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function To_Bytes is new Ada.Unchecked_Conversion
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(SPAD_Map, SPAD_Map_Bytes);
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SPAD_Count : UInt8;
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SPAD_Is_Aperture : Boolean;
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Ref_SPAD_Map_Bytes : SPAD_Map_Bytes;
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Ref_SPAD_Map : SPAD_Map;
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First_SPAD : UInt8;
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SPADS_Enabled : UInt8;
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Timing_Budget : UInt32;
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begin
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Status := SPAD_Info (This, SPAD_Count, SPAD_Is_Aperture);
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if not Status then
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return;
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end if;
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Read
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(This, REG_GLOBAL_CONFIG_SPAD_ENABLES_REF_0,
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Ref_SPAD_Map_Bytes, Status);
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Ref_SPAD_Map := To_Map (Ref_SPAD_Map_Bytes);
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-- Set reference spads
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if Status then
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Write (This, 16#FF#, UInt8'(16#01#), Status);
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end if;
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if Status then
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Write (This, REG_DYNAMIC_SPAD_REF_EN_START_OFFSET,
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UInt8'(16#00#), Status);
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end if;
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if Status then
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Write (This, REG_DYNAMIC_SPAD_NUM_REQUESTED_REF_SPAD,
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UInt8'(16#2C#), Status);
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end if;
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if Status then
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Write (This, 16#FF#, UInt8'(16#00#), Status);
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end if;
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if Status then
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Write (This, REG_GLOBAL_CONFIG_REF_EN_START_SELECT,
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UInt8'(16#B4#), Status);
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end if;
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if Status then
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if SPAD_Is_Aperture then
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First_SPAD := 13;
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else
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First_SPAD := 1;
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end if;
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SPADS_Enabled := 0;
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for J in UInt8 range 1 .. 48 loop
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if J < First_SPAD or else SPADS_Enabled = SPAD_Count then
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-- This bit is lower than the first one that should be enabled,
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-- or SPAD_Count bits have already been enabled, so zero this
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-- bit
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Ref_SPAD_Map (J) := False;
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elsif Ref_SPAD_Map (J) then
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SPADS_Enabled := SPADS_Enabled + 1;
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end if;
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end loop;
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end if;
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if Status then
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Ref_SPAD_Map_Bytes := To_Bytes (Ref_SPAD_Map);
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Write (This, REG_GLOBAL_CONFIG_SPAD_ENABLES_REF_0,
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Ref_SPAD_Map_Bytes, Status);
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end if;
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-- Load tuning Settings
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-- default tuning settings from vl53l0x_tuning.h
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if Status then
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Write (This, 16#FF#, UInt8'(16#01#), Status);
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Write (This, 16#00#, UInt8'(16#00#), Status);
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Write (This, 16#FF#, UInt8'(16#00#), Status);
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Write (This, 16#09#, UInt8'(16#00#), Status);
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Write (This, 16#10#, UInt8'(16#00#), Status);
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Write (This, 16#11#, UInt8'(16#00#), Status);
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Write (This, 16#24#, UInt8'(16#01#), Status);
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Write (This, 16#25#, UInt8'(16#FF#), Status);
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Write (This, 16#75#, UInt8'(16#00#), Status);
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Write (This, 16#FF#, UInt8'(16#01#), Status);
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Write (This, 16#4E#, UInt8'(16#2C#), Status);
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Write (This, 16#48#, UInt8'(16#00#), Status);
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Write (This, 16#30#, UInt8'(16#20#), Status);
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Write (This, 16#FF#, UInt8'(16#00#), Status);
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Write (This, 16#30#, UInt8'(16#09#), Status);
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Write (This, 16#54#, UInt8'(16#00#), Status);
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Write (This, 16#31#, UInt8'(16#04#), Status);
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Write (This, 16#32#, UInt8'(16#03#), Status);
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Write (This, 16#40#, UInt8'(16#83#), Status);
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Write (This, 16#46#, UInt8'(16#25#), Status);
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Write (This, 16#60#, UInt8'(16#00#), Status);
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