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)
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 #elif defined(TARGET_LPC1114)
00026     static const PinName pin_names[] = {dp1, dp2, dp4, dp5, dp6, dp9, dp10, dp11
00027                                 , dp13, dp14, dp15, dp16, dp17, dp18, dp23
00028                                 , dp24, dp25, dp26, dp27, dp28};
00029 #elif defined(TARGET_LPC4088)
00030     static const PinName pin_names[] = {NC, NC, NC, NC, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14
00031                                 , p15, p16, p17, p18, p19, p20, NC, NC, p23
00032                                 , p24, p25, p26, p27, p28, p29, p30, p31, p32
00033                                 , p33, p34, NC, NC, p37, p38, p39, NC, NC, NC, NC, NC, NC, NC};
00034 #elif defined(TARGET_LPC4088_DM)
00035     static const PinName pin_names[] = {p1, p2, p3, p4, NC, NC, p7, p8, p9, p10, p11, p12, p13, p14
00036                                 , p15, p16, p17, p18, p19, p20, p21, p22, p23
00037                                 , p24, p25, p26, NC, NC, p29, p30, NC, NC
00038                                 , NC, NC, NC, NC, NC, NC, NC, NC, p41, p42, p43, p44, p45, p46};
00039 #endif
00040 
00041 
00042     if (str[0] == 'P') {   // PX_XX e.g.PA_2 PC_15
00043         uint32_t port = str[1] - 'A';
00044         uint32_t pin  = str[3] - '0';       
00045         uint32_t pin2 = str[4] - '0';       
00046 
00047         if (pin2 <= 9) {
00048             pin = pin * 10 + pin2;
00049         }
00050         return port_pin((PortName)port, pin);
00051 
00052     } else if (str[0] == 'L') {  // LEDn
00053         switch (str[3]) {
00054             case '1' : return LED1;
00055             case '2' : return LED2;
00056             case '3' : return LED3;
00057             case '4' : return LED4;
00058         }
00059 
00060     } else if (str[0] == 'U') {  // USB?X
00061         switch (str[3]) {
00062             case 'T' : return USBTX;
00063             case 'R' : return USBRX;
00064         }
00065     }
00066 
00067     return NC;
00068 }
00069 }
00070 
00071