Changes to support running on smaller memory LPC device LPC1764
Fork of mbed-dev by
targets/hal/TARGET_NXP/TARGET_LPC2460/pinmap.c@0:9b334a45a8ff, 2015-10-01 (annotated)
- Committer:
- bogdanm
- Date:
- Thu Oct 01 15:25:22 2015 +0300
- Revision:
- 0:9b334a45a8ff
- Child:
- 144:ef7eb2e8f9f7
Initial commit on mbed-dev
Replaces mbed-src (now inactive)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bogdanm | 0:9b334a45a8ff | 1 | /* mbed Microcontroller Library |
bogdanm | 0:9b334a45a8ff | 2 | * Copyright (c) 2006-2015 ARM Limited |
bogdanm | 0:9b334a45a8ff | 3 | * |
bogdanm | 0:9b334a45a8ff | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
bogdanm | 0:9b334a45a8ff | 5 | * you may not use this file except in compliance with the License. |
bogdanm | 0:9b334a45a8ff | 6 | * You may obtain a copy of the License at |
bogdanm | 0:9b334a45a8ff | 7 | * |
bogdanm | 0:9b334a45a8ff | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
bogdanm | 0:9b334a45a8ff | 9 | * |
bogdanm | 0:9b334a45a8ff | 10 | * Unless required by applicable law or agreed to in writing, software |
bogdanm | 0:9b334a45a8ff | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
bogdanm | 0:9b334a45a8ff | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
bogdanm | 0:9b334a45a8ff | 13 | * See the License for the specific language governing permissions and |
bogdanm | 0:9b334a45a8ff | 14 | * limitations under the License. |
bogdanm | 0:9b334a45a8ff | 15 | */ |
bogdanm | 0:9b334a45a8ff | 16 | #include "mbed_assert.h" |
bogdanm | 0:9b334a45a8ff | 17 | #include "pinmap.h" |
bogdanm | 0:9b334a45a8ff | 18 | #include "mbed_error.h" |
bogdanm | 0:9b334a45a8ff | 19 | |
bogdanm | 0:9b334a45a8ff | 20 | void pin_function(PinName pin, int function) { |
bogdanm | 0:9b334a45a8ff | 21 | MBED_ASSERT(pin != (PinName)NC); |
bogdanm | 0:9b334a45a8ff | 22 | |
bogdanm | 0:9b334a45a8ff | 23 | uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0; |
bogdanm | 0:9b334a45a8ff | 24 | int index = pin_number >> 4; |
bogdanm | 0:9b334a45a8ff | 25 | int offset = (pin_number & 0xF) << 1; |
bogdanm | 0:9b334a45a8ff | 26 | |
bogdanm | 0:9b334a45a8ff | 27 | PINCONARRAY->PINSEL[index] &= ~(0x3 << offset); |
bogdanm | 0:9b334a45a8ff | 28 | PINCONARRAY->PINSEL[index] |= function << offset; |
bogdanm | 0:9b334a45a8ff | 29 | } |
bogdanm | 0:9b334a45a8ff | 30 | |
bogdanm | 0:9b334a45a8ff | 31 | void pin_mode(PinName pin, PinMode mode) { |
bogdanm | 0:9b334a45a8ff | 32 | MBED_ASSERT((pin != (PinName)NC) && (mode != OpenDrain)); |
bogdanm | 0:9b334a45a8ff | 33 | |
bogdanm | 0:9b334a45a8ff | 34 | uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0; |
bogdanm | 0:9b334a45a8ff | 35 | int index = pin_number >> 5; |
bogdanm | 0:9b334a45a8ff | 36 | int offset = pin_number & 0x1F; |
bogdanm | 0:9b334a45a8ff | 37 | uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2; |
bogdanm | 0:9b334a45a8ff | 38 | |
bogdanm | 0:9b334a45a8ff | 39 | if (!drain) { |
bogdanm | 0:9b334a45a8ff | 40 | index = pin_number >> 4; |
bogdanm | 0:9b334a45a8ff | 41 | offset = (pin_number & 0xF) << 1; |
bogdanm | 0:9b334a45a8ff | 42 | |
bogdanm | 0:9b334a45a8ff | 43 | PINCONARRAY->PINMODE[index] &= ~(0x3 << offset); |
bogdanm | 0:9b334a45a8ff | 44 | PINCONARRAY->PINMODE[index] |= (uint32_t)mode << offset; |
bogdanm | 0:9b334a45a8ff | 45 | } |
bogdanm | 0:9b334a45a8ff | 46 | } |