smoothie port to mbed online compiler (smoothieware.org)
For documentation, license, ..., please check http://smoothieware.org/
This version has been tested with a 3 axis machine
libs/utils.cpp
- Committer:
- scachat
- Date:
- 2012-07-31
- Revision:
- 0:31e91bb0ef3c
File content as of revision 0:31e91bb0ef3c:
/* This file is part of Smoothie (http://smoothieware.org/). The motion control part is heavily based on Grbl (https://github.com/simen/grbl). Smoothie is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Smoothie is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Smoothie. If not, see <http://www.gnu.org/licenses/>. */ #include "libs/Kernel.h" #include "libs/utils.h" #include "system_LPC17xx.h" using namespace std; #include <string> using std::string; #include <cstring> uint16_t get_checksum(string to_check){ // From: http://en.wikipedia.org/wiki/Fletcher%27s_checksum uint16_t sum1 = 0; uint16_t sum2 = 0; for( int index = 0; index < to_check.length(); ++index ){ sum1 = (sum1 + to_check[index]) % 255; sum2 = (sum2 + sum1) % 255; } return (sum2 << 8) | sum1; } vector<uint16_t> get_checksums(string key){ key = key.append(" "); vector<uint16_t> check_sums; size_t begin_key = 0; while( begin_key < key.size()-1 ){ size_t end_key = key.find_first_of(" .", begin_key); string key_node = key.substr(begin_key, end_key - begin_key); check_sums.push_back(get_checksum(key_node)); begin_key = end_key + 1; } return check_sums; } // Convert to lowercase string lc(string str){ for (int i=0;i<strlen(str.c_str());i++) if (str[i] >= 0x41 && str[i] <= 0x5A) str[i] = str[i] + 0x20; return str; } // Remove non-number characters string remove_non_number( string str ){ string number_mask = "0123456789-."; size_t found=str.find_first_not_of(number_mask); while (found!=string::npos){ //str[found]='*'; str.replace(found,1,""); found=str.find_first_not_of(number_mask); } return str; } // Get the first parameter, and remove it from the original string string shift_parameter( string ¶meters ){ size_t beginning = parameters.find_first_of(" "); if( beginning == string::npos ){ string temp = parameters; parameters = ""; return temp; } string temp = parameters.substr( 0, beginning ); parameters = parameters.substr(beginning+1, parameters.size()); return temp; } // Separate command from arguments string get_arguments( string possible_command ){ size_t beginning = possible_command.find_first_of(" "); if( beginning == string::npos ){ return ""; } return possible_command.substr( beginning+1, possible_command.size() - beginning); } // Returns true if the file exists bool file_exists( string file_name ){ bool exists = false; FILE *lp = fopen(file_name.c_str(), "r"); if(lp){ exists = true; } fclose(lp); return exists; } // Prepares and executes a watchdog reset void system_reset( void ){ LPC_WDT->WDCLKSEL = 0x1; // Set CLK src to PCLK uint32_t clk = SystemCoreClock / 16; // WD has a fixed /4 prescaler, PCLK default is /4 LPC_WDT->WDTC = 1 * (float)clk; // Reset in 1 second LPC_WDT->WDMOD = 0x3; // Enabled and Reset LPC_WDT->WDFEED = 0xAA; // Kick the dog! LPC_WDT->WDFEED = 0x55; }