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targets/hal/TARGET_NXP/TARGET_LPC11XX_11CXX/port_api.c@30:91c1d09ada54, 2013-09-25 (annotated)

Committer:
mbed_official
Date:
Wed Sep 25 10:30:04 2013 +0100
Revision:
30:91c1d09ada54
Synchronized with git revision 8f57c1e84759991fa81ede0da2b4aabe8530fa09

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 30:91c1d09ada54 16
mbed_official 30:91c1d09ada54 17 #include "port_api.h"
mbed_official 30:91c1d09ada54 18 #include "pinmap.h"
mbed_official 30:91c1d09ada54 19 #include "gpio_api.h"
mbed_official 30:91c1d09ada54 20
mbed_official 30:91c1d09ada54 21 // LPC114 IOCON offset table [port][pin]
mbed_official 30:91c1d09ada54 22
mbed_official 30:91c1d09ada54 23 static uint8_t iocon_offset[4][12] = {
mbed_official 30:91c1d09ada54 24 {0x0c,0x10,0x1c,0x2c,0x30,0x34,0x4c,0x50,0x60,0x64,0x68,0x74}, // PORT 0
mbed_official 30:91c1d09ada54 25 {0x78,0x7c,0x80,0x90,0x94,0xa0,0xa4,0xa8,0x14,0x38,0x6c,0x98}, // PORT 1
mbed_official 30:91c1d09ada54 26 {0x08,0x28,0x5c,0x8c,0x40,0x44,0x00,0x20,0x24,0x54,0x58,0x70}, // PORT 2
mbed_official 30:91c1d09ada54 27 {0x84,0x88,0x9c,0xac,0x3c,0x48} // PORT 3
mbed_official 30:91c1d09ada54 28 };
mbed_official 30:91c1d09ada54 29
mbed_official 30:91c1d09ada54 30 PinName port_pin(PortName port, int pin) {
mbed_official 30:91c1d09ada54 31 return (PinName)((port << PORT_SHIFT) | (pin << PIN_SHIFT) | (uint32_t)iocon_offset[port][pin]);
mbed_official 30:91c1d09ada54 32 }
mbed_official 30:91c1d09ada54 33
mbed_official 30:91c1d09ada54 34 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
mbed_official 30:91c1d09ada54 35 obj->port = port;
mbed_official 30:91c1d09ada54 36 obj->mask = mask;
mbed_official 30:91c1d09ada54 37
mbed_official 30:91c1d09ada54 38 LPC_GPIO_TypeDef *port_reg = ((LPC_GPIO_TypeDef *) (LPC_GPIO0_BASE + (port * 0x10000)));
mbed_official 30:91c1d09ada54 39
mbed_official 30:91c1d09ada54 40 obj->reg_data = &port_reg->DATA;
mbed_official 30:91c1d09ada54 41 obj->reg_dir = &port_reg->DIR;
mbed_official 30:91c1d09ada54 42
mbed_official 30:91c1d09ada54 43 uint32_t i;
mbed_official 30:91c1d09ada54 44 // The function is set per pin: reuse gpio logic
mbed_official 30:91c1d09ada54 45 for (i=0; i<12; i++) {
mbed_official 30:91c1d09ada54 46 if (obj->mask & (1<<i)) {
mbed_official 30:91c1d09ada54 47 gpio_set(port_pin(obj->port, i));
mbed_official 30:91c1d09ada54 48 }
mbed_official 30:91c1d09ada54 49 }
mbed_official 30:91c1d09ada54 50
mbed_official 30:91c1d09ada54 51 port_dir(obj, dir);
mbed_official 30:91c1d09ada54 52 }
mbed_official 30:91c1d09ada54 53
mbed_official 30:91c1d09ada54 54 void port_mode(port_t *obj, PinMode mode) {
mbed_official 30:91c1d09ada54 55 uint32_t i;
mbed_official 30:91c1d09ada54 56 // The mode is set per pin: reuse pinmap logic
mbed_official 30:91c1d09ada54 57 for (i=0; i<12; i++) {
mbed_official 30:91c1d09ada54 58 if (obj->mask & (1<<i)) {
mbed_official 30:91c1d09ada54 59 pin_mode(port_pin(obj->port, i), mode);
mbed_official 30:91c1d09ada54 60 }
mbed_official 30:91c1d09ada54 61 }
mbed_official 30:91c1d09ada54 62 }
mbed_official 30:91c1d09ada54 63
mbed_official 30:91c1d09ada54 64 void port_dir(port_t *obj, PinDirection dir) {
mbed_official 30:91c1d09ada54 65 switch (dir) {
mbed_official 30:91c1d09ada54 66 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
mbed_official 30:91c1d09ada54 67 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
mbed_official 30:91c1d09ada54 68 }
mbed_official 30:91c1d09ada54 69 }
mbed_official 30:91c1d09ada54 70
mbed_official 30:91c1d09ada54 71 void port_write(port_t *obj, int value) {
mbed_official 30:91c1d09ada54 72 *obj->reg_data = (value & obj->mask);
mbed_official 30:91c1d09ada54 73 }
mbed_official 30:91c1d09ada54 74
mbed_official 30:91c1d09ada54 75 int port_read(port_t *obj) {
mbed_official 30:91c1d09ada54 76 return (*obj->reg_data & obj->mask);
mbed_official 30:91c1d09ada54 77 }
mbed_official 30:91c1d09ada54 78