Move crc16 function to libs
parent
2a96d4e23a
commit
356410dcfc
@ -0,0 +1,32 @@
|
||||
/**
|
||||
* Marlin 3D Printer Firmware
|
||||
* Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
|
||||
*
|
||||
* Based on Sprinter and grbl.
|
||||
* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
|
||||
*
|
||||
* This program 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.
|
||||
*
|
||||
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*
|
||||
*/
|
||||
|
||||
#include "crc16.h"
|
||||
|
||||
void crc16(uint16_t *crc, const void * const data, uint16_t cnt) {
|
||||
uint8_t *ptr = (uint8_t *)data;
|
||||
while (cnt--) {
|
||||
*crc = (uint16_t)(*crc ^ (uint16_t)(((uint16_t)*ptr++) << 8));
|
||||
for (uint8_t i = 0; i < 8; i++)
|
||||
*crc = (uint16_t)((*crc & 0x8000) ? ((uint16_t)(*crc << 1) ^ 0x1021) : (*crc << 1));
|
||||
}
|
||||
}
|
@ -0,0 +1,26 @@
|
||||
/**
|
||||
* Marlin 3D Printer Firmware
|
||||
* Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
|
||||
*
|
||||
* Based on Sprinter and grbl.
|
||||
* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
|
||||
*
|
||||
* This program 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.
|
||||
*
|
||||
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*
|
||||
*/
|
||||
#pragma once
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
void crc16(uint16_t *crc, const void * const data, uint16_t cnt);
|
Loading…
Reference in New Issue