shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/hal/TARGET_Freescale/TARGET_KL46Z/port_api.c@31:42176bc3c368, 2013-09-25 (annotated)

Committer:
mbed_official
Date:
Wed Sep 25 11:30:05 2013 +0100
Revision:
31:42176bc3c368
Synchronized with git revision f580c008b139a952d38ac5c7c53bbae375739c67

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 31:42176bc3c368 1 /* mbed Microcontroller Library
mbed_official 31:42176bc3c368 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 31:42176bc3c368 3 *
mbed_official 31:42176bc3c368 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 31:42176bc3c368 5 * you may not use this file except in compliance with the License.
mbed_official 31:42176bc3c368 6 * You may obtain a copy of the License at
mbed_official 31:42176bc3c368 7 *
mbed_official 31:42176bc3c368 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 31:42176bc3c368 9 *
mbed_official 31:42176bc3c368 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 31:42176bc3c368 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 31:42176bc3c368 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 31:42176bc3c368 13 * See the License for the specific language governing permissions and
mbed_official 31:42176bc3c368 14 * limitations under the License.
mbed_official 31:42176bc3c368 15 */
mbed_official 31:42176bc3c368 16 #include "port_api.h"
mbed_official 31:42176bc3c368 17 #include "pinmap.h"
mbed_official 31:42176bc3c368 18 #include "gpio_api.h"
mbed_official 31:42176bc3c368 19
mbed_official 31:42176bc3c368 20 PinName port_pin(PortName port, int pin_n) {
mbed_official 31:42176bc3c368 21 return (PinName)((port << PORT_SHIFT) | (pin_n << 2));
mbed_official 31:42176bc3c368 22 }
mbed_official 31:42176bc3c368 23
mbed_official 31:42176bc3c368 24 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 31:42176bc3c368 25 obj->port = port;
mbed_official 31:42176bc3c368 26 obj->mask = mask;
mbed_official 31:42176bc3c368 27
mbed_official 31:42176bc3c368 28 FGPIO_Type *reg = (FGPIO_Type *)(FPTA_BASE + port * 0x40);
mbed_official 31:42176bc3c368 29
mbed_official 31:42176bc3c368 30 obj->reg_out = &reg->PDOR;
mbed_official 31:42176bc3c368 31 obj->reg_in = &reg->PDIR;
mbed_official 31:42176bc3c368 32 obj->reg_dir = &reg->PDDR;
mbed_official 31:42176bc3c368 33
mbed_official 31:42176bc3c368 34 uint32_t i;
mbed_official 31:42176bc3c368 35 // The function is set per pin: reuse gpio logic
mbed_official 31:42176bc3c368 36 for (i=0; i<32; i++) {
mbed_official 31:42176bc3c368 37 if (obj->mask & (1<<i)) {
mbed_official 31:42176bc3c368 38 gpio_set(port_pin(obj->port, i));
mbed_official 31:42176bc3c368 39 }
mbed_official 31:42176bc3c368 40 }
mbed_official 31:42176bc3c368 41
mbed_official 31:42176bc3c368 42 port_dir(obj, dir);
mbed_official 31:42176bc3c368 43 }
mbed_official 31:42176bc3c368 44
mbed_official 31:42176bc3c368 45 void port_mode(port_t *obj, PinMode mode) {
mbed_official 31:42176bc3c368 46 uint32_t i;
mbed_official 31:42176bc3c368 47 // The mode is set per pin: reuse pinmap logic
mbed_official 31:42176bc3c368 48 for (i=0; i<32; i++) {
mbed_official 31:42176bc3c368 49 if (obj->mask & (1<<i)) {
mbed_official 31:42176bc3c368 50 pin_mode(port_pin(obj->port, i), mode);
mbed_official 31:42176bc3c368 51 }
mbed_official 31:42176bc3c368 52 }
mbed_official 31:42176bc3c368 53 }
mbed_official 31:42176bc3c368 54
mbed_official 31:42176bc3c368 55 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 31:42176bc3c368 56 switch (dir) {
mbed_official 31:42176bc3c368 57 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
mbed_official 31:42176bc3c368 58 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
mbed_official 31:42176bc3c368 59 }
mbed_official 31:42176bc3c368 60 }
mbed_official 31:42176bc3c368 61
mbed_official 31:42176bc3c368 62 void port_write(port_t *obj, int value) {
mbed_official 31:42176bc3c368 63 *obj->reg_out = (*obj->reg_in & ~obj->mask) | (value & obj->mask);
mbed_official 31:42176bc3c368 64 }
mbed_official 31:42176bc3c368 65
mbed_official 31:42176bc3c368 66 int port_read(port_t *obj) {
mbed_official 31:42176bc3c368 67 return (*obj->reg_in & obj->mask);
mbed_official 31:42176bc3c368 68 }