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  1. #1
    Join Date
    Mar 2011
    Location
    Los Angeles, California
    Posts
    233

    Default Another 18F1320 ICD confusion

    Hi All!
    So there is a PIC program that someone else wrote that I am trying to get to work. Dannel was good enough to post a wonderful ICD program that works really great! Thanks Dannel! So I started by creating a simple "blink an LED" program so I know that except for this program an 18F1320 will work and that everything else is set up and configured correctly. So I go to compile this program, it compiles without any errors, program the 18F1320 and as far as I can seem to get is for everything to run up to the very first line of code "TRISB = %10000001 : TRISA.3 = 0". Then the ICD stops and will not restart and only gives the message I have grown to hate "ICD Connection Timeout". Now unless you re-compile and try running it again, nothing seems to run! There are two CONFIG sections in the program below, the first (commented out) will allow things to start up, the second goes directly to the connection timeout error! At this point I am beyond simple confusion. Thanks in advance, Ed
    '************************************************* ***************
    '* Name : Depth.bas *
    '* Author : Ed Cannady *
    '* Notice : Copyright (c) 2011 [select VIEW...EDITOR OPTIONS] *
    '* : All Rights Reserved *
    '* Date : 4/4/2011 *
    '* Version : 1.0 *
    '* Notes : For a 18F1320 and MS-5541 *
    '* *
    '************************************************* ***************

    Include "Modedefs.bas"
    define Loader_Used 1
    DEFINE OSC 20 'Define crystal frequency

    ;18F1320 EXT OSC RUNNING AT 20MHZ TO 40MHZ MCLR AS INPUT AND OSC PINS AS INPUTS

    ' ICD config that starts to work
    '#CONFIG
    ' __CONFIG _CONFIG1H, _HS_OSC_1H
    ' __CONFIG _CONFIG2H, _WDT_OFF_2H & _WDTPS_32K_2H
    ' __CONFIG _CONFIG4L, _LVP_OFF_4L
    '#ENDCONFIG

    ' Source Program Config settings
    #config
    __CONFIG _CONFIG1H, _HS_OSC_1H & _FSCM_OFF_1H & _RC_OSC_1H
    __CONFIG _CONFIG2L, _PWRT_ON_2L & _BOR_OFF_2L & _BORV_27_2L
    __CONFIG _CONFIG2H, _WDT_OFF_2H & _WDTPS_32K_2H
    __CONFIG _CONFIG3H, _MCLRE_OFF_3H
    __CONFIG _CONFIG4L, _DEBUG_OFF_4L & _LVP_ON_4L & _STVR_ON_4L
    __CONFIG _CONFIG5L, _CP0_OFF_5L & _CP1_OFF_5L
    __CONFIG _CONFIG5H, _CPB_OFF_5H & _CPD_OFF_5H
    __CONFIG _CONFIG6L, _WRT0_OFF_6L & _WRT1_OFF_6L
    __CONFIG _CONFIG6H, _WRTC_OFF_6H & _WRTB_OFF_6H & _WRTD_OFF_6H
    __CONFIG _CONFIG7L, _EBTR0_OFF_7L & _EBTR1_OFF_7L
    __CONFIG _CONFIG7H, _EBTRB_OFF_7H
    #endconfig
    '********************* Declaired Pins **************************
    Clk var PortA.0
    Dout VAR PortA.1 'data out from the MS5541
    Din var PortA.2 'data in to the MS5541
    Sclk var PortA.3 'MS5541 32.768 khz clock
    Mclk var PortB.1 'MS5541 Master clock for the MS5541
    '************************* Defines *****************************
    DEFINE DEBUG_REG PORTB 'Debug output pin port
    DEFINE DEBUG_BIT 6 'Debug output pin bit
    DEFINE DEBUG_BAUD 19200 'Debug baud rate
    DEFINE DEBUG_MODE 0 'Debug mode: 0 = True, 1 = Inverted
    '************** Intersema Variables *********************************
    C1 var word ' 5540 Pressure sensitivity
    C2 var word ' 5540 Pressure Offset
    C3 var word ' 5540 Temp Coef of pressure sensitivity
    C4 var word ' 5540 Temp Coef of Pressure Offset
    C5 var word ' 5540 Reference temperature
    C6 var word ' 5540 temp coef of Temp reading
    ' C1 to C6 are in EEROM as VAL.byte0, VAL.byte1 from 108 to 159
    D1 var word ' raw pressure word from Intersema sensor
    D2 var word ' raw temperature word
    D1Flag var bit
    W1 var word 'coefficient from 5540
    W2 var word 'coefficient from 5540
    W3 var word 'coefficient from 5540
    W4 var word 'coefficient from 5540
    ' W1 to W4 are NOT stored in EEROM - they are not needed again.
    dT var long ' intermediate calc value
    dT1 var long ' intermediate calc value
    dT2 var long
    UT1 var word ' Calibration temperature
    II var byte ' used ONLY within Intersema routines
    IJ var byte
    IK var byte
    IL var byte
    ILoop var word
    CalFlag var bit ' EEROM 99. Used to reduce wear on EEROM
    temp2 var word
    ' General purpose Intersema and DS1629 RTC/Temperature variables
    ClkChk var word ' = 8192 if IntRC clock is exactly on frequency
    TimeFlag var bit
    TempRead var word
    CntRem var word
    CntPerC var word
    d var BYTE[18]
    IW var long
    IX var long
    IY var long
    IZ var long
    T2 var long ' Second order Temperature correction
    P2 var long ' Second order Pressure correction
    Offset var long
    Senstvty var long
    Pressure var long '
    Celsius var long 'a LONG allows negative temperatures
    goto endofsubroutines ' jump subroutines at startup
    '*************************** Subroutines *****************************
    ResetIntersema:
    ' need 32768 @ 50% for Intersema on CCP2.

    TRISB = %10000001 : TRISA.3 = 0 'DIn, DOut & SClk (Where is stops!)

    ' high presspwr : pause 100 : hpwm 2, 127, 32767 : pause 50
    shiftout din, sclk, 0, [85, 85, 0\5] ' Sense of Din is IN to 5541
    pauseus 100
    return
    FetchWord:
    shiftin dout, sclk, 2, [ij, ii, ik\1]
    ' IJ is hi byte, II is lo byte, IK is a dummy and discarded
    return

    CalSensor:
    read 99, calflag : if calflag = 1 then calsensordone
    debug 13, 10, "Fetch Intersema data", 13, 10
    ' This fetches and unpacks the factory calibration coefficients
    ' from W1 ~ W4. W values need not be stored.
    ' These bitmaps are unpacked into the 6 working coefficients
    ' C1 to C6 which must be stored in EEROM for later use.
    ' W1
    gosub resetintersema
    shiftout din, sclk, 0, [87, 1\5] ' Send W1 pattern to all sensors
    gosub fetchword ' get reply
    W1.byte0 = ii
    W1.byte1 = ij
    ' W2
    gosub resetintersema
    shiftout din, sclk, 0, [215, 0\5] ' Send W2 pattern
    gosub fetchword
    W2.byte0 = ii
    W2.byte1 = ij
    ' W3
    gosub resetintersema
    shiftout din, sclk, 0, [55, 1\5] ' Send W3 pattern
    gosub fetchword
    W3.byte0 = ii
    W3.byte1 = ij
    ' W4
    gosub resetintersema
    shiftout din, sclk, 0, [183, 0\5] ' Send W4 pattern
    gosub fetchword
    W4.byte0 = ii
    W4.byte1 = ij
    ' Unpack W1 ~ W4 into C1 ~ C6 coefficients
    ' C1
    C1 = W1 >> 3
    write 108, c1.byte0
    write 109, c1.byte1
    ' C2
    C2 = ((W1 & %0000000000000111) << 10) + (W2 >> 6)
    write 110, c2.byte0
    write 111, c2.byte1
    ' C3
    C3 = W3 >> 6
    write 112, c3.byte0
    write 113, c3.byte1
    ' C4
    C4 = W4 >> 7
    write 114, c4.byte0
    write 115, c4.byte1
    ' C5
    C5 = ((W2 & %0000000000111111) << 6) + (W3 & %0000000000111111)
    write 116, c5.byte0
    write 117, c5.byte1
    ' C6
    C6 = W4 & %0000000001111111
    write 118, c6.byte0
    write 119, c6.byte1

    ' high pgc : pause 1
    ' debug "Intersema Factory data ", $0D, $0A, "W1 = ,"_
    ' , #w1, ", W2 = ,", #w2, ", W3 = ,", #w3, ", W4 = ,", #w4, $0D, $0A
    ' debug "Derived coefficients", $0D, $0A, "C1 = ,", #C1, ", C2 = ,", #C2,_
    ' ", C3 = ,", #C3, ", C4 = ,", #c4, ", C5 = ,", #C5, ", C6 = ,", #C6.byte0,_
    ' $0D, $0A
    ' read 99, calflag : if calflag = 0 then write 99, 1
    CalSensorDone:
    return
    ReadIntersema: '
    ' D1 is Pressure - D2 is Temperature
    ' Uses LONG datatype to handle negative temperatures
    ' This routine reads the sensor and returns Pressure word
    ' and Celsius long
    ' A, II, IJ, W and X are all destroyed
    gosub resetintersema
    ' D1
    shiftout din, sclk, 0, [47, 0\5] ' Select D1 pattern
    While dout = 1 : wend 'Convert5541Delay:
    gosub fetchword
    ' This returns ii = lobyte, ij = hibyte from the sensor
    D1.byte0 = ii
    D1.byte1 = ij
    ' D2
    shiftout din, sclk, 0, [79, 0\5] ' Select D2 pattern
    While dout = 1 : wend
    gosub fetchword
    D2.byte0 = ii
    D2.byte1 = ij
    CalcTempPress: ' 32 bit signed arithmetic version. Handles negatives.
    read 108, c1.byte0
    read 109, c1.byte1
    read 110, c2.byte0
    read 111, c2.byte1
    read 112, c3.byte0
    read 113, c3.byte1
    read 114, c4.byte0
    read 115, c4.byte1
    read 116, c5.byte0
    read 117, c5.byte1
    read 118, c6.byte0

    ' formulae for DS5541 are NOT the same as for DS5540
    ut1 = 8*c5 + 10000
    dt = d2 - ut1
    Celsius = 200 + dt*(c6 + 100)/2048
    offset = c2 + ((c4 - 250)*dt)/4096 +10000
    senstvty = c1/2 + ((c3 + 200)*dt)/8192 + 3000
    pressure = (senstvty * (d1 - offset))/4096 + 1000
    ' NOT applying second order temperature correction in this version.
    ' Note 2nd order correction formula ambiguity in datasheet.
    if celsius < 0 then 'high bit of 32 bit number is set
    temp2 = 1000 - celsius
    else
    temp2 = 1000 + celsius
    d[17] = temp2.byte0
    d[18] = temp2.byte1
    endif
    if calflag = 0 then
    ' high pgc : pause 1
    debug "MS5541 Celsius = ", sdec Celsius/10, ".", dec1 celsius//10, _
    ", Pressure = ", dec pressure, " mBar, recorded as ",_
    dec temp2, 13, 10
    endif
    return

    EndOfSubRoutines:
    ' *********************** Initialise *****************************

    FetchDepth:
    gosub readintersema
    ' debug "T2 = ", dec temp2, 13, 10
    debug dec (temp2 - 1000)/10, ".", dec1 (temp2 - 1000)//10, _
    ", ", #pressure, " mBar", 13, 10
    ' this returns Pressure & Celsius, both words.
    gosub resetintersema

  2. #2
    Join Date
    Sep 2004
    Location
    montreal, canada
    Posts
    6,896

    Default Re: Another 18F1320 ICD confusion

    try to get rid of those multiple statement on a single line, probably the ICD can't process it....


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