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Lib/asm/DSP2833x_ADC_cal.asm

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+;; TI File $Revision: /main/1 $
+;; Checkin $Date: July 30, 2007   10:29:23 $
+;;###########################################################################
+;;
+;; FILE:    ADC_cal.asm
+;;
+;; TITLE:   2833x Boot Rom ADC Cal routine.
+;;
+;; Functions:
+;;
+;;     _ADC_cal - Copies device specific calibration data into ADCREFSEL and 
+;;                ADCOFFTRIM registers 
+;; Notes:
+;;
+;;###########################################################################
+;; $TI Release: 2833x/2823x Header Files V1.32 $
+;; $Release Date: June 28, 2010 $
+;; $Copyright:
+;// Copyright (C) 2009-2024 Texas Instruments Incorporated - http://www.ti.com/
+;//
+;// Redistribution and use in source and binary forms, with or without 
+;// modification, are permitted provided that the following conditions 
+;// are met:
+;// 
+;//   Redistributions of source code must retain the above copyright 
+;//   notice, this list of conditions and the following disclaimer.
+;// 
+;//   Redistributions in binary form must reproduce the above copyright
+;//   notice, this list of conditions and the following disclaimer in the 
+;//   documentation and/or other materials provided with the   
+;//   distribution.
+;// 
+;//   Neither the name of Texas Instruments Incorporated nor the names of
+;//   its contributors may be used to endorse or promote products derived
+;//   from this software without specific prior written permission.
+;// 
+;// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
+;// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
+;// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+;// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
+;// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+;// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
+;// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+;// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+;// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+;// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
+;// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+;// $
+;;###########################################################################
+
+    .def _ADC_cal
+	.asg "0x711C",   ADCREFSEL_LOC
+
+;-----------------------------------------------
+; _ADC_cal
+;-----------------------------------------------
+;-----------------------------------------------
+; This is the ADC cal routine.This routine is programmed into 
+; reserved memory by the factory. 0xAAAA and 0xBBBB are place- 
+; holders for calibration data.  
+;The actual values programmed by TI are device specific. 
+;
+; This function assumes that the clocks have been
+; enabled to the ADC module.
+;-----------------------------------------------
+
+    .sect ".adc_cal"
+
+_ADC_cal
+    MOVW  DP,   #ADCREFSEL_LOC >> 6
+    MOV   @28,  #0xAAAA            ; actual value may not be 0xAAAA
+    MOV   @29,  #0xBBBB             ; actual value may not be 0xBBBB
+    LRETR
+;eof ----------