EL4121 Embedded System / mbed-os

mbed-os

Dependents:   cobaLCDJoyMotor_Thread odometry_omni_3roda_v3 odometry_omni_3roda_v1 odometry_omni_3roda_v2 ... more

targets/TARGET_NXP/TARGET_LPC176X/pinmap.c@0:b74591d5ab33, 2017-12-11 (annotated)

Committer:
be_bryan
Date:
Mon Dec 11 17:54:04 2017 +0000
Revision:
0:b74591d5ab33
motor ++

Who changed what in which revision?

UserRevisionLine numberNew contents of line
be_bryan 0:b74591d5ab33 1 /* mbed Microcontroller Library
be_bryan 0:b74591d5ab33 2 * Copyright (c) 2006-2013 ARM Limited
be_bryan 0:b74591d5ab33 3 *
be_bryan 0:b74591d5ab33 4 * Licensed under the Apache License, Version 2.0 (the "License");
be_bryan 0:b74591d5ab33 5 * you may not use this file except in compliance with the License.
be_bryan 0:b74591d5ab33 6 * You may obtain a copy of the License at
be_bryan 0:b74591d5ab33 7 *
be_bryan 0:b74591d5ab33 8 * http://www.apache.org/licenses/LICENSE-2.0
be_bryan 0:b74591d5ab33 9 *
be_bryan 0:b74591d5ab33 10 * Unless required by applicable law or agreed to in writing, software
be_bryan 0:b74591d5ab33 11 * distributed under the License is distributed on an "AS IS" BASIS,
be_bryan 0:b74591d5ab33 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
be_bryan 0:b74591d5ab33 13 * See the License for the specific language governing permissions and
be_bryan 0:b74591d5ab33 14 * limitations under the License.
be_bryan 0:b74591d5ab33 15 */
be_bryan 0:b74591d5ab33 16 #include "mbed_assert.h"
be_bryan 0:b74591d5ab33 17 #include "pinmap.h"
be_bryan 0:b74591d5ab33 18 #include "mbed_error.h"
be_bryan 0:b74591d5ab33 19
be_bryan 0:b74591d5ab33 20 void pin_function(PinName pin, int function) {
be_bryan 0:b74591d5ab33 21 MBED_ASSERT(pin != (PinName)NC);
be_bryan 0:b74591d5ab33 22
be_bryan 0:b74591d5ab33 23 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
be_bryan 0:b74591d5ab33 24 int index = pin_number >> 4;
be_bryan 0:b74591d5ab33 25 int offset = (pin_number & 0xF) << 1;
be_bryan 0:b74591d5ab33 26
be_bryan 0:b74591d5ab33 27 PINCONARRAY->PINSEL[index] &= ~(0x3 << offset);
be_bryan 0:b74591d5ab33 28 PINCONARRAY->PINSEL[index] |= function << offset;
be_bryan 0:b74591d5ab33 29 }
be_bryan 0:b74591d5ab33 30
be_bryan 0:b74591d5ab33 31 void pin_mode(PinName pin, PinMode mode) {
be_bryan 0:b74591d5ab33 32 MBED_ASSERT(pin != (PinName)NC);
be_bryan 0:b74591d5ab33 33
be_bryan 0:b74591d5ab33 34 uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0;
be_bryan 0:b74591d5ab33 35 int index = pin_number >> 5;
be_bryan 0:b74591d5ab33 36 int offset = pin_number & 0x1F;
be_bryan 0:b74591d5ab33 37 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
be_bryan 0:b74591d5ab33 38
be_bryan 0:b74591d5ab33 39 PINCONARRAY->PINMODE_OD[index] &= ~(drain << offset);
be_bryan 0:b74591d5ab33 40 PINCONARRAY->PINMODE_OD[index] |= drain << offset;
be_bryan 0:b74591d5ab33 41
be_bryan 0:b74591d5ab33 42 if (!drain) {
be_bryan 0:b74591d5ab33 43 index = pin_number >> 4;
be_bryan 0:b74591d5ab33 44 offset = (pin_number & 0xF) << 1;
be_bryan 0:b74591d5ab33 45
be_bryan 0:b74591d5ab33 46 PINCONARRAY->PINMODE[index] &= ~(0x3 << offset);
be_bryan 0:b74591d5ab33 47 PINCONARRAY->PINMODE[index] |= (uint32_t)mode << offset;
be_bryan 0:b74591d5ab33 48 }
be_bryan 0:b74591d5ab33 49 }