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PIC24F64GA002

 
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GLADKIH_UA
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PIC24F64GA002
PostPosted: Thu Jan 21, 2010 2:06 pm     Reply with quote
Hello people. Sorry by my language - I'm from Ukraine. I have a question. I want to have 32Mhz in this PIC.
Code:

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES NOJTAG                   //JTAG disabled
#FUSES NOPROTECT                //Code not protected from reading
#FUSES NOWRT                    //Program memory not write protected
#FUSES NODEBUG                  //No Debug mode for ICD
//#FUSES NOCOE                    //Device will reset into operational mode
#FUSES ICSP1                    //ICD uses PGC2/PGD2 pins
#FUSES WINDIS                   //Watch Dog Timer in non-Window mode
#FUSES WPRES128                 //Watch Dog Timer PreScalar 1:128
#FUSES WPOSTS16                 //Watch Dog Timer PostScalar 1:32768
#FUSES IESO                     //Internal External Switch Over mode enabled
#FUSES FRC_PLL                  //Internal Fast RC oscillator with PLL
#FUSES NOCKSFSM                 //Clock Switching is disabled, fail Safe clock monitor is disabled
#FUSES OSCIO                    //OSC2 is general purpose output
#FUSES NOPR                     //Pimary oscillater disabled
#FUSES I2C1SELd     
#use delay(clock=32000000)

Before programming I see that frequency is not 32Mhz. She is 16Mhz or something like that.
Please help me. And I have question about #Fuses. Where can I read about every #Fuses of this series PIC24F.
FvM



Joined: 27 Aug 2008
Posts: 2337
Location: Germany

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PostPosted: Thu Jan 21, 2010 3:24 pm     Reply with quote
You find all fuses details in the Microchip datasheet of the respective chip, in the Special Features/Configuration
Bits paragraph. In addition you should always read the oscillator configuration chapter to understand
the clocking options and configuration parameters of the chip.

I didn't use PIC24 with FRC_PLL yet, but as far as I understand, the fuses are basically correct. The CLKDIV
register RCDIV bits are however defaulting to a divider factor of 2, so you get 16 MHz after PLL. CCS C
has a setup_oscillator() built-in function to set among others CLKDIV register.

Unfortunately, I can't tell you the correct parameters for your setting. If it can't be derived from the given documentation,
I would most likely program the register directly.
gladkih
Guest
PostPosted: Fri Jan 22, 2010 8:57 am     Reply with quote
FvM wrote:
You find all fuses details in the Microchip datasheet of the respective chip, in the Special Features/Configuration
Bits paragraph. In addition you should always read the oscillator configuration chapter to understand
the clocking options and configuration parameters of the chip.

I didn't use PIC24 with FRC_PLL yet, but as far as I understand, the fuses are basically correct. The CLKDIV
register RCDIV bits are however defaulting to a divider factor of 2, so you get 16 MHz after PLL. CCS C
has a setup_oscillator() built-in function to set among others CLKDIV register.

Unfortunately, I can't tell you the correct parameters for your setting. If it can't be derived from the given documentation,
I would most likely program the register directly.

thanks for answer.
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