Hi, Here is how I do the job for a pic18f4550 using the device specs to know the hex values of the config bits:
#ifndef CONFIG_H_INCLUDED # define CONFIG_H_INCLUDED # define CONFIG(k, n) code static char at __ ## k _ ## k = n /* bits value meaning 5 0 clock comes from the primary osc block, no prescale 4-3 3 system clock postscaler (none) 2-0 0 prescaler (none) */ CONFIG(CONFIG1L, 0x10); /* bits value meaning 7 0 osc switchover mode disabled 6 0 failsafe clock mon disabled 3-0 a osc selection: internal osc used, usb use xt */ CONFIG(CONFIG1H, 0x0a); CONFIG(CONFIG2L, 0x00); /* bits value meaning 0 0 wdt disabled */ CONFIG(CONFIG2H, 0x00); /* bits value meaning 1 0 portb<4:0> are digital io 0 1 ccp2 mx with rc1 */ CONFIG(CONFIG3H, 0x01); /* bits value meaning 7 1 background debugger disabled (rb6,7 are general io pins) 6 0 extended instruction disabled */ CONFIG(CONFIG4L, 0x80); #endif /* ! CONFIG_H_INCLUDED */ On Sun, Apr 17, 2011 at 11:57 PM, Rob Connolly <rob.conno...@hmi.co.nz> wrote: > Hi Everyone, > > I'm trying to get a simple program running on one of our firms development > boards using SDCC, however I'm having problems setting the configuration > bits. The board uses a PIC18F97J60 chip. > > There seems to be some differing ways of setting these bits throughout other > posts around the internet. So far the best I've come up with is: > > __code __at 0x1FFF8 __CONFIG = _EXTCLK_OSC & _WDT_OFF & _LVP_OFF & > _DATA_CP_OFF & _PWRTE_ON; > > However, this tells me that several of the macros are not defined: > > hello_led.c:12: error 20: Undefined identifier '_EXTCLK_OSC' > hello_led.c:12: error 20: Undefined identifier '_WDT_OFF' > hello_led.c:12: error 20: Undefined identifier '_LVP_OFF' > hello_led.c:12: error 20: Undefined identifier '_DATA_CP_OFF' > hello_led.c:12: error 20: Undefined identifier '_PWRTE_ON' > > And indeed if I look in pic18f96j60.h (which is included from pic18f97j60.h) > there are no macros for configuration bits. > > So, my question is, what is the best way to go about this? > > Thanks in advance, > > Rob Connolly, BE > HMI Technologies Ltd. > ------------------------------------------------------------------------------ > Benefiting from Server Virtualization: Beyond Initial Workload > Consolidation -- Increasing the use of server virtualization is a top > priority.Virtualization can reduce costs, simplify management, and improve > application availability and disaster protection. Learn more about boosting > the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev > _______________________________________________ > Sdcc-user mailing list > Sdcc-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sdcc-user > ------------------------------------------------------------------------------ Benefiting from Server Virtualization: Beyond Initial Workload Consolidation -- Increasing the use of server virtualization is a top priority.Virtualization can reduce costs, simplify management, and improve application availability and disaster protection. Learn more about boosting the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
