Software reset - What am I doing wrong?

[mackrackit]

Can you post your code and configs along with what demo board you are using?

[Christopher4187]

I'm using the MCP2515 Demo boards from Microchip. I thought about that being an issue but it can't be because their code doesn't require a reset. If I was able to understand C I'd be able to solve this problem as they provide the source code to you. I'm pretty sure I copied the configs line-for-line from the source code. Anyhow, here it is:

DEFINE OSC 20
' ==============================================================================
'                        CONFIGS
'===============================================================================


@ __CONFIG _CONFIG1L, _PLLDIV_5_1L & _CPUDIV_OSC1_PLL2_1L & _USBDIV_2_1L
@ __CONFIG _CONFIG1H, _FOSC_HS_1H & _FCMEN_OFF_1H & _IESO_OFF_1H
@ __CONFIG _CONFIG2L, _PWRT_ON_2L & _BOR_ON_2L & _BORV_3_2L & _VREGEN_ON_2L
@ __CONFIG _CONFIG2H, _WDT_OFF_2H & _WDTPS_32768_2H 
@ __CONFIG _CONFIG3H, _CCP2MX_ON_3H & _PBADEN_OFF_3H & _LPT1OSC_OFF_3H & _MCLRE_ON_3H
@ __CONFIG _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L & _ICPRT_ON_4L & _XINST_OFF_4L

'==============================================================================
'                 SETTINGS
' ==============================================================================
        
 TRISA   = %00010110: PORTA = %00000000 
 TRISB   = %00010001: PORTB = %00010000   
 TRISC   = %00000000: PORTC = %00000001
 TRISD   = %00011100: PORTD = %00000000
 TRISE   = %00010000: PORTE = %00010111
 ADCON0  = %00111100
 ADCON1  = 15
 ADRESH  = %00000000 
 ADRESL  = %00000000
 CMCON   = 7
 SSPSTAT = %01100100      
 SSPCON1 = %00100001 
 BAUDCON = %00001111

[mackrackit]

I am not sure if this will help or if the CAN module needs it set, but try turning the ICPRT off.
@ __CONFIG _CONFIG4L, _STVREN_ON_4L & _LVP_OFF_4L & _ICPRT_ON_4L & _XINST_OFF_4L

[Christopher4187]

That gives me a code programming error at 0006. Not sure why but I'm trying to figure it out. The issue isn't with the CAN module, I've isolated the problem to the 18F4550.

[mackrackit]

Is your programmer erasing the device before loading the new code?

[Christopher4187]

That was part of my issue from the very beginning. I've used the 18F4550 for a number of projects and in all of them I used the ICSP. I've never had a problem. With these demo boards the erase always fails. I had to go into options -> more options -> erase -> and uncheck configuration/user ID and calibration. It still erases because when I hit the erase the program is wiped clean but I don't know what these two settings do.

You think this is my issue? I don't understand how the ICPRT setting affects the 18F powering up.

[mackrackit]

I have never had this problem before either and the 4550 or 2550 is what I use the most.

I normally have the MCLRE off and alway have the ICPRT off. The ICPRT is only available on the 44 pin packages and yes I use those too.

I have been reading section 25.9 of the data sheet trying to understand this.