8f9f7 29 }
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 void pin_mode(PinName pin, PinMode mode) {
<> 144:ef7eb2e8f9f7 32 MBED_ASSERT(pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 33
<> 144:ef7eb2e8f9f7 34 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
<> 144:ef7eb2e8f9f7 35 int index = pin_number >> 5;
<> 144:ef7eb2e8f9f7 36 int offset = pin_number & 0x1F;
<> 144:ef7eb2e8f9f7 37 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
<> 144:ef7eb2e8f9f7 38
<> 144:ef7eb2e8f9f7 39 PINCONARRAY->PINMODE_OD[index] &= ~(drain << offset);
<> 144:ef7eb2e8f9f7 40 PINCONARRAY->PINMODE_OD[index] |= drain << offset;
<> 144:ef7eb2e8f9f7 41
<> 144:ef7eb2e8f9f7 42 if (!drain) {
<> 144:ef7eb2e8f9f7 43 index = pin_number >> 4;
<> 144:ef7eb2e8f9f7 44 offset = (pin_number & 0xF) << 1;
<> 144:ef7eb2e8f9f7 45
<> 144:ef7eb2e8f9f7 46 PINCONARRAY->PINMODE[index] &= ~(0x3 << offset);
<> 144:ef7eb2e8f9f7 47 PINCONARRAY->PINMODE[index] |= (uint32_t)mode << offset;
<> 144:ef7eb2e8f9f7 48 }
<> 144:ef7eb2e8f9f7 49 }