%% Copyright (C) 2013, 2014 Czech Technical University in Prague
%%
%% Authors:
%%     - Carlos Jenkins <carlos@jenkins.co.cr>
%%
%% This document contains proprietary information belonging to Czech
%% Technical University in Prague. Passing on and copying of this
%% document, and communication of its contents is not permitted
%% without prior written authorization.
%%
%% File : sfunction_din.tlc
%% Abstract:
%%     TLC file for inlining RPP digital input block.
%%
%% References:
%%     BlockTypeSetup() : rtw_tlc.pdf p. 277
%%     Start()          : rtw_tlc.pdf p. 279
%%     Outputs()        : rtw_tlc.pdf p. 281


%implements sfunction_din "C"

%include "common.tlc"


%% Function: BlockInstanceSetup ================================================
%function BlockInstanceSetup(block, system) void
    %assign ::rpp_din_present=1
    %assign pin_num = LibBlockParameterValue(p1, 0)
    
    %switch (%<pin_num>)
        %case 10
        %case 11
            %if EXISTS("rpp_irc_1_used") == 1
                %<LibBlockReportError(block, "Either IRC1 or Digital Input pin 10 and 11 blocks are allowed in one model, not both.")>
            %else
                %assign ::rpp_din_10_11_used = 1
            %endif
            %break
        %case 14
        %case 15
            %if EXISTS("rpp_irc_2_used") == 1
                %<LibBlockReportError(block, "Either IRC2 or Digital Input pin 14 and 15 blocks are allowed in one model, not both.")>
            %else
                %assign ::rpp_din_14_15_used = 1
            %endif
            %break
    %endswitch

    %if %<pin_num> < 8
        %% Create array if not exist
        %if EXISTS("rpp_din_in_model_array") == 0
            %assign ::rpp_din_in_model_array = [0, 0, 0, 0, 0, 0, 0, 0]
        %endif

        %if ::rpp_din_in_model_array[%<pin_num>] == 0
            %assign ::rpp_din_in_model_array[%<pin_num>] = 1
        %else
            %assign err_msg = "Only one Digital Input block of pin %<pin_num> is allowed in the model."
            %<LibBlockReportError(block, err_msg)>
        %endif
    %endif

%endfunction

%% Function: BlockTypeSetup ====================================================
%function BlockTypeSetup(block, system) void

    %% Ensure required header files are included
    %<RppCommonBlockTypeSetup(block, system)>
    %<LibAddToCommonIncludes("rpp/din.h")>

%endfunction


%% Function: Start =============================================================
%function Start(block, system) Output

    %if !SLibCodeGenForSim()
        %assign pin_num = LibBlockParameterValue(p1, 0)
        %if pin_num < 8
            %assign pull_up = LibBlockParameterValue(p3, 0) - 1
            %assign active = LibBlockParameterValue(p4, 0) - 1
            rpp_din_setup(%<pin_num>, %<pull_up>, %<active>, FALSE);
        %endif
    %endif

%endfunction


%% Function: Outputs ===========================================================
%function Outputs(block, system) Output

    %if !SLibCodeGenForSim()

        %% Declare temporal variables
        %if EXISTS("_RPP_DIN_TMP_VARS_") == 0
            %assign ::_RPP_DIN_TMP_VARS_ = 1
            int8_t din_tmp;
        %endif

        %% Error flag
        %assign err_flag = LibBlockOutputSignal(1, "", "", 0)

        %% First executed block must update cached values
        %if EXISTS("_RPP_DIN_UPDATE_") == 0
            %assign ::_RPP_DIN_UPDATE_ = 1
            if (rpp_din_update() != SUCCESS) {
                %<err_flag> = TRUE;
            }
        %endif

        %% Get pin number and if to use variable threshold
        %assign pin_num = LibBlockParameterValue(p1, 0)
        %assign var_thr = LibBlockParameterValue(p2, 0)

        %% Get pin value
	%if var_thr == 0
	  din_tmp = rpp_din_get(%<pin_num>);
	%else
	  din_tmp = rpp_din_get_tr(%<pin_num>);
	%endif
        if (din_tmp < 0) {
            %<err_flag> = TRUE;
            din_tmp = LOW;
        }

        %% Return input
        %assign digital_in = LibBlockOutputSignal(0, "", "", 0)
        %<digital_in> = din_tmp;

    %endif

%endfunction

%% [EOF]