Greg Steiert / maxim-dev

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Dependents:   MAX34417_demo MAXREFDES1265 MAXREFDES1265

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targets/TARGET_NXP/TARGET_LPC11U6X/pinmap.c@164:2e7515f8c45d, 2017-03-24 (annotated)

Committer:
switches
Date:
Fri Mar 24 15:15:13 2017 +0000
Revision:
164:2e7515f8c45d
Parent:
149:156823d33999 
Added low level init to clear IO registers

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 __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + (pin & 0x1FF));
<> 144:ef7eb2e8f9f7 23
<> 144:ef7eb2e8f9f7 24 // pin function bits: [2:0] -> 111 = (0x7)
<> 144:ef7eb2e8f9f7 25 *reg = (*reg & ~0x7) | (function & 0x7);
<> 144:ef7eb2e8f9f7 26 }
<> 144:ef7eb2e8f9f7 27
<> 144:ef7eb2e8f9f7 28 void pin_mode(PinName pin, PinMode mode) {
<> 144:ef7eb2e8f9f7 29 MBED_ASSERT(pin != (PinName)NC);
<> 144:ef7eb2e8f9f7 30 if ((pin == P0_4) || (pin == P0_5)) {
<> 144:ef7eb2e8f9f7 31 // The true open-drain pins PIO0_4 and PIO0_5 can be configured for different I2C-bus speeds.
<> 144:ef7eb2e8f9f7 32 return;
<> 144:ef7eb2e8f9f7 33 }
<> 144:ef7eb2e8f9f7 34
<> 144:ef7eb2e8f9f7 35 __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + (pin & 0x1FF));
<> 144:ef7eb2e8f9f7 36
<> 144:ef7eb2e8f9f7 37 if (mode == OpenDrain) {
<> 144:ef7eb2e8f9f7 38 *reg |= (1 << 10);
<> 144:ef7eb2e8f9f7 39 } else {
<> 144:ef7eb2e8f9f7 40 uint32_t tmp = *reg;
<> 144:ef7eb2e8f9f7 41 tmp &= ~(0x3 << 3);
<> 144:ef7eb2e8f9f7 42 tmp |= (mode & 0x3) << 3;
<> 144:ef7eb2e8f9f7 43 *reg = tmp;
<> 144:ef7eb2e8f9f7 44 }
<> 144:ef7eb2e8f9f7 45 }