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setup_adc_ports generates incorrect assembly codes

 
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epalite



Joined: 06 Apr 2008
Posts: 16

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setup_adc_ports generates incorrect assembly codes
PostPosted: Tue Apr 20, 2010 3:15 am     Reply with quote
Hi,

setup_adc_ports generates following incorrect assemblies, on target 16F1827.

Compiler version "CCS PCM C Compiler, Version 4.104, 51616"

1. There are no registers at BANK 3 0x10 aka 0x190.

Code:

   0DB    1010     BCF 0x10, 0
   0DC    1090     BCF 0x10, 0x1
   0DD    1110     BCF 0x10, 0x2


2. ADPREF<1:0> is incorrectly selected. 0x1e should have both bit 0 and 1 set.

Code:

   0DF    101E     BCF 0x1e, 0
   0E0    149E     BSF 0x1e, 0x1


However, revising 16F1827.h on following lines helps to fix the ADPREF error.

Code:

#define VSS_1V024            0x1300        //| Range 0-1.024V
#define VSS_2V048            0x2300        //| Range 0-2.048V
#define VSS_4V096            0x3300        //| Range 0-4.096V


Full disassembly:

Code:

174:                  setup_adc_ports(sAN11 | VSS_1V024);   
   0D5    3041     MOVLW 0x41
   0D6    0021     MOVLB 0x1
   0D7    009D     MOVWF 0x1d
   0D8    3010     MOVLW 0x10
   0D9    0023     MOVLB 0x3
   0DA    008D     MOVWF 0xd
   0DB    1010     BCF 0x10, 0
   0DC    1090     BCF 0x10, 0x1
   0DD    1110     BCF 0x10, 0x2
   0DE    0021     MOVLB 0x1
   0DF    101E     BCF 0x1e, 0
   0E0    149E     BSF 0x1e, 0x1
   0E1    3000     MOVLW 0
   0E2    0023     MOVLB 0x3
   0E3    008C     MOVWF 0xc


Please confirm/regress and appreciates early fix on confirmation. Thanks!
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Tue Apr 20, 2010 12:50 pm     Reply with quote
See this thread. If you believe you have found additional bugs, you
should also email CCS support:
http://www.ccsinfo.com/forum/viewtopic.php?t=42233
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