mbed library sources modified for open wear
Dependents: openwear-lifelogger-example
Fork of mbed-src by
targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/gpio_api.c
- Committer:
- janekm
- Date:
- 2014-09-16
- Revision:
- 310:6188e0254baa
- Parent:
- 227:7bd0639b8911
File content as of revision 310:6188e0254baa:
/* 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 "gpio_api.h" #include "pinmap.h" #include "reserved_pins.h" static const PinName reserved_pins[] = TARGET_RESERVED_PINS; uint32_t gpio_set(PinName pin) { MBED_ASSERT(pin != (PinName)NC); // PIO default value of following ports are not same as others unsigned i; int f = 0; for (i = 0; i < sizeof(reserved_pins) / sizeof(PinName); i ++) { if (pin == reserved_pins[i]) { f = 1; break; } } pin_function(pin, f); return ((pin & 0x0F00) >> 8); } void gpio_init(gpio_t *obj, PinName pin) { obj->pin = pin; if (pin == (PinName)NC) return; LPC_GPIO_TypeDef *port_reg = ((LPC_GPIO_TypeDef *) (LPC_GPIO0_BASE + (((pin & 0xF000) >> PORT_SHIFT) * 0x10000))); obj->reg_mask_read = &port_reg->MASKED_ACCESS[1 << gpio_set(pin)]; obj->reg_dir = &port_reg->DIR; obj->reg_write = &port_reg->DATA; } void gpio_mode(gpio_t *obj, PinMode mode) { pin_mode(obj->pin, mode); } void gpio_dir(gpio_t *obj, PinDirection direction) { MBED_ASSERT(obj->pin != (PinName)NC); int pin_number = ((obj->pin & 0x0F00) >> 8); switch (direction) { case PIN_INPUT : *obj->reg_dir &= ~(1 << pin_number); break; case PIN_OUTPUT: *obj->reg_dir |= (1 << pin_number); break; } }