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10MHz -> 20MHz

 
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cerr



Joined: 10 Feb 2011
Posts: 241
Location: Vancouver, BC

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10MHz -> 20MHz
PostPosted: Thu May 26, 2011 11:59 am     Reply with quote
Hi,

My hardware changed from 18F87K22 to 18F86K22 and from 10MHz to 20MHz clock speed.
I have altered my fuses like this:
Code:

#include <18F86K22.h>
#case
#device adc=16 HIGH_INTS=TRUE

#fuses WDT1024,WDT_SW                //Watch Dog Timer uses 1:65536 Postscale
#fuses HSH                          //Hi-Speed crystal oscillator
#fuses NOBROWNOUT                  //No brownout reset
#fuses NOPLLEN                  //No PLL enabled
#fuses BBSIZ1K                     //1K words Boot Block size
#fuses NOXINST                     //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
#fuses PROTECT
#define MCU1_RX PIN_C7
#define MCU1_TX PIN_C6
#define PC_RX PIN_G2
#define PC_TX PIN_G1
#define BAUDRATE 9600

#use delay(clock=20000000)

But I keep getting weird/wrong characters in my serial terminal, why would that be?
In my *.lst I got this
Code:

Configuration Fuses:
   Word  1: C21D   VREGSLEEP INTRC_HP SOSC_HIGH NOXINST HSH NOPLLEN FCMEN IESO
   Word  2: 2A78   PUT NOBROWNOUT BORV18 ZPBORM WDT_SW WDT1024
   Word  3: 8BF9   RTCOSC_T1 EXTADDRSFT ABW20 BW16 NOWAIT CCP2C1 ECCPE MSSPMSK7 MCLR
   Word  4: 0081   STVREN BBSIZ1K NODEBUG
   Word  5: C000   PROTECT NOCPB NOCPD
   Word  6: E00F   NOWRT NOWRTC NOWRTB NOWRTD
   Word  7: 400F   NOEBTR NOEBTRB


Thanks for hints and suggestions!
Ron
cerr



Joined: 10 Feb 2011
Posts: 241
Location: Vancouver, BC

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[SOLVED] 10MHz -> 20MHz
PostPosted: Thu May 26, 2011 3:20 pm     Reply with quote
Figured it out, just had USART1 & 2 confused in my #use rs232 lines where i force it to use the hardware USARTs. All good now. Smile
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