mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/gpio_api.c@45:70eead282f0a, 2013-11-09 (annotated)
- Committer:
- mbed_official
- Date:
- Sat Nov 09 21:00:04 2013 +0000
- Revision:
- 45:70eead282f0a
- Parent:
- 30:91c1d09ada54
- Child:
- 113:65a335a675de
Synchronized with git revision cbc47292e6919f9b63653f5b0570c5cbcf5ab2ff
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 30:91c1d09ada54 | 1 | /* mbed Microcontroller Library |
mbed_official | 30:91c1d09ada54 | 2 | * Copyright (c) 2006-2013 ARM Limited |
mbed_official | 30:91c1d09ada54 | 3 | * |
mbed_official | 30:91c1d09ada54 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
mbed_official | 30:91c1d09ada54 | 5 | * you may not use this file except in compliance with the License. |
mbed_official | 30:91c1d09ada54 | 6 | * You may obtain a copy of the License at |
mbed_official | 30:91c1d09ada54 | 7 | * |
mbed_official | 30:91c1d09ada54 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
mbed_official | 30:91c1d09ada54 | 9 | * |
mbed_official | 30:91c1d09ada54 | 10 | * Unless required by applicable law or agreed to in writing, software |
mbed_official | 30:91c1d09ada54 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
mbed_official | 30:91c1d09ada54 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
mbed_official | 30:91c1d09ada54 | 13 | * See the License for the specific language governing permissions and |
mbed_official | 30:91c1d09ada54 | 14 | * limitations under the License. |
mbed_official | 30:91c1d09ada54 | 15 | */ |
mbed_official | 30:91c1d09ada54 | 16 | #include "gpio_api.h" |
mbed_official | 30:91c1d09ada54 | 17 | #include "pinmap.h" |
mbed_official | 30:91c1d09ada54 | 18 | #include "reserved_pins.h" |
mbed_official | 30:91c1d09ada54 | 19 | |
mbed_official | 30:91c1d09ada54 | 20 | static const PinName reserved_pins[] = TARGET_RESERVED_PINS; |
mbed_official | 30:91c1d09ada54 | 21 | |
mbed_official | 30:91c1d09ada54 | 22 | uint32_t gpio_set(PinName pin) { |
mbed_official | 30:91c1d09ada54 | 23 | // PIO default value of following ports are not same as others |
mbed_official | 30:91c1d09ada54 | 24 | unsigned i; |
mbed_official | 30:91c1d09ada54 | 25 | int f = 0; |
mbed_official | 30:91c1d09ada54 | 26 | |
mbed_official | 45:70eead282f0a | 27 | for (i = 0; i < sizeof(reserved_pins) / sizeof(PinName); i ++) |
mbed_official | 30:91c1d09ada54 | 28 | if (pin == reserved_pins[i]) { |
mbed_official | 30:91c1d09ada54 | 29 | f = 1; |
mbed_official | 30:91c1d09ada54 | 30 | break; |
mbed_official | 30:91c1d09ada54 | 31 | } |
mbed_official | 30:91c1d09ada54 | 32 | |
mbed_official | 30:91c1d09ada54 | 33 | pin_function(pin, f); |
mbed_official | 30:91c1d09ada54 | 34 | return ((pin & 0x0F00) >> 8); |
mbed_official | 30:91c1d09ada54 | 35 | } |
mbed_official | 30:91c1d09ada54 | 36 | |
mbed_official | 30:91c1d09ada54 | 37 | void gpio_init(gpio_t *obj, PinName pin, PinDirection direction) { |
mbed_official | 30:91c1d09ada54 | 38 | if(pin == NC) return; |
mbed_official | 30:91c1d09ada54 | 39 | |
mbed_official | 30:91c1d09ada54 | 40 | obj->pin = pin; |
mbed_official | 30:91c1d09ada54 | 41 | LPC_GPIO_TypeDef *port_reg = ((LPC_GPIO_TypeDef *) (LPC_GPIO0_BASE + (((pin & 0xF000) >> PORT_SHIFT) * 0x10000))); |
mbed_official | 30:91c1d09ada54 | 42 | |
mbed_official | 30:91c1d09ada54 | 43 | obj->reg_mask_read = &port_reg->MASKED_ACCESS[1 << gpio_set(pin)]; |
mbed_official | 30:91c1d09ada54 | 44 | obj->reg_dir = &port_reg->DIR; |
mbed_official | 30:91c1d09ada54 | 45 | obj->reg_write = &port_reg->DATA; |
mbed_official | 30:91c1d09ada54 | 46 | |
mbed_official | 30:91c1d09ada54 | 47 | gpio_dir(obj, direction); |
mbed_official | 30:91c1d09ada54 | 48 | |
mbed_official | 30:91c1d09ada54 | 49 | switch (direction) { |
mbed_official | 30:91c1d09ada54 | 50 | case PIN_OUTPUT: pin_mode(pin, PullNone); break; |
mbed_official | 30:91c1d09ada54 | 51 | case PIN_INPUT : pin_mode(pin, PullDown); break; |
mbed_official | 30:91c1d09ada54 | 52 | } |
mbed_official | 30:91c1d09ada54 | 53 | } |
mbed_official | 30:91c1d09ada54 | 54 | |
mbed_official | 30:91c1d09ada54 | 55 | void gpio_mode(gpio_t *obj, PinMode mode) { |
mbed_official | 30:91c1d09ada54 | 56 | pin_mode(obj->pin, mode); |
mbed_official | 30:91c1d09ada54 | 57 | } |
mbed_official | 30:91c1d09ada54 | 58 | |
mbed_official | 30:91c1d09ada54 | 59 | void gpio_dir(gpio_t *obj, PinDirection direction) { |
mbed_official | 30:91c1d09ada54 | 60 | int pin_number = ((obj->pin & 0x0F00) >> 8); |
mbed_official | 30:91c1d09ada54 | 61 | switch (direction) { |
mbed_official | 30:91c1d09ada54 | 62 | case PIN_INPUT : *obj->reg_dir &= ~(1 << pin_number); break; |
mbed_official | 30:91c1d09ada54 | 63 | case PIN_OUTPUT: *obj->reg_dir |= (1 << pin_number); break; |
mbed_official | 30:91c1d09ada54 | 64 | } |
mbed_official | 30:91c1d09ada54 | 65 | } |