david dicarlo / mbed-src-FLL48

mbed library sources: Modified to operate FRDM-KL25Z at 48MHz from internal 32kHz oscillator (nothing else changed).

Fork of mbed-src by mbed official

The only file that changed is: mbed-src-FLL48/targets/cmsis/TARGET_Freescale/TARGET_KL25Z/system_MKL25Z4.h

targets/hal/TARGET_NXP/TARGET_LPC11CXX/pinmap.c@20:4263a77256ae, 2013-09-10 (annotated)

Committer:
bogdanm
Date:
Tue Sep 10 15:14:19 2013 +0300
Revision:
20:4263a77256ae
Sync with git revision 171dda705c947bf910926a0b73d6a4797802554d

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 20:4263a77256ae 1 /* mbed Microcontroller Library
bogdanm 20:4263a77256ae 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 20:4263a77256ae 3 *
bogdanm 20:4263a77256ae 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 20:4263a77256ae 5 * you may not use this file except in compliance with the License.
bogdanm 20:4263a77256ae 6 * You may obtain a copy of the License at
bogdanm 20:4263a77256ae 7 *
bogdanm 20:4263a77256ae 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 20:4263a77256ae 9 *
bogdanm 20:4263a77256ae 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 20:4263a77256ae 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 20:4263a77256ae 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 20:4263a77256ae 13 * See the License for the specific language governing permissions and
bogdanm 20:4263a77256ae 14 * limitations under the License.
bogdanm 20:4263a77256ae 15 */
bogdanm 20:4263a77256ae 16 #include "pinmap.h"
bogdanm 20:4263a77256ae 17 #include "error.h"
bogdanm 20:4263a77256ae 18
bogdanm 20:4263a77256ae 19 void pin_function(PinName pin, int function) {
bogdanm 20:4263a77256ae 20 if (pin == (uint32_t)NC) return;
bogdanm 20:4263a77256ae 21
bogdanm 20:4263a77256ae 22 uint32_t offset = (uint32_t)pin & 0xff;
bogdanm 20:4263a77256ae 23 __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + offset);
bogdanm 20:4263a77256ae 24
bogdanm 20:4263a77256ae 25 // pin function bits: [2:0] -> 111 = (0x7)
bogdanm 20:4263a77256ae 26 *reg = (*reg & ~0x7) | (function & 0x7);
bogdanm 20:4263a77256ae 27 }
bogdanm 20:4263a77256ae 28
bogdanm 20:4263a77256ae 29 void pin_mode(PinName pin, PinMode mode) {
bogdanm 20:4263a77256ae 30 if (pin == (uint32_t)NC) { return; }
bogdanm 20:4263a77256ae 31
bogdanm 20:4263a77256ae 32 uint32_t offset = (uint32_t)pin & 0xff;
bogdanm 20:4263a77256ae 33 uint32_t drain = ((uint32_t) mode & (uint32_t) OpenDrain) >> 2;
bogdanm 20:4263a77256ae 34
bogdanm 20:4263a77256ae 35 __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + offset);
bogdanm 20:4263a77256ae 36 uint32_t tmp = *reg;
bogdanm 20:4263a77256ae 37
bogdanm 20:4263a77256ae 38 // pin mode bits: [4:3] -> 11000 = (0x3 << 3)
bogdanm 20:4263a77256ae 39 tmp &= ~(0x3 << 3);
bogdanm 20:4263a77256ae 40 tmp |= (mode & 0x3) << 3;
bogdanm 20:4263a77256ae 41
bogdanm 20:4263a77256ae 42 // drain
bogdanm 20:4263a77256ae 43 tmp &= ~(0x1 << 10);
bogdanm 20:4263a77256ae 44 tmp |= drain << 10;
bogdanm 20:4263a77256ae 45
bogdanm 20:4263a77256ae 46 *reg = tmp;
bogdanm 20:4263a77256ae 47 }