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targets/TARGET_NXP/TARGET_LPC23XX/pinmap.c
- Committer:
- amithy
- Date:
- 2017-11-09
- Revision:
- 178:c26431f84b0d
- Parent:
- 149:156823d33999
File content as of revision 178:c26431f84b0d:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "mbed_assert.h" #include "pinmap.h" #include "mbed_error.h" void pin_function(PinName pin, int function) { MBED_ASSERT(pin != (PinName)NC); uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0; int index = pin_number >> 4; int offset = (pin_number & 0xF) << 1; PINCONARRAY->PINSEL[index] &= ~(0x3 << offset); PINCONARRAY->PINSEL[index] |= function << offset; } void pin_mode(PinName pin, PinMode mode) { MBED_ASSERT((pin != (PinName)NC) && (mode != OpenDrain)); uint32_t pin_number = (uint32_t)pin - (uint32_t)P0_0; int index = pin_number >> 5; int offset = pin_number & 0x1F; uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2; if (!drain) { index = pin_number >> 4; offset = (pin_number & 0xF) << 1; PINCONARRAY->PINMODE[index] &= ~(0x3 << offset); PINCONARRAY->PINMODE[index] |= (uint32_t)mode << offset; } }