HBUSIN stops program? – 72 days old

[Frizie]

Hi people.

I've a problem with HBUSIN (HBUSOUT not tried yet)
If I activate this command, then the program stops by this command.

DEVICE = 18F45K40


CONFIG_START
' FEXTOSC   = HS              ;HS (crystal oscillator) above 8 MHz; PFM set to high power
' RSTOSC    = EXTOSC          ;EXTOSC, with EXTOSC operating per FEXTOSC bits   
  FEXTOSC   = OFF             ;Oscillator not enabled
  RSTOSC    = HFINTOSC_64MHZ  ;HFINTOSC with HFFRQ = 64 MHz and CDIV = 1:1  
' RSTOSC    = EXTOSC_4PLL     ;EXTOSC with 4x PLL, with EXTOSC operating per FEXTOSC bits  
  CLKOUTEN  = OFF             ;CLKOUT function is disabled
  CSWEN     = ON              ;Writing to NOSC and NDIV is allowed
  FCMEN     = OFF             ;Fail-Safe Clock Monitor disabled
  MCLRE     = INTMCLR         ;If LVP = 0, MCLR pin function is port defined function; If LVP =1, RE3 pin function is MCLR
  PWRTE     = ON              ;Power up timer enabled
  LPBOREN   = OFF             ;ULPBOR disabled
  BOREN     = ON              ;Brown-out Reset enabled according to SBOREN
  BORV      = VBOR_245        ;Brown-out Reset Voltage (VBOR) set to 2.45V
  ZCD       = OFF             ;Zero Cross Detection disabled. ZCD can be enabled by setting the ZCDSEN bit of ZCDCON
  PPS1WAY   = ON              ;PPSLOCK bit can be cleared and set only once; PPS registers remain locked after one clear/set cycle  
  STVREN    = ON              ;Stack full/underflow will cause Reset
  DEBUG     = OFF             ;Background debugger disabled
  XINST     = OFF             ;Extended Instruction Set and Indexed Addressing Mode disabled
  WDTCPS    = WDTCPS_31       ;Divider ratio 1:65536; software control of WDTPS
  WDTE      = OFF 'ON             ;WDT enabled regardless of sleep
  WDTCWS    = WDTCWS_7        ;Window always open (100%); software control; keyed access not required
  WDTCCS    = SC              ;Software Control
  WRT0      = OFF             ;Block 0 (000800-001FFFh) not write-protected
  WRT1      = OFF             ;Block 1 (002000-003FFFh) not write-protected
  WRT2      = OFF             ;Block 2 (004000-005FFFh) not write-protected
  WRT3      = OFF             ;Block 3 (006000-007FFFh) not write-protected
  WRTC      = OFF             ;Configuration registers (300000-30000Bh) not write-protected
  WRTB      = OFF             ;Boot Block (000000-0007FFh) not write-protected
  WRTD      = ON              ;Data EEPROM write-protected
  SCANE     = ON              ;Scanner module is available for use, SCANMD bit can control the module
  LVP       = OFF             ;Low voltage programming disabled.
  CP        = OFF             ;UserNVM code protection disabled
  CPD       = OFF             ;DataNVM code protection disabled
  EBTR0     = OFF             ;Block 0 (000800-001FFFh) not protected from table reads executed in other blocks
  EBTR1     = OFF             ;Block 1 (002000-003FFFh) not protected from table reads executed in other blocks
  EBTR2     = OFF             ;Block 2 (004000-005FFFh) not protected from table reads executed in other blocks
  EBTR3     = OFF             ;Block 3 (006000-007FFFh) not protected from table reads executed in other blocks
  EBTRB     = OFF             ;Boot Block (000000-0007FFh) not protected from table reads executed in other blocks
CONFIG_END




DECLARE ALL_DIGITAL = TRUE
DECLARE XTAL        = 64      ;64MHz internal oscillator
DECLARE HSCL_PIN    = PORTC.3 ;PPS (Peripheral Pin Select) voor HBUSIN/HBUSOUT (clock)
DECLARE HSDA_PIN    = PORTC.4 ;PPS (Peripheral Pin Select) voor HBUSIN/HBUSOUT (data)
                   
DECLARE LCD_ENPIN   = PORTD.2 ;\
DECLARE LCD_RSPIN   = PORTD.3 ;- Tijdelijk LC-Display
DECLARE LCD_DTPIN   = PORTD.4 ;/




;Include files
INCLUDE "c:\PIC programmas\PPS_18FxxK40.inc"   ;Bevat de assembler routines voor instellen van de Peripheral Pin Selection (PPS)


;I²C ID-slave adresnamen (Externe EEPROM)
SYMBOL EE24C512r  = %10100001 ;ID-slave adres om 24C512 uit te lezen (r = read)
SYMBOL EE24C512w  = %10100000 ;ID-slave adres om naar 24C512 te schrijven (w = write)


SYMBOL SCL        = PORTC.3   ;Q: I²C Serial ClocK - voor o.a. de externe EEPROM met machine-instellingen
SYMBOL SDA        = PORTC.4   ;I: I²C Serial DatA  - voor o.a. de externe EEPROM met machine-instellingen




;Variabelen declareren (alfabetische volgorde)
DIM Var1    AS WORD
DIM Var2    AS WORD


CLEAR                         ;Wis RAM geheugen


DELAYMS 150                   ;Signaal stabilisering


CLS
PRINT @Var1                   ;Display test
DELAYMS 1000


GOTO InitialiseerPPS






;======= MAIN PROGRAM ========
Main:


Var1 = 100
PRINT AT 1, 1, @Var1, "< "


Var2 = HBUSIN EE24C512r, 256  ;HBUSIN manner 1
'HBUSIN Var2                  ;HBUSIN manner 2
'HBUSIN EE24C512r, 256, [Var1];HBUSIN manner 3
 
WHILE
  PRINT AT 1, 1, @Var1, "< "
  PRINT AT 2, 1, @Var2, "< "
  DELAYMS 250
  INC Var1
WEND






;======= INITIALISEREN ======= Voor voorbeelden hierover, open het "PPS_18FxxK40.inc" bestand (met bijvoorbeeld Proton of kladblok) en scroll helemaal naar onder
InitialiseerPPS:              ;PPS (Peripheral Pin Selection) PIC pin toeverwijzing
'  iPPSInput (cIn_Fn_RX1DT1, cIn_Pin_RC7)    ;RX1 to RC7 input, USB ontvangst kanaal, data afkomstig van het bedieningspaneel komt op pin PORTC.7 binnen
'  iPPSOutput(cOut_Pin_RC6,  cOut_Fn_TX1CK1) ;RC6 output from TX1, USB zend kanaal, data dat naar het bedieningspaneel verzonden moet worden wordt op pin PORTC.6 aangeboden


'  iPPSInput (cIn_Fn_MSSP1DAT, cIn_Pin_RC4)
  iPPSOutput(cOut_Pin_RC4,  cOut_Fn_SDO1) 
  iPPSOutput(cOut_Pin_RC3,  cOut_Fn_SCK1)   ;SCK1/SCL1 clock output voor I²C
GOTO Main                     ;Start nu met het hoofdprogramma

Problem is, in the example program above, the program stops at the point where HBUSIN is located, and I don't know why...
Maybe I've something wrong with the settings from PPS or maybe there is something wrong by PPS.
I don't know, I'm busy with it a half day but I've got stuck.

(Device: 18F45K40 / Compiler: V3.6.1.7)

Frizie.

[Tim]

Hbusin is a hardware command that has to wait until the flag says there is data in the register. So if no data is sent then I will wait. Just like HRSIN

Look to see if there is a timeout for that command. Or you can look for the flag yourself, if it's set then run the Hbusin code to collect the data.

Personally I use interrupt code and let it all run in the background.

[charliecoultas]

Frizie

The two HBSIN commands are commented out, but I guess that's not the problem.

Charlie

[Frizie]

Thanx Tim.

I didn't knew that, so now I can look further.
Then I guess there is still something wrong with the PPS settings, because on an old 18F452 the same routine with the same external 24C512 EEPROM runs fine for many years.

To be continued.


@Charlie.
I know the other two HBUSIN lines are commented out.
But that's because I've tested more variations of the HBUSIN command.

Frizie.

[Les]

Also remember, there is no real benefit in using the Hbus commands, and I truly wish I had not placed them into the compiler, because the of the mess Microchip have made of their peripherals over the years.

You are better off using the I2Cout/I2CIn commands or the Bus commands.

I'll take a look at the commands as soon as possible.

[Tim]

Opps

I did not do my checking. Hbus in an i2c command not SPI

I was talking about SPI

Sorry!

[Frizie]

Hi Les.

Today I'm working further on my PIC program to get the I2C EEPROM working together with the PPS, but I found another anomaly.
I get an assembler error when I activate DECLARE HSERIN2_PIN = PORTC.4 (because I'm busy to test other PPS functions)
Assembler error message: _PPS_FN_RX2 not found.
(18F45K40)

I2CIN en I2COUT no succes so far, but lucky they don't stop the program as HBUSIN does.

Frizie.

[Frizie]

Succes!
Bút with I2IN / I2COUT on the standard ports (PORTC.3 SCL / PORTC.4 SDA)
And I shouldn't declare the PPS even if it's the standard PORTs (as I did in the examples in this topic, I don't know why I did that .


For those who gonna use the 24C512 (or other type EEPROM from this serie like 24C32, 24C256)

'Compiler versie V3.6.1.7


DEVICE = 18F45K40


CONFIG_START
' FEXTOSC   = HS              ;HS (crystal oscillator) above 8 MHz; PFM set to high power
' RSTOSC    = EXTOSC          ;EXTOSC, with EXTOSC operating per FEXTOSC bits   
  FEXTOSC   = OFF             ;Oscillator not enabled
  RSTOSC    = HFINTOSC_64MHZ  ;HFINTOSC with HFFRQ = 64 MHz and CDIV = 1:1  
' RSTOSC    = EXTOSC_4PLL     ;EXTOSC with 4x PLL, with EXTOSC operating per FEXTOSC bits  
  CLKOUTEN  = OFF             ;CLKOUT function is disabled
  CSWEN     = ON              ;Writing to NOSC and NDIV is allowed
  FCMEN     = OFF             ;Fail-Safe Clock Monitor disabled
  MCLRE     = INTMCLR         ;If LVP = 0, MCLR pin function is port defined function; If LVP =1, RE3 pin function is MCLR
  PWRTE     = ON              ;Power up timer enabled
  LPBOREN   = OFF             ;ULPBOR disabled
  BOREN     = ON              ;Brown-out Reset enabled according to SBOREN
  BORV      = VBOR_245        ;Brown-out Reset Voltage (VBOR) set to 2.45V
  ZCD       = OFF             ;Zero Cross Detection disabled. ZCD can be enabled by setting the ZCDSEN bit of ZCDCON
  PPS1WAY   = ON              ;PPSLOCK bit can be cleared and set only once; PPS registers remain locked after one clear/set cycle  
  STVREN    = ON              ;Stack full/underflow will cause Reset
  DEBUG     = OFF             ;Background debugger disabled
  XINST     = OFF             ;Extended Instruction Set and Indexed Addressing Mode disabled
  WDTCPS    = WDTCPS_31       ;Divider ratio 1:65536; software control of WDTPS
  WDTE      = OFF 'ON             ;WDT enabled regardless of sleep
  WDTCWS    = WDTCWS_7        ;Window always open (100%); software control; keyed access not required
  WDTCCS    = SC              ;Software Control
  WRT0      = OFF             ;Block 0 (000800-001FFFh) not write-protected
  WRT1      = OFF             ;Block 1 (002000-003FFFh) not write-protected
  WRT2      = OFF             ;Block 2 (004000-005FFFh) not write-protected
  WRT3      = OFF             ;Block 3 (006000-007FFFh) not write-protected
  WRTC      = OFF             ;Configuration registers (300000-30000Bh) not write-protected
  WRTB      = OFF             ;Boot Block (000000-0007FFh) not write-protected
  WRTD      = ON              ;Data EEPROM write-protected
  SCANE     = ON              ;Scanner module is available for use, SCANMD bit can control the module
  LVP       = OFF             ;Low voltage programming disabled.
  CP        = OFF             ;UserNVM code protection disabled
  CPD       = OFF             ;DataNVM code protection disabled
  EBTR0     = OFF             ;Block 0 (000800-001FFFh) not protected from table reads executed in other blocks
  EBTR1     = OFF             ;Block 1 (002000-003FFFh) not protected from table reads executed in other blocks
  EBTR2     = OFF             ;Block 2 (004000-005FFFh) not protected from table reads executed in other blocks
  EBTR3     = OFF             ;Block 3 (006000-007FFFh) not protected from table reads executed in other blocks
  EBTRB     = OFF             ;Boot Block (000000-0007FFh) not protected from table reads executed in other blocks
CONFIG_END




DECLARE ALL_DIGITAL  = TRUE
DECLARE XTAL         = 64     ;64MHz internal oscillator
DECLARE I2C_SLOW_BUS = ON
DECLARE I2C_BUS_SCL  = ON     ;Geen pull-up op de print aanwezig voor de kloklijn (ook niet plaatsen!)




DECLARE LCD_ENPIN PORTD.2     ;\
DECLARE LCD_RSPIN PORTD.3     ;- Tijdelijk LC-Display
DECLARE LCD_DTPIN PORTD.4     ;/






SYMBOL SCL        = PORTC.3   ;Q: I²C Serial ClocK - voor o.a. de externe 24C512 EEPROM
SYMBOL SDA        = PORTC.4   ;I: I²C Serial DatA  - voor o.a. de externe 24C512 EEPROM


;I²C ID-slave adresnamen (Externe EEPROM)
SYMBOL EE24C512r  = %10100001 ;ID-slave adres om 24C512 uit te lezen (r = read)
SYMBOL EE24C512w  = %10100000 ;ID-slave adres om naar 24C512 te schrijven (w = write)




DIM WD1 AS WORD               ;Word Dummy 1




I2COUT SDA, SCL, EE24C512w, 256, [1234]  ;Write to EEPROM address 256 (the 24C512 must have a 16-bits address!)
DELAYMS 1000
I2CIN  SDA, SCL, EE24C512r, 256, [WD1]   ;Read the EEPROM
CLS
PRINT @WD1

Regards,
Frizie.

[towlerg]

Also remember, there is no real benefit in using the Hbus commands, and I truly wish I had not placed them into the compiler, because the of the mess Microchip have made of their peripherals over the years.

Les, in what way are the Hbus commands different than the alternatives?

[Frizie]

A benefit of the (software) commands I2CIN and I2COUT is that you can apply these to almost all port-pins.
Incidentally, remember that there should be a short delay after I2COUT (= writing to) when using an external EEPROM (not mentioned in the example above), especially if you do multiple write jobs after eachother.

Frizie.