It is possible that some characteristics use the Notify as well as Indicate property.
In this case the CCC value is 3 and BlueZ returns BT_ERROR_CCC_IMPROPERLY_CONFIGURED.
This should be the behavior for values > 3.
---
src/gatt-database.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/gatt-database.c b/src/gatt-database.c
index be6dfb265..8e16c1d79 100644
--- a/src/gatt-database.c
+++ b/src/gatt-database.c
@@ -2648,9 +2648,9 @@ static uint8_t ccc_write_cb(struct pending_op *op, void *user_data)
return BT_ATT_ERROR_INSUFFICIENT_RESOURCES;
/* Don't support undefined CCC values yet */
- if (value > 2 ||
- (value == 1 && !(chrc->props & BT_GATT_CHRC_PROP_NOTIFY)) ||
- (value == 2 && !(chrc->props & BT_GATT_CHRC_PROP_INDICATE)))
+ if (value > 3 ||
+ (value & 0x1 && !(chrc->props & BT_GATT_CHRC_PROP_NOTIFY)) ||
+ (value & 0x2 && !(chrc->props & BT_GATT_CHRC_PROP_INDICATE)))
return BT_ERROR_CCC_IMPROPERLY_CONFIGURED;
if (chrc->notify_io) {
--
2.31.0
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