mbed library sources
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targets/hal/TARGET_NXP/TARGET_LPC81X/gpio_api.c@613:bc40b8d2aec4, 2015-08-20 (annotated)
- Committer:
- mbed_official
- Date:
- Thu Aug 20 10:45:13 2015 +0100
- Revision:
- 613:bc40b8d2aec4
- Parent:
- 227:7bd0639b8911
Synchronized with git revision 92ca8c7b60a283b6bb60eb65b183dac1599f0ade
Full URL: https://github.com/mbedmicro/mbed/commit/92ca8c7b60a283b6bb60eb65b183dac1599f0ade/
Nordic: update application start address in GCC linker script
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 46:bebbbd80dd87 | 1 | /* mbed Microcontroller Library |
mbed_official | 46:bebbbd80dd87 | 2 | * Copyright (c) 2006-2013 ARM Limited |
mbed_official | 46:bebbbd80dd87 | 3 | * |
mbed_official | 46:bebbbd80dd87 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
mbed_official | 46:bebbbd80dd87 | 5 | * you may not use this file except in compliance with the License. |
mbed_official | 46:bebbbd80dd87 | 6 | * You may obtain a copy of the License at |
mbed_official | 46:bebbbd80dd87 | 7 | * |
mbed_official | 46:bebbbd80dd87 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
mbed_official | 46:bebbbd80dd87 | 9 | * |
mbed_official | 46:bebbbd80dd87 | 10 | * Unless required by applicable law or agreed to in writing, software |
mbed_official | 46:bebbbd80dd87 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
mbed_official | 46:bebbbd80dd87 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
mbed_official | 46:bebbbd80dd87 | 13 | * See the License for the specific language governing permissions and |
mbed_official | 46:bebbbd80dd87 | 14 | * limitations under the License. |
mbed_official | 46:bebbbd80dd87 | 15 | */ |
mbed_official | 227:7bd0639b8911 | 16 | #include "mbed_assert.h" |
mbed_official | 46:bebbbd80dd87 | 17 | #include "gpio_api.h" |
mbed_official | 46:bebbbd80dd87 | 18 | #include "pinmap.h" |
mbed_official | 46:bebbbd80dd87 | 19 | |
mbed_official | 46:bebbbd80dd87 | 20 | static int gpio_enabled = 0; |
mbed_official | 46:bebbbd80dd87 | 21 | static void gpio_enable(void) { |
mbed_official | 46:bebbbd80dd87 | 22 | gpio_enabled = 1; |
mbed_official | 46:bebbbd80dd87 | 23 | |
mbed_official | 46:bebbbd80dd87 | 24 | /* Enable AHB clock to the GPIO domain. */ |
mbed_official | 46:bebbbd80dd87 | 25 | LPC_SYSCON->SYSAHBCLKCTRL |= (1<<6); |
mbed_official | 46:bebbbd80dd87 | 26 | |
mbed_official | 46:bebbbd80dd87 | 27 | /* Peripheral reset control to GPIO and GPIO INT, a "1" bring it out of reset. */ |
mbed_official | 46:bebbbd80dd87 | 28 | LPC_SYSCON->PRESETCTRL &= ~(0x1<<10); |
mbed_official | 46:bebbbd80dd87 | 29 | LPC_SYSCON->PRESETCTRL |= (0x1<<10); |
mbed_official | 46:bebbbd80dd87 | 30 | } |
mbed_official | 46:bebbbd80dd87 | 31 | |
mbed_official | 46:bebbbd80dd87 | 32 | uint32_t gpio_set(PinName pin) { |
mbed_official | 46:bebbbd80dd87 | 33 | int f = 0; |
mbed_official | 46:bebbbd80dd87 | 34 | |
mbed_official | 46:bebbbd80dd87 | 35 | if (!gpio_enabled) |
mbed_official | 46:bebbbd80dd87 | 36 | gpio_enable(); |
mbed_official | 46:bebbbd80dd87 | 37 | |
mbed_official | 46:bebbbd80dd87 | 38 | pin_function(pin, f); |
mbed_official | 46:bebbbd80dd87 | 39 | |
mbed_official | 46:bebbbd80dd87 | 40 | return (1 << ((int)pin & 0x1F)); |
mbed_official | 46:bebbbd80dd87 | 41 | } |
mbed_official | 46:bebbbd80dd87 | 42 | |
mbed_official | 113:65a335a675de | 43 | void gpio_init(gpio_t *obj, PinName pin) { |
mbed_official | 46:bebbbd80dd87 | 44 | obj->pin = pin; |
mbed_official | 227:7bd0639b8911 | 45 | if (pin == (PinName)NC) |
mbed_official | 227:7bd0639b8911 | 46 | return; |
mbed_official | 227:7bd0639b8911 | 47 | |
mbed_official | 46:bebbbd80dd87 | 48 | obj->mask = gpio_set(pin); |
mbed_official | 46:bebbbd80dd87 | 49 | |
mbed_official | 46:bebbbd80dd87 | 50 | obj->reg_set = &LPC_GPIO_PORT->SET0; |
mbed_official | 46:bebbbd80dd87 | 51 | obj->reg_clr = &LPC_GPIO_PORT->CLR0; |
mbed_official | 46:bebbbd80dd87 | 52 | obj->reg_in = &LPC_GPIO_PORT->PIN0; |
mbed_official | 46:bebbbd80dd87 | 53 | obj->reg_dir = &LPC_GPIO_PORT->DIR0; |
mbed_official | 46:bebbbd80dd87 | 54 | } |
mbed_official | 46:bebbbd80dd87 | 55 | |
mbed_official | 46:bebbbd80dd87 | 56 | void gpio_mode(gpio_t *obj, PinMode mode) { |
mbed_official | 46:bebbbd80dd87 | 57 | pin_mode(obj->pin, mode); |
mbed_official | 46:bebbbd80dd87 | 58 | } |
mbed_official | 46:bebbbd80dd87 | 59 | |
mbed_official | 46:bebbbd80dd87 | 60 | void gpio_dir(gpio_t *obj, PinDirection direction) { |
mbed_official | 227:7bd0639b8911 | 61 | MBED_ASSERT(obj->pin != (PinName)NC); |
mbed_official | 46:bebbbd80dd87 | 62 | switch (direction) { |
mbed_official | 227:7bd0639b8911 | 63 | case PIN_INPUT : |
mbed_official | 227:7bd0639b8911 | 64 | *obj->reg_dir &= ~obj->mask; |
mbed_official | 227:7bd0639b8911 | 65 | break; |
mbed_official | 227:7bd0639b8911 | 66 | case PIN_OUTPUT: |
mbed_official | 227:7bd0639b8911 | 67 | *obj->reg_dir |= obj->mask; |
mbed_official | 227:7bd0639b8911 | 68 | break; |
mbed_official | 46:bebbbd80dd87 | 69 | } |
mbed_official | 46:bebbbd80dd87 | 70 | } |