parse_pins.cpp

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2013 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 #include "port_api.h"
00017 
00018 namespace mbed {
00019 
00020 PinName parse_pins(const char *str) {
00021 #if defined(TARGET_LPC1768) || defined(TARGET_LPC11U24) || defined(TARGET_LPC2368) || defined(TARGET_LPC4088)
00022     static const PinName pin_names[] = {p5, p6, p7, p8, p9, p10, p11, p12, p13, p14
00023                                 , p15, p16, p17, p18, p19, p20, p21, p22, p23
00024                                 , p24, p25, p26, p27, p28, p29, p30};
00025 #endif
00026 
00027 #if defined(TARGET_LPC1768) || defined(TARGET_LPC11U24) || defined(TARGET_LPC2368) || defined(TARGET_LPC812) || defined(TARGET_LPC4088)
00028     if (str[0] == 'P') {              // Pn_n
00029         uint32_t port = str[1] - '0';
00030         uint32_t pin  = str[3] - '0'; // Pn_n
00031         uint32_t pin2 = str[4] - '0'; // Pn_nn
00032         if (pin2 <= 9) {
00033             pin = pin * 10 + pin2;
00034         }
00035         return port_pin((PortName)port, pin);
00036 
00037 #elif defined(TARGET_KL25Z)
00038         if (str[0] == 'P' && str[1] == 'T') {   // PTx_n
00039             uint32_t port = str[2] - 'A';
00040             uint32_t pin  = str[3] - '0'; // PTxn
00041             uint32_t pin2 = str[4] - '0'; // PTxnn
00042 
00043             if (pin2 <= 9) {
00044                 pin = pin * 10 + pin2;
00045             }
00046             return port_pin((PortName)port, pin);
00047 #endif
00048 
00049 #if defined(TARGET_LPC1768) || defined(TARGET_LPC11U24) || defined(TARGET_LPC2368) || defined(TARGET_LPC4088)
00050     } else if (str[0] == 'p') {       // pn
00051         uint32_t pin  = str[1] - '0'; // pn
00052         uint32_t pin2 = str[2] - '0'; // pnn
00053         if (pin2 <= 9) {
00054             pin = pin * 10 + pin2;
00055         }
00056         if (pin < 5 || pin > 30) {
00057             return NC;
00058         }
00059         return pin_names[pin - 5];
00060 #endif
00061 
00062     } else if (str[0] == 'L') {  // LEDn
00063         switch (str[3]) {
00064             case '1' : return LED1;
00065             case '2' : return LED2;
00066             case '3' : return LED3;
00067             case '4' : return LED4;
00068         }
00069 
00070     } else if (str[0] == 'U') {  // USB?X
00071         switch (str[3]) {
00072             case 'T' : return USBTX;
00073             case 'R' : return USBRX;
00074         }
00075     }
00076 
00077     return NC;
00078 }
00079 
00080 }