codeigniter - How to combine and & or operators in grocery crud -


I am using codeigniter and grocerycrud, I want to set up table with grocerycrud like this: 

  SELECT * FROM from `dashboard`. 'Medid_ludlum` where FK_ludlum =' 190.26.88.131 'and date & gt; = '2014-03-04 09:40:00' and date & lt; = '2014-03-05 09:40: 00' and (ErrorGode = 1 or Audio_Status = 1);   
 I tried to do this:  
  $ uno = '1'; $ crud2 = new grocery store (); $ Crud2- & gt; set_theme ('datatables'); $ Crud2- & gt; Where ('FK_ludlum', $ ludlum_id); $ Crud2- & gt; Where ('date & gt; =', $ fechainicio); $ crud2- & gt; Where ('date & lt; =', $ fechafin); $ crud2- & gt; Where ('error_code =', $ uno); $ crud2- & gt; Or_where ('audio_status =', $ uno); $ Crud2- & gt; set_table ('medidas_ludlum'); $ Crud2- & gt; Column ('measurement', 'fecha', 'audio_status', 'high_alarm_status', 'low_alarm_status', 'over_range_status', 'monitor_status', 'error_code'); $ Crud2- & gt; set_language ("Spanish"); $ Crud2- & gt; unset_add (); $ crud2- & gt; Unset_delete (); $ crud2- & gt; Unset_edit (); $ Crud2- & gt; unset_read (); $ Data ['crud2'] = $ crud2- & gt; Render ();   
 Although this is not giving the right result, for example, I'm getting rows that are out of range, is there a way to install the CRUD?   
 
 
 Grocery curd is also using the active record of coding so that you get your  where ( )  can group with grouped conditions as the bottom,  or_ where ()  function  
  $ crud2-> gt; There is no need to use '(error_code ='. $ Uno. 'Or' audio_status = '. $ Uno') ', null, FALSE).   
 or  
  $ crud2-> Where ('(error_code = 1 or audio_status = 1)', blank, incorrect);   
 The problem occurs in your query when you use the  or_ where ()  function, where this section is  and error_code = 1 or audio_status = 1  and the approach I have provided will give you where in the form of  and (error_code = 1 or audio_status = 1)  a group condition  
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