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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/hal/TARGET_NXP/TARGET_LPC11XX/port_api.c@19:398f4c622e1b, 2013-08-19 (annotated)

Committer:
bogdanm
Date:
Mon Aug 19 18:17:02 2013 +0300
Revision:
19:398f4c622e1b
Sync with official mbed library release 66

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 19:398f4c622e1b 1 /* mbed Microcontroller Library
bogdanm 19:398f4c622e1b 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 19:398f4c622e1b 3 *
bogdanm 19:398f4c622e1b 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 19:398f4c622e1b 5 * you may not use this file except in compliance with the License.
bogdanm 19:398f4c622e1b 6 * You may obtain a copy of the License at
bogdanm 19:398f4c622e1b 7 *
bogdanm 19:398f4c622e1b 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 19:398f4c622e1b 9 *
bogdanm 19:398f4c622e1b 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 19:398f4c622e1b 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 19:398f4c622e1b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 19:398f4c622e1b 13 * See the License for the specific language governing permissions and
bogdanm 19:398f4c622e1b 14 * limitations under the License.
bogdanm 19:398f4c622e1b 15 */
bogdanm 19:398f4c622e1b 16
bogdanm 19:398f4c622e1b 17 #include "port_api.h"
bogdanm 19:398f4c622e1b 18 #include "pinmap.h"
bogdanm 19:398f4c622e1b 19 #include "gpio_api.h"
bogdanm 19:398f4c622e1b 20
bogdanm 19:398f4c622e1b 21 // LPC114 IOCON offset table [port][pin]
bogdanm 19:398f4c622e1b 22
bogdanm 19:398f4c622e1b 23 static uint8_t iocon_offset[4][12] = {
bogdanm 19:398f4c622e1b 24 {0x0c,0x10,0x1c,0x2c,0x30,0x34,0x4c,0x50,0x60,0x64,0x68,0x74}, // PORT 0
bogdanm 19:398f4c622e1b 25 {0x78,0x7c,0x80,0x90,0x94,0xa0,0xa4,0xa8,0x14,0x38,0x6c,0x98}, // PORT 1
bogdanm 19:398f4c622e1b 26 {0x08,0x28,0x5c,0x8c,0x40,0x44,0x00,0x20,0x24,0x54,0x58,0x70}, // PORT 2
bogdanm 19:398f4c622e1b 27 {0x84,0x88,0x9c,0xac,0x3c,0x48} // PORT 3
bogdanm 19:398f4c622e1b 28 };
bogdanm 19:398f4c622e1b 29
bogdanm 19:398f4c622e1b 30 PinName port_pin(PortName port, int pin) {
bogdanm 19:398f4c622e1b 31 return (PinName)((port << PORT_SHIFT) | (pin << PIN_SHIFT) | (uint32_t)iocon_offset[port][pin]);
bogdanm 19:398f4c622e1b 32 }
bogdanm 19:398f4c622e1b 33
bogdanm 19:398f4c622e1b 34 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
bogdanm 19:398f4c622e1b 35 obj->port = port;
bogdanm 19:398f4c622e1b 36 obj->mask = mask;
bogdanm 19:398f4c622e1b 37
bogdanm 19:398f4c622e1b 38 LPC_GPIO_TypeDef *port_reg = ((LPC_GPIO_TypeDef *) (LPC_GPIO0_BASE + (port * 0x10000)));
bogdanm 19:398f4c622e1b 39
bogdanm 19:398f4c622e1b 40 obj->reg_data = &port_reg->DATA;
bogdanm 19:398f4c622e1b 41 obj->reg_dir = &port_reg->DIR;
bogdanm 19:398f4c622e1b 42
bogdanm 19:398f4c622e1b 43 uint32_t i;
bogdanm 19:398f4c622e1b 44 // The function is set per pin: reuse gpio logic
bogdanm 19:398f4c622e1b 45 for (i=0; i<12; i++) {
bogdanm 19:398f4c622e1b 46 if (obj->mask & (1<<i)) {
bogdanm 19:398f4c622e1b 47 gpio_set(port_pin(obj->port, i));
bogdanm 19:398f4c622e1b 48 }
bogdanm 19:398f4c622e1b 49 }
bogdanm 19:398f4c622e1b 50
bogdanm 19:398f4c622e1b 51 port_dir(obj, dir);
bogdanm 19:398f4c622e1b 52 }
bogdanm 19:398f4c622e1b 53
bogdanm 19:398f4c622e1b 54 void port_mode(port_t *obj, PinMode mode) {
bogdanm 19:398f4c622e1b 55 uint32_t i;
bogdanm 19:398f4c622e1b 56 // The mode is set per pin: reuse pinmap logic
bogdanm 19:398f4c622e1b 57 for (i=0; i<12; i++) {
bogdanm 19:398f4c622e1b 58 if (obj->mask & (1<<i)) {
bogdanm 19:398f4c622e1b 59 pin_mode(port_pin(obj->port, i), mode);
bogdanm 19:398f4c622e1b 60 }
bogdanm 19:398f4c622e1b 61 }
bogdanm 19:398f4c622e1b 62 }
bogdanm 19:398f4c622e1b 63
bogdanm 19:398f4c622e1b 64 void port_dir(port_t *obj, PinDirection dir) {
bogdanm 19:398f4c622e1b 65 switch (dir) {
bogdanm 19:398f4c622e1b 66 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
bogdanm 19:398f4c622e1b 67 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
bogdanm 19:398f4c622e1b 68 }
bogdanm 19:398f4c622e1b 69 }
bogdanm 19:398f4c622e1b 70
bogdanm 19:398f4c622e1b 71 void port_write(port_t *obj, int value) {
bogdanm 19:398f4c622e1b 72 *obj->reg_data = (value & obj->mask);
bogdanm 19:398f4c622e1b 73 }
bogdanm 19:398f4c622e1b 74
bogdanm 19:398f4c622e1b 75 int port_read(port_t *obj) {
bogdanm 19:398f4c622e1b 76 return (*obj->reg_data & obj->mask);
bogdanm 19:398f4c622e1b 77 }
bogdanm 19:398f4c622e1b 78