Client Transmission (7-bit
Address)
#include <xc.h>
#define mCLIENT_ADDRESS 0x4C
#define INIT 1
#define ADDRESS_PHASE 2
#define DATA_READ 3
volatile unsigned char gReceived[20], gRcv_count, gTrans_count, count = 0;
int main(void) {
/*Configure I2C pins as digital*/
/*I2C1 configured as client*/
I2C1ADD = mCLIENT_ADDRESS; // Configure Client address
I2C1INTCbits.CADDRIE = 1; // Assert CLTIF on address detect
I2C1INTCbits.CDRXIE = 1; // Assert CLTIF on received byte
I2C1INTCbits.CDTXIE = 1; // Assert CLTIF on transmit byte
I2C1INTCbits.CLTIE = 1; // Assert I2CxIF when CLTIF is asserted
I2C1CON2bits.SMEN = 1; // Enable smart mode
I2C1CON2bits.PSZ = 10; // Packet size
I2C1CON1bits.ON = 1; // Enable I2C
IFS2bits.I2C1IF = 0; // Clear I2C general interrupt
IEC2bits.I2C1IE = 1; // Enable I2C general interrup
while (1) {
}
}
void __attribute__((__interrupt__, no_auto_psv)) _I2C1Interrupt(void) {
IFS2bits.I2C1IF = 0;
/* Read received address*/
if ((I2C1STAT1bits.RBF)&& (!I2C1STAT1bits.D_A)) {
gTrans_count = 0;
gRcv_count = 0;
gReceived[gRcv_count] = I2C1RCV;
gRcv_count++;
}/* Read received data byte*/
else if ((I2C1STAT1bits.RBF)&& (I2C1STAT1bits.D_A)) {
gReceived[gRcv_count] = I2C1RCV;
gRcv_count++; // Read received data
}
/* transmit byte if R_W is set */
if ((I2C1STAT1bits.R_W) &&(!I2C1STAT1bits.ACKSTAT)) {
I2C1TRN = gTrans_count++; // transmit data
}
}
s
