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Merge branch 'hwos-empty-profile'

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This commit is contained in:
Jef Driesen 2022-11-10 12:38:00 +01:00
commit 005a2501b9
2 changed files with 108 additions and 44 deletions
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145
src/hw_ostc3.c
View File

@ -89,6 +89,19 @@
#define NODELAY 0 #define NODELAY 0
#define TIMEOUT 400 #define TIMEOUT 400
#define HDR_COMPACT_LENGTH 0 // 3 bytes
#define HDR_COMPACT_SUMMARY 3 // 10 bytes
#define HDR_COMPACT_NUMBER 13 // 2 bytes
#define HDR_COMPACT_VERSION 15 // 1 byte
#define HDR_FULL_LENGTH 9 // 3 bytes
#define HDR_FULL_SUMMARY 12 // 10 bytes
#define HDR_FULL_NUMBER 80 // 2 bytes
#define HDR_FULL_VERSION 8 // 1 byte
#define HDR_FULL_POINTERS 2 // 6 bytes
#define HDR_FULL_FIRMWARE 48 // 2 bytes
typedef enum hw_ostc3_state_t { typedef enum hw_ostc3_state_t {
OPEN, OPEN,
DOWNLOAD, DOWNLOAD,
@ -116,6 +129,7 @@ typedef struct hw_ostc3_logbook_t {
unsigned int profile; unsigned int profile;
unsigned int fingerprint; unsigned int fingerprint;
unsigned int number; unsigned int number;
unsigned int version;
} hw_ostc3_logbook_t; } hw_ostc3_logbook_t;
typedef struct hw_ostc3_firmware_t { typedef struct hw_ostc3_firmware_t {
@ -155,16 +169,18 @@ static const dc_device_vtable_t hw_ostc3_device_vtable = {
static const hw_ostc3_logbook_t hw_ostc3_logbook_compact = { static const hw_ostc3_logbook_t hw_ostc3_logbook_compact = {
RB_LOGBOOK_SIZE_COMPACT, /* size */ RB_LOGBOOK_SIZE_COMPACT, /* size */
0, /* profile */ HDR_COMPACT_LENGTH, /* profile */
3, /* fingerprint */ HDR_COMPACT_SUMMARY, /* fingerprint */
13, /* number */ HDR_COMPACT_NUMBER, /* number */
HDR_COMPACT_VERSION, /* version */
}; };
static const hw_ostc3_logbook_t hw_ostc3_logbook_full = { static const hw_ostc3_logbook_t hw_ostc3_logbook_full = {
RB_LOGBOOK_SIZE_FULL, /* size */ RB_LOGBOOK_SIZE_FULL, /* size */
9, /* profile */ HDR_FULL_LENGTH, /* profile */
12, /* fingerprint */ HDR_FULL_SUMMARY, /* fingerprint */
80, /* number */ HDR_FULL_NUMBER, /* number */
HDR_FULL_VERSION, /* version */
}; };
@ -279,10 +295,15 @@ hw_ostc3_transfer (hw_ostc3_device_t *device,
unsigned int isize, unsigned int isize,
unsigned char output[], unsigned char output[],
unsigned int osize, unsigned int osize,
unsigned int *actual,
unsigned int delay) unsigned int delay)
{ {
dc_device_t *abstract = (dc_device_t *) device; dc_device_t *abstract = (dc_device_t *) device;
dc_status_t status = DC_STATUS_SUCCESS; dc_status_t status = DC_STATUS_SUCCESS;
unsigned int length = osize;
if (cmd == DIVE && length < RB_LOGBOOK_SIZE_FULL)
return DC_STATUS_INVALIDARGS;
if (device_is_cancelled (abstract)) if (device_is_cancelled (abstract))
return DC_STATUS_CANCELLED; return DC_STATUS_CANCELLED;
@ -345,11 +366,44 @@ hw_ostc3_transfer (hw_ostc3_device_t *device,
} }
if (output) { if (output) {
// Read the output data packet. if (cmd == DIVE) {
status = hw_ostc3_read (device, progress, output, osize); // Read the dive header.
if (status != DC_STATUS_SUCCESS) { status = hw_ostc3_read (device, progress, output, RB_LOGBOOK_SIZE_FULL);
ERROR (abstract->context, "Failed to receive the answer."); if (status != DC_STATUS_SUCCESS) {
return status; ERROR (abstract->context, "Failed to receive the dive header.");
return status;
}
// When the hwOS firmware detects the dive profile is no longer
// valid, it sends a modified dive header (with the begin/end
// pointer fields reset to zero, and the length field reduced to 8
// bytes), along with an empty dive profile. Detect this condition
// and adjust the expected length.
if (array_isequal (output + HDR_FULL_POINTERS, 6, 0x00) &&
array_uint24_le (output + HDR_FULL_LENGTH) == 8 &&
length > RB_LOGBOOK_SIZE_FULL + 5) {
length = RB_LOGBOOK_SIZE_FULL + 5;
}
// Read the dive profile.
status = hw_ostc3_read (device, progress, output + RB_LOGBOOK_SIZE_FULL, length - RB_LOGBOOK_SIZE_FULL);
if (status != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to receive the dive profile.");
return status;
}
// Update and emit a progress event.
if (progress && osize > length) {
progress->current += osize - length;
device_event_emit ((dc_device_t *) device, DC_EVENT_PROGRESS, progress);
}
} else {
// Read the output data packet.
status = hw_ostc3_read (device, progress, output, length);
if (status != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to receive the answer.");
return status;
}
} }
} }
@ -373,6 +427,9 @@ hw_ostc3_transfer (hw_ostc3_device_t *device,
} }
} }
if (actual)
*actual = length;
return DC_STATUS_SUCCESS; return DC_STATUS_SUCCESS;
} }
@ -445,9 +502,9 @@ hw_ostc3_device_id (hw_ostc3_device_t *device, unsigned char data[], unsigned in
// Send the command. // Send the command.
unsigned char hardware[SZ_HARDWARE2] = {0}; unsigned char hardware[SZ_HARDWARE2] = {0};
status = hw_ostc3_transfer (device, NULL, HARDWARE2, NULL, 0, hardware, SZ_HARDWARE2, NODELAY); status = hw_ostc3_transfer (device, NULL, HARDWARE2, NULL, 0, hardware, SZ_HARDWARE2, NULL, NODELAY);
if (status == DC_STATUS_UNSUPPORTED) { if (status == DC_STATUS_UNSUPPORTED) {
status = hw_ostc3_transfer (device, NULL, HARDWARE, NULL, 0, hardware + 1, SZ_HARDWARE, NODELAY); status = hw_ostc3_transfer (device, NULL, HARDWARE, NULL, 0, hardware + 1, SZ_HARDWARE, NULL, NODELAY);
} }
if (status != DC_STATUS_SUCCESS) if (status != DC_STATUS_SUCCESS)
return status; return status;
@ -469,7 +526,7 @@ hw_ostc3_device_init_download (hw_ostc3_device_t *device)
dc_context_t *context = (abstract ? abstract->context : NULL); dc_context_t *context = (abstract ? abstract->context : NULL);
// Send the init command. // Send the init command.
dc_status_t status = hw_ostc3_transfer (device, NULL, INIT, NULL, 0, NULL, 0, NODELAY); dc_status_t status = hw_ostc3_transfer (device, NULL, INIT, NULL, 0, NULL, 0, NULL, NODELAY);
if (status != DC_STATUS_SUCCESS) { if (status != DC_STATUS_SUCCESS) {
ERROR (context, "Failed to send the command."); ERROR (context, "Failed to send the command.");
return status; return status;
@ -562,7 +619,7 @@ hw_ostc3_device_init (hw_ostc3_device_t *device, hw_ostc3_state_t state)
// Read the version information. // Read the version information.
unsigned char version[SZ_VERSION] = {0}; unsigned char version[SZ_VERSION] = {0};
rc = hw_ostc3_transfer (device, NULL, IDENTITY, NULL, 0, version, sizeof(version), NODELAY); rc = hw_ostc3_transfer (device, NULL, IDENTITY, NULL, 0, version, sizeof(version), NULL, NODELAY);
if (rc != DC_STATUS_SUCCESS) { if (rc != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to read the version information."); ERROR (abstract->context, "Failed to read the version information.");
return rc; return rc;
@ -592,7 +649,7 @@ hw_ostc3_device_close (dc_device_t *abstract)
// Send the exit command // Send the exit command
if (device->state == DOWNLOAD || device->state == SERVICE) { if (device->state == DOWNLOAD || device->state == SERVICE) {
rc = hw_ostc3_transfer (device, NULL, EXIT, NULL, 0, NULL, 0, NODELAY); rc = hw_ostc3_transfer (device, NULL, EXIT, NULL, 0, NULL, 0, NULL, NODELAY);
if (rc != DC_STATUS_SUCCESS) { if (rc != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to send the command."); ERROR (abstract->context, "Failed to send the command.");
dc_status_set_error(&status, rc); dc_status_set_error(&status, rc);
@ -636,7 +693,7 @@ hw_ostc3_device_version (dc_device_t *abstract, unsigned char data[], unsigned i
return rc; return rc;
// Send the command. // Send the command.
rc = hw_ostc3_transfer (device, NULL, IDENTITY, NULL, 0, data, size, NODELAY); rc = hw_ostc3_transfer (device, NULL, IDENTITY, NULL, 0, data, size, NULL, NODELAY);
if (rc != DC_STATUS_SUCCESS) if (rc != DC_STATUS_SUCCESS)
return rc; return rc;
@ -709,11 +766,11 @@ hw_ostc3_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, voi
// This is slower, but also works for older firmware versions. // This is slower, but also works for older firmware versions.
unsigned int compact = 1; unsigned int compact = 1;
rc = hw_ostc3_transfer (device, &progress, COMPACT, rc = hw_ostc3_transfer (device, &progress, COMPACT,
NULL, 0, header, RB_LOGBOOK_SIZE_COMPACT * RB_LOGBOOK_COUNT, NODELAY); NULL, 0, header, RB_LOGBOOK_SIZE_COMPACT * RB_LOGBOOK_COUNT, NULL, NODELAY);
if (rc == DC_STATUS_UNSUPPORTED) { if (rc == DC_STATUS_UNSUPPORTED) {
compact = 0; compact = 0;
rc = hw_ostc3_transfer (device, &progress, HEADER, rc = hw_ostc3_transfer (device, &progress, HEADER,
NULL, 0, header, RB_LOGBOOK_SIZE_FULL * RB_LOGBOOK_COUNT, NODELAY); NULL, 0, header, RB_LOGBOOK_SIZE_FULL * RB_LOGBOOK_COUNT, NULL, NODELAY);
} }
if (rc != DC_STATUS_SUCCESS) { if (rc != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to read the header."); ERROR (abstract->context, "Failed to read the header.");
@ -769,8 +826,8 @@ hw_ostc3_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, voi
unsigned int length = RB_LOGBOOK_SIZE_FULL + array_uint24_le (header + offset + logbook->profile) - 3; unsigned int length = RB_LOGBOOK_SIZE_FULL + array_uint24_le (header + offset + logbook->profile) - 3;
if (!compact) { if (!compact) {
// Workaround for a bug in older firmware versions. // Workaround for a bug in older firmware versions.
unsigned int firmware = array_uint16_be (header + offset + 0x30); unsigned int firmware = array_uint16_be (header + offset + HDR_FULL_FIRMWARE);
if (firmware < 93) if (firmware < OSTC3FW(0,93))
length -= 3; length -= 3;
} }
if (length < RB_LOGBOOK_SIZE_FULL) { if (length < RB_LOGBOOK_SIZE_FULL) {
@ -817,15 +874,15 @@ hw_ostc3_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, voi
unsigned int length = RB_LOGBOOK_SIZE_FULL + array_uint24_le (header + offset + logbook->profile) - 3; unsigned int length = RB_LOGBOOK_SIZE_FULL + array_uint24_le (header + offset + logbook->profile) - 3;
if (!compact) { if (!compact) {
// Workaround for a bug in older firmware versions. // Workaround for a bug in older firmware versions.
unsigned int firmware = array_uint16_be (header + offset + 0x30); unsigned int firmware = array_uint16_be (header + offset + HDR_FULL_FIRMWARE);
if (firmware < 93) if (firmware < OSTC3FW(0,93))
length -= 3; length -= 3;
} }
// Download the dive. // Download the dive.
unsigned char number[1] = {idx}; unsigned char number[1] = {idx};
rc = hw_ostc3_transfer (device, &progress, DIVE, rc = hw_ostc3_transfer (device, &progress, DIVE,
number, sizeof (number), profile, length, NODELAY); number, sizeof (number), profile, length, &length, NODELAY);
if (rc != DC_STATUS_SUCCESS) { if (rc != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to read the dive."); ERROR (abstract->context, "Failed to read the dive.");
free (profile); free (profile);
@ -834,11 +891,15 @@ hw_ostc3_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, voi
} }
// Verify the header in the logbook and profile are identical. // Verify the header in the logbook and profile are identical.
if (!compact && memcmp (profile, header + offset, logbook->size) != 0) { if (memcmp (profile + HDR_FULL_VERSION, header + offset + logbook->version, 1) != 0 ||
compact ?
memcmp (profile + HDR_FULL_SUMMARY, header + offset + HDR_COMPACT_SUMMARY, 10) != 0 ||
memcmp (profile + HDR_FULL_NUMBER, header + offset + HDR_COMPACT_NUMBER, 2) != 0 :
memcmp (profile + HDR_FULL_SUMMARY, header + offset + HDR_FULL_SUMMARY, RB_LOGBOOK_SIZE_FULL - HDR_FULL_SUMMARY) != 0) {
ERROR (abstract->context, "Unexpected profile header."); ERROR (abstract->context, "Unexpected profile header.");
free (profile); free (profile);
free (header); free (header);
return rc; return DC_STATUS_DATAFORMAT;
} }
// Detect invalid profile data. // Detect invalid profile data.
@ -852,8 +913,8 @@ hw_ostc3_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, voi
} else if (length == RB_LOGBOOK_SIZE_FULL + 2) { } else if (length == RB_LOGBOOK_SIZE_FULL + 2) {
// A profile containing only the 2 byte end-of-profile // A profile containing only the 2 byte end-of-profile
// marker is considered a valid empty profile. // marker is considered a valid empty profile.
} else if (length < RB_LOGBOOK_SIZE_FULL + 5 + 2 || } else if (length < RB_LOGBOOK_SIZE_FULL + 5 ||
array_uint24_le (profile + RB_LOGBOOK_SIZE_FULL) + delta != array_uint24_le (profile + 9)) { array_uint24_le (profile + RB_LOGBOOK_SIZE_FULL) + delta != array_uint24_le (profile + HDR_FULL_LENGTH)) {
// If there is more data available, then there should be a // If there is more data available, then there should be a
// valid profile header containing a length matching the // valid profile header containing a length matching the
// length in the dive header. // length in the dive header.
@ -861,7 +922,7 @@ hw_ostc3_device_foreach (dc_device_t *abstract, dc_dive_callback_t callback, voi
length = RB_LOGBOOK_SIZE_FULL; length = RB_LOGBOOK_SIZE_FULL;
} }
if (callback && !callback (profile, length, profile + 12, sizeof (device->fingerprint), userdata)) if (callback && !callback (profile, length, profile + HDR_FULL_SUMMARY, sizeof (device->fingerprint), userdata))
break; break;
} }
@ -890,7 +951,7 @@ hw_ostc3_device_timesync (dc_device_t *abstract, const dc_datetime_t *datetime)
unsigned char packet[6] = { unsigned char packet[6] = {
datetime->hour, datetime->minute, datetime->second, datetime->hour, datetime->minute, datetime->second,
datetime->month, datetime->day, datetime->year - 2000}; datetime->month, datetime->day, datetime->year - 2000};
rc = hw_ostc3_transfer (device, NULL, CLOCK, packet, sizeof (packet), NULL, 0, NODELAY); rc = hw_ostc3_transfer (device, NULL, CLOCK, packet, sizeof (packet), NULL, 0, NULL, NODELAY);
if (rc != DC_STATUS_SUCCESS) if (rc != DC_STATUS_SUCCESS)
return rc; return rc;
@ -918,7 +979,7 @@ hw_ostc3_device_display (dc_device_t *abstract, const char *text)
return rc; return rc;
// Send the command. // Send the command.
rc = hw_ostc3_transfer (device, NULL, DISPLAY, packet, sizeof (packet), NULL, 0, NODELAY); rc = hw_ostc3_transfer (device, NULL, DISPLAY, packet, sizeof (packet), NULL, 0, NULL, NODELAY);
if (rc != DC_STATUS_SUCCESS) if (rc != DC_STATUS_SUCCESS)
return rc; return rc;
@ -946,7 +1007,7 @@ hw_ostc3_device_customtext (dc_device_t *abstract, const char *text)
return rc; return rc;
// Send the command. // Send the command.
rc = hw_ostc3_transfer (device, NULL, CUSTOMTEXT, packet, sizeof (packet), NULL, 0, NODELAY); rc = hw_ostc3_transfer (device, NULL, CUSTOMTEXT, packet, sizeof (packet), NULL, 0, NULL, NODELAY);
if (rc != DC_STATUS_SUCCESS) if (rc != DC_STATUS_SUCCESS)
return rc; return rc;
@ -972,7 +1033,7 @@ hw_ostc3_device_config_read (dc_device_t *abstract, unsigned int config, unsigne
// Send the command. // Send the command.
unsigned char command[1] = {config}; unsigned char command[1] = {config};
rc = hw_ostc3_transfer (device, NULL, READ, command, sizeof (command), data, size, NODELAY); rc = hw_ostc3_transfer (device, NULL, READ, command, sizeof (command), data, size, NULL, NODELAY);
if (rc != DC_STATUS_SUCCESS) if (rc != DC_STATUS_SUCCESS)
return rc; return rc;
@ -999,7 +1060,7 @@ hw_ostc3_device_config_write (dc_device_t *abstract, unsigned int config, const
// Send the command. // Send the command.
unsigned char command[SZ_CONFIG + 1] = {config}; unsigned char command[SZ_CONFIG + 1] = {config};
memcpy(command + 1, data, size); memcpy(command + 1, data, size);
rc = hw_ostc3_transfer (device, NULL, WRITE, command, size + 1, NULL, 0, NODELAY); rc = hw_ostc3_transfer (device, NULL, WRITE, command, size + 1, NULL, 0, NULL, NODELAY);
if (rc != DC_STATUS_SUCCESS) if (rc != DC_STATUS_SUCCESS)
return rc; return rc;
@ -1019,7 +1080,7 @@ hw_ostc3_device_config_reset (dc_device_t *abstract)
return rc; return rc;
// Send the command. // Send the command.
rc = hw_ostc3_transfer (device, NULL, RESET, NULL, 0, NULL, 0, NODELAY); rc = hw_ostc3_transfer (device, NULL, RESET, NULL, 0, NULL, 0, NULL, NODELAY);
if (rc != DC_STATUS_SUCCESS) if (rc != DC_STATUS_SUCCESS)
return rc; return rc;
@ -1245,7 +1306,7 @@ hw_ostc3_firmware_erase (hw_ostc3_device_t *device, unsigned int addr, unsigned
array_uint24_be_set (buffer, addr); array_uint24_be_set (buffer, addr);
buffer[3] = blocks; buffer[3] = blocks;
return hw_ostc3_transfer (device, NULL, S_ERASE, buffer, sizeof (buffer), NULL, 0, delay); return hw_ostc3_transfer (device, NULL, S_ERASE, buffer, sizeof (buffer), NULL, 0, NULL, delay);
} }
static dc_status_t static dc_status_t
@ -1255,7 +1316,7 @@ hw_ostc3_firmware_block_read (hw_ostc3_device_t *device, unsigned int addr, unsi
array_uint24_be_set (buffer, addr); array_uint24_be_set (buffer, addr);
array_uint24_be_set (buffer + 3, block_size); array_uint24_be_set (buffer + 3, block_size);
return hw_ostc3_transfer (device, NULL, S_BLOCK_READ, buffer, sizeof (buffer), block, block_size, NODELAY); return hw_ostc3_transfer (device, NULL, S_BLOCK_READ, buffer, sizeof (buffer), block, block_size, NULL, NODELAY);
} }
static dc_status_t static dc_status_t
@ -1270,7 +1331,7 @@ hw_ostc3_firmware_block_write1 (hw_ostc3_device_t *device, unsigned int addr, co
array_uint24_be_set (buffer, addr); array_uint24_be_set (buffer, addr);
memcpy (buffer + 3, block, block_size); memcpy (buffer + 3, block, block_size);
return hw_ostc3_transfer (device, NULL, S_BLOCK_WRITE, buffer, 3 + block_size, NULL, 0, TIMEOUT); return hw_ostc3_transfer (device, NULL, S_BLOCK_WRITE, buffer, 3 + block_size, NULL, 0, NULL, TIMEOUT);
} }
static dc_status_t static dc_status_t
@ -1289,7 +1350,7 @@ hw_ostc3_firmware_block_write2 (hw_ostc3_device_t *device, unsigned int address,
array_uint24_be_set (buffer, address); array_uint24_be_set (buffer, address);
memcpy (buffer + 3, data + nbytes, SZ_FIRMWARE_BLOCK2); memcpy (buffer + 3, data + nbytes, SZ_FIRMWARE_BLOCK2);
status = hw_ostc3_transfer (device, NULL, S_BLOCK_WRITE2, buffer, sizeof(buffer), NULL, 0, NODELAY); status = hw_ostc3_transfer (device, NULL, S_BLOCK_WRITE2, buffer, sizeof(buffer), NULL, 0, NULL, NODELAY);
if (status != DC_STATUS_SUCCESS) { if (status != DC_STATUS_SUCCESS) {
return status; return status;
} }
@ -1330,7 +1391,7 @@ hw_ostc3_firmware_upgrade (dc_device_t *abstract, unsigned int checksum)
buffer[4] = (buffer[4]<<1 | buffer[4]>>7); buffer[4] = (buffer[4]<<1 | buffer[4]>>7);
} }
rc = hw_ostc3_transfer (device, NULL, S_UPGRADE, buffer, sizeof (buffer), NULL, 0, NODELAY); rc = hw_ostc3_transfer (device, NULL, S_UPGRADE, buffer, sizeof (buffer), NULL, 0, NULL, NODELAY);
if (rc != DC_STATUS_SUCCESS) { if (rc != DC_STATUS_SUCCESS) {
ERROR (context, "Failed to send flash firmware command"); ERROR (context, "Failed to send flash firmware command");
return rc; return rc;
@ -1512,7 +1573,7 @@ hw_ostc3_device_fwupdate4 (dc_device_t *abstract, const char *filename)
// Read the firmware version info. // Read the firmware version info.
unsigned char fwinfo[SZ_FWINFO] = {0}; unsigned char fwinfo[SZ_FWINFO] = {0};
status = hw_ostc3_transfer (device, NULL, S_FWINFO, status = hw_ostc3_transfer (device, NULL, S_FWINFO,
data + offset + 4, 1, fwinfo, sizeof(fwinfo), NODELAY); data + offset + 4, 1, fwinfo, sizeof(fwinfo), NULL, NODELAY);
if (status != DC_STATUS_SUCCESS) { if (status != DC_STATUS_SUCCESS) {
ERROR (abstract->context, "Failed to read the firmware info."); ERROR (abstract->context, "Failed to read the firmware info.");
goto error; goto error;
@ -1525,7 +1586,7 @@ hw_ostc3_device_fwupdate4 (dc_device_t *abstract, const char *filename)
!array_isequal(fwinfo, sizeof(fwinfo), 0xFF)) !array_isequal(fwinfo, sizeof(fwinfo), 0xFF))
{ {
status = hw_ostc3_transfer (device, &progress, S_UPLOAD, status = hw_ostc3_transfer (device, &progress, S_UPLOAD,
data + offset, length, NULL, 0, usecs / 1000); data + offset, length, NULL, 0, NULL, usecs / 1000);
if (status != DC_STATUS_SUCCESS) { if (status != DC_STATUS_SUCCESS) {
goto error; goto error;
} }

7
src/hw_ostc_parser.c
View File

@ -20,6 +20,7 @@
*/ */
#include <stdlib.h> #include <stdlib.h>
#include <string.h>
#include "libdivecomputer/units.h" #include "libdivecomputer/units.h"
@ -679,8 +680,10 @@ hw_ostc_parser_samples_foreach (dc_parser_t *abstract, dc_sample_callback_t call
const hw_ostc_layout_t *layout = parser->layout; const hw_ostc_layout_t *layout = parser->layout;
// Exit if no profile data available. // Exit if no profile data available.
if (size == header || (size == header + 2 && const unsigned char empty[] = {0x08, 0x00, 0x00, 0xFD, 0xFD};
data[header] == 0xFD && data[header + 1] == 0xFD)) { if (size == header ||
(size == header + 2 && memcmp(data + header, empty + 3, 2) == 0) ||
(size == header + 5 && memcmp(data + header, empty, 5) == 0)) {
parser->cached = PROFILE; parser->cached = PROFILE;
return DC_STATUS_SUCCESS; return DC_STATUS_SUCCESS;
} }