P542-Labs / Mbed 2 deprecated Lab1

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Dependencies:   mbed

SerialConsole.h@0:ece62a42511f, 2014-08-31 (annotated)

Committer:
uswickra
Date:
Sun Aug 31 06:41:40 2014 +0000
Revision:
0:ece62a42511f
Child:
2:04d8e2ad8cff
commit programme;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
uswickra 0:ece62a42511f 1 #include "mbed.h"
uswickra 0:ece62a42511f 2 #include "Command.h"
uswickra 0:ece62a42511f 3 #include <vector>
uswickra 0:ece62a42511f 4 extern Serial pc;
uswickra 0:ece62a42511f 5
uswickra 0:ece62a42511f 6 using namespace std;
uswickra 0:ece62a42511f 7
uswickra 0:ece62a42511f 8 class SerialConsole
uswickra 0:ece62a42511f 9 {
uswickra 0:ece62a42511f 10 const char* prompt_str;
uswickra 0:ece62a42511f 11 char buffer[100];
uswickra 0:ece62a42511f 12 vector<Cmd*> cmds;
uswickra 0:ece62a42511f 13
uswickra 0:ece62a42511f 14 int param;
uswickra 0:ece62a42511f 15 //available commands
uswickra 0:ece62a42511f 16 Led_On_Cmd cmd1;
uswickra 0:ece62a42511f 17 Led_Off_Cmd cmd2;
uswickra 0:ece62a42511f 18 Cmd null_cmd;
uswickra 0:ece62a42511f 19
uswickra 0:ece62a42511f 20 public:
uswickra 0:ece62a42511f 21 SerialConsole() {
uswickra 0:ece62a42511f 22 prompt_str = "p542% ";
uswickra 0:ece62a42511f 23 init();
uswickra 0:ece62a42511f 24 };
uswickra 0:ece62a42511f 25
uswickra 0:ece62a42511f 26 SerialConsole(char* pr) {
uswickra 0:ece62a42511f 27 prompt_str = pr;
uswickra 0:ece62a42511f 28 init();
uswickra 0:ece62a42511f 29 };
uswickra 0:ece62a42511f 30
uswickra 0:ece62a42511f 31 void start() {
uswickra 0:ece62a42511f 32 //start with prompt
uswickra 0:ece62a42511f 33 prompt();
uswickra 0:ece62a42511f 34 //
uswickra 0:ece62a42511f 35 int count = 0 ;
uswickra 0:ece62a42511f 36 while(1) {
uswickra 0:ece62a42511f 37 char ch = pc.getc();
uswickra 0:ece62a42511f 38 buffer[count++] = ch ;
uswickra 0:ece62a42511f 39 //check for carriage return or new line
uswickra 0:ece62a42511f 40 if(ch == 0x0a || ch == 0x0d ) {
uswickra 0:ece62a42511f 41 //for each new line parse command then execute command
uswickra 0:ece62a42511f 42 Cmd* in_cmd = parse_command(count);
uswickra 0:ece62a42511f 43 in_cmd->execute(param);
uswickra 0:ece62a42511f 44 //reset count/buffer
uswickra 0:ece62a42511f 45 count = 0;
uswickra 0:ece62a42511f 46 //go to a new command line
uswickra 0:ece62a42511f 47 newline();
uswickra 0:ece62a42511f 48 prompt();
uswickra 0:ece62a42511f 49 continue ;
uswickra 0:ece62a42511f 50 } else if (ch == 'q') {
uswickra 0:ece62a42511f 51 //exit
uswickra 0:ece62a42511f 52 newline();
uswickra 0:ece62a42511f 53 prompt();
uswickra 0:ece62a42511f 54 return;
uswickra 0:ece62a42511f 55 }
uswickra 0:ece62a42511f 56 pc.putc(ch);
uswickra 0:ece62a42511f 57 }
uswickra 0:ece62a42511f 58 };
uswickra 0:ece62a42511f 59
uswickra 0:ece62a42511f 60 private:
uswickra 0:ece62a42511f 61 void init() {
uswickra 0:ece62a42511f 62 //default param
uswickra 0:ece62a42511f 63 param = 1 ;
uswickra 0:ece62a42511f 64 //default commands
uswickra 0:ece62a42511f 65 cmds.push_back(&cmd1);
uswickra 0:ece62a42511f 66 cmds.push_back(&cmd2);
uswickra 0:ece62a42511f 67 }
uswickra 0:ece62a42511f 68
uswickra 0:ece62a42511f 69 Cmd* parse_command(int count) {
uswickra 0:ece62a42511f 70 //parse command from buffer
uswickra 0:ece62a42511f 71 int curr_pos = 0;
uswickra 0:ece62a42511f 72 //loop until a space is encounterred
uswickra 0:ece62a42511f 73 //discard any leading spaces
uswickra 0:ece62a42511f 74 bool check_leading_spaces = true;
uswickra 0:ece62a42511f 75 bool check_cmd_str = true;
uswickra 0:ece62a42511f 76 bool check_arg_str = false;
uswickra 0:ece62a42511f 77 char cmd_str[100];
uswickra 0:ece62a42511f 78 char arg_str[100];
uswickra 0:ece62a42511f 79 int cmd_str_idx = 0;
uswickra 0:ece62a42511f 80 int arg_str_idx = 0;
uswickra 0:ece62a42511f 81 while (curr_pos < count) {
uswickra 0:ece62a42511f 82 if(buffer[curr_pos] == '\0') {
uswickra 0:ece62a42511f 83 break;
uswickra 0:ece62a42511f 84 }
uswickra 0:ece62a42511f 85 if (check_leading_spaces && buffer[curr_pos] == ' ') {
uswickra 0:ece62a42511f 86 curr_pos++;
uswickra 0:ece62a42511f 87 continue;
uswickra 0:ece62a42511f 88 } else if (check_cmd_str && buffer[curr_pos] != ' ') {
uswickra 0:ece62a42511f 89 //we have come to the command string start
uswickra 0:ece62a42511f 90 check_leading_spaces = false;
uswickra 0:ece62a42511f 91 cmd_str[cmd_str_idx++] = buffer[curr_pos];
uswickra 0:ece62a42511f 92 } else if (check_arg_str && buffer[curr_pos] != ' ') {
uswickra 0:ece62a42511f 93 //we have come to the arg string start
uswickra 0:ece62a42511f 94 check_leading_spaces = false;
uswickra 0:ece62a42511f 95 arg_str[arg_str_idx++] = buffer[curr_pos];
uswickra 0:ece62a42511f 96 } else if (buffer[curr_pos] == ' ') {
uswickra 0:ece62a42511f 97 if(check_arg_str) break;
uswickra 0:ece62a42511f 98 // we have come to the spaces after cmd string
uswickra 0:ece62a42511f 99 check_cmd_str = false;
uswickra 0:ece62a42511f 100 check_leading_spaces = true;
uswickra 0:ece62a42511f 101 check_arg_str = true;
uswickra 0:ece62a42511f 102 }
uswickra 0:ece62a42511f 103 curr_pos++;
uswickra 0:ece62a42511f 104 };
uswickra 0:ece62a42511f 105
uswickra 0:ece62a42511f 106 //make valid C string for comparison
uswickra 0:ece62a42511f 107 cmd_str[cmd_str_idx]= '\0';
uswickra 0:ece62a42511f 108 arg_str[arg_str_idx]= '\0';
uswickra 0:ece62a42511f 109
uswickra 0:ece62a42511f 110 //find any command matching input
uswickra 0:ece62a42511f 111 for(vector<Cmd*>::iterator it = cmds.begin(); it != cmds.end(); it++){
uswickra 0:ece62a42511f 112 Cmd* curr_cmd = *it;
uswickra 0:ece62a42511f 113 if(strcmp(curr_cmd->get_name(), cmd_str) == 0){
uswickra 0:ece62a42511f 114 //success : command found for given input
uswickra 0:ece62a42511f 115 param = atoi(arg_str);
uswickra 0:ece62a42511f 116 //todo remove
uswickra 0:ece62a42511f 117 newline();
uswickra 0:ece62a42511f 118 pc.puts("CMD SUCCESS param : ");
uswickra 0:ece62a42511f 119 pc.printf("%d", param);
uswickra 0:ece62a42511f 120 newline();
uswickra 0:ece62a42511f 121 return curr_cmd;
uswickra 0:ece62a42511f 122 }
uswickra 0:ece62a42511f 123 }
uswickra 0:ece62a42511f 124 return &null_cmd;
uswickra 0:ece62a42511f 125 }
uswickra 0:ece62a42511f 126
uswickra 0:ece62a42511f 127 void prompt() {
uswickra 0:ece62a42511f 128 pc.puts(prompt_str);
uswickra 0:ece62a42511f 129 };
uswickra 0:ece62a42511f 130
uswickra 0:ece62a42511f 131 void newline() {
uswickra 0:ece62a42511f 132 pc.putc(0x0d);
uswickra 0:ece62a42511f 133 pc.putc(0x0a);
uswickra 0:ece62a42511f 134 };
uswickra 0:ece62a42511f 135
uswickra 0:ece62a42511f 136 };
uswickra 0:ece62a42511f 137
uswickra 0:ece62a42511f 138 /*
uswickra 0:ece62a42511f 139 newline();
uswickra 0:ece62a42511f 140 pc.puts("DEBUG CMD : ");
uswickra 0:ece62a42511f 141 pc.putc(char(cmd_str_idx+'0'));
uswickra 0:ece62a42511f 142 newline();
uswickra 0:ece62a42511f 143 for(int i = 0 ; i < cmd_str_idx ; i++ ){
uswickra 0:ece62a42511f 144 pc.putc(cmd_str[i]);
uswickra 0:ece62a42511f 145 }
uswickra 0:ece62a42511f 146 newline();
uswickra 0:ece62a42511f 147 pc.puts("DEBUG ARG: ");
uswickra 0:ece62a42511f 148 pc.putc(char(arg_str_idx+ '0'));
uswickra 0:ece62a42511f 149 newline();
uswickra 0:ece62a42511f 150 for(int i = 0 ; i < arg_str_idx ; i++ ){
uswickra 0:ece62a42511f 151 pc.putc(arg_str[i]);
uswickra 0:ece62a42511f 152 }
uswickra 0:ece62a42511f 153 newline();*/