Add function for reading the transmit power level

2 files changed, 31 insertions, 0 deletions

diff --git a/include/hci_lib.h b/include/hci_lib.h
index 7e6acfaf..3c44bd8a 100644
--- a/include/hci_lib.h
+++ b/include/hci_lib.h
@@ -89,6 +89,7 @@ int hci_read_inquiry_mode(int dd, uint8_t *mode, int to);
 int hci_write_inquiry_mode(int dd, uint8_t mode, int to);
 int hci_read_afh_mode(int dd, uint8_t *mode, int to);
 int hci_write_afh_mode(int dd, uint8_t mode, int to);
+int hci_read_transmit_power_level(int dd, uint16_t handle, uint8_t type, uint8_t *level, int to);
 int hci_read_link_supervision_timeout(int dd, uint16_t handle, uint16_t *timeout, int to);
 int hci_write_link_supervision_timeout(int dd, uint16_t handle, uint16_t timeout, int to);
 int hci_set_afh_classification(int dd, uint8_t *map, int to);
diff --git a/src/hci.c b/src/hci.c
index ca53105e..8e0b7938 100644
--- a/src/hci.c
+++ b/src/hci.c
@@ -1432,6 +1432,36 @@ int hci_write_afh_mode(int dd, uint8_t mode, int to)
 	return 0;
 }
 
+int hci_read_transmit_power_level(int dd, uint16_t handle, uint8_t type, uint8_t *level, int to)
+{
+	read_transmit_power_level_cp cp;
+	read_transmit_power_level_rp rp;
+	struct hci_request rq;
+
+	memset(&cp, 0, sizeof(cp));
+	cp.handle = handle;
+	cp.type   = type;
+
+	memset(&rq, 0, sizeof(rq));
+	rq.ogf    = OGF_HOST_CTL;
+	rq.ocf    = OCF_READ_TRANSMIT_POWER_LEVEL;
+	rq.cparam = &cp;
+	rq.clen   = READ_TRANSMIT_POWER_LEVEL_CP_SIZE;
+	rq.rparam = &rp;
+	rq.rlen   = READ_TRANSMIT_POWER_LEVEL_RP_SIZE;
+
+	if (hci_send_req(dd, &rq, to) < 0)
+		return -1;
+
+	if (rp.status) {
+		errno = EIO;
+		return -1;
+	}
+
+	*level = rp.level;
+	return 0;
+}
+
 int hci_read_link_supervision_timeout(int dd, uint16_t handle, uint16_t *timeout, int to)
 {
 	read_link_supervision_timeout_rp rp;