mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

targets/TARGET_NXP/TARGET_LPC408X/port_api.c@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
149:156823d33999 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #include "port_api.h"
<> 144:ef7eb2e8f9f7 17 #include "pinmap.h"
<> 144:ef7eb2e8f9f7 18 #include "gpio_api.h"
<> 144:ef7eb2e8f9f7 19
<> 144:ef7eb2e8f9f7 20
<> 144:ef7eb2e8f9f7 21 PinName port_pin(PortName port, int pin_n) {
<> 144:ef7eb2e8f9f7 22 return (PinName)(((port << PORT_SHIFT) | pin_n));
<> 144:ef7eb2e8f9f7 23 }
<> 144:ef7eb2e8f9f7 24
<> 144:ef7eb2e8f9f7 25 void port_init(port_t *obj, PortName port, int mask, PinDirection dir) {
<> 144:ef7eb2e8f9f7 26 obj->port = port;
<> 144:ef7eb2e8f9f7 27 obj->mask = mask;
<> 144:ef7eb2e8f9f7 28
<> 144:ef7eb2e8f9f7 29 LPC_GPIO_TypeDef *port_reg = (LPC_GPIO_TypeDef *)(LPC_GPIO0_BASE + ((int)port * 0x20));
<> 144:ef7eb2e8f9f7 30
<> 144:ef7eb2e8f9f7 31 port_reg->MASK = ~mask;
<> 144:ef7eb2e8f9f7 32
<> 144:ef7eb2e8f9f7 33 obj->reg_out = &port_reg->PIN;
<> 144:ef7eb2e8f9f7 34 obj->reg_in = &port_reg->PIN;
<> 144:ef7eb2e8f9f7 35 obj->reg_dir = &port_reg->DIR;
<> 144:ef7eb2e8f9f7 36
<> 144:ef7eb2e8f9f7 37 uint32_t i;
<> 144:ef7eb2e8f9f7 38 // The function is set per pin: reuse gpio logic
<> 144:ef7eb2e8f9f7 39 for (i=0; i<32; i++) {
<> 144:ef7eb2e8f9f7 40 if (obj->mask & (1<<i)) {
<> 144:ef7eb2e8f9f7 41 gpio_set(port_pin(obj->port, i));
<> 144:ef7eb2e8f9f7 42 }
<> 144:ef7eb2e8f9f7 43 }
<> 144:ef7eb2e8f9f7 44
<> 144:ef7eb2e8f9f7 45 port_dir(obj, dir);
<> 144:ef7eb2e8f9f7 46 }
<> 144:ef7eb2e8f9f7 47
<> 144:ef7eb2e8f9f7 48 void port_mode(port_t *obj, PinMode mode) {
<> 144:ef7eb2e8f9f7 49 uint32_t i;
<> 144:ef7eb2e8f9f7 50 // The mode is set per pin: reuse pinmap logic
<> 144:ef7eb2e8f9f7 51 for (i=0; i<32; i++) {
<> 144:ef7eb2e8f9f7 52 if (obj->mask & (1<<i)) {
<> 144:ef7eb2e8f9f7 53 pin_mode(port_pin(obj->port, i), mode);
<> 144:ef7eb2e8f9f7 54 }
<> 144:ef7eb2e8f9f7 55 }
<> 144:ef7eb2e8f9f7 56 }
<> 144:ef7eb2e8f9f7 57
<> 144:ef7eb2e8f9f7 58 void port_dir(port_t *obj, PinDirection dir) {
<> 144:ef7eb2e8f9f7 59 switch (dir) {
<> 144:ef7eb2e8f9f7 60 case PIN_INPUT : *obj->reg_dir &= ~obj->mask; break;
<> 144:ef7eb2e8f9f7 61 case PIN_OUTPUT: *obj->reg_dir |= obj->mask; break;
<> 144:ef7eb2e8f9f7 62 }
<> 144:ef7eb2e8f9f7 63 }
<> 144:ef7eb2e8f9f7 64
<> 144:ef7eb2e8f9f7 65 void port_write(port_t *obj, int value) {
<> 144:ef7eb2e8f9f7 66 *obj->reg_out = (*obj->reg_in & ~obj->mask) | (value & obj->mask);
<> 144:ef7eb2e8f9f7 67 }
<> 144:ef7eb2e8f9f7 68
<> 144:ef7eb2e8f9f7 69 int port_read(port_t *obj) {
<> 144:ef7eb2e8f9f7 70 return (*obj->reg_in & obj->mask);
<> 144:ef7eb2e8f9f7 71 }