output/csv: use intermediate time_t var, silence compiler warning

[libsigrok.git] / src / serial_hid.c

diff --git a/src/serial_hid.c b/src/serial_hid.c
index ac9afaca6f46ba8c58c2a5c17b02154766d9833b..759a58c487499aeb5f82d18c5ef779166dfc7610 100644 (file)
--- a/src/serial_hid.c
+++ b/src/serial_hid.c
@@ -181,9 +181,10 @@ static char *extract_hidapi_path(const char *copy)
 }
 
 /*
- * The HIDAPI specific list() callback, invoked by common serial.c code.
- * Enumerate all devices (no VID:PID is involved).
- * Invoke an 'append' callback with "path" and "name".
+ * Enumerate all devices (no VID:PID is involved). Invoke an 'append'
+ * callback with "path" and "name". Exclusively list connections that
+ * involve supported chip types, because mice and keyboards etc are not
+ * too useful to communicate to measurement equipment.
  */
 static GSList *ser_hid_hidapi_list(GSList *list, sr_ser_list_append_t append)
 {
@@ -197,14 +198,14 @@ static GSList *ser_hid_hidapi_list(GSList *list, sr_ser_list_append_t append)
        devs = hid_enumerate(0x0000, 0x0000);
        for (curdev = devs; curdev; curdev = curdev->next) {
                /*
-                * Determine the chip name from VID:PID (if it's one of
-                * the supported types with an ID known to us).
+                * Determine the chip name from VID:PID. Exlusively list
+                * supported connection types (known chips).
                 */
                vid = curdev->vendor_id;
                pid = curdev->product_id;
                chipname = ser_hid_chip_find_name_vid_pid(vid, pid);
                if (!chipname)
-                       chipname = "<chip>";
+                       continue;
 
                /*
                 * Prefix port names such that open() calls with this
@@ -250,19 +251,36 @@ static GSList *ser_hid_hidapi_list(GSList *list, sr_ser_list_append_t append)
 }
 
 /*
- * The HIDAPI specific find_usb() callback, invoked by common serial.c code.
- * Enumerate devices for the specified VID:PID pair.
- * Invoke an "append" callback with 'path' for the device.
+ * Enumerate devices for the specified VID:PID pair. Invoke an "append"
+ * callback with 'path' for found devices. Exclusively finds supported
+ * chip types, skips unknown VID:PID pairs (even if caller specified).
  */
 static GSList *ser_hid_hidapi_find_usb(GSList *list, sr_ser_find_append_t append,
                uint16_t vendor_id, uint16_t product_id)
 {
+       const char *caller_chip;
+       const char *dev_chip;
        struct hid_device_info *devs, *curdev;
        const char *name;
+       char *path;
+
+       caller_chip = ser_hid_chip_find_name_vid_pid(vendor_id, product_id);
 
        devs = hid_enumerate(vendor_id, product_id);
        for (curdev = devs; curdev; curdev = curdev->next) {
-               name = curdev->path;
+               dev_chip = caller_chip;
+               if (!dev_chip) {
+                       dev_chip = ser_hid_chip_find_name_vid_pid(
+                               curdev->vendor_id, curdev->product_id);
+               }
+               if (!dev_chip)
+                       continue;
+               path = get_hidapi_path_copy(curdev->path);
+               if (!path)
+                       continue;
+               name = g_strdup_printf("%s/%s/%s",
+                       SER_HID_CONN_PREFIX, dev_chip, path);
+               g_free(path);
                list = append(list, name);
        }
        hid_free_enumeration(devs);