mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_NXP/TARGET_LPC11U6X/pinmap.c
- Committer:
- shaoziyang
- Date:
- 2014-09-13
- Revision:
- 323:9e901b0a5aa1
- Parent:
- 285:31249416b6f9
File content as of revision 323:9e901b0a5aa1:
/* 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); __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + (pin & 0x1FF)); // pin function bits: [2:0] -> 111 = (0x7) *reg = (*reg & ~0x7) | (function & 0x7); } void pin_mode(PinName pin, PinMode mode) { MBED_ASSERT(pin != (PinName)NC); if ((pin == P0_4) || (pin == P0_5)) { // The true open-drain pins PIO0_4 and PIO0_5 can be configured for different I2C-bus speeds. return; } __IO uint32_t *reg = (__IO uint32_t*)(LPC_IOCON_BASE + (pin & 0x1FF)); if (mode == OpenDrain) { *reg |= (1 << 10); } else { uint32_t tmp = *reg; tmp &= ~(0x3 << 3); tmp |= (mode & 0x3) << 3; *reg = tmp; } }