lzbp li / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC81X/pinmap.c@614:9d86c2ae5de0, 2015-09-01 (annotated)

Committer:
mbed_official
Date:
Tue Sep 01 16:00:09 2015 +0100
Revision:
614:9d86c2ae5de0
Parent:
285:31249416b6f9 
Synchronized with git revision 483bb0197fd032956a31330bd6c6eb50758f2dda



Full URL: https://github.com/mbedmicro/mbed/commit/483bb0197fd032956a31330bd6c6eb50758f2dda/



LPC81X: reduce code size and add ARM_GCC support

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 46:bebbbd80dd87 1 /* mbed Microcontroller Library
mbed_official 46:bebbbd80dd87 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 46:bebbbd80dd87 3 *
mbed_official 46:bebbbd80dd87 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 46:bebbbd80dd87 5 * you may not use this file except in compliance with the License.
mbed_official 46:bebbbd80dd87 6 * You may obtain a copy of the License at
mbed_official 46:bebbbd80dd87 7 *
mbed_official 46:bebbbd80dd87 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 46:bebbbd80dd87 9 *
mbed_official 46:bebbbd80dd87 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 46:bebbbd80dd87 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 46:bebbbd80dd87 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 46:bebbbd80dd87 13 * See the License for the specific language governing permissions and
mbed_official 46:bebbbd80dd87 14 * limitations under the License.
mbed_official 46:bebbbd80dd87 15 */
mbed_official 227:7bd0639b8911 16 #include "mbed_assert.h"
mbed_official 46:bebbbd80dd87 17 #include "pinmap.h"
mbed_official 285:31249416b6f9 18 #include "mbed_error.h"
mbed_official 46:bebbbd80dd87 19
mbed_official 46:bebbbd80dd87 20 __IO uint32_t* IOCON_REGISTERS[18] = {
mbed_official 46:bebbbd80dd87 21 &LPC_IOCON->PIO0_0 , &LPC_IOCON->PIO0_1 , &LPC_IOCON->PIO0_2 ,
mbed_official 46:bebbbd80dd87 22 &LPC_IOCON->PIO0_3 , &LPC_IOCON->PIO0_4 , &LPC_IOCON->PIO0_5 ,
mbed_official 46:bebbbd80dd87 23 &LPC_IOCON->PIO0_6 , &LPC_IOCON->PIO0_7 , &LPC_IOCON->PIO0_8 ,
mbed_official 46:bebbbd80dd87 24 &LPC_IOCON->PIO0_9 , &LPC_IOCON->PIO0_10, &LPC_IOCON->PIO0_11,
mbed_official 46:bebbbd80dd87 25 &LPC_IOCON->PIO0_12, &LPC_IOCON->PIO0_13, &LPC_IOCON->PIO0_14,
mbed_official 46:bebbbd80dd87 26 &LPC_IOCON->PIO0_15, &LPC_IOCON->PIO0_16, &LPC_IOCON->PIO0_17,
mbed_official 46:bebbbd80dd87 27 };
mbed_official 46:bebbbd80dd87 28
mbed_official 46:bebbbd80dd87 29 void pin_function(PinName pin, int function) {
mbed_official 614:9d86c2ae5de0 30 if (function == 0) {
mbed_official 614:9d86c2ae5de0 31 // Disable initial fixed function for P0_2, P0_3 and P0_5
mbed_official 614:9d86c2ae5de0 32 uint32_t enable = 0;
mbed_official 614:9d86c2ae5de0 33 if (pin == P0_2)
mbed_official 614:9d86c2ae5de0 34 enable = 1 << 3;
mbed_official 614:9d86c2ae5de0 35 else if (pin == P0_3)
mbed_official 614:9d86c2ae5de0 36 enable = 1 << 2;
mbed_official 614:9d86c2ae5de0 37 else if (pin == P0_5)
mbed_official 614:9d86c2ae5de0 38 enable = 1 << 6;
mbed_official 614:9d86c2ae5de0 39 LPC_SWM->PINENABLE0 |= enable;
mbed_official 614:9d86c2ae5de0 40 }
mbed_official 46:bebbbd80dd87 41 }
mbed_official 46:bebbbd80dd87 42
mbed_official 46:bebbbd80dd87 43 void pin_mode(PinName pin, PinMode mode) {
mbed_official 227:7bd0639b8911 44 MBED_ASSERT(pin != (PinName)NC);
mbed_official 227:7bd0639b8911 45
mbed_official 46:bebbbd80dd87 46 if ((pin == 10) || (pin == 11)) {
mbed_official 46:bebbbd80dd87 47 // True open-drain pins can be configured for different I2C-bus speeds
mbed_official 46:bebbbd80dd87 48 return;
mbed_official 46:bebbbd80dd87 49 }
mbed_official 46:bebbbd80dd87 50
mbed_official 46:bebbbd80dd87 51 __IO uint32_t *reg = IOCON_REGISTERS[pin];
mbed_official 46:bebbbd80dd87 52
mbed_official 46:bebbbd80dd87 53 if (mode == OpenDrain) {
mbed_official 46:bebbbd80dd87 54 *reg |= (1 << 10);
mbed_official 46:bebbbd80dd87 55 } else {
mbed_official 46:bebbbd80dd87 56 uint32_t tmp = *reg;
mbed_official 46:bebbbd80dd87 57 tmp &= ~(0x3 << 3);
mbed_official 46:bebbbd80dd87 58 tmp |= (mode & 0x3) << 3;
mbed_official 46:bebbbd80dd87 59 *reg = tmp;
mbed_official 46:bebbbd80dd87 60 }
mbed_official 46:bebbbd80dd87 61 }