mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_NXP/TARGET_LPC408X/gpio_api.c@15:4892fe388435, 2013-08-07 (annotated)
- Committer:
- bogdanm
- Date:
- Wed Aug 07 16:43:59 2013 +0300
- Revision:
- 15:4892fe388435
- Child:
- 113:65a335a675de
Added LPC4088 target and interrupt chaining code
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bogdanm | 15:4892fe388435 | 1 | /* mbed Microcontroller Library |
bogdanm | 15:4892fe388435 | 2 | * Copyright (c) 2006-2013 ARM Limited |
bogdanm | 15:4892fe388435 | 3 | * |
bogdanm | 15:4892fe388435 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
bogdanm | 15:4892fe388435 | 5 | * you may not use this file except in compliance with the License. |
bogdanm | 15:4892fe388435 | 6 | * You may obtain a copy of the License at |
bogdanm | 15:4892fe388435 | 7 | * |
bogdanm | 15:4892fe388435 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
bogdanm | 15:4892fe388435 | 9 | * |
bogdanm | 15:4892fe388435 | 10 | * Unless required by applicable law or agreed to in writing, software |
bogdanm | 15:4892fe388435 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
bogdanm | 15:4892fe388435 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
bogdanm | 15:4892fe388435 | 13 | * See the License for the specific language governing permissions and |
bogdanm | 15:4892fe388435 | 14 | * limitations under the License. |
bogdanm | 15:4892fe388435 | 15 | */ |
bogdanm | 15:4892fe388435 | 16 | #include "gpio_api.h" |
bogdanm | 15:4892fe388435 | 17 | #include "pinmap.h" |
bogdanm | 15:4892fe388435 | 18 | |
bogdanm | 15:4892fe388435 | 19 | uint32_t gpio_set(PinName pin) { |
bogdanm | 15:4892fe388435 | 20 | pin_function(pin, 0); |
bogdanm | 15:4892fe388435 | 21 | return (1 << ((int)pin & 0x1F)); |
bogdanm | 15:4892fe388435 | 22 | } |
bogdanm | 15:4892fe388435 | 23 | |
bogdanm | 15:4892fe388435 | 24 | void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) { |
bogdanm | 15:4892fe388435 | 25 | if (pin == NC) return; |
bogdanm | 15:4892fe388435 | 26 | |
bogdanm | 15:4892fe388435 | 27 | obj->pin = pin; |
bogdanm | 15:4892fe388435 | 28 | obj->mask = gpio_set(pin); |
bogdanm | 15:4892fe388435 | 29 | |
bogdanm | 15:4892fe388435 | 30 | LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *) ((int)(LPC_GPIO0_BASE+pin) & ~0x1F); |
bogdanm | 15:4892fe388435 | 31 | |
bogdanm | 15:4892fe388435 | 32 | obj->reg_set = &port_reg->SET; |
bogdanm | 15:4892fe388435 | 33 | obj->reg_clr = &port_reg->CLR; |
bogdanm | 15:4892fe388435 | 34 | obj->reg_in = &port_reg->PIN; |
bogdanm | 15:4892fe388435 | 35 | obj->reg_dir = &port_reg->DIR; |
bogdanm | 15:4892fe388435 | 36 | |
bogdanm | 15:4892fe388435 | 37 | gpio_dir(obj, direction); |
bogdanm | 15:4892fe388435 | 38 | switch (direction) { |
bogdanm | 15:4892fe388435 | 39 | case PIN_OUTPUT: pin_mode(pin, PullNone); break; |
bogdanm | 15:4892fe388435 | 40 | case PIN_INPUT : pin_mode(pin, PullDown); break; |
bogdanm | 15:4892fe388435 | 41 | } |
bogdanm | 15:4892fe388435 | 42 | } |
bogdanm | 15:4892fe388435 | 43 | |
bogdanm | 15:4892fe388435 | 44 | void gpio_mode(gpio_t *obj, PinMode mode) { |
bogdanm | 15:4892fe388435 | 45 | pin_mode(obj->pin, mode); |
bogdanm | 15:4892fe388435 | 46 | } |
bogdanm | 15:4892fe388435 | 47 | |
bogdanm | 15:4892fe388435 | 48 | void gpio_dir(gpio_t *obj, PinDirection direction) { |
bogdanm | 15:4892fe388435 | 49 | switch (direction) { |
bogdanm | 15:4892fe388435 | 50 | case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break; |
bogdanm | 15:4892fe388435 | 51 | case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break; |
bogdanm | 15:4892fe388435 | 52 | } |
bogdanm | 15:4892fe388435 | 53 | } |