on7nh
Joined: 05 Jun 2006
Posts: 41
Location: Belgium
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 Posted: Sun Jan 25, 2009 5:56 am |
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i have now communication,
my master code :
| Code: |
// DS_plasma voeding date 07/12/2008
#include <30f4013.h>
#device adc=12
#FUSES NOWDT // Watch Dog Timer
#FUSES HS2_PLL16
#FUSES PR_PLL //Promiary Oscillator
#FUSES NOCKSFSM //Clock Switching is disabled, fail Safe clock monitor is disabled
#FUSES BROWNOUT //Reset when brownout detected
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOWRT //Program memory not write protected
#FUSES DEBUG //No Debug mode for ICD
#FUSES ICS0 //ICD communication channel 0
#use delay(clock=128000000)
#use rs232(baud=19200, UART1A)
#use i2c(Master,sda=PIN_F2,scl=PIN_F3,FORCE_SW,SLOW) // hw I2C
#include <math.h>
void main(void)
{
setup_adc_ports(ALL_ANALOG);
setup_adc(adc_clock_internal);
printf("test\n");
Prnt_display();
while(TRUE)
{
// Inlezen Potentiometer Freq
set_adc_channel(0);
delay_ms(10);
freq=read_adc();
// Inlezen Potentiometer Power
set_adc_channel(1);
delay_ms(10);
// dutycyl=read_adc();
power=read_adc();
// Inlezen Gemeten Spanning
set_adc_channel(2);
delay_ms(10);
// dutycyl=read_adc();
MeasU=read_adc();
// Inlezen Gemeten Stroom
set_adc_channel(3);
delay_ms(10);
// dutycyl=read_adc();
MeasI=read_adc();
Prnt_display();
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void Prnt_display()
{
//write ingestelde frequentie
i2c_stop();
i2c_start();
i2c_write(0xb0);
i2c_write(200);
i2c_write(205);
i2c_write(104);
i2c_stop();
}
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code slave :
| Code: |
// DS_plasma voeding date 07/12/2008
#include <30f4013.h>
#device adc=12
#FUSES NOWDT // Watch Dog Timer
#FUSES HS2_PLL16
#FUSES PR_PLL //Promiary Oscillator
#FUSES NOCKSFSM //Clock Switching is disabled, fail Safe clock monitor is disabled
#FUSES BROWNOUT //Reset when brownout detected
#FUSES NOPROTECT //Code not protected from reading
#FUSES NOWRT //Program memory not write protected
#FUSES DEBUG //No Debug mode for ICD
#FUSES ICS0 //ICD communication channel 0
#use delay(clock=128000000)
#use rs232(baud=115200, UART1A)
#use i2c(SLAVE, SDA=PIN_F2, SCL=PIN_F3, address=0xb0)
#include <math.h>
////////////////////////////////////////////////////////////////////////////////////////////////////
unsigned int16 measU, measI;
unsigned int16 Power, bargraph;
unsigned int16 freq;
unsigned int dyc;
void Prnt_display();
int16 keyw;
int incoming, state;
BYTE B1, B2, B3, B4;
float dutycyl;
////////////////////////////////////////////////////////////////////////////////////////////////////
#INT_SI2C
void SI2C_interupt ()
{
state = i2c_isr_state();
//printf("state %u\n\r ",state);
if(state <= 0x80) //Master is sending data
{
incoming = i2c_read();
if(state == 1)
b1 = incoming;
printf("Inc1 %u\n\r ",incoming);
if(state == 2)
b2 = incoming;
printf("Inc2 %u\n\r ",incoming);
if(state == 3)
keyw = incoming;
printf("Inc3 %u\n\r ",incoming);
// toekennen i2c data
if(keyw == 101)
{
power = make16(b2,b1);
keyw = 0;
}
if(keyw == 102)
{
MeasU = make16(b2,b1);
keyw = 0;
}
if(keyw == 103)
{
MeasI = make16(b2,b1);
keyw = 0;
}
if(keyw == 104)
{
Freq = make16(b2,b1);
//printf("Inc %u\n\r ",incoming);
// printf("I2c freq %u\n\r ",freq);
keyw = 0;
}
if(keyw == 105)
{
bargraph = make16(b2,b1);
keyw = 0;
}
}
if(state == 0x80) //Master is requesting data
{
// i2c_write(buffer[address]);
}
}
/////////////////////////////////////////////////////////////////////////////////////
void main(void)
{
char selection;
setup_compare(1, COMPARE_PWM | COMPARE_TIMER2);
setup_adc_ports(NO_ANALOGS);
// setup_adc(adc_clock_internal);
enable_interrupts(intr_GLOBAL);
enable_interrupts(int_SI2C);
enable_interrupts(int_MI2C);
dutycyl = 10;
while(TRUE)
{
dutycyl = freq;
setup_timer2(TMR_INTERNAL | TMR_DIV_BY_1, 2000);
//dutycyl = 1000;
dyc =(ceil(2000-(2000*dutycyl/4000)));
// printf("dyc %u freq %u\n\r "dyc,freq);
set_pwm_duty(1,dyc); // This sets the time the pulse is
}
}
////////////////////////////////////////////////////////////////////////////////////////////////////
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After the I2C_read command I print now for debugging,
address is 0Xb0 because there is also another slave with address 0xa0 (pic18f452)
Isr_state is incrementing every time I write to the slave.
but I receive always 255 in I2C_read.
Any suggestions?
ps to CCS.....why is in the PCD manual still wrong about the interrupts ?
Int_SSP is not possible in 30F  ..... |
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