static device_status_t
suunto_eon_device_foreach (device_t *abstract, dive_callback_t callback, void *userdata)
{
dc_buffer_t *buffer = dc_buffer_new (SUUNTO_EON_MEMORY_SIZE);
if (buffer == NULL)
return DEVICE_STATUS_MEMORY;
device_status_t rc = suunto_eon_device_dump (abstract, buffer);
if (rc != DEVICE_STATUS_SUCCESS) {
dc_buffer_free (buffer);
return rc;
}
// Emit a device info event.
unsigned char *data = dc_buffer_get_data (buffer);
device_devinfo_t devinfo;
devinfo.model = 0;
devinfo.firmware = 0;
devinfo.serial = array_uint24_be (data + 244);
device_event_emit (abstract, DEVICE_EVENT_DEVINFO, &devinfo);
rc = suunto_eon_extract_dives (abstract,
dc_buffer_get_data (buffer), dc_buffer_get_size (buffer), callback, userdata);
dc_buffer_free (buffer);
return rc;
}
static dc_status_t
hw_ostc_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, void *userdata)
{
dc_buffer_t *buffer = dc_buffer_new (0);
if (buffer == NULL)
return DC_STATUS_NOMEMORY;
dc_status_t rc = hw_ostc_device_dump (abstract, buffer);
if (rc != DC_STATUS_SUCCESS) {
dc_buffer_free (buffer);
return rc;
}
// Emit a device info event.
unsigned char *data = dc_buffer_get_data (buffer);
dc_event_devinfo_t devinfo;
devinfo.firmware = array_uint16_be (data + 264);
devinfo.serial = array_uint16_le (data + 6);
if (devinfo.serial > 7000)
devinfo.model = 3; // OSTC 2C
else if (devinfo.serial > 2048)
devinfo.model = 2; // OSTC 2N
else if (devinfo.serial > 300)
devinfo.model = 1; // OSTC Mk2
else
devinfo.model = 0; // OSTC
device_event_emit (abstract, DC_EVENT_DEVINFO, &devinfo);
rc = hw_ostc_extract_dives (abstract, dc_buffer_get_data (buffer),
dc_buffer_get_size (buffer), callback, userdata);
dc_buffer_free (buffer);
return rc;
}
dc_status_t
test_dump_memory (const char* name, const char* filename)
{
dc_context_t *context = NULL;
dc_device_t *device = NULL;
dc_context_new (&context);
dc_context_set_loglevel (context, DC_LOGLEVEL_ALL);
dc_context_set_logfunc (context, logfunc, NULL);
message ("oceanic_atom2_device_open\n");
dc_status_t rc = oceanic_atom2_device_open (&device, context, name);
if (rc != DC_STATUS_SUCCESS) {
WARNING ("Error opening serial port.");
dc_context_free (context);
return rc;
}
dc_buffer_t *buffer = dc_buffer_new (0);
message ("dc_device_dump\n");
rc = dc_device_dump (device, buffer);
if (rc != DC_STATUS_SUCCESS) {
WARNING ("Cannot read memory.");
dc_buffer_free (buffer);
dc_device_close (device);
dc_context_free (context);
return rc;
}
message ("Dumping data\n");
FILE* fp = fopen (filename, "wb");
if (fp != NULL) {
fwrite (dc_buffer_get_data (buffer), sizeof (unsigned char), dc_buffer_get_size (buffer), fp);
fclose (fp);
}
dc_buffer_free (buffer);
message ("dc_device_foreach\n");
rc = dc_device_foreach (device, NULL, NULL);
if (rc != DC_STATUS_SUCCESS) {
WARNING ("Cannot read dives.");
dc_device_close (device);
dc_context_free (context);
return rc;
}
message ("dc_device_close\n");
rc = dc_device_close (device);
if (rc != DC_STATUS_SUCCESS) {
WARNING ("Cannot close device.");
dc_context_free (context);
return rc;
}
dc_context_free (context);
return DC_STATUS_SUCCESS;
}
static dc_status_t
shearwater_predator_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, void *userdata)
{
dc_buffer_t *buffer = dc_buffer_new (SZ_MEMORY);
if (buffer == NULL)
return DC_STATUS_NOMEMORY;
dc_status_t rc = shearwater_predator_device_dump (abstract, buffer);
if (rc != DC_STATUS_SUCCESS) {
dc_buffer_free (buffer);
return rc;
}
// Emit a device info event.
unsigned char *data = dc_buffer_get_data (buffer);
dc_event_devinfo_t devinfo;
devinfo.model = data[0x2000D];
devinfo.firmware = bcd2dec (data[0x2000A]);
devinfo.serial = array_uint32_be (data + 0x20002);
device_event_emit (abstract, DC_EVENT_DEVINFO, &devinfo);
rc = shearwater_predator_extract_dives (abstract, data, SZ_MEMORY, callback, userdata);
dc_buffer_free (buffer);
return rc;
}
device_status_t
suunto_common2_device_dump (device_t *abstract, dc_buffer_t *buffer)
{
// Erase the current contents of the buffer and
// allocate the required amount of memory.
if (!dc_buffer_clear (buffer) || !dc_buffer_resize (buffer, SZ_MEMORY)) {
WARNING ("Insufficient buffer space available.");
return DEVICE_STATUS_MEMORY;
}
return device_dump_read (abstract, dc_buffer_get_data (buffer),
dc_buffer_get_size (buffer), SZ_PACKET);
}
device_status_t
test_dump_memory (const char* filename)
{
device_t *device = NULL;
message ("uwatec_smart_device_open\n");
device_status_t rc = uwatec_smart_device_open (&device);
if (rc != DEVICE_STATUS_SUCCESS) {
WARNING ("Cannot open device.");
return rc;
}
message ("device_version\n");
unsigned char version[UWATEC_SMART_VERSION_SIZE] = {0};
rc = device_version (device, version, sizeof (version));
if (rc != DEVICE_STATUS_SUCCESS) {
WARNING ("Cannot identify computer.");
device_close (device);
return rc;
}
dc_buffer_t *buffer = dc_buffer_new (0);
message ("device_dump\n");
rc = device_dump (device, buffer);
if (rc != DEVICE_STATUS_SUCCESS) {
WARNING ("Cannot read memory.");
dc_buffer_free (buffer);
device_close (device);
return rc;
}
message ("Dumping data\n");
FILE* fp = fopen (filename, "wb");
if (fp != NULL) {
fwrite (dc_buffer_get_data (buffer), sizeof (unsigned char), dc_buffer_get_size (buffer), fp);
fclose (fp);
}
dc_buffer_free (buffer);
message ("device_close\n");
rc = device_close (device);
if (rc != DEVICE_STATUS_SUCCESS) {
WARNING ("Cannot close device.");
return rc;
}
return DEVICE_STATUS_SUCCESS;
}
device_status_t
test_dump_memory (const char* name, const char* filename)
{
device_t *device = NULL;
message ("reefnet_sensuspro_device_open\n");
device_status_t rc = reefnet_sensuspro_device_open (&device, name);
if (rc != DEVICE_STATUS_SUCCESS) {
WARNING ("Error opening serial port.");
return rc;
}
time_t now = time (NULL);
char datetime[21] = {0};
strftime (datetime, sizeof (datetime), "%Y-%m-%dT%H:%M:%SZ", gmtime (&now));
message ("time=%lu (%s)\n", (unsigned long)now, datetime);
dc_buffer_t *buffer = dc_buffer_new (0);
message ("device_dump\n");
rc = device_dump (device, buffer);
if (rc != DEVICE_STATUS_SUCCESS) {
WARNING ("Cannot read memory.");
dc_buffer_free (buffer);
device_close (device);
return rc;
}
message ("Dumping data\n");
FILE* fp = fopen (filename, "wb");
if (fp != NULL) {
fwrite (dc_buffer_get_data (buffer), sizeof (unsigned char), dc_buffer_get_size (buffer), fp);
fclose (fp);
}
dc_buffer_free (buffer);
message ("device_close\n");
rc = device_close (device);
if (rc != DEVICE_STATUS_SUCCESS) {
WARNING ("Cannot close device.");
return rc;
}
return DEVICE_STATUS_SUCCESS;
}
static void
event_cb (dc_device_t *device, dc_event_type_t event, const void *data, void *userdata)
{
const dc_event_devinfo_t *devinfo = (const dc_event_devinfo_t *) data;
event_data_t *eventdata = (event_data_t *) userdata;
// Forward to the default event handler.
dctool_event_cb (device, event, data, userdata);
switch (event) {
case DC_EVENT_DEVINFO:
// Load the fingerprint from the cache. If there is no
// fingerprint present in the cache, a NULL buffer is returned,
// and the registered fingerprint will be cleared.
if (eventdata->cachedir) {
char filename[1024] = {0};
dc_family_t family = DC_FAMILY_NULL;
dc_buffer_t *fingerprint = NULL;
// Generate the fingerprint filename.
family = dc_device_get_type (device);
snprintf (filename, sizeof (filename), "%s/%s-%08X.bin",
eventdata->cachedir, dctool_family_name (family), devinfo->serial);
// Read the fingerprint file.
fingerprint = dctool_file_read (filename);
// Register the fingerprint data.
dc_device_set_fingerprint (device,
dc_buffer_get_data (fingerprint),
dc_buffer_get_size (fingerprint));
// Free the buffer again.
dc_buffer_free (fingerprint);
}
// Keep a copy of the event data. It will be used for generating
// the fingerprint filename again after a (successful) download.
eventdata->devinfo = *devinfo;
break;
default:
break;
}
}
static dc_status_t
uwatec_meridian_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, void *userdata)
{
dc_buffer_t *buffer = dc_buffer_new (0);
if (buffer == NULL)
return DC_STATUS_NOMEMORY;
dc_status_t rc = uwatec_meridian_device_dump (abstract, buffer);
if (rc != DC_STATUS_SUCCESS) {
dc_buffer_free (buffer);
return rc;
}
rc = uwatec_meridian_extract_dives (abstract,
dc_buffer_get_data (buffer), dc_buffer_get_size (buffer), callback, userdata);
dc_buffer_free (buffer);
return rc;
}
device_status_t
test_dump_memory (const char* name, const char* filename)
{
device_t *device = NULL;
message ("suunto_solution_device_open\n");
int rc = suunto_solution_device_open (&device, name);
if (rc != DEVICE_STATUS_SUCCESS) {
WARNING ("Error opening serial port.");
return rc;
}
dc_buffer_t *buffer = dc_buffer_new (0);
message ("device_dump\n");
rc = device_dump (device, buffer);
if (rc != DEVICE_STATUS_SUCCESS) {
WARNING ("Cannot read memory.");
dc_buffer_free (buffer);
device_close (device);
return rc;
}
message ("Dumping data\n");
FILE* fp = fopen (filename, "wb");
if (fp != NULL) {
fwrite (dc_buffer_get_data (buffer), sizeof (unsigned char), dc_buffer_get_size (buffer), fp);
fclose (fp);
}
dc_buffer_free (buffer);
message ("device_close\n");
rc = device_close (device);
if (rc != DEVICE_STATUS_SUCCESS) {
WARNING ("Cannot close device.");
return rc;
}
return DEVICE_STATUS_SUCCESS;
}
static dc_status_t
dowork(dc_context_t *context, dc_descriptor_t *descriptor, program_options_t *options, dc_buffer_t *fingerprint) {
dc_status_t rc = DC_STATUS_SUCCESS;
/* initialize the device data */
device_data_t devdata = {{0}};
/* open the device */
message("Opening the device (%s, %s, %s.\n",
dc_descriptor_get_vendor(descriptor),
dc_descriptor_get_product(descriptor),
options->devname ? options->devname : "null");
dc_device_t *device = NULL;
rc = dc_device_open(&device, context, descriptor, options->devname);
if (rc != DC_STATUS_SUCCESS) {
WARNING("Error opening device.");
return rc;
}
/* register the event handler */
message("Registering the event handler.\n");
int events = DC_EVENT_WAITING | DC_EVENT_PROGRESS | DC_EVENT_DEVINFO | DC_EVENT_CLOCK;
rc = dc_device_set_events(device, events, event_cb, &devdata);
if (rc != DC_STATUS_SUCCESS) {
WARNING("Error registering the event handler.");
dc_device_close(device);
return rc;
}
/* register the cancellation handler */
message("Registering the cancellation handler.\n");
rc = dc_device_set_cancel(device, cancel_cb, NULL);
if (rc != DC_STATUS_SUCCESS) {
WARNING("Error registering the cancellation handler.");
dc_device_close(device);
return rc;
}
/* register the fingerprint data */
if (fingerprint) {
message("Registering the fingerprint data.\n");
rc = dc_device_set_fingerprint(device, dc_buffer_get_data(fingerprint), dc_buffer_get_size(fingerprint));
if (rc != DC_STATUS_SUCCESS) {
WARNING("Error registerting the fingerprint data");
dc_device_close(device);
return rc;
}
}
/* dump the memory if requested */
if (options->dumpMemory) {
WARNING("Memory dump not enabled.");
}
/* dump the dives if requested */
if (options->dumpDives) {
/* initialize the dive data */
dive_data_t divedata = {0};
dif_dive_collection_t *dc = dif_dive_collection_alloc();
divedata.device = device;
divedata.fingerprint = NULL;
divedata.number = 0;
divedata.dc = dc;
/* download the dives */
message("Downloading the dives.\n");
rc = dc_device_foreach(device, dive_cb, &divedata);
if (rc != DC_STATUS_SUCCESS) {
WARNING("Error downloading the dives.");
dc_buffer_free(divedata.fingerprint);
dc_device_close (device);
return rc;
}
xml_options_t *xmlOptions = dif_xml_options_alloc();
xmlOptions->filename = options->xmlfile;
xmlOptions->useInvalidElements = options->useInvalidElements;
if (options->truncateDives) {
divedata.dc = dif_alg_dc_truncate_dives(divedata.dc);
}
if (options->initialPressureFix) {
divedata.dc = dif_alg_dc_initial_pressure_fix(divedata.dc);
}
dif_save_dive_collection_uddf_options(divedata.dc, xmlOptions);
/* free the fingerprint buffer */
dc_buffer_free(divedata.fingerprint);
dif_dive_collection_free(divedata.dc);
dif_xml_options_free(xmlOptions);
}
/* close the device */
message("Closing the device.\n");
rc = dc_device_close(device);
if (rc != DC_STATUS_SUCCESS) {
WARNING("Error closing the device.");
return rc;
}
return DC_STATUS_SUCCESS;
}
static dc_status_t
uwatec_meridian_device_dump (dc_device_t *abstract, dc_buffer_t *buffer)
{
uwatec_meridian_device_t *device = (uwatec_meridian_device_t*) abstract;
dc_status_t rc = DC_STATUS_SUCCESS;
// Erase the current contents of the buffer.
if (!dc_buffer_clear (buffer)) {
ERROR (abstract->context, "Insufficient buffer space available.");
return DC_STATUS_NOMEMORY;
}
// Enable progress notifications.
dc_event_progress_t progress = EVENT_PROGRESS_INITIALIZER;
device_event_emit (&device->base, DC_EVENT_PROGRESS, &progress);
// Command template.
unsigned char command[9] = {0x00,
(device->timestamp ) & 0xFF,
(device->timestamp >> 8 ) & 0xFF,
(device->timestamp >> 16) & 0xFF,
(device->timestamp >> 24) & 0xFF,
0x10,
0x27,
0,
0};
// Read the model number.
command[0] = 0x10;
unsigned char model[1] = {0};
rc = uwatec_meridian_transfer (device, command, 1, model, sizeof (model));
if (rc != DC_STATUS_SUCCESS)
return rc;
// Read the serial number.
command[0] = 0x14;
unsigned char serial[4] = {0};
rc = uwatec_meridian_transfer (device, command, 1, serial, sizeof (serial));
if (rc != DC_STATUS_SUCCESS)
return rc;
// Read the device clock.
command[0] = 0x1A;
unsigned char devtime[4] = {0};
rc = uwatec_meridian_transfer (device, command, 1, devtime, sizeof (devtime));
if (rc != DC_STATUS_SUCCESS)
return rc;
// Store the clock calibration values.
device->systime = dc_datetime_now ();
device->devtime = array_uint32_le (devtime);
// Update and emit a progress event.
progress.current += 9;
device_event_emit (&device->base, DC_EVENT_PROGRESS, &progress);
// Emit a clock event.
dc_event_clock_t clock;
clock.systime = device->systime;
clock.devtime = device->devtime;
device_event_emit (&device->base, DC_EVENT_CLOCK, &clock);
// Emit a device info event.
dc_event_devinfo_t devinfo;
devinfo.model = model[0];
devinfo.firmware = 0;
devinfo.serial = array_uint32_le (serial);
device_event_emit (&device->base, DC_EVENT_DEVINFO, &devinfo);
// Data Length.
command[0] = 0xC6;
unsigned char answer[4] = {0};
rc = uwatec_meridian_transfer (device, command, sizeof (command), answer, sizeof (answer));
if (rc != DC_STATUS_SUCCESS)
return rc;
unsigned int length = array_uint32_le (answer);
// Update and emit a progress event.
progress.maximum = 4 + 9 + (length ? length + 4 : 0);
progress.current += 4;
device_event_emit (&device->base, DC_EVENT_PROGRESS, &progress);
if (length == 0)
return DC_STATUS_SUCCESS;
// Allocate the required amount of memory.
if (!dc_buffer_resize (buffer, length)) {
ERROR (abstract->context, "Insufficient buffer space available.");
return DC_STATUS_NOMEMORY;
}
unsigned char *data = dc_buffer_get_data (buffer);
// Data.
command[0] = 0xC4;
rc = uwatec_meridian_transfer (device, command, sizeof (command), answer, sizeof (answer));
if (rc != DC_STATUS_SUCCESS)
return rc;
unsigned int total = array_uint32_le (answer);
// Update and emit a progress event.
progress.current += 4;
device_event_emit (&device->base, DC_EVENT_PROGRESS, &progress);
if (total != length + 4) {
ERROR (abstract->context, "Received an unexpected size.");
return DC_STATUS_PROTOCOL;
}
unsigned int nbytes = 0;
while (nbytes < length) {
// Read the header.
unsigned char header[5];
int n = serial_read (device->port, header, sizeof (header));
if (n != sizeof (header)) {
ERROR (abstract->context, "Failed to receive the header.");
return EXITCODE (n);
}
// Get the packet size.
unsigned int packetsize = array_uint32_le (header);
if (packetsize < 1 || nbytes + packetsize - 1 > length) {
WARNING (abstract->context, "Unexpected header.");
return DC_STATUS_PROTOCOL;
}
// Read the packet data.
n = serial_read (device->port, data + nbytes, packetsize - 1);
if (n != packetsize - 1) {
ERROR (abstract->context, "Failed to receive the packet.");
return EXITCODE (n);
}
// Read the checksum.
unsigned char csum = 0x00;
n = serial_read (device->port, &csum, sizeof (csum));
if (n != sizeof (csum)) {
ERROR (abstract->context, "Failed to receive the checksum.");
return EXITCODE (n);
}
// Verify the checksum.
unsigned char ccsum = 0x00;
ccsum = checksum_xor_uint8 (header, sizeof (header), ccsum);
ccsum = checksum_xor_uint8 (data + nbytes, packetsize - 1, ccsum);
if (csum != ccsum) {
ERROR (abstract->context, "Unexpected answer checksum.");
return DC_STATUS_PROTOCOL;
}
// Update and emit a progress event.
progress.current += packetsize - 1;
device_event_emit (&device->base, DC_EVENT_PROGRESS, &progress);
nbytes += packetsize - 1;
}
return DC_STATUS_SUCCESS;
}
dc_status_t
hw_ostc_device_screenshot (dc_device_t *abstract, dc_buffer_t *buffer, hw_ostc_format_t format)
{
hw_ostc_device_t *device = (hw_ostc_device_t *) abstract;
if (!ISINSTANCE (abstract))
return DC_STATUS_INVALIDARGS;
// Erase the current contents of the buffer.
if (!dc_buffer_clear (buffer)) {
ERROR (abstract->context, "Insufficient buffer space available.");
return DC_STATUS_NOMEMORY;
}
// Bytes per pixel (RGB formats only).
unsigned int bpp = 0;
if (format == HW_OSTC_FORMAT_RAW) {
// The RAW format has a variable size, depending on the actual image
// content. Usually the total size is around 4K, which is used as an
// initial guess and expanded when necessary.
if (!dc_buffer_reserve (buffer, 4096)) {
ERROR (abstract->context, "Insufficient buffer space available.");
return DC_STATUS_NOMEMORY;
}
} else {
// The RGB formats have a fixed size, depending only on the dimensions
// and the number of bytes per pixel. The required amount of memory is
// allocated immediately.
bpp = (format == HW_OSTC_FORMAT_RGB16) ? 2 : 3;
if (!dc_buffer_resize (buffer, WIDTH * HEIGHT * bpp)) {
ERROR (abstract->context, "Insufficient buffer space available.");
return DC_STATUS_NOMEMORY;
}
}
// Enable progress notifications.
dc_event_progress_t progress = EVENT_PROGRESS_INITIALIZER;
progress.maximum = WIDTH * HEIGHT;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
// Send the command.
dc_status_t rc = hw_ostc_send (device, 'l', 1);
if (rc != DC_STATUS_SUCCESS)
return rc;
// Cache the pointer to the image data (RGB formats only).
unsigned char *image = dc_buffer_get_data (buffer);
// The OSTC sends the image data in a column by column layout, which is
// converted on the fly to a more convenient row by row layout as used
// in the majority of image formats. This conversions requires knowledge
// of the pixel coordinates.
unsigned int x = 0, y = 0;
unsigned int npixels = 0;
while (npixels < WIDTH * HEIGHT) {
unsigned char raw[3] = {0};
int n = serial_read (device->port, raw, 1);
if (n != 1) {
ERROR (abstract->context, "Failed to receive the packet.");
return EXITCODE (n);
}
unsigned int nbytes = n;
unsigned int count = raw[0];
if ((count & 0x80) == 0x00) {
// Black pixel.
raw[1] = raw[2] = BLACK;
count &= 0x7F;
} else if ((count & 0xC0) == 0xC0) {
// White pixel.
raw[1] = raw[2] = WHITE;
count &= 0x3F;
} else {
// Color pixel.
n = serial_read (device->port, raw + 1, 2);
if (n != 2) {
ERROR (abstract->context, "Failed to receive the packet.");
return EXITCODE (n);
}
nbytes += n;
count &= 0x3F;
}
count++;
// Check for buffer overflows.
if (npixels + count > WIDTH * HEIGHT) {
ERROR (abstract->context, "Unexpected number of pixels received.");
return DC_STATUS_DATAFORMAT;
}
if (format == HW_OSTC_FORMAT_RAW) {
// Append the raw data to the output buffer.
dc_buffer_append (buffer, raw, nbytes);
} else {
// Store the decompressed data in the output buffer.
for (unsigned int i = 0; i < count; ++i) {
// Calculate the offset to the current pixel (row layout)
unsigned int offset = (y * WIDTH + x) * bpp;
if (format == HW_OSTC_FORMAT_RGB16) {
image[offset + 0] = raw[1];
image[offset + 1] = raw[2];
} else {
unsigned int value = (raw[1] << 8) + raw[2];
unsigned char r = (value & 0xF800) >> 11;
unsigned char g = (value & 0x07E0) >> 5;
unsigned char b = (value & 0x001F);
image[offset + 0] = 255 * r / 31;
image[offset + 1] = 255 * g / 63;
image[offset + 2] = 255 * b / 31;
}
// Move to the next pixel coordinate (column layout).
y++;
if (y == HEIGHT) {
y = 0;
x++;
}
}
}
// Update and emit a progress event.
progress.current += count;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
npixels += count;
}
return DC_STATUS_SUCCESS;
}
static dc_status_t
shearwater_petrel_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, void *userdata)
{
shearwater_petrel_device_t *device = (shearwater_petrel_device_t *) abstract;
dc_status_t rc = DC_STATUS_SUCCESS;
// Allocate memory buffers for the manifests.
dc_buffer_t *buffer = dc_buffer_new (MANIFEST_SIZE);
dc_buffer_t *manifests = dc_buffer_new (MANIFEST_SIZE);
if (buffer == NULL || manifests == NULL) {
ERROR (abstract->context, "Insufficient buffer space available.");
dc_buffer_free (buffer);
dc_buffer_free (manifests);
return DC_STATUS_NOMEMORY;
}
while (1) {
// Download a manifest.
rc = shearwater_common_download (&device->base, buffer, MANIFEST_ADDR, MANIFEST_SIZE, 0);
if (rc != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to download the manifest.");
dc_buffer_free (buffer);
dc_buffer_free (manifests);
return rc;
}
// Cache the buffer pointer and size.
unsigned char *data = dc_buffer_get_data (buffer);
unsigned int size = dc_buffer_get_size (buffer);
// Process the records in the manifest.
unsigned int count = 0;
unsigned int offset = 0;
while (offset < size) {
// Check for a valid dive header.
unsigned int header = array_uint16_be (data + offset);
if (header != 0xA5C4)
break;
// Check the fingerprint data.
if (memcmp (data + offset + 4, device->fingerprint, sizeof (device->fingerprint)) == 0)
break;
offset += RECORD_SIZE;
count++;
}
// Append the manifest records to the main buffer.
if (!dc_buffer_append (manifests, data, count * RECORD_SIZE)) {
ERROR (abstract->context, "Insufficient buffer space available.");
dc_buffer_free (buffer);
dc_buffer_free (manifests);
return DC_STATUS_NOMEMORY;
}
// Stop downloading manifest if there are no more records.
if (count != RECORD_COUNT)
break;
}
// Cache the buffer pointer and size.
unsigned char *data = dc_buffer_get_data (manifests);
unsigned int size = dc_buffer_get_size (manifests);
unsigned int offset = 0;
while (offset < size) {
// Get the address of the dive.
unsigned int address = array_uint32_be (data + offset + 20);
// Download the dive.
rc = shearwater_common_download (&device->base, buffer, DIVE_ADDR + address, DIVE_SIZE, 1);
if (rc != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to download the dive.");
dc_buffer_free (buffer);
dc_buffer_free (manifests);
return rc;
}
unsigned char *buf = dc_buffer_get_data (buffer);
unsigned int len = dc_buffer_get_size (buffer);
if (callback && !callback (buf, len, buf + 12, sizeof (device->fingerprint), userdata))
break;
offset += RECORD_SIZE;
}
dc_buffer_free (manifests);
dc_buffer_free (buffer);
return rc;
}
static dc_status_t
download (dc_context_t *context, dc_descriptor_t *descriptor, const char *devname, const char *cachedir, dc_buffer_t *fingerprint, dctool_output_t *output)
{
dc_status_t rc = DC_STATUS_SUCCESS;
dc_device_t *device = NULL;
dc_buffer_t *ofingerprint = NULL;
// Open the device.
message ("Opening the device (%s %s, %s).\n",
dc_descriptor_get_vendor (descriptor),
dc_descriptor_get_product (descriptor),
devname ? devname : "null");
rc = dc_device_open (&device, context, descriptor, devname);
if (rc != DC_STATUS_SUCCESS) {
ERROR ("Error opening the device.");
goto cleanup;
}
// Initialize the event data.
event_data_t eventdata = {0};
if (fingerprint) {
eventdata.cachedir = NULL;
} else {
eventdata.cachedir = cachedir;
}
// Register the event handler.
message ("Registering the event handler.\n");
int events = DC_EVENT_WAITING | DC_EVENT_PROGRESS | DC_EVENT_DEVINFO | DC_EVENT_CLOCK | DC_EVENT_VENDOR;
rc = dc_device_set_events (device, events, event_cb, &eventdata);
if (rc != DC_STATUS_SUCCESS) {
ERROR ("Error registering the event handler.");
goto cleanup;
}
// Register the cancellation handler.
message ("Registering the cancellation handler.\n");
rc = dc_device_set_cancel (device, dctool_cancel_cb, NULL);
if (rc != DC_STATUS_SUCCESS) {
ERROR ("Error registering the cancellation handler.");
goto cleanup;
}
// Register the fingerprint data.
if (fingerprint) {
message ("Registering the fingerprint data.\n");
rc = dc_device_set_fingerprint (device, dc_buffer_get_data (fingerprint), dc_buffer_get_size (fingerprint));
if (rc != DC_STATUS_SUCCESS) {
ERROR ("Error registering the fingerprint data.");
goto cleanup;
}
}
// Initialize the dive data.
dive_data_t divedata = {0};
divedata.device = device;
divedata.fingerprint = &ofingerprint;
divedata.number = 0;
divedata.output = output;
// Download the dives.
message ("Downloading the dives.\n");
rc = dc_device_foreach (device, dive_cb, &divedata);
if (rc != DC_STATUS_SUCCESS) {
ERROR ("Error downloading the dives.");
goto cleanup;
}
// Store the fingerprint data.
if (cachedir && ofingerprint) {
char filename[1024] = {0};
dc_family_t family = DC_FAMILY_NULL;
// Generate the fingerprint filename.
family = dc_device_get_type (device);
snprintf (filename, sizeof (filename), "%s/%s-%08X.bin",
cachedir, dctool_family_name (family), eventdata.devinfo.serial);
// Write the fingerprint file.
dctool_file_write (filename, ofingerprint);
}
cleanup:
dc_buffer_free (ofingerprint);
dc_device_close (device);
return rc;
}
static dc_status_t
atomics_cobalt_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, void *userdata)
{
atomics_cobalt_device_t *device = (atomics_cobalt_device_t *) abstract;
// Enable progress notifications.
dc_event_progress_t progress = EVENT_PROGRESS_INITIALIZER;
progress.maximum = SZ_MEMORY + 2;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
// Emit a vendor event.
dc_event_vendor_t vendor;
vendor.data = device->version;
vendor.size = sizeof (device->version);
device_event_emit (abstract, DC_EVENT_VENDOR, &vendor);
// Emit a device info event.
dc_event_devinfo_t devinfo;
devinfo.model = array_uint16_le (device->version + 12);
devinfo.firmware = (array_uint16_le (device->version + 8) << 16)
+ array_uint16_le (device->version + 10);
devinfo.serial = 0;
for (unsigned int i = 0; i < 8; ++i) {
devinfo.serial *= 10;
devinfo.serial += device->version[i] - '0';
}
device_event_emit (abstract, DC_EVENT_DEVINFO, &devinfo);
// Allocate a memory buffer.
dc_buffer_t *buffer = dc_buffer_new (0);
if (buffer == NULL)
return DC_STATUS_NOMEMORY;
unsigned int ndives = 0;
dc_status_t rc = DC_STATUS_SUCCESS;
while ((rc = atomics_cobalt_read_dive (abstract, buffer, (ndives == 0), &progress)) == DC_STATUS_SUCCESS) {
unsigned char *data = dc_buffer_get_data (buffer);
unsigned int size = dc_buffer_get_size (buffer);
if (size == 0) {
dc_buffer_free (buffer);
return DC_STATUS_SUCCESS;
}
if (memcmp (data + FP_OFFSET, device->fingerprint, sizeof (device->fingerprint)) == 0) {
dc_buffer_free (buffer);
return DC_STATUS_SUCCESS;
}
if (callback && !callback (data, size, data + FP_OFFSET, sizeof (device->fingerprint), userdata)) {
dc_buffer_free (buffer);
return DC_STATUS_SUCCESS;
}
// Adjust the maximum value to take into account the two checksum bytes
// for the next dive. Since we don't know the total number of dives in
// advance, we can't calculate the total number of checksum bytes and
// adjust the maximum on the fly.
progress.maximum += 2;
ndives++;
}
dc_buffer_free (buffer);
return rc;
}
static dc_status_t
atomics_cobalt_read_dive (dc_device_t *abstract, dc_buffer_t *buffer, int init, dc_event_progress_t *progress)
{
#ifdef HAVE_LIBUSB
atomics_cobalt_device_t *device = (atomics_cobalt_device_t *) abstract;
if (device_is_cancelled (abstract))
return DC_STATUS_CANCELLED;
// Erase the current contents of the buffer.
if (!dc_buffer_clear (buffer)) {
ERROR (abstract->context, "Insufficient buffer space available.");
return DC_STATUS_NOMEMORY;
}
// Send the command to the dive computer.
uint8_t bRequest = 0;
if (device->simulation)
bRequest = init ? 0x02 : 0x03;
else
bRequest = init ? 0x09 : 0x0A;
int rc = libusb_control_transfer (device->handle,
LIBUSB_RECIPIENT_DEVICE | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT,
bRequest, 0, 0, NULL, 0, TIMEOUT);
if (rc != LIBUSB_SUCCESS) {
ERROR (abstract->context, "Failed to send the command.");
return EXITCODE(rc);
}
HEXDUMP (abstract->context, DC_LOGLEVEL_INFO, "Write", &bRequest, 1);
unsigned int nbytes = 0;
while (1) {
// Receive the answer from the dive computer.
int length = 0;
unsigned char packet[8 * 1024] = {0};
rc = libusb_bulk_transfer (device->handle, 0x82,
packet, sizeof (packet), &length, TIMEOUT);
if (rc != LIBUSB_SUCCESS) {
ERROR (abstract->context, "Failed to receive the answer.");
return EXITCODE(rc);
}
HEXDUMP (abstract->context, DC_LOGLEVEL_INFO, "Read", packet, length);
// Update and emit a progress event.
if (progress) {
progress->current += length;
device_event_emit (abstract, DC_EVENT_PROGRESS, progress);
}
// Append the packet to the output buffer.
dc_buffer_append (buffer, packet, length);
nbytes += length;
// If we received fewer bytes than requested, the transfer is finished.
if (length < sizeof (packet))
break;
}
// Check for a buffer error.
if (dc_buffer_get_size (buffer) != nbytes) {
ERROR (abstract->context, "Insufficient buffer space available.");
return DC_STATUS_NOMEMORY;
}
// Check for the minimum length.
if (nbytes < 2) {
ERROR (abstract->context, "Data packet is too short.");
return DC_STATUS_PROTOCOL;
}
// When only two 0xFF bytes are received, there are no more dives.
unsigned char *data = dc_buffer_get_data (buffer);
if (nbytes == 2 && data[0] == 0xFF && data[1] == 0xFF) {
dc_buffer_clear (buffer);
return DC_STATUS_SUCCESS;
}
// Verify the checksum of the packet.
unsigned short crc = array_uint16_le (data + nbytes - 2);
unsigned short ccrc = checksum_add_uint16 (data, nbytes - 2, 0x0);
if (crc != ccrc) {
ERROR (abstract->context, "Unexpected answer checksum.");
return DC_STATUS_PROTOCOL;
}
// Remove the checksum bytes.
dc_buffer_slice (buffer, 0, nbytes - 2);
return DC_STATUS_SUCCESS;
#else
return DC_STATUS_UNSUPPORTED;
#endif
}
static dc_status_t
shearwater_petrel_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, void *userdata)
{
shearwater_petrel_device_t *device = (shearwater_petrel_device_t *) abstract;
dc_status_t rc = DC_STATUS_SUCCESS;
// Allocate memory buffers for the manifests.
dc_buffer_t *buffer = dc_buffer_new (MANIFEST_SIZE);
dc_buffer_t *manifests = dc_buffer_new (MANIFEST_SIZE);
if (buffer == NULL || manifests == NULL) {
ERROR (abstract->context, "Insufficient buffer space available.");
dc_buffer_free (buffer);
dc_buffer_free (manifests);
return DC_STATUS_NOMEMORY;
}
// Enable progress notifications.
unsigned int current = 0, maximum = 0;
dc_event_progress_t progress = EVENT_PROGRESS_INITIALIZER;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
// Read the serial number.
rc = shearwater_common_identifier (&device->base, buffer, ID_SERIAL);
if (rc != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to read the serial number.");
dc_buffer_free (buffer);
dc_buffer_free (manifests);
return rc;
}
// Convert to a number.
unsigned char serial[4] = {0};
if (array_convert_hex2bin (dc_buffer_get_data (buffer), dc_buffer_get_size (buffer),
serial, sizeof (serial)) != 0 ) {
ERROR (abstract->context, "Failed to convert the serial number.");
dc_buffer_free (buffer);
dc_buffer_free (manifests);
return DC_STATUS_DATAFORMAT;
}
// Read the firmware version.
rc = shearwater_common_identifier (&device->base, buffer, ID_FIRMWARE);
if (rc != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to read the firmware version.");
dc_buffer_free (buffer);
dc_buffer_free (manifests);
return rc;
}
// Convert to a number.
unsigned int firmware = str2num (dc_buffer_get_data (buffer), dc_buffer_get_size (buffer), 1);
// Read the hardware type.
rc = shearwater_common_identifier (&device->base, buffer, ID_HARDWARE);
if (rc != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to read the hardware type.");
dc_buffer_free (buffer);
dc_buffer_free (manifests);
return rc;
}
// Convert and map to the model number.
unsigned int hardware = array_uint_be (dc_buffer_get_data (buffer), dc_buffer_get_size (buffer));
unsigned int model = 0;
switch (hardware) {
case 0x0808: // Petrel 2
case 0x0909: // Petrel 1
case 0x0B0B: // Petrel 1 (newer hardware)
model = PETREL;
break;
case 0x0A0A: // Nerd 1
case 0x0E0D: // Nerd 2
model = NERD;
break;
case 0x0707:
model = PERDIX;
break;
case 0x0C0D:
model = PERDIXAI;
break;
default:
WARNING (abstract->context, "Unknown hardware type %04x.", hardware);
}
// Emit a device info event.
dc_event_devinfo_t devinfo;
devinfo.model = model;
devinfo.firmware = firmware;
devinfo.serial = array_uint32_be (serial);
device_event_emit (abstract, DC_EVENT_DEVINFO, &devinfo);
while (1) {
// Update the progress state.
// Assume the worst case scenario of a full manifest, and adjust the
// value with the actual number of dives after the manifest has been
// processed.
maximum += 1 + RECORD_COUNT;
// Download a manifest.
progress.current = NSTEPS * current;
progress.maximum = NSTEPS * maximum;
rc = shearwater_common_download (&device->base, buffer, MANIFEST_ADDR, MANIFEST_SIZE, 0, &progress);
if (rc != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to download the manifest.");
dc_buffer_free (buffer);
dc_buffer_free (manifests);
return rc;
}
// Cache the buffer pointer and size.
unsigned char *data = dc_buffer_get_data (buffer);
unsigned int size = dc_buffer_get_size (buffer);
// Process the records in the manifest.
unsigned int count = 0;
unsigned int offset = 0;
while (offset < size) {
// Check for a valid dive header.
unsigned int header = array_uint16_be (data + offset);
if (header != 0xA5C4)
break;
// Check the fingerprint data.
if (memcmp (data + offset + 4, device->fingerprint, sizeof (device->fingerprint)) == 0)
break;
offset += RECORD_SIZE;
count++;
}
// Update the progress state.
current += 1;
maximum -= RECORD_COUNT - count;
// Append the manifest records to the main buffer.
if (!dc_buffer_append (manifests, data, count * RECORD_SIZE)) {
ERROR (abstract->context, "Insufficient buffer space available.");
dc_buffer_free (buffer);
dc_buffer_free (manifests);
return DC_STATUS_NOMEMORY;
}
// Stop downloading manifest if there are no more records.
if (count != RECORD_COUNT)
break;
}
// Update and emit a progress event.
progress.current = NSTEPS * current;
progress.maximum = NSTEPS * maximum;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
// Cache the buffer pointer and size.
unsigned char *data = dc_buffer_get_data (manifests);
unsigned int size = dc_buffer_get_size (manifests);
unsigned int offset = 0;
while (offset < size) {
// Get the address of the dive.
unsigned int address = array_uint32_be (data + offset + 20);
// Download the dive.
progress.current = NSTEPS * current;
progress.maximum = NSTEPS * maximum;
rc = shearwater_common_download (&device->base, buffer, DIVE_ADDR + address, DIVE_SIZE, 1, &progress);
if (rc != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to download the dive.");
dc_buffer_free (buffer);
dc_buffer_free (manifests);
return rc;
}
// Update the progress state.
current += 1;
unsigned char *buf = dc_buffer_get_data (buffer);
unsigned int len = dc_buffer_get_size (buffer);
if (callback && !callback (buf, len, buf + 12, sizeof (device->fingerprint), userdata))
break;
offset += RECORD_SIZE;
}
// Update and emit a progress event.
progress.current = NSTEPS * current;
progress.maximum = NSTEPS * maximum;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
dc_buffer_free (manifests);
dc_buffer_free (buffer);
return rc;
}
dc_status_t
shearwater_common_download (shearwater_common_device_t *device, dc_buffer_t *buffer, unsigned int address, unsigned int size, unsigned int compression)
{
dc_device_t *abstract = (dc_device_t *) device;
dc_status_t rc = DC_STATUS_SUCCESS;
unsigned int n = 0;
unsigned char req_init[] = {
0x35,
(compression ? 0x10 : 0x00),
0x34,
(address >> 24) & 0xFF,
(address >> 16) & 0xFF,
(address >> 8) & 0xFF,
(address ) & 0xFF,
(size >> 16) & 0xFF,
(size >> 8) & 0xFF,
(size ) & 0xFF};
unsigned char req_block[] = {0x36, 0x00};
unsigned char req_quit[] = {0x37};
unsigned char response[SZ_PACKET];
// Erase the current contents of the buffer.
if (!dc_buffer_clear (buffer)) {
ERROR (abstract->context, "Insufficient buffer space available.");
return DC_STATUS_NOMEMORY;
}
// Enable progress notifications.
dc_event_progress_t progress = EVENT_PROGRESS_INITIALIZER;
progress.maximum = 3 + size + 1;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
// Transfer the init request.
rc = shearwater_common_transfer (device, req_init, sizeof (req_init), response, 3, &n);
if (rc != DC_STATUS_SUCCESS) {
return rc;
}
// Verify the init response.
if (n != 3 || response[0] != 0x75 || response[1] != 0x10 || response[2] > SZ_PACKET) {
ERROR (abstract->context, "Unexpected response packet.");
return DC_STATUS_PROTOCOL;
}
// Update and emit a progress event.
progress.current += 3;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
unsigned int done = 0;
unsigned char block = 1;
unsigned int nbytes = 0;
while (nbytes < size && !done) {
// Transfer the block request.
req_block[1] = block;
rc = shearwater_common_transfer (device, req_block, sizeof (req_block), response, sizeof (response), &n);
if (rc != DC_STATUS_SUCCESS) {
return rc;
}
// Verify the block header.
if (n < 2 || response[0] != 0x76 || response[1] != block) {
ERROR (abstract->context, "Unexpected response packet.");
return DC_STATUS_PROTOCOL;
}
// Verify the block length.
unsigned int length = n - 2;
if (nbytes + length > size) {
ERROR (abstract->context, "Unexpected packet size.");
return DC_STATUS_PROTOCOL;
}
// Update and emit a progress event.
progress.current += length;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
if (compression) {
if (shearwater_common_decompress_lre (response + 2, length, buffer, &done) != 0) {
ERROR (abstract->context, "Decompression error (LRE phase).");
return DC_STATUS_PROTOCOL;
}
} else {
if (!dc_buffer_append (buffer, response + 2, length)) {
ERROR (abstract->context, "Insufficient buffer space available.");
return DC_STATUS_PROTOCOL;
}
}
nbytes += length;
block++;
}
if (compression) {
if (shearwater_common_decompress_xor (dc_buffer_get_data (buffer), dc_buffer_get_size (buffer)) != 0) {
ERROR (abstract->context, "Decompression error (XOR phase).");
return DC_STATUS_PROTOCOL;
}
}
// Transfer the quit request.
rc = shearwater_common_transfer (device, req_quit, sizeof (req_quit), response, 2, &n);
if (rc != DC_STATUS_SUCCESS) {
return rc;
}
// Verify the quit response.
if (n != 2 || response[0] != 0x77 || response[1] != 0x00) {
ERROR (abstract->context, "Unexpected response packet.");
return DC_STATUS_PROTOCOL;
}
// Update and emit a progress event.
progress.current += 1;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
return DC_STATUS_SUCCESS;
}
static dc_status_t
hw_ostc_device_dump (dc_device_t *abstract, dc_buffer_t *buffer)
{
hw_ostc_device_t *device = (hw_ostc_device_t*) abstract;
// Erase the current contents of the buffer.
if (!dc_buffer_clear (buffer)) {
ERROR (abstract->context, "Insufficient buffer space available.");
return DC_STATUS_NOMEMORY;
}
// Enable progress notifications.
dc_event_progress_t progress = EVENT_PROGRESS_INITIALIZER;
progress.maximum = SZ_HEADER + SZ_FW_NEW;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
// Send the command.
unsigned char command[1] = {'a'};
int rc = serial_write (device->port, command, sizeof (command));
if (rc != sizeof (command)) {
ERROR (abstract->context, "Failed to send the command.");
return EXITCODE (rc);
}
// Read the header.
unsigned char header[SZ_HEADER] = {0};
int n = serial_read (device->port, header, sizeof (header));
if (n != sizeof (header)) {
ERROR (abstract->context, "Failed to receive the header.");
return EXITCODE (n);
}
// Verify the header.
unsigned char preamble[] = {0xAA, 0xAA, 0xAA, 0xAA, 0xAA, 0x55};
if (memcmp (header, preamble, sizeof (preamble)) != 0) {
ERROR (abstract->context, "Unexpected answer header.");
return DC_STATUS_DATAFORMAT;
}
// Get the firmware version.
unsigned int firmware = array_uint16_be (header + 264);
// Get the amount of profile data.
unsigned int size = sizeof (header);
if (firmware > FW_190)
size += SZ_FW_NEW;
else
size += SZ_FW_190;
// Update and emit a progress event.
progress.current = sizeof (header);
progress.maximum = size;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
// Allocate the required amount of memory.
if (!dc_buffer_resize (buffer, size)) {
ERROR (abstract->context, "Insufficient buffer space available.");
return DC_STATUS_NOMEMORY;
}
unsigned char *data = dc_buffer_get_data (buffer);
// Copy the header to the output buffer.
memcpy (data, header, sizeof (header));
unsigned int nbytes = sizeof (header);
while (nbytes < size) {
// Set the minimum packet size.
unsigned int len = 1024;
// Increase the packet size if more data is immediately available.
int available = serial_get_received (device->port);
if (available > len)
len = available;
// Limit the packet size to the total size.
if (nbytes + len > size)
len = size - nbytes;
// Read the packet.
int n = serial_read (device->port, data + nbytes, len);
if (n != len) {
ERROR (abstract->context, "Failed to receive the answer.");
return EXITCODE (n);
}
// Update and emit a progress event.
progress.current += len;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
nbytes += len;
}
return DC_STATUS_SUCCESS;
}
static dc_status_t
cressi_leonardo_device_dump (dc_device_t *abstract, dc_buffer_t *buffer)
{
cressi_leonardo_device_t *device = (cressi_leonardo_device_t *) abstract;
// Erase the current contents of the buffer and
// pre-allocate the required amount of memory.
if (!dc_buffer_clear (buffer) || !dc_buffer_resize (buffer, SZ_MEMORY)) {
ERROR (abstract->context, "Insufficient buffer space available.");
return DC_STATUS_NOMEMORY;
}
// Enable progress notifications.
dc_event_progress_t progress = EVENT_PROGRESS_INITIALIZER;
progress.maximum = SZ_MEMORY;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
// Send the command header to the dive computer.
const unsigned char command[] = {0x7B, 0x31, 0x32, 0x33, 0x44, 0x42, 0x41, 0x7d};
int n = serial_write (device->port, command, sizeof (command));
if (n != sizeof (command)) {
ERROR (abstract->context, "Failed to send the command.");
return EXITCODE (n);
}
// Receive the header packet.
unsigned char header[7] = {0};
n = serial_read (device->port, header, sizeof (header));
if (n != sizeof (header)) {
ERROR (abstract->context, "Failed to receive the answer.");
return EXITCODE (n);
}
// Verify the header packet.
const unsigned char expected[] = {0x7B, 0x21, 0x44, 0x35, 0x42, 0x33, 0x7d};
if (memcmp (header, expected, sizeof (expected)) != 0) {
ERROR (abstract->context, "Unexpected answer byte.");
return DC_STATUS_PROTOCOL;
}
unsigned char *data = dc_buffer_get_data (buffer);
unsigned int nbytes = 0;
while (nbytes < SZ_MEMORY) {
// Set the minimum packet size.
unsigned int len = 1024;
// Increase the packet size if more data is immediately available.
int available = serial_get_received (device->port);
if (available > len)
len = available;
// Limit the packet size to the total size.
if (nbytes + len > SZ_MEMORY)
len = SZ_MEMORY - nbytes;
// Read the packet.
n = serial_read (device->port, data + nbytes, len);
if (n != len) {
ERROR (abstract->context, "Failed to receive the answer.");
return EXITCODE (n);
}
// Update and emit a progress event.
progress.current += len;
device_event_emit (abstract, DC_EVENT_PROGRESS, &progress);
nbytes += len;
}
// Receive the trailer packet.
unsigned char trailer[4] = {0};
n = serial_read (device->port, trailer, sizeof (trailer));
if (n != sizeof (trailer)) {
ERROR (abstract->context, "Failed to receive the answer.");
return EXITCODE (n);
}
// Convert to a binary checksum.
unsigned char checksum[2] = {0};
array_convert_hex2bin (trailer, sizeof (trailer), checksum, sizeof (checksum));
// Verify the checksum.
unsigned int csum1 = array_uint16_be (checksum);
unsigned int csum2 = checksum_crc_ccitt_uint16 (data, SZ_MEMORY);
if (csum1 != csum2) {
ERROR (abstract->context, "Unexpected answer bytes.");
return DC_STATUS_PROTOCOL;
}
return DC_STATUS_SUCCESS;
}