alan
Joined: 12 Nov 2012
Posts: 357
Location: South Africa
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| #FUSES NOOSCIO |
 Posted: Tue May 13, 2014 5:05 am |
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dsPIC33EP32MC202
CCS 5.024
I am going crazy here.
If you include #FUSES NOOSCIO and use the FRC what do you get out at the OSC2 pin? The Fosc or Fcy?
I have setup the Fosc as 80Mhz, gone through the registers, which looks right to me.
But I am getting a frequency of 40MHz out of the OSC2 pin. Also by using the code below the Tcy are 50ns corresponding to 40MHz instead of the 25ns expected.
| Code: |
while (TRUE) {
output_high(LED);
output_low(LED);
output_high(LED);
output_low(LED);
output_high(LED);
output_low(LED);
output_high(LED);
output_low(LED);
output_high(LED);
output_low(LED);
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I have the following fuses
| Code: |
#FUSES NOWDT //No Watch Dog Timer
#FUSES NOIESO //Internal External Switch Over mode disabled
#FUSES NOOSCIO //OSC2 is general purpose output
#FUSES NOCKSNOFSM //Clock Switching is disabled, fail Safe clock monitor is disabled
#FUSES NOWINDIS //Watch Dog Timer in Window mode
#FUSES NOJTAG //JTAG disabled
#use delay(internal=80MHz)
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I also tried using the
| Code: |
setup_oscillator(OSC_INTERNAL,80000000);
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with no difference in the outputs.
Regards |
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