Bootloader pic16f1825 @32mhz pll

[tumbleweed]

I don't have a chip to try it on, but off the top of my head that looks ok.

Are you sure it's not the _config _WDTEN_ON that's fouling things up?
Try _WDTEN_OFF or _WDTE_SWDTEN (if you want it programmable) and see what happens.

[richard]

didn't help

last effort

; optional path information - default output folder is 
; user documents -> umcbuild... 
[PATH] 
Output=C:\MYBOOTLOADER
[TEMPLATE] 
;PIC18=..\src\18F\umc_loader.asm 
PIC16=..\src\16F\umc_loader.asm 
; device name and OSC... 
[MCU] 
Device=16F1825 
OSC=8000000 
[USART] 
BAUDRATE = 19200 ; initial startup baudrate (default is 19200) 
BRGH16 = 1 ; 16 bit SPBRG support (default is OFF) 
; device configuration settings... 
[CONFIG] ;----- CONFIG1 Options -------------------------------------------------- 
 __config        _CONFIG1,    _FOSC_INTOSC & _CP_OFF & _WDTE_OFF  &  _PWRTE_ON  &  _MCLRE_ON  & _CLKOUTEN_OFF
 __config      _CONFIG2, _PLLEN_OFF & _LVP_OFF
; place startup code in here... 
[USERCODE] 
;banksel APFCON0 
; you need this as APFCON0 is at banked address. 
; bCf APFCON0,7 
; bCf APFCON0,2 
; banksel ANSELC ; you need this as ANSELA is at banked address.
 movlb 3
 BCF ANSELC,5
 BCF ANSELC,4
 movlb 1
 BSF TRISC,4
 BSF TRISC,5
 ;movlb 1
 movlw 0x70 ; 8 MHz
 movwf OSCCON
; btfss OSCSTAT,6
; goto $-1

[Dave]

The attached is what I use when using the ccp on portc. It places com on porta.

[richard]

tried that dave , still no go

query this though I say It places com on portc

what I use when using the ccp on portc. It places com on porta.

banksel APFCON0 ; you need this as APFCON0 is at banked address.
movlw b'00000000' ; ALL PORTS TO DEFAULT
;movlw b'10000100' ; COM PORT TO RA0:RA1
movwf APFCON0

not sure where i'm going wrong

[Dave]

You are right Richard, I had the wrong file on the wrong computer. Try this one. I really need to watch what I'm doing....

[richard]

Many thanks dave , that's got it going.

[richard]

bootloader confusion

take this pgm

'****************************************************************
'*  Name    :blinky.pbp                                        *
'*  Author  : richard                                   *
'*  Notice  :                                *
'*          :                                *
'*  Date    :                                          *
'*  Version :    16f1825     @3.3 volts                               *
'*  Notes   :       *
'*          :              *
'*            
'****************************************************************
  
#CONFIG
             __config        _CONFIG1,    _FOSC_INTOSC & _CP_OFF & _WDTE_OFF &  _PWRTE_ON  &  _MCLRE_ON  & _CLKOUTEN_OFF
              __config      _CONFIG2, _PLLEN_OFF & _LVP_OFF
#ENDCONFIG
DEFINE LOADER_USED 1
DEFINE OSC 32
DEFINE HSER_RCSTA 90h ' Enable serial port & continuous receive
DEFINE HSER_TXSTA 24h ' Enable transmit, BRGH = 1
DEFINE HSER_CLROERR 1 ' Clear overflow automatically
DEFINE HSER_SPBRG 207  ' 38400 Baud @ 32MHz, 
SPBRGH = 0
BAUDCON.3 = 1         ' Enable 16 bit baudrate generator      
led var latc.0
TRISA=%111111
TRISC=%111110
OSCCON=$F0
ANSELA=0
ANSELC=0

while !OSCSTAT.6
wend 
  
hserout [ "Ready",9,"%",bin6 trisc,13,10] 
  
mainloop:
led=!led  
pause 1000 
goto mainloop

when loaded with pk2

printout

Ready %111110

when loaded with bootloader

Ready %111110

ie all portc is input except bit 0, yet hserout works tx=portc.4



data sheet says

Setting the TXEN bit of the TXSTA register enables the
transmitter circuitry of the EUSART. Clearing the SYNC
bit of the TXSTA register configures the EUSART for
asynchronous operation. Setting the SPEN bit of the
RCSTA register enables the EUSART and automatically
configures the TX/CK I/O pin as an output. If the TX/CK
pin is shared with an analog peripheral, the analog I/O
function must be disabled by clearing the corresponding
ANSEL bit.

all is good


yet for the bootloader

; optional path information - default output folder is 
; user documents -> umcbuild... 
[PATH] 
Output=C:\MYBOOTLOADER
[TEMPLATE] 
;PIC18=..\src\18F\umc_loader.asm 
PIC16=..\src\16F\umc_loader.asm 
; device name and OSC... 
[MCU] 
Device=16F1825 
OSC=32000000 
[USART] 
BAUDRATE = 19200 ; initial startup baudrate (default is 19200) 
BRGH16 = 1 ; 16 bit SPBRG support (default is OFF) 
; device configuration settings... 
[CONFIG] ;----- CONFIG1 Options -------------------------------------------------- 
 __config        _CONFIG1,    _FOSC_INTOSC & _CP_OFF & _WDTE_OFF  &  _PWRTE_ON  &  _MCLRE_ON  & _CLKOUTEN_OFF
 __config      _CONFIG2, _PLLEN_ON & _LVP_OFF
; place startup code in here... 
[USERCODE] 
 movlb 3
 BCF ANSELC,5
 BCF ANSELC,4
 movlb 1
 BCF TRISC,4       without this bootloader fails 
 BSF TRISC,5
 movlw 0x70 ; 32 MHz
 movwf OSCCON
 btfss OSCSTAT,6
 goto $-1

I just don't follow it