179     char preamble[3] = {static_cast<uint8_t>(PacketType::EVENT), 9, 0};  in WriteInboundEvent()  local
180     preamble[2] = strlen(payload) & 0xFF;  in WriteInboundEvent()
210     char preamble[5] = {static_cast<uint8_t>(PacketType::ACL_DATA), 19, 92, 0,  in WriteAndExpectManyInboundAclDataPackets()  local
213     preamble[3] = length & 0xFF;  in WriteAndExpectManyInboundAclDataPackets()
214     preamble[4] = (length >> 8) & 0xFF;  in WriteAndExpectManyInboundAclDataPackets()
216     EXPECT_CALL(acl_cb_, Call(PacketMatches(preamble + 1, sizeof(preamble) - 1,  in WriteAndExpectManyInboundAclDataPackets()
221       TEMP_FAILURE_RETRY(write(chip_uart_fd_, preamble, sizeof(preamble)));  in WriteAndExpectManyInboundAclDataPackets()
232     char preamble[5] = {static_cast<uint8_t>(PacketType::ACL_DATA), 19, 92, 0,  in WriteAndExpectManyAclDataPacketsDifferentOffsetsShort()  local
235     preamble[3] = length & 0xFF;  in WriteAndExpectManyAclDataPacketsDifferentOffsetsShort()
236     preamble[4] = 0;  in WriteAndExpectManyAclDataPacketsDifferentOffsetsShort()
238     EXPECT_CALL(acl_cb_, Call(PacketMatches(preamble + 1, kAclHeaderSize,  in WriteAndExpectManyAclDataPacketsDifferentOffsetsShort()
247       for (size_t i = 0; i < sizeof(preamble); i++) {  in WriteAndExpectManyAclDataPacketsDifferentOffsetsShort()
248         all_packets[total_bytes++] = preamble[i];  in WriteAndExpectManyAclDataPacketsDifferentOffsetsShort()
441     char preamble[5] = {static_cast<uint8_t>(PacketType::ACL_DATA), 19, 92, 0,  in WriteAndExpectManyInboundAclDataPackets()  local
444     preamble[3] = length & 0xFF;  in WriteAndExpectManyInboundAclDataPackets()
445     preamble[4] = (length >> 8) & 0xFF;  in WriteAndExpectManyInboundAclDataPackets()
447     EXPECT_CALL(acl_cb_, Call(PacketMatches(preamble + 1, sizeof(preamble) - 1,  in WriteAndExpectManyInboundAclDataPackets()
452       TEMP_FAILURE_RETRY(write(chip_uart_fd_, preamble, sizeof(preamble)));  in WriteAndExpectManyInboundAclDataPackets()