Nino Der Kinderen / Mbed 2 deprecated nRF24L01P_Project

project wireless

Dependencies:   mbed nRF24L01P nRF24L01P_Hello_World TextLCD

Fork of nRF24L01P_Hello_World by Owen Edwards

RPCInterface/RPCFunction.cpp@4:da91478e0ca4, 2015-05-19 (annotated)

Committer:
ninoderkinderen
Date:
Tue May 19 17:26:07 2015 +0000
Revision:
4:da91478e0ca4
uitvoer - wireless

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ninoderkinderen 4:da91478e0ca4 1 /**
ninoderkinderen 4:da91478e0ca4 2 * @section LICENSE
ninoderkinderen 4:da91478e0ca4 3 *Copyright (c) 2010 ARM Ltd.
ninoderkinderen 4:da91478e0ca4 4 *
ninoderkinderen 4:da91478e0ca4 5 *Permission is hereby granted, free of charge, to any person obtaining a copy
ninoderkinderen 4:da91478e0ca4 6 *of this software and associated documentation files (the "Software"), to deal
ninoderkinderen 4:da91478e0ca4 7 *in the Software without restriction, including without limitation the rights
ninoderkinderen 4:da91478e0ca4 8 *to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
ninoderkinderen 4:da91478e0ca4 9 *copies of the Software, and to permit persons to whom the Software is
ninoderkinderen 4:da91478e0ca4 10 *furnished to do so, subject to the following conditions:
ninoderkinderen 4:da91478e0ca4 11 *
ninoderkinderen 4:da91478e0ca4 12 *The above copyright notice and this permission notice shall be included in
ninoderkinderen 4:da91478e0ca4 13 *all copies or substantial portions of the Software.
ninoderkinderen 4:da91478e0ca4 14 *
ninoderkinderen 4:da91478e0ca4 15 *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
ninoderkinderen 4:da91478e0ca4 16 *IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
ninoderkinderen 4:da91478e0ca4 17 *FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
ninoderkinderen 4:da91478e0ca4 18 *AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
ninoderkinderen 4:da91478e0ca4 19 *LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
ninoderkinderen 4:da91478e0ca4 20 *OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
ninoderkinderen 4:da91478e0ca4 21 *THE SOFTWARE.
ninoderkinderen 4:da91478e0ca4 22 *
ninoderkinderen 4:da91478e0ca4 23 * @section Description
ninoderkinderen 4:da91478e0ca4 24 *This class provides an object which can be called over RPC to run the function which is attached to it.
ninoderkinderen 4:da91478e0ca4 25 *
ninoderkinderen 4:da91478e0ca4 26 */
ninoderkinderen 4:da91478e0ca4 27 #include "RPCFunction.h"
ninoderkinderen 4:da91478e0ca4 28 #include "rpc.h"
ninoderkinderen 4:da91478e0ca4 29
ninoderkinderen 4:da91478e0ca4 30 //Parse a char argument without delimiting by anything that is non alphanumeric - based on version in rpc.h line 153
ninoderkinderen 4:da91478e0ca4 31 char *parse_arg_char(const char *arg, const char **next) {
ninoderkinderen 4:da91478e0ca4 32 const char *ptr = arg;
ninoderkinderen 4:da91478e0ca4 33 char *res = NULL;
ninoderkinderen 4:da91478e0ca4 34 if(*arg == '"') {
ninoderkinderen 4:da91478e0ca4 35 /* quoted string */
ninoderkinderen 4:da91478e0ca4 36 ptr = ++arg;
ninoderkinderen 4:da91478e0ca4 37 int len = 0;
ninoderkinderen 4:da91478e0ca4 38 /* find the end (and length) of the quoted string */
ninoderkinderen 4:da91478e0ca4 39 for(char c = *ptr; c != 0 && c != '"'; c = *++ptr) {
ninoderkinderen 4:da91478e0ca4 40 len++;
ninoderkinderen 4:da91478e0ca4 41 if(c == '\\') {
ninoderkinderen 4:da91478e0ca4 42 ptr++;
ninoderkinderen 4:da91478e0ca4 43 }
ninoderkinderen 4:da91478e0ca4 44 }
ninoderkinderen 4:da91478e0ca4 45 /* copy the quoted string, and unescape characters */
ninoderkinderen 4:da91478e0ca4 46 if(len != 0) {
ninoderkinderen 4:da91478e0ca4 47 res = new char[len+1];
ninoderkinderen 4:da91478e0ca4 48 char *resptr = res;
ninoderkinderen 4:da91478e0ca4 49 while(arg != ptr) {
ninoderkinderen 4:da91478e0ca4 50 *resptr++ = parse_char(arg, &arg);
ninoderkinderen 4:da91478e0ca4 51 }
ninoderkinderen 4:da91478e0ca4 52 *resptr = 0;
ninoderkinderen 4:da91478e0ca4 53 }
ninoderkinderen 4:da91478e0ca4 54 } else {
ninoderkinderen 4:da91478e0ca4 55 /* unquoted string */
ninoderkinderen 4:da91478e0ca4 56 while(isalnum(*ptr) || isgraph(*ptr) || *ptr=='_' || *ptr == ' ') { //Edit this line to change which types of characters are allowed and which delimit
ninoderkinderen 4:da91478e0ca4 57 ptr++;
ninoderkinderen 4:da91478e0ca4 58 }
ninoderkinderen 4:da91478e0ca4 59 int len = ptr-arg;
ninoderkinderen 4:da91478e0ca4 60 if(len!=0) { //Chnages made to just pass whole string with no next arg or delimiters, these changes just removes space at the beginning
ninoderkinderen 4:da91478e0ca4 61 res = new char[len]; //was len+1
ninoderkinderen 4:da91478e0ca4 62 memcpy(res, arg + 1, len - 1); // was arg, len
ninoderkinderen 4:da91478e0ca4 63 res[len-1] = 0; //was len
ninoderkinderen 4:da91478e0ca4 64 }
ninoderkinderen 4:da91478e0ca4 65 }
ninoderkinderen 4:da91478e0ca4 66
ninoderkinderen 4:da91478e0ca4 67 if(next != NULL) {
ninoderkinderen 4:da91478e0ca4 68 *next = ptr;
ninoderkinderen 4:da91478e0ca4 69 }
ninoderkinderen 4:da91478e0ca4 70 return res;
ninoderkinderen 4:da91478e0ca4 71 }
ninoderkinderen 4:da91478e0ca4 72
ninoderkinderen 4:da91478e0ca4 73 //Custom rpc method caller for execute so that the string will not be delimited by anything
ninoderkinderen 4:da91478e0ca4 74 //See line 436 of rpc.h
ninoderkinderen 4:da91478e0ca4 75 void rpc_method_caller_run(Base *this_ptr, const char *arguments, char *result) {
ninoderkinderen 4:da91478e0ca4 76
ninoderkinderen 4:da91478e0ca4 77 const char *next = arguments;
ninoderkinderen 4:da91478e0ca4 78 char* arg1 = parse_arg_char(next,NULL);
ninoderkinderen 4:da91478e0ca4 79
ninoderkinderen 4:da91478e0ca4 80 char * res = (static_cast<RPCFunction*>(this_ptr)->run)(arg1);
ninoderkinderen 4:da91478e0ca4 81 if(result != NULL) {
ninoderkinderen 4:da91478e0ca4 82 write_result<char*>(res, result);
ninoderkinderen 4:da91478e0ca4 83 }
ninoderkinderen 4:da91478e0ca4 84 delete arg1; // Seems to stop a memory leak issue which prevented an RPCFunction being run more than ~500 times
ninoderkinderen 4:da91478e0ca4 85 }
ninoderkinderen 4:da91478e0ca4 86
ninoderkinderen 4:da91478e0ca4 87 RPCFunction::RPCFunction(void(*f)(char*, char*), const char* name) : Base(name){
ninoderkinderen 4:da91478e0ca4 88 _ftr = f;
ninoderkinderen 4:da91478e0ca4 89 }
ninoderkinderen 4:da91478e0ca4 90
ninoderkinderen 4:da91478e0ca4 91
ninoderkinderen 4:da91478e0ca4 92 //Just run the attached function using the string thats in private memory - or just using null values,
ninoderkinderen 4:da91478e0ca4 93 char * RPCFunction::run(char * input){
ninoderkinderen 4:da91478e0ca4 94 strcpy(_input, input);
ninoderkinderen 4:da91478e0ca4 95 (*_ftr)(_input,_output);
ninoderkinderen 4:da91478e0ca4 96 return(_output);
ninoderkinderen 4:da91478e0ca4 97 }
ninoderkinderen 4:da91478e0ca4 98
ninoderkinderen 4:da91478e0ca4 99 //Just read the output string
ninoderkinderen 4:da91478e0ca4 100 char* RPCFunction::read(){
ninoderkinderen 4:da91478e0ca4 101 return(_output);
ninoderkinderen 4:da91478e0ca4 102 }
ninoderkinderen 4:da91478e0ca4 103
ninoderkinderen 4:da91478e0ca4 104
ninoderkinderen 4:da91478e0ca4 105 #ifdef MBED_RPC
ninoderkinderen 4:da91478e0ca4 106 const rpc_method *RPCFunction::get_rpc_methods() {
ninoderkinderen 4:da91478e0ca4 107 static const rpc_method rpc_methods[] = {
ninoderkinderen 4:da91478e0ca4 108 { "run", rpc_method_caller_run }, //Run using custom caller, all characters accepted in string
ninoderkinderen 4:da91478e0ca4 109 { "read", rpc_method_caller<char*, RPCFunction, &RPCFunction::read> },
ninoderkinderen 4:da91478e0ca4 110 RPC_METHOD_SUPER(Base)
ninoderkinderen 4:da91478e0ca4 111 };
ninoderkinderen 4:da91478e0ca4 112 return rpc_methods;
ninoderkinderen 4:da91478e0ca4 113 }
ninoderkinderen 4:da91478e0ca4 114
ninoderkinderen 4:da91478e0ca4 115 #endif