Ermanno Brusadin / mbed

mbed library sources

Dependents:   FRDM-KL46Z_LCD_Test FRDM-KL46Z_LCD_Test FRDM-KL46Z_Plantilla FRDM-KL46Z_Plantilla ... more

targets/hal/TARGET_NXP/TARGET_LPC13XX/pinmap.c@0:6bc4ac881c8e, 2016-07-28 (annotated)

Committer:
ebrus
Date:
Thu Jul 28 15:56:34 2016 +0000
Revision:
0:6bc4ac881c8e
1;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ebrus 0:6bc4ac881c8e 1 /* mbed Microcontroller Library
ebrus 0:6bc4ac881c8e 2 * Copyright (c) 2006-2013 ARM Limited
ebrus 0:6bc4ac881c8e 3 *
ebrus 0:6bc4ac881c8e 4 * Licensed under the Apache License, Version 2.0 (the "License");
ebrus 0:6bc4ac881c8e 5 * you may not use this file except in compliance with the License.
ebrus 0:6bc4ac881c8e 6 * You may obtain a copy of the License at
ebrus 0:6bc4ac881c8e 7 *
ebrus 0:6bc4ac881c8e 8 * http://www.apache.org/licenses/LICENSE-2.0
ebrus 0:6bc4ac881c8e 9 *
ebrus 0:6bc4ac881c8e 10 * Unless required by applicable law or agreed to in writing, software
ebrus 0:6bc4ac881c8e 11 * distributed under the License is distributed on an "AS IS" BASIS,
ebrus 0:6bc4ac881c8e 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ebrus 0:6bc4ac881c8e 13 * See the License for the specific language governing permissions and
ebrus 0:6bc4ac881c8e 14 * limitations under the License.
ebrus 0:6bc4ac881c8e 15 */
ebrus 0:6bc4ac881c8e 16 #include "mbed_assert.h"
ebrus 0:6bc4ac881c8e 17 #include "pinmap.h"
ebrus 0:6bc4ac881c8e 18 #include "mbed_error.h"
ebrus 0:6bc4ac881c8e 19
ebrus 0:6bc4ac881c8e 20 #define LPC_IOCON0_BASE (LPC_IOCON_BASE)
ebrus 0:6bc4ac881c8e 21 #define LPC_IOCON1_BASE (LPC_IOCON_BASE + 0x60)
ebrus 0:6bc4ac881c8e 22
ebrus 0:6bc4ac881c8e 23 void pin_function(PinName pin, int function) {
ebrus 0:6bc4ac881c8e 24 MBED_ASSERT(pin != (PinName)NC);
ebrus 0:6bc4ac881c8e 25
ebrus 0:6bc4ac881c8e 26 uint32_t pin_number = (uint32_t)pin;
ebrus 0:6bc4ac881c8e 27
ebrus 0:6bc4ac881c8e 28 __IO uint32_t *reg = (pin_number < 32) ?
ebrus 0:6bc4ac881c8e 29 (__IO uint32_t*)(LPC_IOCON0_BASE + 4 * pin_number) :
ebrus 0:6bc4ac881c8e 30 (__IO uint32_t*)(LPC_IOCON1_BASE + 4 * (pin_number - 32));
ebrus 0:6bc4ac881c8e 31
ebrus 0:6bc4ac881c8e 32 // pin function bits: [2:0] -> 111 = (0x7)
ebrus 0:6bc4ac881c8e 33 *reg = (*reg & ~0x7) | (function & 0x7);
ebrus 0:6bc4ac881c8e 34 }
ebrus 0:6bc4ac881c8e 35
ebrus 0:6bc4ac881c8e 36 void pin_mode(PinName pin, PinMode mode) {
ebrus 0:6bc4ac881c8e 37 MBED_ASSERT(pin != (PinName)NC);
ebrus 0:6bc4ac881c8e 38
ebrus 0:6bc4ac881c8e 39 uint32_t pin_number = (uint32_t)pin;
ebrus 0:6bc4ac881c8e 40 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
ebrus 0:6bc4ac881c8e 41
ebrus 0:6bc4ac881c8e 42 __IO uint32_t *reg = (pin_number < 32) ?
ebrus 0:6bc4ac881c8e 43 (__IO uint32_t*)(LPC_IOCON0_BASE + 4 * pin_number) :
ebrus 0:6bc4ac881c8e 44 (__IO uint32_t*)(LPC_IOCON1_BASE + 4 * (pin_number - 32));
ebrus 0:6bc4ac881c8e 45 uint32_t tmp = *reg;
ebrus 0:6bc4ac881c8e 46
ebrus 0:6bc4ac881c8e 47 // pin mode bits: [4:3] -> 11000 = (0x3 << 3)
ebrus 0:6bc4ac881c8e 48 tmp &= ~(0x3 << 3);
ebrus 0:6bc4ac881c8e 49 tmp |= (mode & 0x3) << 3;
ebrus 0:6bc4ac881c8e 50
ebrus 0:6bc4ac881c8e 51 // drain
ebrus 0:6bc4ac881c8e 52 tmp &= ~(0x1 << 10);
ebrus 0:6bc4ac881c8e 53 tmp |= drain << 10;
ebrus 0:6bc4ac881c8e 54
ebrus 0:6bc4ac881c8e 55 *reg = tmp;
ebrus 0:6bc4ac881c8e 56 }