mbed library sources
Fork of mbed-src by
targets/hal/TARGET_NXP/TARGET_LPC43XX/gpio_api.c@227:7bd0639b8911, 2014-06-11 (annotated)
- Committer:
- mbed_official
- Date:
- Wed Jun 11 16:00:09 2014 +0100
- Revision:
- 227:7bd0639b8911
- Parent:
- 113:65a335a675de
- Child:
- 294:78f9587bb26d
Synchronized with git revision d58d532ebc0e0a96f4fffb8edefc082b71b964af
Full URL: https://github.com/mbedmicro/mbed/commit/d58d532ebc0e0a96f4fffb8edefc082b71b964af/
Who changed what in which revision?
User | Revision | Line number | New 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 | * Ported to NXP LPC43XX by Micromint USA <support@micromint.com> |
bogdanm | 20:4263a77256ae | 17 | */ |
mbed_official | 227:7bd0639b8911 | 18 | #include "mbed_assert.h" |
bogdanm | 20:4263a77256ae | 19 | #include "gpio_api.h" |
bogdanm | 20:4263a77256ae | 20 | #include "pinmap.h" |
bogdanm | 20:4263a77256ae | 21 | |
bogdanm | 20:4263a77256ae | 22 | uint32_t gpio_set(PinName pin) { |
mbed_official | 227:7bd0639b8911 | 23 | MBED_ASSERT(pin != (PinName)NC); |
bogdanm | 20:4263a77256ae | 24 | int f = 0; |
bogdanm | 20:4263a77256ae | 25 | unsigned int port = (unsigned int)MBED_GPIO_PORT(pin); |
bogdanm | 20:4263a77256ae | 26 | |
bogdanm | 20:4263a77256ae | 27 | f = SCU_PINIO_FAST | ((port > 4) ? (4) : (0)); |
bogdanm | 20:4263a77256ae | 28 | pin_function(pin, f); |
bogdanm | 20:4263a77256ae | 29 | |
bogdanm | 20:4263a77256ae | 30 | return (1 << ((int)pin & 0x1F)); |
bogdanm | 20:4263a77256ae | 31 | } |
bogdanm | 20:4263a77256ae | 32 | |
mbed_official | 113:65a335a675de | 33 | void gpio_init(gpio_t *obj, PinName pin) { |
bogdanm | 20:4263a77256ae | 34 | obj->pin = pin; |
mbed_official | 227:7bd0639b8911 | 35 | if (pin == (PinName)NC) |
mbed_official | 227:7bd0639b8911 | 36 | return; |
mbed_official | 227:7bd0639b8911 | 37 | |
bogdanm | 20:4263a77256ae | 38 | obj->mask = gpio_set(pin); |
bogdanm | 20:4263a77256ae | 39 | |
bogdanm | 20:4263a77256ae | 40 | LPC_GPIO_T *port_reg = (LPC_GPIO_T *) (LPC_GPIO_PORT_BASE); |
bogdanm | 20:4263a77256ae | 41 | unsigned int port = (unsigned int)MBED_GPIO_PORT(pin); |
bogdanm | 20:4263a77256ae | 42 | |
bogdanm | 20:4263a77256ae | 43 | obj->reg_set = &port_reg->SET[port]; |
bogdanm | 20:4263a77256ae | 44 | obj->reg_clr = &port_reg->CLR[port]; |
bogdanm | 20:4263a77256ae | 45 | obj->reg_in = &port_reg->PIN[port]; |
bogdanm | 20:4263a77256ae | 46 | obj->reg_dir = &port_reg->DIR[port]; |
bogdanm | 20:4263a77256ae | 47 | } |
bogdanm | 20:4263a77256ae | 48 | |
bogdanm | 20:4263a77256ae | 49 | void gpio_mode(gpio_t *obj, PinMode mode) { |
bogdanm | 20:4263a77256ae | 50 | pin_mode(obj->pin, mode); |
bogdanm | 20:4263a77256ae | 51 | } |
bogdanm | 20:4263a77256ae | 52 | |
bogdanm | 20:4263a77256ae | 53 | void gpio_dir(gpio_t *obj, PinDirection direction) { |
mbed_official | 227:7bd0639b8911 | 54 | MBED_ASSERT(obj->pin != (PinName)NC); |
bogdanm | 20:4263a77256ae | 55 | switch (direction) { |
mbed_official | 227:7bd0639b8911 | 56 | case PIN_INPUT : |
mbed_official | 227:7bd0639b8911 | 57 | *obj->reg_dir &= ~obj->mask; |
mbed_official | 227:7bd0639b8911 | 58 | break; |
mbed_official | 227:7bd0639b8911 | 59 | case PIN_OUTPUT: |
mbed_official | 227:7bd0639b8911 | 60 | *obj->reg_dir |= obj->mask; |
mbed_official | 227:7bd0639b8911 | 61 | break; |
bogdanm | 20:4263a77256ae | 62 | } |
bogdanm | 20:4263a77256ae | 63 | } |