shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/gpio_api.c@323:9e901b0a5aa1, 2014-09-13 (annotated)

Committer:
shaoziyang
Date:
Sat Sep 13 14:25:46 2014 +0000
Revision:
323:9e901b0a5aa1
Parent:
227:7bd0639b8911 
test with CLOCK_SETUP = 0

Who changed what in which revision?

UserRevisionLine numberNew 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 227:7bd0639b8911 16 #include "mbed_assert.h"
mbed_official 30:91c1d09ada54 17 #include "gpio_api.h"
mbed_official 30:91c1d09ada54 18 #include "pinmap.h"
mbed_official 30:91c1d09ada54 19 #include "reserved_pins.h"
mbed_official 30:91c1d09ada54 20
mbed_official 30:91c1d09ada54 21 static const PinName reserved_pins[] = TARGET_RESERVED_PINS;
mbed_official 30:91c1d09ada54 22
mbed_official 30:91c1d09ada54 23 uint32_t gpio_set(PinName pin) {
mbed_official 227:7bd0639b8911 24 MBED_ASSERT(pin != (PinName)NC);
mbed_official 30:91c1d09ada54 25 // PIO default value of following ports are not same as others
mbed_official 30:91c1d09ada54 26 unsigned i;
mbed_official 30:91c1d09ada54 27 int f = 0;
mbed_official 30:91c1d09ada54 28
mbed_official 227:7bd0639b8911 29 for (i = 0; i < sizeof(reserved_pins) / sizeof(PinName); i ++) {
mbed_official 30:91c1d09ada54 30 if (pin == reserved_pins[i]) {
mbed_official 30:91c1d09ada54 31 f = 1;
mbed_official 30:91c1d09ada54 32 break;
mbed_official 30:91c1d09ada54 33 }
mbed_official 227:7bd0639b8911 34 }
mbed_official 30:91c1d09ada54 35 pin_function(pin, f);
mbed_official 30:91c1d09ada54 36 return ((pin & 0x0F00) >> 8);
mbed_official 30:91c1d09ada54 37 }
mbed_official 30:91c1d09ada54 38
mbed_official 113:65a335a675de 39 void gpio_init(gpio_t *obj, PinName pin) {
mbed_official 227:7bd0639b8911 40 obj->pin = pin;
mbed_official 227:7bd0639b8911 41 if (pin == (PinName)NC)
mbed_official 227:7bd0639b8911 42 return;
mbed_official 30:91c1d09ada54 43
mbed_official 30:91c1d09ada54 44 LPC_GPIO_TypeDef *port_reg = ((LPC_GPIO_TypeDef *) (LPC_GPIO0_BASE + (((pin & 0xF000) >> PORT_SHIFT) * 0x10000)));
mbed_official 30:91c1d09ada54 45
mbed_official 30:91c1d09ada54 46 obj->reg_mask_read = &port_reg->MASKED_ACCESS[1 << gpio_set(pin)];
mbed_official 30:91c1d09ada54 47 obj->reg_dir = &port_reg->DIR;
mbed_official 30:91c1d09ada54 48 obj->reg_write = &port_reg->DATA;
mbed_official 30:91c1d09ada54 49 }
mbed_official 30:91c1d09ada54 50
mbed_official 30:91c1d09ada54 51 void gpio_mode(gpio_t *obj, PinMode mode) {
mbed_official 30:91c1d09ada54 52 pin_mode(obj->pin, mode);
mbed_official 30:91c1d09ada54 53 }
mbed_official 30:91c1d09ada54 54
mbed_official 30:91c1d09ada54 55 void gpio_dir(gpio_t *obj, PinDirection direction) {
mbed_official 227:7bd0639b8911 56 MBED_ASSERT(obj->pin != (PinName)NC);
mbed_official 30:91c1d09ada54 57 int pin_number = ((obj->pin & 0x0F00) >> 8);
mbed_official 30:91c1d09ada54 58 switch (direction) {
mbed_official 227:7bd0639b8911 59 case PIN_INPUT :
mbed_official 227:7bd0639b8911 60 *obj->reg_dir &= ~(1 << pin_number);
mbed_official 227:7bd0639b8911 61 break;
mbed_official 227:7bd0639b8911 62 case PIN_OUTPUT:
mbed_official 227:7bd0639b8911 63 *obj->reg_dir |= (1 << pin_number);
mbed_official 227:7bd0639b8911 64 break;
mbed_official 30:91c1d09ada54 65 }
mbed_official 30:91c1d09ada54 66 }