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Nope, I didnt directly jump into complicated.
Because I having some errors when I do simulation in ISIS by adjusting the config bits of my project oscillator.
I use proteus simulation to try see the graph result but there isnt any outputs.
In my code, I didnt put any codes inside, by plainly set out config settings into RC mode.
To set the clock frequency on a MCU in Proteus, right click on the MCU in the design and select "Edit Properties" and simply enter the correct frequency in the "Processor Clock Frequency" form slot.
Proteus does not seem to require any oscillator circuitry in the design as long as the entered value is correct.
To set the configuration bits in MikroC for an internal oscillator, simply click on the "Oscillator Selection" menu and select "INTOSC - RA6 as I/O, RA7 as I/O".
To set the clock frequency on a MCU in Proteus, right click on the MCU in the design and select "Edit Properties" and simply enter the correct frequency in the "Processor Clock Frequency" form slot.
Proteus does not seem to require any oscillator circuitry in the design as long as the entered value is correct.
To set the configuration bits in MikroC for an internal oscillator, simply click on the "Oscillator Selection" menu and select "INTOSC - RA6 as I/O, RA7 as I/O".
I want ask another thing. How do I use internal clock and output to SCLK (RC3 - MMC's pin).
Is it related to timer module from PIC18F4520's datasheet ?
The MMC library adds FAT File System functionality to the SD interface with SPI bus.
One other issue I should mention, the MikroC's MMC Library only functions correctly with a SD card which has formatted with FAT16. It will not function with FAT12 or FAT32 according to their documentation.
The PIC18F4520' MASTER SYNCHRONOUS SERIAL PORT (MSSP) module and MikroC SPI library take care of most of the details of implementing a SPI bus.
The following function call setups up the SPI clock line in the MSSP module.
The MMC library adds FAT File System functionality to the SD interface with SPI bus.
One other issue I should mention, the MikroC's MMC Library only functions correctly with a SD card which has formatted with FAT16. It will not function with FAT12 or FAT32 according to their documentation.
I'm using Windows 7 ultimate.
What's SD utility ?
And for MikroC oscillator selection menu, didnt shows "INTOSC - RA6 as I/O, RA7 as I/O"; only shows "internal oscillator block on port RA6 and RA7".
A utility which can format the SD in a specific format. I use several Linux or Cygwin utilities when installing an Embedded OS on SD/MMC cards, due to the fact they must be bootable and formatting is critical.
I have read the datasheet PIC18f4520 which shown below:
Ok, thank you for utilities introduction.
From above description, it seem internal block oscillator is different from RC oscillator.
Does my understanding correct ?
Ok, thank you for verification.
Erm I have set my MikroC oscillator setting to "internal oscillator block on port RA6 and RA7".
When I run the proteus, I got error simulation which is shown below:
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