71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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* This file is part of the libsidservo project.
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* Copyright 2025 Edward V. Emelianov <edward.emelianoff@gmail.com>.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "serial.h"
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#include "ssii.h"
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uint16_t SScalcChecksum(uint8_t *buf, int len){
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uint16_t checksum = 0;
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for(int i = 0; i < len; i++)
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checksum += *buf++;
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checksum ^= 0xFF00; // invert high byte
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//DBG("Checksum of %d bytes: 0x%04x", len, checksum);
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return checksum;
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}
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// send short/long binary command
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static int bincmd(uint8_t *cmd, int len){
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data_t d;
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if(len == sizeof(SSscmd)){
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((SSscmd*)cmd)->checksum = SScalcChecksum(cmd, len-2);
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DBG("Short command");
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d.buf = CMD_SHORTCMD;
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d.len = sizeof(CMD_SHORTCMD) - 1;
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if(!MountWriteRead(&d, NULL)) return -1;
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}else if(len == sizeof(SSlcmd)){
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((SSlcmd*)cmd)->checksum = SScalcChecksum(cmd, len-2);
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DBG("Long command");
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d.buf = CMD_LONGCMD;
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d.len = sizeof(CMD_LONGCMD) - 1;
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if(!MountWriteRead(&d, NULL)) return -1;
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}else{
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return -1;
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}
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DBG("Write %d bytes and wait for ans", len);
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d.buf = cmd;
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d.len = d.maxlen = len;
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return MountWriteRead(&d, &d);
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}
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// return TRUE if OK
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int SScmdS(SSscmd *cmd){
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return bincmd(cmd, sizeof(SSscmd));
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}
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int SScmdL(SSlcmd *cmd){
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return bincmd(cmd, sizeof(SSlcmd));
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}
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/**
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* @brief SSconvstat - convert stat from SSII format to human
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* @param status (i) - just read data
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* @param mountdata (o) - output
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*/
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void SSconvstat(const SSstat *status, mountdata_t *mountdata){
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;
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}
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