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Merge pull request #59 from mikeller/fix_shearwater_sensor_calibration

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Michael Keller 2024-05-08 12:28:54 +12:00 committed by GitHub
commit 6bd1183c34
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2 changed files with 24 additions and 32 deletions
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7
src/shearwater_common.c
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@ -58,8 +58,8 @@ shearwater_common_setup (shearwater_common_device_t *device, dc_context_t *conte
return status;
}
// Set the timeout for receiving data (3000ms).
status = dc_iostream_set_timeout (device->iostream, 3000);
// Set the timeout for receiving data (12s).
status = dc_iostream_set_timeout (device->iostream, 12 * 1000);
if (status != DC_STATUS_SUCCESS) {
ERROR (context, "Failed to set the timeout.");
return status;
@ -696,6 +696,9 @@ dc_status_t shearwater_common_get_model(shearwater_common_device_t *device, unsi
// Convert and map to the model number.
unsigned int hardware = array_uint16_be (rsp_hardware);
DEBUG(device->base.context, "Hardware type: 0x%04x", hardware);
switch (hardware) {
case 0x0101:
case 0x0202:

49
src/shearwater_predator_parser.c
View File

@ -418,7 +418,6 @@ shearwater_predator_parser_cache (shearwater_predator_parser_t *parser)
dc_parser_t *abstract = (dc_parser_t *) parser;
const unsigned char *data = parser->base.data;
unsigned int size = parser->base.size;
const char *ppo2_source = NULL;
if (parser->cached) {
return DC_STATUS_SUCCESS;
@ -728,38 +727,30 @@ shearwater_predator_parser_cache (shearwater_predator_parser_t *parser)
dc_field_add_string_fmt(&parser->cache, "Logversion", "%d%s", logversion, pnf ? "(PNF)" : "");
// Cache sensor calibration for later use
unsigned int nsensors = 0, ndefaults = 0;
unsigned int base = parser->opening[3] + (pnf ? 6 : 86);
parser->calibrated = data[base];
for (size_t i = 0; i < 3; ++i) {
unsigned int calibration = array_uint16_be(data + base + 1 + i * 2);
parser->calibration[i] = calibration / 100000.0;
if (parser->model == PREDATOR) {
// The Predator expects the mV output of the cells to be
// within 30mV to 70mV in 100% O2 at 1 atmosphere. If the
// calibration value is scaled with a factor 2.2, then the
// sensors lines up and matches the average.
parser->calibration[i] *= 2.2;
}
if (data[base] & (1 << i)) {
if (calibration == 2100) {
ndefaults++;
if (parser->calibrated & (1 << i)) {
unsigned int calibration = array_uint16_be(data + base + 1 + i * 2);
parser->calibration[i] = calibration / 100000.0;
if (parser->model == PREDATOR) {
// The Predator expects the mV output of the cells to be
// within 30mV to 70mV in 100% O2 at 1 atmosphere. If the
// calibration value is scaled with a factor 2.2, then the
// sensors lines up and matches the average.
parser->calibration[i] *= 2.2;
}
nsensors++;
static const char *name[] = {
"Sensor 1 calibration [bar / V]",
"Sensor 2 calibration [bar / V]",
"Sensor 3 calibration [bar / V]",
};
dc_field_add_string_fmt(&parser->cache, name[i], "%.2f", parser->calibration[i] * 1000);
}
}
if (nsensors && nsensors == ndefaults) {
// If all (calibrated) sensors still have their factory default
// calibration values (2100), they are probably not calibrated
// properly. To avoid returning incorrect ppO2 values to the
// application, they are manually disabled (e.g. marked as
// uncalibrated).
WARNING (abstract->context, "Disabled all O2 sensors due to a default calibration value.");
parser->calibrated = 0;
ppo2_source = "voted/averaged";
} else {
parser->calibrated = data[base];
ppo2_source = "cells";
}
// Get the dive mode from the header (if available).
if (logversion >= 8) {
@ -830,8 +821,6 @@ shearwater_predator_parser_cache (shearwater_predator_parser_t *parser)
case M_CC:
case M_CC2:
DC_ASSIGN_FIELD(parser->cache, DIVEMODE, DC_DIVEMODE_CCR);
if (ppo2_source)
dc_field_add_string(&parser->cache, "PPO2 source", ppo2_source);
break;
case M_SC:
DC_ASSIGN_FIELD(parser->cache, DIVEMODE, DC_DIVEMODE_SCR);