dmrconfig/hid.c

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/*
* HID routines, OS independent.
*
* Copyright (C) 2018 Serge Vakulenko, KK6ABQ
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "util.h"
static const unsigned char CMD_PRG[] = "\2PROGRA";
static const unsigned char CMD_PRG2[] = "M\2";
static const unsigned char CMD_ACK[] = "A";
static const unsigned char CMD_READ[] = "Raan";
static const unsigned char CMD_WRITE[] = "Waan...";
static const unsigned char CMD_ENDR[] = "ENDR";
static const unsigned char CMD_ENDW[] = "ENDW";
static const unsigned char CMD_CWB0[] = "CWB\4\0\0\0\0";
static const unsigned char CMD_CWB1[] = "CWB\4\0\1\0\0";
static unsigned offset = 0; // CWD offset
//
// Query and return the device identification string.
//
const char *hid_identify()
{
static unsigned char reply[38];
unsigned char ack;
hid_send_recv(CMD_PRG, 7, &ack, 1);
if (ack != CMD_ACK[0]) {
fprintf(stderr, "%s: Wrong PRD acknowledge %#x, expected %#x\n",
__func__, ack, CMD_ACK[0]);
return 0;
}
hid_send_recv(CMD_PRG2, 2, reply, 16);
hid_send_recv(CMD_ACK, 1, &ack, 1);
if (ack != CMD_ACK[0]) {
fprintf(stderr, "%s: Wrong PRG2 acknowledge %#x, expected %#x\n",
__func__, ack, CMD_ACK[0]);
return 0;
}
// Reply:
// 42 46 2d 35 52 ff ff ff 56 32 31 30 00 04 80 04
// B F - 5 R V 2 1 0
// Terminate the string.
char *p = memchr(reply, 0xff, sizeof(reply));
if (p)
*p = 0;
return (char*)reply;
}
void hid_read_block(int bno, unsigned char *data, int nbytes)
{
unsigned addr = bno * nbytes;
unsigned char ack, cmd[4], reply[32+4];
int n;
if (addr < 0x10000 && offset != 0) {
offset = 0;
hid_send_recv(CMD_CWB0, 8, &ack, 1);
if (ack != CMD_ACK[0]) {
fprintf(stderr, "%s: Wrong acknowledge %#x, expected %#x\n",
__func__, ack, CMD_ACK[0]);
exit(-1);
}
} else if (addr >= 0x10000 && offset == 0) {
offset = 0x00010000;
hid_send_recv(CMD_CWB1, 8, &ack, 1);
if (ack != CMD_ACK[0]) {
fprintf(stderr, "%s: Wrong acknowledge %#x, expected %#x\n",
__func__, ack, CMD_ACK[0]);
exit(-1);
}
}
for (n=0; n<nbytes; n+=32) {
cmd[0] = CMD_READ[0];
cmd[1] = (addr + n) >> 8;
cmd[2] = addr + n;
cmd[3] = 32;
hid_send_recv(cmd, 4, reply, sizeof(reply));
memcpy(data + n, reply + 4, 32);
}
}
void hid_write_block(int bno, unsigned char *data, int nbytes)
{
unsigned addr = bno * nbytes;
unsigned char ack, cmd[4+32];
int n;
if (addr < 0x10000 && offset != 0) {
offset = 0;
hid_send_recv(CMD_CWB0, 8, &ack, 1);
if (ack != CMD_ACK[0]) {
fprintf(stderr, "%s: Wrong acknowledge %#x, expected %#x\n",
__func__, ack, CMD_ACK[0]);
exit(-1);
}
} else if (addr >= 0x10000 && offset == 0) {
offset = 0x00010000;
hid_send_recv(CMD_CWB1, 8, &ack, 1);
if (ack != CMD_ACK[0]) {
fprintf(stderr, "%s: Wrong acknowledge %#x, expected %#x\n",
__func__, ack, CMD_ACK[0]);
exit(-1);
}
}
for (n=0; n<nbytes; n+=32) {
cmd[0] = CMD_WRITE[0];
cmd[1] = (addr + n) >> 8;
cmd[2] = addr + n;
cmd[3] = 32;
memcpy(cmd + 4, data + n, 32);
hid_send_recv(cmd, 4+32, &ack, 1);
if (ack != CMD_ACK[0]) {
fprintf(stderr, "%s: Wrong acknowledge %#x, expected %#x\n",
__func__, ack, CMD_ACK[0]);
exit(-1);
}
}
}
void hid_read_finish()
{
unsigned char ack;
hid_send_recv(CMD_ENDR, 4, &ack, 1);
if (ack != CMD_ACK[0]) {
fprintf(stderr, "%s: Wrong acknowledge %#x, expected %#x\n",
__func__, ack, CMD_ACK[0]);
}
}
void hid_write_finish()
{
unsigned char ack;
hid_send_recv(CMD_ENDW, 4, &ack, 1);
if (ack != CMD_ACK[0]) {
fprintf(stderr, "%s: Wrong acknowledge %#x, expected %#x\n",
__func__, ack, CMD_ACK[0]);
}
}