Hey,
Im working in this PIC and trying to get my MOSI pins working as I have this connected into MCP2515 chip acting as the Slave. (The moral of my question below is how to slow down the SPI data out MOSI pin)
I have a code developed and I have a output of 5 volts on my CLK, on the oscilloscope I have the EXT Trigger connected to my chip select. But i am not getting a correct data reading from my data out pin, i have changed the binary number and it still give me the same distorted output, which is not interference so it is trying to give me something. I think maybe if i slow down the clock it will work, i can only slow down the whole PIC which is not what i want, anyone know how to slow down just the SPI mode data output?
Il send some code to explain what I have
Im working in this PIC and trying to get my MOSI pins working as I have this connected into MCP2515 chip acting as the Slave. (The moral of my question below is how to slow down the SPI data out MOSI pin)
I have a code developed and I have a output of 5 volts on my CLK, on the oscilloscope I have the EXT Trigger connected to my chip select. But i am not getting a correct data reading from my data out pin, i have changed the binary number and it still give me the same distorted output, which is not interference so it is trying to give me something. I think maybe if i slow down the clock it will work, i can only slow down the whole PIC which is not what i want, anyone know how to slow down just the SPI mode data output?
Il send some code to explain what I have
Rich (BB code):
#include "p18f4620.h"
#include "spi.h"
#pragma config OSC = INTIO67 // Sets the oscillator mode to HS
#pragma config WDT = OFF // Turns the watchdog timer off
#pragma config MCLRE = OFF // Turns low voltage programming off
void configure_pins(void);
unsigned int read_analog_channel(unsigned int n);
int Count;
void main(void)
initSPI();
Count = 0;
while(1)
{
LATDbits.LATD1 = 1;
LATDbits.LATD0 = 0;
void configure_pins()
TRISA = 0xFF;
ADCON1 = 0b00000111;
LATD = 0;
TRISD = 0b11110000;
LATC = 0;
TRISC = 0b11110000;
}
unsigned int read_analog_channel(unsigned int n)
{
// Set ADCON0 to specified channel, unset GO/NOTDONE bit, unset ADON bit
ADCON0 = n << 2;
// Select A/D acquisition time (NOT DONE YET - JUST DELAYING MANUALLY FOR NOW, SEE BELOW)
// Select A/D conversion clock (NOT DONE YET - JUST DELAYING MANUALLY FOR NOW, SEE BELOW)
// Turn on A/D module
ADCON0bits.ADON = 1;
// Manual wait acquisition time (should be more than enough)
for (n=0 ; n<100 ; ++n);
// Start conversion
ADCON0bits.GO = 1;
// Wait for conversion to finish
while (ADCON0bits.GO);
// Just return 8 MSBs of left justified sample from ADRESH:ADRESL
return ADRESH;
}
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