Add Sync, Start, and End classes for protocol 7

lib/timex_datalink_client.rb

@@ -43,6 +43,10 @@
 require "timex_datalink_client/protocol_4/time"
 require "timex_datalink_client/protocol_4/wrist_app"
 
+require "timex_datalink_client/protocol_7/end"
+require "timex_datalink_client/protocol_7/start"
+require "timex_datalink_client/protocol_7/sync"
+
 require "timex_datalink_client/protocol_9/alarm"
 require "timex_datalink_client/protocol_9/eeprom"
 require "timex_datalink_client/protocol_9/eeprom/chrono"

lib/timex_datalink_client/protocol_7/end.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+require "timex_datalink_client/helpers/crc_packets_wrapper"
+
+class TimexDatalinkClient
+  class Protocol7
+    class End
+      prepend Helpers::CrcPacketsWrapper
+
+      SETUP_PACKET = [0x92, 0x05]
+      CPACKET_SKIP = [0x21]
+
+      # Compile packets for data end command.
+      #
+      # @return [Array<Array<Integer>>] Two-dimensional array of integers that represent bytes.
+      def packets
+        [SETUP_PACKET, CPACKET_SKIP]
+      end
+    end
+  end
+end

lib/timex_datalink_client/protocol_7/start.rb

@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+
+require "timex_datalink_client/helpers/crc_packets_wrapper"
+
+class TimexDatalinkClient
+  class Protocol7
+    class Start
+      prepend Helpers::CrcPacketsWrapper
+
+      CPACKET_START = [0x20, 0x00, 0x00, 0x07]
+
+      SETUP_PACKETS = [
+        [
+          0x90, 0x05, 0x01, 0x44, 0x53, 0x49, 0x20, 0x54, 0x6f, 0x79, 0x73, 0x20, 0x70, 0x72, 0x65, 0x73, 0x65, 0x6e,
+          0x74, 0x73, 0x2e, 0x2e, 0x2e, 0x65, 0x42, 0x72, 0x61, 0x69, 0x6e, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00
+        ],
+        [0x91, 0x05, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04]
+      ]
+
+      # Compile packets for data start command.
+      #
+      # @return [Array<Array<Integer>>] Two-dimensional array of integers that represent bytes.
+      def packets
+        [CPACKET_START] + SETUP_PACKETS
+      end
+    end
+  end
+end

lib/timex_datalink_client/protocol_7/sync.rb

@@ -0,0 +1,40 @@
+# frozen_string_literal: true
+
+class TimexDatalinkClient
+  class Protocol7
+    class Sync
+      PING_BYTE = [0x78]
+      SYNC_1_BYTE = [0x55]
+      SYNC_2_BYTE = [0xaa]
+
+      SYNC_2_LENGTH = 5
+
+      attr_accessor :length
+
+      # Create a Sync instance.
+      #
+      # @param length [Integer] Number of 0x55 sync bytes to use.
+      # @return [Sync] Sync instance.
+      def initialize(length: 300)
+        @length = length
+      end
+
+      # Compile packets for syncronization data.
+      #
+      # @return [Array<Array<Integer>>] Two-dimensional array of integers that represent bytes.
+      def packets
+        [PING_BYTE + render_sync_1 + render_sync_2]
+      end
+
+      private
+
+      def render_sync_1
+        SYNC_1_BYTE * length
+      end
+
+      def render_sync_2
+        SYNC_2_BYTE * SYNC_2_LENGTH
+      end
+    end
+  end
+end

spec/lib/timex_datalink_client/protocol_7/end_spec.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+describe TimexDatalinkClient::Protocol7::End do
+  let(:end_instance) { described_class.new }
+
+  describe "#packets", :crc do
+    subject(:packets) { end_instance.packets }
+
+    it_behaves_like "CRC-wrapped packets", [[0x92, 0x05], [0x21]]
+  end
+end

spec/lib/timex_datalink_client/protocol_7/start_spec.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+describe TimexDatalinkClient::Protocol7::Start do
+  let(:start) { described_class.new }
+
+  describe "#packets", :crc do
+    subject(:packets) { start.packets }
+
+    it_behaves_like "CRC-wrapped packets", [
+      [0x20, 0x00, 0x00, 0x07],
+      [
+        0x90, 0x05, 0x01, 0x44, 0x53, 0x49, 0x20, 0x54, 0x6f, 0x79, 0x73, 0x20, 0x70, 0x72, 0x65, 0x73, 0x65, 0x6e,
+        0x74, 0x73, 0x2e, 0x2e, 0x2e, 0x65, 0x42, 0x72, 0x61, 0x69, 0x6e, 0x21, 0x00, 0x00, 0x00, 0x00, 0x00
+      ],
+      [0x91, 0x05, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04]
+    ]
+  end
+end

spec/lib/timex_datalink_client/protocol_7/sync_spec.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+require "spec_helper"
+
+describe TimexDatalinkClient::Protocol7::Sync do
+  let(:length) { 200 }
+  let(:sync) { described_class.new(length: length) }
+
+  describe "#packets" do
+    subject(:packets) { sync.packets }
+
+    it { should eq([[0x78] + [0x55] * length + [0xaa] * 5]) }
+
+    context "when length is 350" do
+      let(:length) { 350 }
+
+      it { should eq([[0x78] + [0x55] * length + [0xaa] * 5]) }
+    end
+  end
+end

timex_datalink_client.gemspec

@@ -61,6 +61,10 @@ Gem::Specification.new do |s|
     "lib/timex_datalink_client/protocol_4/time.rb",
     "lib/timex_datalink_client/protocol_4/wrist_app.rb",
 
+    "lib/timex_datalink_client/protocol_7/end.rb",
+    "lib/timex_datalink_client/protocol_7/start.rb",
+    "lib/timex_datalink_client/protocol_7/sync.rb",
+
     "lib/timex_datalink_client/protocol_9/alarm.rb",
     "lib/timex_datalink_client/protocol_9/eeprom.rb",
     "lib/timex_datalink_client/protocol_9/eeprom/chrono.rb",