FlapJackApps/libdivecomputer
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Use the userdata parameter to pass the device data back to the caller.

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This commit is contained in:
Jef Driesen 2010-02-16 14:57:37 +00:00
parent ff55a4a82d
commit ba1bd5d688
1 changed files with 15 additions and 1 deletions
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16
examples/universal.c
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@ -37,6 +37,12 @@
#include <cressi.h>
#include <utils.h>
typedef struct device_data_t {
device_type_t backend;
device_devinfo_t devinfo;
device_clock_t clock;
} device_data_t;
typedef struct dive_data_t {
unsigned int number;
} dive_data_t;
@ -153,6 +159,8 @@ event_cb (device_t *device, device_event_t event, const void *data, void *userda
const device_devinfo_t *devinfo = (device_devinfo_t *) data;
const device_clock_t *clock = (device_clock_t *) data;
device_data_t *devdata = (device_data_t *) userdata;
switch (event) {
case DEVICE_EVENT_WAITING:
message ("Event: waiting for user action\n");
@ -163,12 +171,14 @@ event_cb (device_t *device, device_event_t event, const void *data, void *userda
progress->current, progress->maximum);
break;
case DEVICE_EVENT_DEVINFO:
devdata->devinfo = *devinfo;
message ("Event: model=%u (0x%08x), firmware=%u (0x%08x), serial=%u (0x%08x)\n",
devinfo->model, devinfo->model,
devinfo->firmware, devinfo->firmware,
devinfo->serial, devinfo->serial);
break;
case DEVICE_EVENT_CLOCK:
devdata->clock = *clock;
message ("Event: systime=%u, devtime=%u\n",
clock->systime, clock->devtime);
break;
@ -256,6 +266,10 @@ dowork (device_type_t backend, const char *devname, const char *filename, int me
{
device_status_t rc = DEVICE_STATUS_SUCCESS;
// Initialize the device data.
device_data_t devdata = {0};
devdata.backend = backend;
// Open the device.
message ("Opening the device (%s, %s).\n",
lookup_name (backend), devname ? devname : "null");
@ -327,7 +341,7 @@ dowork (device_type_t backend, const char *devname, const char *filename, int me
// Register the event handler.
message ("Registering the event handler.\n");
int events = DEVICE_EVENT_WAITING | DEVICE_EVENT_PROGRESS | DEVICE_EVENT_DEVINFO | DEVICE_EVENT_CLOCK;
rc = device_set_events (device, events, event_cb, NULL);
rc = device_set_events (device, events, event_cb, &devdata);
if (rc != DEVICE_STATUS_SUCCESS) {
WARNING ("Error registering the event handler.");
device_close (device);