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Initial KISS support

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Mark Qvist 2014-11-10 00:02:19 +01:00
parent 9addf50a33
commit 6e3d8d9987
18 changed files with 1521 additions and 164 deletions
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Version 1.24: (courtesy of Nils Eilers)
-- fixed exit code on success to be 0 instead of EINVAL
-- added --self-powered flag
Version 1.23:
-- added GPLv2 licensing.
Version 1.22:
-- try again to preserve USB version from eeprom.
Version 1.21:
-- preserve USB version from eeprom; libusb no longer does this correctly (sigh).
Version 1.10:
-- now able to invert _all_ the serial and handshake lines (not just DTR).
(courtesy of Jonas Meyer, thanks!)
Version 1.09:
Version 1.08:
-- fix compiler warning from newer gcc
-- Makefile fixes for latest Ubuntu & binutils
Version 1.06:
-- fix libftdi-0.19 API breakage by not using "BM_type_chip" from libftdi0-0.18.

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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11
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CFLAGS = -Wall -O2 -s -Werror
LDFLAGS = -lusb -lftdi -s
PROG = ft232r_prog
all: $(PROG)
$(PROG): $(PROG).c
$(CC) $(CFLAGS) -o $@ $< $(LDFLAGS)
clean:
rm -f $(PROG)

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/*
* ft232r_prog.c by Mark Lord. Copyright 2010-2013.
*
* This is a Linux command-line alternative to the FTDI MProg/FTProg utilities.
* It is known to work only for FT232R chips at this time.
*
* 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 2, 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; see the file LICENSE.txt. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <ftdi.h>
#define MYVERSION "1.24"
static struct ftdi_context ftdi;
static int verbose = 0;
static const char *save_path = NULL, *restore_path = NULL;
enum cbus_mode {
cbus_txden = 0,
cbus_pwren = 1,
cbus_rxled = 2,
cbus_txled = 3,
cbus_txrxled = 4,
cbus_sleep = 5,
cbus_clk48 = 6,
cbus_clk24 = 7,
cbus_clk12 = 8,
cbus_clk6 = 9,
cbus_io = 10,
cbus_wr = 11,
cbus_rd = 12,
cbus_rxf = 13,
};
static const char *cbus_mode_strings[] = {
"TxDEN",
"PwrEn",
"RxLED",
"TxLED",
"TxRxLED",
"Sleep",
"Clk48",
"Clk24",
"Clk12",
"Clk6",
"IO",
"WR",
"RD",
"RxF",
NULL
};
enum arg_type {
arg_help,
arg_dump,
arg_verbose,
arg_save,
arg_restore,
arg_cbus0,
arg_cbus1,
arg_cbus2,
arg_cbus3,
arg_cbus4,
arg_manufacturer,
arg_product,
arg_old_serno,
arg_new_serno,
arg_self_powered,
arg_max_bus_power,
arg_high_current_io,
arg_suspend_pull_down,
arg_old_vid,
arg_old_pid,
arg_new_vid,
arg_new_pid,
arg_invert_txd,
arg_invert_rxd,
arg_invert_rts,
arg_invert_cts,
arg_invert_dtr,
arg_invert_dsr,
arg_invert_dcd,
arg_invert_ri,
};
static const char *arg_type_strings[] = {
"--help",
"--dump",
"--verbose",
"--save",
"--restore",
"--cbus0",
"--cbus1",
"--cbus2",
"--cbus3",
"--cbus4",
"--manufacturer",
"--product",
"--old-serial-number",
"--new-serial-number",
"--self-powered",
"--max-bus-power",
"--high-current-io",
"--suspend-pull-down",
"--old-vid",
"--old-pid",
"--new-vid",
"--new-pid",
"--invert_txd",
"--invert_rxd",
"--invert_rts",
"--invert_cts",
"--invert_dtr",
"--invert_dsr",
"--invert_dcd",
"--invert_ri",
NULL
};
static const char *arg_type_help[] = {
" # (show this help text)",
" # (dump eeprom settings to stdout))",
"# (show debug info and raw eeprom contents)",
" # (save original eeprom contents to file)",
"# (restore initial eeprom contents from file)",
"",
"",
"",
"",
"",
" <string> # (new USB manufacturer string)",
" <string> # (new USB product name string)",
"<string> # (current serial number of device to be reprogrammed)",
"<string> # (new USB serial number string)",
" [on|off] # (self powered)",
" <number> # (max bus current in milli-amperes)",
" [on|off] # (enable high [6mA @ 5V] drive current on CBUS pins)",
"[on|off] # (force I/O pins into logic low state on suspend)",
" <number> # (current vendor id of device to be reprogrammed, eg. 0x0403)",
" <number> # (current product id of device to be reprogrammed, eg. 0x6001)",
" <number> # (new/custom vendor id to be programmed)",
" <number> # (new/custom product id be programmed)",
" Inverts the current value of TXD",
" Inverts the current value of RXD",
" Inverts the current value of RTS",
" Inverts the current value of CTS",
" Inverts the current value of DTR",
" Inverts the current value of DSR",
" Inverts the current value of DCD",
" Inverts the current value of RI",
};
static const char *bool_strings[] = {
"off",
"on",
"0",
"1",
"no",
"yes",
"disable",
"enable",
};
struct eeprom_fields {
unsigned char byte01;
unsigned char high_current_io; /* bool */
unsigned char load_d2xx_driver; /* bool */
unsigned char txd_inverted; /* bool */
unsigned char rxd_inverted; /* bool */
unsigned char rts_inverted; /* bool */
unsigned char cts_inverted; /* bool */
unsigned char dtr_inverted; /* bool */
unsigned char dsr_inverted; /* bool */
unsigned char dcd_inverted; /* bool */
unsigned char ri_inverted; /* bool */
unsigned char pnp_enabled; /* bool */
enum cbus_mode cbus[5];
unsigned char extras[112]; /* extra, undefined fields */
struct ftdi_eeprom libftdi; /* stuff known to libftdi */
unsigned char BM_type_chip; /* from libftdi-0.18, missing in 0.19 */
/* These are not actually eeprom values; here for convenience */
unsigned short old_vid;
unsigned short old_pid;
const char *old_serno;
unsigned short new_vid;
unsigned short new_pid;
};
static void dumpmem (const char *msg, void *addr, int len)
{
char *data = addr, hex[3 * 16 + 1], ascii[17];
unsigned int i, offset = 0;
if (msg)
printf("%s:\n", msg);
for (i = 0; i < len;) {
unsigned int i16 = i % 16;
unsigned char c = data[i];
sprintf(hex + (3 * i16), " %02x", c);
ascii[i16] = (c < ' ' || c > '~') ? '.' : c;
if (++i == len || i16 == 15) {
ascii[i16 + 1] = '\0';
for (; i16 != 15; ++i16)
strcat(hex, " ");
printf("%04x:%s %s\n", offset, hex, ascii);
offset = i;
}
}
}
static unsigned short calc_crc (void *addr, int len)
{
unsigned int i;
unsigned short crc = 0xaaaa;
unsigned char *d8 = addr;
for (i = 0; i < len - 2; i += 2) {
crc ^= d8[i] | (d8[i+1] << 8);
crc = (crc << 1) | (crc >> 15);
}
return crc;
}
static void do_deinit (void)
{
ftdi_deinit(&ftdi);
}
static void do_close (void)
{
ftdi_usb_close(&ftdi);
}
static unsigned short verify_crc (void *addr, int len)
{
unsigned short crc = calc_crc(addr, len);
unsigned char *d8 = addr;
unsigned short actual = d8[len-2] | (d8[len-1] << 8);
if (crc != actual) {
fprintf(stderr, "Bad CRC: crc=0x%04x, actual=0x%04x\n", crc, actual);
exit(EINVAL);
}
if (verbose) printf("CRC: Okay (0x%04x)\n", crc);
return crc;
}
static unsigned short update_crc (void *addr, int len)
{
unsigned short crc = calc_crc(addr, len);
unsigned char *d8 = addr;
d8[len-2] = crc;
d8[len-1] = crc >> 8;
return crc;
}
static int match_arg (const char *arg, const char **possibles)
{
int i;
for (i = 0; possibles[i]; ++i) {
if (0 == strcasecmp(possibles[i], arg))
return i;
}
fprintf(stderr, "unrecognized arg: \"%s\"\n", arg);
exit(EINVAL);
return -1; /* never reached */
}
static unsigned long unsigned_val (const char *arg, unsigned long max)
{
unsigned long val;
errno = 0;
val = strtoul(arg, NULL, 0);
if (errno || val > max) {
fprintf(stderr, "%s: bad value (max=0x%lx)\n", arg, max);
exit(EINVAL);
}
return val;
}
static void ee_dump (struct eeprom_fields *ee)
{
unsigned int c;
printf(" eeprom_size = %d\n", ee->libftdi.size);
printf(" vendor_id = 0x%04x\n", ee->libftdi.vendor_id);
printf(" product_id = 0x%04x\n", ee->libftdi.product_id);
printf(" self_powered = %d\n", ee->libftdi.self_powered);
printf(" remote_wakeup = %d\n", ee->libftdi.remote_wakeup);
printf("suspend_pull_downs = %d\n", ee->libftdi.suspend_pull_downs);
printf(" max_bus_power = %d mA\n", 2 * ee->libftdi.max_power);
printf(" manufacturer = %s\n", ee->libftdi.manufacturer);
printf(" product = %s\n", ee->libftdi.product);
printf(" serialnum = %s\n", ee->libftdi.serial);
printf(" high_current_io = %u\n", ee->high_current_io);
printf(" load_d2xx_driver = %u\n", ee->load_d2xx_driver);
printf(" txd_inverted = %u\n", ee->txd_inverted);
printf(" rxd_inverted = %u\n", ee->rxd_inverted);
printf(" rts_inverted = %u\n", ee->rts_inverted);
printf(" cts_inverted = %u\n", ee->cts_inverted);
printf(" dtr_inverted = %u\n", ee->dtr_inverted);
printf(" dsr_inverted = %u\n", ee->dsr_inverted);
printf(" dcd_inverted = %u\n", ee->dcd_inverted);
printf(" ri_inverted = %u\n", ee->ri_inverted);
for (c = 0; c < 5; ++c)
printf(" cbus[%u] = %s\n", c, cbus_mode_strings[ee->cbus[c]]);
if (verbose) {
/* These fields are non-applicable for FT232R devices */
printf(" usb_version = %d\n", ee->libftdi.usb_version);
printf(" use_serialnum = %d (n/a)\n", ee->libftdi.use_serial);
printf("change_usb_version = %d (n/a)\n", ee->libftdi.change_usb_version);
printf(" pnp_enabled = %u (n/a)\n", ee->pnp_enabled);
printf(" BM_type_chip = 0x%02x (n/a)\n", ee->BM_type_chip);
printf(" in_is_isochronous = %d (n/a)\n", ee->libftdi.in_is_isochronous);
printf("out_is_isochronous = %d (n/a)\n", ee->libftdi.out_is_isochronous);
}
};
static unsigned int calc_extras_offset (unsigned char *eeprom)
{
unsigned int str1 = (eeprom[0x0e] & 0x7f) + eeprom[0x0f];
unsigned int str2 = (eeprom[0x10] & 0x7f) + eeprom[0x11];
unsigned int str3 = (eeprom[0x12] & 0x7f) + eeprom[0x13];
unsigned int offset;
if (str3 > str2)
offset = (str3 > str1) ? str3 : str1;
else
offset = (str2 > str1) ? str2 : str1;
return offset;
}
static unsigned int encode_string (void *eeprom, int desc, int offset, char *s)
{
unsigned char c, *u8 = eeprom, slen = (strlen(s) + 1) * 2;
if (!s || !*s)
return offset;
u8[desc + 0] = offset | 0x80; /* offset of string */
u8[desc + 1] = slen; /* length */
u8[offset++] = slen; /* length */
u8[offset++] = 0x03; /* "type" == string */
while ((c = *s++)) {
u8[offset++] = c;
u8[offset++] = 0;
}
return offset;
}
static void ft232r_eprom_build (struct eeprom_fields *ee, unsigned char *eeprom)
{
unsigned int len = ee->libftdi.size;
int offset = 0x18;
memset(eeprom, 0, len);
if (strlen(ee->libftdi.serial) > 16) {
fprintf(stderr, "Serial number string exceeds limit of 16 chars, aborting.\n");
exit(EINVAL);
}
if ((strlen(ee->libftdi.manufacturer) + strlen(ee->libftdi.product) + strlen(ee->libftdi.serial)) > 46) {
fprintf(stderr, "Total string sizes exceed limit of 46 chars, aborting.\n");
exit(EINVAL);
}
offset = encode_string(eeprom, 0x0e, offset, ee->libftdi.manufacturer);
offset = encode_string(eeprom, 0x10, offset, ee->libftdi.product);
offset = encode_string(eeprom, 0x12, offset, ee->libftdi.serial);
eeprom[0x02] = ee->libftdi.vendor_id;
eeprom[0x03] = ee->libftdi.vendor_id >> 8;
eeprom[0x04] = ee->libftdi.product_id;
eeprom[0x05] = ee->libftdi.product_id >> 8;
eeprom[0x07] = ee->BM_type_chip;
eeprom[0x08] = 0x80;
if (ee->libftdi.remote_wakeup)
eeprom[0x08] |= 0x20;
if (ee->libftdi.self_powered)
eeprom[0x08] |= 0x40;
eeprom[0x09] = ee->libftdi.max_power;
if (ee->libftdi.in_is_isochronous)
eeprom[0x0a] |= 0x01;
if (ee->libftdi.out_is_isochronous)
eeprom[0x0a] |= 0x02;
if (ee->libftdi.suspend_pull_downs)
eeprom[0x0a] |= 0x04;
if (ee->libftdi.use_serial)
eeprom[0x0a] |= 0x08;
if (ee->libftdi.change_usb_version)
eeprom[0x0a] |= 0x10;
eeprom[0x0c] = ee->libftdi.usb_version;
eeprom[0x0d] = ee->libftdi.usb_version >> 8;
}
/*
* There are some undefined "extra features" bytes after the strings.
* So blindly preserve them from the original eeprom image.
*/
static void ee_encode_extras (unsigned char *eeprom, int len, struct eeprom_fields *ee)
{
unsigned int extras_offset = calc_extras_offset(eeprom);
memcpy(eeprom + extras_offset, ee->extras, len - extras_offset - 2);
if (ee->pnp_enabled)
eeprom[extras_offset + 2] |= 1;
else
eeprom[extras_offset + 2] &= ~1;
}
static unsigned short ee_encode (unsigned char *eeprom, int len, struct eeprom_fields *ee)
{
int ret;
memset(eeprom, 0, len);
ee->libftdi.size = len;
if (ee->new_vid)
ee->libftdi.vendor_id = ee->new_vid;
if (ee->new_pid)
ee->libftdi.product_id = ee->new_pid;
/* Unfortunately, ftdi_eeprom_build() is buggy and puts things in the wrong places */
if (0) {
ret = ftdi_eeprom_build(&ee->libftdi, eeprom);
if (ret < 0) {
fprintf(stderr, "ftdi_eeprom_build() failed, ret=%d\n", ret);
exit(EINVAL);
}
printf("ftdi_eeprom_build() ret=%d\n", ret);
} else {
ft232r_eprom_build(ee, eeprom);
}
eeprom[1] = ee->byte01;
if (ee->high_current_io)
eeprom[0x00] |= 0x04;
if (ee->load_d2xx_driver)
eeprom[0x00] |= 0x08;
if (ee->txd_inverted)
eeprom[0x0b] |= 0x01;
if (ee->rxd_inverted)
eeprom[0x0b] |= 0x02;
if (ee->rts_inverted)
eeprom[0x0b] |= 0x04;
if (ee->cts_inverted)
eeprom[0x0b] |= 0x08;
if (ee->dtr_inverted)
eeprom[0x0b] |= 0x10;
if (ee->dsr_inverted)
eeprom[0x0b] |= 0x20;
if (ee->dcd_inverted)
eeprom[0x0b] |= 0x40;
if (ee->ri_inverted)
eeprom[0x0b] |= 0x80;
eeprom[0x14] = (ee->cbus[1] << 4) | ee->cbus[0];
eeprom[0x15] = (ee->cbus[3] << 4) | ee->cbus[2];
eeprom[0x16] = ee->cbus[4];
ee_encode_extras(eeprom, len, ee);
return update_crc(eeprom, len);
}
/*
* There are some undefined "extra features" bytes after the strings.
* So blindly preserve them from the original eeprom image.
*/
static void ee_decode_extras (unsigned char *eeprom, int len, struct eeprom_fields *ee)
{
unsigned int extras_offset = calc_extras_offset(eeprom);
memcpy(ee->extras, eeprom + extras_offset, len - extras_offset - 2);
ee->pnp_enabled = eeprom[extras_offset + 2] & 0x01;
}
static void ee_decode (unsigned char *eeprom, int len, struct eeprom_fields *ee)
{
memset(ee, 0, sizeof(*ee));
if (eeprom[0] & 0x04)
ee->high_current_io = 1;
if (eeprom[0x00] & 0x08)
ee->load_d2xx_driver = 1;
ee->byte01 = eeprom[0x01];
if (eeprom[0x0b] & 0x01)
ee->txd_inverted = 1;
if (eeprom[0x0b] & 0x02)
ee->rxd_inverted = 1;
if (eeprom[0x0b] & 0x04)
ee->rts_inverted = 1;
if (eeprom[0x0b] & 0x08)
ee->cts_inverted = 1;
if (eeprom[0x0b] & 0x10)
ee->dtr_inverted = 1;
if (eeprom[0x0b] & 0x20)
ee->dsr_inverted = 1;
if (eeprom[0x0b] & 0x40)
ee->dcd_inverted = 1;
if (eeprom[0x0b] & 0x80)
ee->ri_inverted = 1;
ee->cbus[0] = eeprom[0x14] & 0xf;
ee->cbus[1] = eeprom[0x14] >> 4;
ee->cbus[2] = eeprom[0x15] & 0xf;
ee->cbus[3] = eeprom[0x15] >> 4;
ee->cbus[4] = eeprom[0x16] & 0xf;
ee_decode_extras(eeprom, len, ee);
/* Use libftdi to decode the remaining fields, which it knows about */
if (ftdi_eeprom_decode(&ee->libftdi, eeprom, len)) {
fprintf(stderr, "ftdi_eeprom_decode() failed\n");
exit(EINVAL);
}
ee->BM_type_chip = eeprom[0x07]; /* buggy ftdi_eeprom_decode() */
if (eeprom[0x0a] & 0x10) /* more buggy ftdi_eeprom_decode() */
ee->libftdi.change_usb_version = 1;
else
ee->libftdi.change_usb_version = 0;
ee->libftdi.usb_version = (eeprom[0x0d] << 8) | eeprom[0x0c];;
}
static const char *myname;
static void show_help (FILE *fp)
{
int i;
fprintf(fp, "\nUsage: %s [<arg> <val>]..\n", myname);
fprintf(fp, "\nwhere <arg> must be any of:\n");
for (i = 0; arg_type_strings[i]; ++i) {
const char *val = arg_type_help[i];
fprintf(fp, " %s", arg_type_strings[i]);
if (val) {
if (*val) {
fprintf(fp, " %s", val);
} else { /* cbus args */
int j;
fprintf(fp, " [");
for (j = 0; cbus_mode_strings[j];) {
fprintf(fp, "%s", cbus_mode_strings[j]);
if (cbus_mode_strings[++j])
fprintf(fp, "|");
}
fprintf(fp, "]");
}
}
fputc('\n', fp);
}
fputc('\n', fp);
}
static unsigned short ee_read_and_verify (void *eeprom, int len)
{
if (ftdi_read_eeprom(&ftdi, eeprom)) {
fprintf(stderr, "ftdi_read_eeprom() failed: %s\n", ftdi_get_error_string(&ftdi));
exit(EIO);
}
return verify_crc(eeprom, len);
}
static void process_args (int argc, char *argv[], struct eeprom_fields *ee)
{
int i;
for (i = 1; i < argc;) {
int arg;
arg = match_arg(argv[i++], arg_type_strings);
switch (arg) {
case arg_help:
show_help(stdout);
exit(1);
case arg_dump:
continue;
case arg_verbose:
verbose = 1;
continue;
case arg_invert_txd:
ee->txd_inverted = !ee->txd_inverted;
continue;
case arg_invert_rxd:
ee->rxd_inverted = !ee->rxd_inverted;
continue;
case arg_invert_rts:
ee->rts_inverted = !ee->rts_inverted;
continue;
case arg_invert_cts:
ee->cts_inverted = !ee->cts_inverted;
continue;
case arg_invert_dtr:
ee->dtr_inverted = !ee->dtr_inverted;
continue;
case arg_invert_dsr:
ee->dsr_inverted = !ee->dsr_inverted;
continue;
case arg_invert_dcd:
ee->dcd_inverted = !ee->dcd_inverted;
continue;
case arg_invert_ri:
ee->ri_inverted = !ee->ri_inverted;
continue;
}
if (i == argc) {
fprintf(stderr, "%s: missing %s value\n", argv[i-2], argv[i-1]);
exit(EINVAL);
}
switch (arg) {
case arg_save:
save_path = argv[i++];
break;
case arg_restore:
restore_path = argv[i++];
break;
case arg_cbus0:
case arg_cbus1:
case arg_cbus2:
case arg_cbus3:
case arg_cbus4:
ee->cbus[arg - arg_cbus0] = match_arg(argv[i++], cbus_mode_strings);
break;
case arg_manufacturer:
ee->libftdi.manufacturer = argv[i++];
break;
case arg_product:
ee->libftdi.product = argv[i++];
break;
case arg_new_serno:
ee->libftdi.serial = argv[i++];
break;
case arg_high_current_io:
ee->high_current_io = match_arg(argv[i++], bool_strings) & 1;
break;
case arg_self_powered:
ee->libftdi.self_powered = match_arg(argv[i++], bool_strings) & 1;
break;
case arg_max_bus_power:
ee->libftdi.max_power = unsigned_val(argv[i++], 0x1ff) / 2;
break;
case arg_suspend_pull_down:
ee->libftdi.suspend_pull_downs = unsigned_val(argv[i++], 0xff);
break;
case arg_old_vid:
ee->old_vid = unsigned_val(argv[i++], 0xffff);
break;
case arg_old_pid:
ee->old_pid = unsigned_val(argv[i++], 0xffff);
break;
case arg_old_serno:
ee->old_serno = argv[i++];
break;
case arg_new_vid:
ee->new_vid = unsigned_val(argv[i++], 0xffff);
break;
case arg_new_pid:
ee->new_pid = unsigned_val(argv[i++], 0xffff);
break;
default:
fprintf(stderr, "bad args\n");
exit(EINVAL);
}
}
}
static void save_eeprom_to_file (const char *path, void *eeprom, int len)
{
int count, fd = open(path, O_CREAT|O_WRONLY|O_TRUNC, 0644);
if (fd == -1) {
int err = errno;
perror(path);
exit(err);
}
count = write(fd, eeprom, len);
if (count < 0) {
int err = errno;
perror(path);
exit(err);
}
close(fd);
if (count != len) {
fprintf(stderr, "%s: wrong size, wrote %d/%d bytes\n", path, count, len);
exit(EINVAL);
}
printf("%s: wrote %d bytes\n", path, count);
}
static void restore_eeprom_from_file (const char *path, void *eeprom, int len, int max)
{
int count, fd = open(path, O_RDONLY);
if (fd == -1) {
int err = errno;
perror(path);
exit(err);
}
count = read(fd, eeprom, max);
if (count < 0) {
int err = errno;
perror(path);
exit(err);
}
close(fd);
if (count != len ) {
fprintf(stderr, "%s: wrong size, read %d/%d bytes\n", path, count, len);
exit(EINVAL);
}
printf("%s: read %d bytes\n", path, count);
verify_crc(eeprom, len);
}
int main (int argc, char *argv[])
{
const char *slash;
unsigned char old[256] = {0,}, new[256] = {0,};
unsigned short new_crc;
struct eeprom_fields ee;
unsigned int len = 128;
myname = argv[0];
slash = strrchr(myname, '/');
if (slash)
myname = slash + 1;
printf("\n%s: version %s, by Mark Lord.\n", myname, MYVERSION);
if (argc < 2) {
show_help(stdout);
exit(0);
}
ftdi_init(&ftdi);
atexit(&do_deinit);
memset(&ee, 0, sizeof(ee));
ee.old_vid = 0x0403;; /* default; override with --old_vid arg */
ee.old_pid = 0x6001; /* default; override with --old_pid arg */
process_args(argc, argv, &ee); /* handle --help and --old-* args */
if (ftdi_usb_open_desc(&ftdi, ee.old_vid, ee.old_pid, NULL, ee.old_serno)) {
fprintf(stderr, "ftdi_usb_open() failed for %04x:%04x:%s %s\n",
ee.old_vid, ee.old_pid, ee.old_serno ? ee.old_serno : "", ftdi_get_error_string(&ftdi));
exit(ENODEV);
}
atexit(&do_close);
/* First, read the original eeprom from the device */
(void) ee_read_and_verify(old, len);
if (verbose) dumpmem("existing eeprom", old, len);
/* Save old contents to a file, if requested (--save) */
if (save_path)
save_eeprom_to_file(save_path, old, len);
/* Restore contents from a file, if requested (--restore) */
if (restore_path) {
restore_eeprom_from_file(restore_path, new, len, sizeof(new));
if (verbose) dumpmem(restore_path, new, len);
/* Decode file contents into ee struct */
ee_decode(new, len, &ee);
} else {
/* Decode eeprom contents into ee struct */
ee_decode(old, len, &ee);
/* Reencode without any changes, to ensure we can reconstruct the original eeprom from ee */
new_crc = ee_encode(new, len, &ee);
if (memcmp(old, new, len)) {
if (verbose) dumpmem("reconstructed eeprom", new, len);
fprintf(stderr, "eeprom reconstruction self-test failed, aborting.\n");
exit(EINVAL);
}
}
/* process args, and dump new settings */
process_args(argc, argv, &ee); /* Handle value-change args */
ee_dump(&ee);
/* Build new eeprom image */
new_crc = ee_encode(new, len, &ee);
/* If different from original, then write it back to the device */
if (0 == memcmp(old, new, len)) {
printf("No change from existing eeprom contents.\n");
} else {
if (verbose) dumpmem("new eeprom", new, len);
printf("Rewriting eeprom with new contents.\n");
if (ftdi_write_eeprom(&ftdi, new)) {
fprintf(stderr, "ftdi_write_eeprom() failed: %s\n", ftdi_get_error_string(&ftdi));
exit(EIO);
}
/* Read it back again, and check for differences */
if (ee_read_and_verify(new, len) != new_crc) {
fprintf(stderr, "Readback test failed, results may be botched\n");
exit(EINVAL);
}
ftdi_usb_reset(&ftdi); /* reset the device to force it to load the new settings */
}
return 0;
}

BIN
Documentation/Usage.odt Normal file
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Binary file not shown.

16
Modem/afsk.c
View File

@ -13,6 +13,10 @@
#include <struct/fifobuf.h> // FIFO buffer implementation from BertOS
#include <string.h> // String operations, primarily used for memset function
#if SERIAL_PROTOCOL == PROTOCOL_KISS
extern unsigned long kiss_preamble;
extern unsigned long kiss_tail;
#endif
//////////////////////////////////////////////////////
// Definitions and some useful macros //
@ -449,14 +453,22 @@ static void afsk_txStart(Afsk *afsk) {
LED_TX_ON();
// We also need to calculate how many HDLC_FLAG
// bytes we need to send in preamble
afsk->preambleLength = DIV_ROUND(CONFIG_AFSK_PREAMBLE_LEN * BITRATE, 8000);
#if SERIAL_PROTOCOL == PROTOCOL_KISS
afsk->preambleLength = DIV_ROUND(kiss_preamble * BITRATE, 8000);
#else
afsk->preambleLength = DIV_ROUND(CONFIG_AFSK_PREAMBLE_LEN * BITRATE, 8000);
#endif
AFSK_DAC_IRQ_START();
}
// We make the same calculation for the tail length,
// but this needs to be atomic, since the txStart
// function could potentially be called while we
// are already transmitting.
ATOMIC(afsk->tailLength = DIV_ROUND(CONFIG_AFSK_TRAILER_LEN * BITRATE, 8000));
#if SERIAL_PROTOCOL == PROTOCOL_KISS
ATOMIC(afsk->tailLength = DIV_ROUND(kiss_tail * BITRATE, 8000));
#else
ATOMIC(afsk->tailLength = DIV_ROUND(CONFIG_AFSK_TRAILER_LEN * BITRATE, 8000));
#endif
}
// This is the DAC ISR, called at sampling rate whenever the DAC IRQ is on.

9
Modem/config.h
View File

@ -2,9 +2,16 @@
#ifndef FSK_CFG
#define FSK_CFG
// Serial options
#define PROTOCOL_SIMPLE_SERIAL 0x01
#define PROTOCOL_KISS 0x02
#define SERIAL_PROTOCOL PROTOCOL_SIMPLE_SERIAL
//#define SERIAL_PROTOCOL PROTOCOL_KISS
// Debug & test options
#define SERIAL_DEBUG false
#define PASSALL false
#define PASSALL true
#define AUTOREPLY false
// Modem options

195
Modem/main.c
View File

@ -25,8 +25,6 @@
#include "cfg/debug.h" // Debug configuration from BertOS
#endif
#define SERIAL_PROTOCOL PROTOCOL_SIMPLE_SERIAL
//////////////////////////////////////////////////////
// A few definitions //
//////////////////////////////////////////////////////
@ -38,17 +36,21 @@ static Serial ser; // Declare a serial interface struct
#define ADC_CH 0 // Define which channel (pin) we want
// for the ADC (this is A0 on arduino)
#if SERIAL_PROTOCOL == PROTOCOL_SIMPLE_SERIAL
static uint8_t serialBuffer[CONFIG_AX25_FRAME_BUF_LEN+1]; // Buffer for holding incoming serial data
static int sbyte; // For holding byte read from serial port
static size_t serialLen = 0; // Counter for counting length of data from serial
static bool sertx = false; // Flag signifying whether it's time to send data
// received on the serial port.
#endif
static uint8_t serialBuffer[CONFIG_AX25_FRAME_BUF_LEN+1]; // Buffer for holding incoming serial data
static int sbyte; // For holding byte read from serial port
static size_t serialLen = 0; // Counter for counting length of data from serial
static bool sertx = false; // Flag signifying whether it's time to send data
// received on the serial port.
#if SERIAL_PROTOCOL == PROTOCOL_KISS
static uint8_t sbyte; // For holding byte read from serial port
#endif
#define SER_BUFFER_FULL (serialLen < CONFIG_AX25_FRAME_BUF_LEN-1)
//////////////////////////////////////////////////////
// And here comes the actual program :) //
//////////////////////////////////////////////////////
@ -56,15 +58,19 @@ static bool sertx = false; // Flag signifying whether it's
// This is a callback we register with the protocol,
// so we can process each packet as they are decoded.
// Right now it just prints the packet to the serial port.
#if SERIAL_PROTOCOL == PROTOCOL_SIMPLE_SERIAL
static void message_callback(struct AX25Msg *msg)
{
if (SERIAL_PROTOCOL == PROTOCOL_SIMPLE_SERIAL) {
ss_messageCallback(msg, &ser);
}
if (SERIAL_PROTOCOL == PROTOCOL_KISS) {
// Not implemented yet
}
ss_messageCallback(msg, &ser);
}
#endif
#if SERIAL_PROTOCOL == PROTOCOL_KISS
static void message_callback(struct AX25Ctx *ctx)
{
kiss_messageCallback(ctx);
}
#endif
// Simple initialization function.
static void init(void)
@ -90,9 +96,16 @@ static void init(void)
// ... and a protocol context with the modem
ax25_init(&ax25, &afsk.fd, message_callback);
// Init SimpleSerial
ss_init(&ax25);
#if SERIAL_PROTOCOL == PROTOCOL_SIMPLE_SERIAL
// Init SimpleSerial
ss_init(&ax25);
#endif
#if SERIAL_PROTOCOL == PROTOCOL_KISS
// Init KISS
kiss_init(&ax25, &ser);
#endif
// That's all!
}
@ -100,77 +113,93 @@ int main(void)
{
// Start by running the main initialization
init();
// Record the current tick count for time-keeping
ticks_t start = timer_clock();
// Go into ye good ol' infinite loop
while (1)
{
// First we instruct the protocol to check for
// incoming data
ax25_poll(&ax25);
#if SERIAL_PROTOCOL == PROTOCOL_KISS
while (1) {
// First we instruct the protocol to check for
// incoming data
ax25_poll(&ax25);
// Poll for incoming serial data
if (!sertx && ser_available(&ser)) {
// We then read a byte from the serial port.
// Notice that we use "_nowait" since we can't
// have this blocking execution until a byte
// comes in.
sbyte = ser_getchar_nowait(&ser);
// If SERIAL_DEBUG is specified we'll handle
// serial data as direct human input and only
// transmit when we get a LF character
#if SERIAL_DEBUG
// If we have not yet surpassed the maximum frame length
// and the byte is not a "transmit" (newline) character,
// we should store it for transmission.
if ((serialLen < CONFIG_AX25_FRAME_BUF_LEN) && (sbyte != 10)) {
// Put the read byte into the buffer;
serialBuffer[serialLen] = sbyte;
// Increment the read length counter
serialLen++;
} else {
// If one of the above conditions were actually the
// case, it means we have to transmit, se we set
// transmission flag to true.
sertx = true;
}
#else
// Otherwise we assume the modem is running
// in automated mode, and we push out data
// as it becomes available. We either transmit
// immediately when the max frame length has
// been reached, or when we get no input for
// a certain amount of time.
if (serialLen < CONFIG_AX25_FRAME_BUF_LEN-1) {
// Put the read byte into the buffer;
serialBuffer[serialLen] = sbyte;
// Increment the read length counter
serialLen++;
} else {
// If max frame length has been reached
// we need to transmit.
serialBuffer[serialLen] = sbyte;
serialLen++;
sertx = true;
}
start = timer_clock();
#endif
} else {
if (!SERIAL_DEBUG && serialLen > 0 && timer_clock() - start > ms_to_ticks(TX_MAXWAIT)) {
sertx = true;
if (ser_available(&ser)) {
sbyte = ser_getchar_nowait(&ser);
kiss_serialCallback(sbyte);
}
}
if (sertx) {
ss_serialCallback(serialBuffer, serialLen, &ser, &ax25);
sertx = false;
serialLen = 0;
}
#endif
}
#if SERIAL_PROTOCOL == PROTOCOL_SIMPLE_SERIAL
// Record the current tick count for time-keeping
ticks_t start = timer_clock();
// Go into ye good ol' infinite loop
while (1) {
// First we instruct the protocol to check for
// incoming data
ax25_poll(&ax25);
// Poll for incoming serial data
if (!sertx && ser_available(&ser)) {
// We then read a byte from the serial port.
// Notice that we use "_nowait" since we can't
// have this blocking execution until a byte
// comes in.
sbyte = ser_getchar_nowait(&ser);
// If SERIAL_DEBUG is specified we'll handle
// serial data as direct human input and only
// transmit when we get a LF character
#if SERIAL_DEBUG
// If we have not yet surpassed the maximum frame length
// and the byte is not a "transmit" (newline) character,
// we should store it for transmission.
if ((serialLen < CONFIG_AX25_FRAME_BUF_LEN) && (sbyte != 10)) {
// Put the read byte into the buffer;
serialBuffer[serialLen] = sbyte;
// Increment the read length counter
serialLen++;
} else {
// If one of the above conditions were actually the
// case, it means we have to transmit, se we set
// transmission flag to true.
sertx = true;
}
#else
// Otherwise we assume the modem is running
// in automated mode, and we push out data
// as it becomes available. We either transmit
// immediately when the max frame length has
// been reached, or when we get no input for
// a certain amount of time.
if (serialLen < CONFIG_AX25_FRAME_BUF_LEN-1) {
// Put the read byte into the buffer;
serialBuffer[serialLen] = sbyte;
// Increment the read length counter
serialLen++;
} else {
// If max frame length has been reached
// we need to transmit.
serialBuffer[serialLen] = sbyte;
serialLen++;
sertx = true;
}
start = timer_clock();
#endif
} else {
if (!SERIAL_DEBUG && serialLen > 0 && timer_clock() - start > ms_to_ticks(TX_MAXWAIT)) {
sertx = true;
}
}
if (sertx) {
ss_serialCallback(serialBuffer, serialLen, &ser, &ax25);
sertx = false;
serialLen = 0;
}
}
#endif
return 0;
}

81
Modem/protocol/KISS.c
View File

@ -0,0 +1,81 @@
#include <stdlib.h>
#include <string.h>
#include <avr/eeprom.h>
#define F_CPU 16000000UL
#include <util/delay.h>
#include <drv/timer.h> // Timer driver from BertOS
#include "KISS.h"
static uint8_t serialBuffer[CONFIG_AX25_FRAME_BUF_LEN+1]; // Buffer for holding incoming serial data
AX25Ctx *ax25ctx;
Serial *serial;
size_t frame_len;
bool IN_FRAME;
bool ESCAPE;
uint8_t command = CMD_UNKNOWN;
unsigned long kiss_preamble = CONFIG_AFSK_PREAMBLE_LEN;
unsigned long kiss_tail = CONFIG_AFSK_TRAILER_LEN;
void kiss_init(AX25Ctx *ax25, Serial *ser) {
ax25ctx = ax25;
serial = ser;
}
void kiss_messageCallback(AX25Ctx *ctx) {
kfile_putc(FEND, &serial->fd);
kfile_putc(0x00, &serial->fd);
for (unsigned i = 0; i < ctx->frm_len; i++) {
uint8_t b = ctx->buf[i];
if (b == FEND) {
kfile_putc(FESC, &serial->fd);
kfile_putc(TFEND, &serial->fd);
} else if (b == FESC) {
kfile_putc(FESC, &serial->fd);
kfile_putc(TFESC, &serial->fd);
} else {
kfile_putc(b, &serial->fd);
}
}
kfile_putc(FEND, &serial->fd);
}
void fon(void) {
long ts = 300000;
while (ts--) PORTB |= BV(2);
}
void kiss_serialCallback(uint8_t sbyte) {
if (IN_FRAME && sbyte == FEND && command == CMD_DATA) {
IN_FRAME = false;
ax25_sendRaw(ax25ctx, serialBuffer, frame_len);
} else if (sbyte == FEND) {
IN_FRAME = true;
command = CMD_UNKNOWN;
frame_len = 0;
} else if (IN_FRAME && frame_len < CONFIG_AX25_FRAME_BUF_LEN) {
// Have a look at the command byte first
if (frame_len == 0 && command == CMD_UNKNOWN) {
// MicroModem supports only one HDLC port, so we
// strip off the port nibble of the command byte
sbyte = sbyte & 0x0F;
command = sbyte;
} else if (command == CMD_DATA) {
if (sbyte == FESC) {
ESCAPE = true;
} else {
if (ESCAPE) {
if (sbyte == TFEND) sbyte = FEND;
if (sbyte == TFESC) sbyte = FESC;
ESCAPE = false;
}
serialBuffer[frame_len++] = sbyte;
}
} else if (command == CMD_TXDELAY) {
kiss_preamble = sbyte * 10UL;
} else if (command == CMD_TXTAIL) {
kiss_tail = sbyte * 10;
}
}
}

21
Modem/protocol/KISS.h
View File

@ -1,10 +1,27 @@
#ifndef PROTOCOL_KISS
#define PROTOCOL_KISS 0x02
#ifndef _PROTOCOL_KISS
#define _PROTOCOL_KISS 0x02
#define FEND 0xC0
#define FESC 0xDB
#define TFEND 0xDC
#define TFESC 0xDD
#define CMD_UNKNOWN 0xFE
#define CMD_DATA 0x00
#define CMD_TXDELAY 0x01
#define CMD_P 0x02
#define CMD_SLOTTIME 0x03
#define CMD_TXTAIL 0x04
#define CMD_FULLDUPLEX 0x05
#define CMD_SETHARDWARE 0x06
#define CMD_RETURN 0xFF
#include <net/ax25.h>
#include <drv/ser.h>
void kiss_init(AX25Ctx *ax25, Serial *ser);
void kiss_messageCallback(AX25Ctx *ctx);
void kiss_serialCallback(uint8_t sbyte);
void fon(void);
#endif

5
Modem/protocol/SimpleSerial.h
View File

@ -1,9 +1,8 @@
#ifndef PROTOCOL_SIMPLE_SERIAL
#ifndef _PROTOCOL_SIMPLE_SERIAL
#define _PROTOCOL_SIMPLE_SERIAL 0x01
#include <net/ax25.h>
#include <drv/ser.h>
#define PROTOCOL_SIMPLE_SERIAL 0x01
#define DEFAULT_CALLSIGN "NOCALL"
#define DEFAULT_DESTINATION_CALL "APZMDM"

99
bertos/net/ax25.c
View File

@ -70,51 +70,56 @@
static void ax25_decode(AX25Ctx *ctx)
{
AX25Msg msg;
uint8_t *buf = ctx->buf;
DECODE_CALL(buf, msg.dst.call);
msg.dst.ssid = (*buf++ >> 1) & 0x0F;
DECODE_CALL(buf, msg.src.call);
msg.src.ssid = (*buf >> 1) & 0x0F;
/* Repeater addresses */
#if CONFIG_AX25_RPT_LST
for (msg.rpt_cnt = 0; !(*buf++ & 0x01) && (msg.rpt_cnt < countof(msg.rpt_lst)); msg.rpt_cnt++)
{
DECODE_CALL(buf, msg.rpt_lst[msg.rpt_cnt].call);
msg.rpt_lst[msg.rpt_cnt].ssid = (*buf >> 1) & 0x0F;
AX25_SET_REPEATED(&msg, msg.rpt_cnt, (*buf & 0x80));
}
#if SERIAL_PROTOCOL == PROTOCOL_KISS
if (ctx->hook)
ctx->hook(ctx);
#else
while (!(*buf++ & 0x01))
AX25Msg msg;
uint8_t *buf = ctx->buf;
DECODE_CALL(buf, msg.dst.call);
msg.dst.ssid = (*buf++ >> 1) & 0x0F;
DECODE_CALL(buf, msg.src.call);
msg.src.ssid = (*buf >> 1) & 0x0F;
/* Repeater addresses */
#if CONFIG_AX25_RPT_LST
for (msg.rpt_cnt = 0; !(*buf++ & 0x01) && (msg.rpt_cnt < countof(msg.rpt_lst)); msg.rpt_cnt++)
{
DECODE_CALL(buf, msg.rpt_lst[msg.rpt_cnt].call);
msg.rpt_lst[msg.rpt_cnt].ssid = (*buf >> 1) & 0x0F;
AX25_SET_REPEATED(&msg, msg.rpt_cnt, (*buf & 0x80));
}
#else
while (!(*buf++ & 0x01))
{
char rpt[6];
uint8_t ssid;
DECODE_CALL(buf, rpt);
ssid = (*buf >> 1) & 0x0F;
}
#endif
msg.ctrl = *buf++;
if (msg.ctrl != AX25_CTRL_UI)
{
char rpt[6];
uint8_t ssid;
DECODE_CALL(buf, rpt);
ssid = (*buf >> 1) & 0x0F;
return;
}
msg.pid = *buf++;
if (msg.pid != AX25_PID_NOLAYER3)
{
return;
}
msg.len = ctx->frm_len - 2 - (buf - ctx->buf);
msg.info = buf;
if (ctx->hook)
ctx->hook(&msg);
#endif
msg.ctrl = *buf++;
if (msg.ctrl != AX25_CTRL_UI)
{
return;
}
msg.pid = *buf++;
if (msg.pid != AX25_PID_NOLAYER3)
{
return;
}
msg.len = ctx->frm_len - 2 - (buf - ctx->buf);
msg.info = buf;
if (ctx->hook)
ctx->hook(&msg);
}
@ -258,6 +263,20 @@ void ax25_sendVia(AX25Ctx *ctx, const AX25Call *path, size_t path_len, const voi
kfile_putc(HDLC_FLAG, ctx->ch);
}
void ax25_sendRaw(AX25Ctx *ctx, void *_buf, size_t len) {
ctx->crc_out = CRC_CCITT_INIT_VAL;
kfile_putc(HDLC_FLAG, ctx->ch);
const uint8_t *buf = (const uint8_t *)_buf;
while (len--) ax25_putchar(ctx, *buf++);
uint8_t crcl = (ctx->crc_out & 0xff) ^ 0xff;
uint8_t crch = (ctx->crc_out >> 8) ^ 0xff;
ax25_putchar(ctx, crcl);
ax25_putchar(ctx, crch);
kfile_putc(HDLC_FLAG, ctx->ch);
}
/**
* Init the AX25 protocol decoder.
*

11
bertos/net/ax25.h
View File

@ -45,6 +45,7 @@
#ifndef NET_AX25_H
#define NET_AX25_H
#include "config.h" // Various configuration values
#include "cfg/cfg_ax25.h"
#include <cfg/compiler.h>
@ -62,11 +63,18 @@
#define AX25_CRC_CORRECT 0xF0B8
struct AX25Msg; // fwd declaration
struct AX25Ctx; // fwd declaration
/**
* Type for AX25 messages callback.
*/
typedef void (*ax25_callback_t)(struct AX25Msg *msg);
#if SERIAL_PROTOCOL == PROTOCOL_SIMPLE_SERIAL
typedef void (*ax25_callback_t)(struct AX25Msg *msg);
#endif
#if SERIAL_PROTOCOL == PROTOCOL_KISS
typedef void (*ax25_callback_t)(struct AX25Ctx *ctx);
#endif
/**
@ -170,6 +178,7 @@ typedef struct AX25Msg
void ax25_poll(AX25Ctx *ctx);
void ax25_sendVia(AX25Ctx *ctx, const AX25Call *path, size_t path_len, const void *_buf, size_t len);
void ax25_sendRaw(AX25Ctx *ctx, void *_buf, size_t len);
/**
* Send an AX25 frame on the channel.

2
buildrev.h
View File

@ -1,2 +1,2 @@
#define VERS_BUILD 2224
#define VERS_BUILD 2341
#define VERS_HOST "shard"

BIN
images/Modem.elf
View File

Binary file not shown.

62
images/Modem.hex
View File

@ -194,7 +194,7 @@
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