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Additions from 21/01/2022: Changed clock speed to 16MHz, fixed issue with ADCSRA register, transmitting actual adc data through i2c, using volatile data accross project.

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Yohan Boujon 2022-04-05 20:38:09 +02:00
parent 4504b6121b
commit dff2d872cd
8 changed files with 107 additions and 55 deletions
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26
i2c_test_attiny85/i2c_test_attiny85.componentinfo.xml
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@ -9,57 +9,57 @@
<CSub></CSub>
<CVariant></CVariant>
<CVendor>Atmel</CVendor>
<CVersion>1.8.0</CVersion>
<DefaultRepoPath>D:/Programs\Atmelstudio\7.0\Packs</DefaultRepoPath>
<CVersion>1.2.0</CVersion>
<DefaultRepoPath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs</DefaultRepoPath>
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<AbsolutePath>D:/Programs\Atmelstudio\7.0\Packs\atmel\ATtiny_DFP\1.8.332\include\</AbsolutePath>
<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATtiny_DFP\1.2.118\include</AbsolutePath>
<Attribute></Attribute>
<Category>include</Category>
<Condition>C</Condition>
<FileContentHash i:nil="true" />
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<Name>include/</Name>
<Name>include</Name>
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<AbsolutePath>D:/Programs\Atmelstudio\7.0\Packs\atmel\ATtiny_DFP\1.8.332\include\avr\iotn85.h</AbsolutePath>
<AbsolutePath>C:/Program Files (x86)\Atmel\Studio\7.0\Packs\atmel\ATtiny_DFP\1.2.118\include\avr\iotn85.h</AbsolutePath>
<Attribute></Attribute>
<Category>header</Category>
<Condition>C</Condition>
<FileContentHash>T0lnJZ6iliUJCzU7ZHCMPQ==</FileContentHash>
<FileContentHash>RcYmivGpgsCGGCzeWAIjcA==</FileContentHash>
<FileVersion></FileVersion>
<Name>include/avr/iotn85.h</Name>
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<SelectString>Main file (.cpp)</SelectString>
<SourcePath></SourcePath>
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<AbsolutePath>D:/Programs\Atmelstudio\7.0\Packs\atmel\ATtiny_DFP\1.8.332\gcc\dev\attiny85</AbsolutePath>
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@ -71,8 +71,8 @@
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24
i2c_test_attiny85/led_gen.c
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@ -7,32 +7,48 @@
#include "led_gen.h"
volatile unsigned char led1_state=0;
volatile unsigned char led2_state=0;
void led1_init(void)
{
DDRB |= (1<<PB1);
TCCR1|=(1<<CTC1)|(1<<COM1A0); //on active le mode CTC en comparant OCR1C, COM1A0 : mode toggle
OCR1C=34; //d'apres retroingenieurie OCR1C=16
OCR1C=68; //d'apres retroingenieurie OCR1C=16
TCCR1|=(1<<CS10)|(1<<CS11); //on active la clock, prediv de 4
DDRB |= (1<<PB1);
led1_state=1;
}
void led2_init(void)
{
DDRB |= (1<<PB4);
GTCCR|=(1<<COM1B0); //COM1B0 : mode toggle
OCR1C=34; //d'apres retroingenieurie OCR1C=16
OCR1C=68; //d'apres retroingenieurie OCR1C=16
TCCR1|=(1<<CS10)|(1<<CS11); //on active la clock, prediv de 4
DDRB |= (1<<PB4);
led2_state=1;
}
void led1_stop(void)
{
DDRB &= ~(1<<PB1);
TCCR1 &= ~(1<<COM1A0);
led1_state=0;
}
void led2_stop(void)
{
DDRB &= ~(1<<PB4);
GTCCR &= ~(1<<COM1B0);
led2_state=0;
}
void timer0_init(void)
{
TCCR0A=0x00; //Normal mode
TCCR0B=0x00;
TCCR0B |= (1<<CS01); //prescaling with 8
TCNT0=0;
TIMSK|=(1<<TOIE0);
}

4
i2c_test_attiny85/led_gen.h
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@ -15,5 +15,9 @@ void led1_init(void);
void led2_init(void);
void led1_stop(void);
void led2_stop(void);
void timer0_init(void);
volatile unsigned char led1_state;
volatile unsigned char led2_state;
#endif /* LED_GEN_H_ */

54
i2c_test_attiny85/led_receptor.c
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@ -7,14 +7,17 @@
#include "led_receptor.h"
volatile unsigned char intr_count;
volatile unsigned char timer_flag=0;
volatile unsigned char seconde=0;
void ADC_init(void)
{
DDRB &=~(1<<PB3); //Pin B3 en entree
ADMUX |= (1<<MUX1)|(1<<MUX0)|(1<<ADLAR); //MUX = 0010 donc sortie PB4 et ADLAR a 1 pour avoir les bits de poids fort en premier
ADCSRA|= (1<<ADEN)|(1<<ADPS2)|(1<<ADIE)|(1<<ADATE); //ADEN conversion autorisee
//On divise 1Mhz par 16 (62.5 KHz) < 200 KHz
ADCSRA|= (1<<ADEN)|(1<<ADPS2)|(1<<ADPS1)|(1<<ADPS0)|(1<<ADIE); //ADEN conversion autorisee
//On divise 16Mhz par 128 (125 KHz) < 200 KHz
//Interruptions autorisees
//Auto-Trigger autorise
ADCSRB &= ~(0b111<<ADTS0); //free-running mode
sei();
};
@ -42,25 +45,42 @@ float ADC_averaging(unsigned char val_ana)
return valeur_finale;
};
float measureLed1(void)
char measureLed1(void)
{
float adcLed=69;
led1_init();
_delay_ms(TIMING);
//adcLed=ADC_averaging(ADCH);
_delay_ms(TIMING);
led1_stop();
char adcLed=0;
if(timer_flag == 1)
{
if(led1_state==0)
{
led1_init();
adcLed=ADCH;
}
else
{
led1_stop();
}
}
return adcLed;
};
float measureLed2(void)
char measureLed2(void)
{
float adcLed=69;
led2_init();
_delay_ms(TIMING);
//adcLed=ADC_averaging(ADCH);
_delay_ms(TIMING);
led2_stop();
char adcLed=0;
if(timer_flag == 1)
{
if(led2_state==0)
{
led2_init();
adcLed=ADCH;
}
else
{
led2_stop();
}
timer_flag=0;
}
return adcLed;
};

12
i2c_test_attiny85/led_receptor.h
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@ -11,7 +11,7 @@
#include "led_gen.h"
#include "usiTwiSlave.h"
#define F_CPU 8000000
#define F_CPU 16000000
#include <util/delay.h>
#include <avr/interrupt.h>
@ -21,14 +21,18 @@
#define NOTHING 0x54
#define ERROR 0xF0
#define VOLTMIN 1
#define TIMING 5
#define TIMING 10
void ADC_init(void);
void ADC_start_conversion(void);
char ADC_read_value(void);
float ADC_averaging(unsigned char val_ana);
float measureLed1(void);
float measureLed2(void);
char measureLed1(void);
char measureLed2(void);
unsigned char compareLed(float led1,float led2);
volatile unsigned char intr_count;
volatile unsigned char timer_flag;
volatile unsigned char seconde;
#endif /* LED_RECEPTOR_H_ */

38
i2c_test_attiny85/main.c
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@ -16,46 +16,52 @@
#include "led_gen.h"
#include "led_receptor.h"
#include "usiTwiSlave.h"
//#define F_CPU 1000000
#define NOM_CONSTRUC 0x08
#define NOM_CAPTEUR 0x10
#define VALEUR_DEMAN 0x49
#define BASIC_MODE 0x42
volatile unsigned char rawVal;
volatile float adcled1;
volatile float adcled2;
volatile unsigned char adcled1;
volatile unsigned char adcled2;
volatile unsigned char recVal;
/*ISR (ADC_vect){
ISR (ADC_vect){
adcled1=measureLed1();
adcled2=measureLed2();
recVal=compareLed(adcled1,adcled2);
}*/
//recVal=compareLed(adcled1,adcled2);
ADCSRA |= (1<<ADSC);
}
ISR (TIMER0_OVF_vect) //Interrupt vector for Timer0
{
if (intr_count==5) //waiting for 63 because to get 1 sec delay
{
timer_flag=1-timer_flag;
intr_count=0; //making intr_count=0 to repeat the count
}
else intr_count++; //incrementing c upto 63
}
int main( void )
{
float test1,test2;
unsigned char cmd,i=0;
unsigned char nom_capteur[8]= {'T','u','r','k','i','s','h','Z'};
unsigned char sensor_type[8]= {'C','a','t','c','h','E','y','e'};
uint8_t slaveAdress;//data = 0x45;
slaveAdress = 0x01;
MCUCR |= (1<<PUD);
//led1_init();
//led2_init();
//USI_TWI_Slave_Initialise(slaveAdress);
usiTwiSlaveInit(slaveAdress);
sei();
//ADC_init();
//ADC_start_conversion();
ADC_init();
ADC_start_conversion();
timer0_init();
while(1)
{
test1=measureLed1();
test2=measureLed2();
if( usiTwiDataInTransmitBuffer() )
{
cmd = usiTwiReceiveByte();
@ -76,11 +82,11 @@ int main( void )
break;
case VALEUR_DEMAN :
usiTwiTransmitByte(0x45/*recVal*/);
usiTwiTransmitByte(adcled1/*recVal*/);
break;
case BASIC_MODE :
usiTwiTransmitByte(0x45);
usiTwiTransmitByte(adcled1);
break;
}
}

2
i2c_test_attiny85/usiTwiSlave.c
View file

@ -228,6 +228,7 @@ Change Activity:
/* clear all interrupt flags, except Start Cond */ \
( 0 << USI_START_COND_INT ) | ( 1 << USIOIF ) | ( 1 << USIPF ) | \
( 1 << USIDC ) | ( 0x0 << USICNT0 ); \
ADCSRA=ADCSRA|(1<<ADIE)|(1<< ADEN)|(1<< ADSC); \
}
#define SET_USI_TO_SEND_DATA() \
@ -447,6 +448,7 @@ uint8_t usiTwiAmountDataInReceiveBuffer(void)
ISR( USI_START_VECTOR )
{
ADCSRA = ADCSRA & ~( (1<<ADIE)|(1<<ADEN) );
uint8_t usi_pins;
// http://www.atmel.com/webdoc/AVRLibcReferenceManual/group__avr__interrupts.html