diff options
Diffstat (limited to 'extmod/btstack/modbluetooth_btstack.c')
| -rw-r--r-- | extmod/btstack/modbluetooth_btstack.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/extmod/btstack/modbluetooth_btstack.c b/extmod/btstack/modbluetooth_btstack.c index f0b6187a25..772fe4bed1 100644 --- a/extmod/btstack/modbluetooth_btstack.c +++ b/extmod/btstack/modbluetooth_btstack.c @@ -37,10 +37,20 @@ #define DEBUG_EVENT_printf(...) //printf(__VA_ARGS__) +#ifndef MICROPY_PY_BLUETOOTH_DEFAULT_GAP_NAME +#define MICROPY_PY_BLUETOOTH_DEFAULT_GAP_NAME "MPY BTSTACK" +#endif + // How long to wait for a controller to init/deinit. // Some controllers can take up to 5-6 seconds in normal operation. STATIC const uint32_t BTSTACK_INIT_DEINIT_TIMEOUT_MS = 15000; +// We need to know the attribute handle for the GAP device name (see GAP_DEVICE_NAME_UUID) +// so it can be put into the gatts_db before registering the services, and accessed +// efficiently when requesting an attribute in att_read_callback. Because this is the +// first characteristic of the first service, it always has a handle value of 3. +STATIC const uint16_t BTSTACK_GAP_DEVICE_NAME_HANDLE = 3; + volatile int mp_bluetooth_btstack_state = MP_BLUETOOTH_BTSTACK_STATE_OFF; STATIC btstack_packet_callback_registration_t hci_event_callback_registration; @@ -250,6 +260,12 @@ int mp_bluetooth_init(void) { MP_STATE_PORT(bluetooth_btstack_root_pointers) = m_new0(mp_bluetooth_btstack_root_pointers_t, 1); mp_bluetooth_gatts_db_create(&MP_STATE_PORT(bluetooth_btstack_root_pointers)->gatts_db); + // Set the default GAP device name. + const char *gap_name = MICROPY_PY_BLUETOOTH_DEFAULT_GAP_NAME; + size_t gap_len = strlen(gap_name); + mp_bluetooth_gatts_db_create_entry(MP_STATE_PORT(bluetooth_btstack_root_pointers)->gatts_db, BTSTACK_GAP_DEVICE_NAME_HANDLE, gap_len); + mp_bluetooth_gap_set_device_name((const uint8_t *)gap_name, gap_len); + mp_bluetooth_btstack_port_init(); mp_bluetooth_btstack_state = MP_BLUETOOTH_BTSTACK_STATE_STARTING; @@ -344,6 +360,19 @@ void mp_bluetooth_get_device_addr(uint8_t *addr) { mp_hal_get_mac(MP_HAL_MAC_BDADDR, addr); } +size_t mp_bluetooth_gap_get_device_name(const uint8_t **buf) { + uint8_t *value = NULL; + size_t value_len = 0; + mp_bluetooth_gatts_db_read(MP_STATE_PORT(bluetooth_btstack_root_pointers)->gatts_db, BTSTACK_GAP_DEVICE_NAME_HANDLE, &value, &value_len); + *buf = value; + return value_len; +} + +int mp_bluetooth_gap_set_device_name(const uint8_t *buf, size_t len) { + mp_bluetooth_gatts_db_write(MP_STATE_PORT(bluetooth_btstack_root_pointers)->gatts_db, BTSTACK_GAP_DEVICE_NAME_HANDLE, buf, len); + return 0; +} + int mp_bluetooth_gap_advertise_start(bool connectable, int32_t interval_us, const uint8_t *adv_data, size_t adv_data_len, const uint8_t *sr_data, size_t sr_data_len) { DEBUG_EVENT_printf("mp_bluetooth_gap_advertise_start\n"); uint16_t adv_int_min = interval_us / 625; @@ -396,7 +425,9 @@ int mp_bluetooth_gatts_register_service_begin(bool append) { att_db_util_init(); att_db_util_add_service_uuid16(GAP_SERVICE_UUID); - att_db_util_add_characteristic_uuid16(GAP_DEVICE_NAME_UUID, ATT_PROPERTY_READ, ATT_SECURITY_NONE, ATT_SECURITY_NONE, (uint8_t *)"MPY BTSTACK", 11); + uint16_t handle = att_db_util_add_characteristic_uuid16(GAP_DEVICE_NAME_UUID, ATT_PROPERTY_READ | ATT_PROPERTY_DYNAMIC, ATT_SECURITY_NONE, ATT_SECURITY_NONE, NULL, 0); + assert(handle == BTSTACK_GAP_DEVICE_NAME_HANDLE); + (void)handle; att_db_util_add_service_uuid16(0x1801); att_db_util_add_characteristic_uuid16(0x2a05, ATT_PROPERTY_READ, ATT_SECURITY_NONE, ATT_SECURITY_NONE, NULL, 0); |