hfp: fix answer call command

CHANGELOG.md

@@ -14,8 +14,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - att_db_util: added security requirement arguments to characteristic creators
 
 ### Fixed
-- hci: fix buffer overrun in gap_inquiry_explode
-- sdp: free service record item on sdp_unregister_service
+- HFP: fix answer call command
+- HCI: fix buffer overrun in gap_inquiry_explode
+- SDP: free service record item on sdp_unregister_service
 
 ## Changes March 2018
 

src/classic/hfp.c

@@ -798,7 +798,7 @@ static hfp_command_t parse_command(const char * line_buffer, int isHandsFree){
         return HFP_CMD_TURN_OFF_EC_AND_NR;
     }
 
-    if (strncmp(line_buffer, HFP_CALL_ANSWERED, strlen(HFP_CALL_ANSWERED)) == 0){
+    if (strncmp(line_buffer, HFP_ANSWER_CALL, strlen(HFP_ANSWER_CALL)) == 0){
         return HFP_CMD_CALL_ANSWERED;
     }
 

src/classic/hfp.h

@@ -131,7 +131,7 @@ extern "C" {
 #define HFP_EXTENDED_AUDIO_GATEWAY_ERROR "+CME ERROR"
 #define HFP_TRIGGER_CODEC_CONNECTION_SETUP "+BCC"
 #define HFP_CONFIRM_COMMON_CODEC "+BCS"
-#define HFP_CALL_ANSWERED "ATA"
+#define HFP_ANSWER_CALL "A"
 #define HFP_HANG_UP_CALL "+CHUP"
 #define HFP_CHANGE_IN_BAND_RING_TONE_SETTING "+BSIR"
 #define HFP_CALL_PHONE_NUMBER "ATD"

src/classic/hfp_hf.c

@@ -303,7 +303,7 @@ static int hfp_hf_cmd_trigger_codec_connection_setup(uint16_t cid){
 }
 
 static int hfp_hf_cmd_ata(uint16_t cid){
-    return hfp_hf_send_cmd(cid, HFP_CALL_ANSWERED);
+    return hfp_hf_send_cmd(cid, HFP_ANSWER_CALL);
 }
 
 static int hfp_hf_set_microphone_gain_cmd(uint16_t cid, int gain){