tester: bas: Add support for testing Battery Service

Currently only support mandatory Battery Level and optional Level Status
Characteristic.

Signed-off-by: Michele Imbriani <[email protected]>

Author: MicImbriani

tests/bluetooth/tester/CMakeLists.txt

@@ -33,5 +33,9 @@ if(CONFIG_BT_OTS)
     target_sources(app PRIVATE src/btp_ots.c)
 endif()
 
+if(CONFIG_BT_BAS)
+    target_sources(app PRIVATE src/btp_bas.c)
+endif()
+
 zephyr_library_include_directories(src src/btp src/audio/btp)
 add_subdirectory_ifdef(CONFIG_BT_AUDIO src/audio)

tests/bluetooth/tester/prj.conf

@@ -66,3 +66,9 @@ CONFIG_BT_BUF_EVT_RX_SIZE=255
 CONFIG_BT_BUF_CMD_TX_SIZE=255
 CONFIG_BT_BUF_ACL_TX_SIZE=251
 CONFIG_BT_BUF_ACL_RX_SIZE=255
+
+CONFIG_BT_BAS=y
+CONFIG_BT_BAS_BLS=y
+CONFIG_BT_BAS_BLS_IDENTIFIER_PRESENT=y
+CONFIG_BT_BAS_BLS_BATTERY_LEVEL_PRESENT=y
+CONFIG_BT_BAS_BLS_ADDITIONAL_STATUS_PRESENT=y

tests/bluetooth/tester/src/btp/btp.h

@@ -39,6 +39,7 @@
 #include "btp_tmap.h"
 #include "btp_ots.h"
 #include "btp_pbp.h"
+#include "btp_bas.h"
 
 #define BTP_MTU 1024
 #define BTP_DATA_MAX_SIZE (BTP_MTU - sizeof(struct btp_hdr))
@@ -77,8 +78,9 @@
 #define BTP_SERVICE_ID_TMAP     0x1c
 #define BTP_SERVICE_ID_OTS      0x1d
 #define BTP_SERVICE_ID_PBP      0x1e
+#define BTP_SERVICE_ID_BAS      0x1f
 
-#define BTP_SERVICE_ID_MAX	BTP_SERVICE_ID_PBP
+#define BTP_SERVICE_ID_MAX	BTP_SERVICE_ID_BAS
 
 #define BTP_STATUS_SUCCESS	0x00
 #define BTP_STATUS_FAILED	0x01

tests/bluetooth/tester/src/btp/btp_bas.h

@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2024 Demant A/S
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef BTP_BAS_H_
+#define BTP_BAS_H_
+
+#include <stdint.h>
+#include <stddef.h>
+
+/* BTP BAS Service Opcodes */
+#define BTP_BAS_READ_SUPPORTED_COMMANDS       0x01
+#define BTP_BAS_SET_BATTERY_LEVEL             0x02
+#define BTP_BAS_BLS_SET_BATTERY_PRESENT       0x03
+#define BTP_BAS_BLS_SET_WIRED_POWER_SOURCE    0x04
+#define BTP_BAS_BLS_SET_WIRELESS_POWER_SOURCE 0x05
+#define BTP_BAS_BLS_SET_BATTERY_CHARGE_STATE  0x06
+#define BTP_BAS_BLS_SET_BATTERY_CHARGE_LEVEL  0x07
+#define BTP_BAS_BLS_SET_BATTERY_CHARGE_TYPE   0x08
+#define BTP_BAS_BLS_SET_CHARGING_FAULT_REASON 0x09
+#define BTP_BAS_BLS_SET_IDENTIFIER            0x0A
+#define BTP_BAS_BLS_SET_SERVICE_REQUIRED      0x0B
+#define BTP_BAS_BLS_SET_BATTERY_FAULT         0x0C
+
+/* Command structures */
+struct btp_bas_read_supported_commands_rp {
+	uint8_t data[0];
+} __packed;
+
+struct btp_bas_set_battery_level_cmd {
+	uint8_t level;
+} __packed;
+
+struct btp_bas_bls_set_battery_present_cmd {
+	uint8_t present;
+} __packed;
+
+struct btp_bas_bls_set_wired_power_source_cmd {
+	uint8_t source;
+} __packed;
+
+struct btp_bas_bls_set_wireless_power_source_cmd {
+	uint8_t source;
+} __packed;
+
+struct btp_bas_bls_set_battery_charge_state_cmd {
+	uint8_t state;
+} __packed;
+
+struct btp_bas_bls_set_battery_charge_level_cmd {
+	uint8_t level;
+} __packed;
+
+struct btp_bas_bls_set_battery_charge_type_cmd {
+	uint8_t type;
+} __packed;
+
+struct btp_bas_bls_set_charging_fault_reason_cmd {
+	uint8_t reason;
+} __packed;
+
+struct btp_bas_bls_set_identifier_cmd {
+	uint16_t identifier;
+} __packed;
+
+struct btp_bas_bls_set_service_required_cmd {
+	uint8_t service_required;
+} __packed;
+
+struct btp_bas_bls_set_battery_fault_cmd {
+	uint8_t battery_fault;
+} __packed;
+
+/**
+ * @brief Initialize the Battery Service (BAS) tester.
+ *
+ * @return Status of the initialization. Returns `BTP_STATUS_SUCCESS`
+ *         if the initialization is successful. Other values indicate failure.
+ */
+uint8_t tester_init_bas(void);
+
+/**
+ * @brief Unregister the Battery Service (BAS) tester.
+ *
+ * @return Status of the unregistration. Returns `BTP_STATUS_SUCCESS`
+ *         if the unregistration is successful. Other values indicate failure.
+ */
+uint8_t tester_unregister_bas(void);
+
+#endif /* BTP_BAS_H_ */