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Hi Everybody, I'm experimenting with Infineon's XC161CJ-controller on an Infineon SK-XC16x starter kit. Most of my routines work now, except the I2C-routines. Sending of data works OK, but the errors occur when I want to receive data. Has anybody on this forum written I2C-routines for this controller? And if so, are you willing to share them? Thanks in advance. :) Kind Regards, Dennis Ebben
Hi Henrik This is the software I finally succeed. I don't remmember exactly what I did but here you have it Best Regards Lluìs //========================================================== // void I2C_vEndTrans () { I2C_vGenStopCond (); // Generate Stop (Clear BUM) I2C_ubResetStatus (I2C_IRQD | I2C_IRQP | I2C_IRQE); // Clear IRQD, IRQP, IRQE while (I2C_uwGetStatus () & I2C_BB); // Wait for Idle Bus } //========================================================== // ubyte I2C_ubCheckEnd () { delay (1); while ((I2C_uwGetStatus () & I2C_IRQD) == 0x0000); // Wait for end of TX (IRQD) if (I2C_uwGetStatus () & I2C_LRB) return 1; // Check for ACK (LRB) return 0; } //========================================================== // void I2C_vWaitRx () { delay (1); while ((I2C_uwGetStatus () & I2C_IRQD) == 0x0000); // Wait for end of RX (IRQD) } //========================================================== // ubyte I2C_EEPRD (uword add, uword *dat) { if (I2C_uwGetStatus () & I2C_BB) return EEP_BUSY; // Check if Bus is busy (BB) I2C_ubResetStatus (I2C_AL | I2C_IRQD | I2C_IRQP | I2C_IRQE); // Reset Status Register add <<= 1; // Convert address of word to address of byte I2C_vGenStartCond (); // Generate Start (Set BUM) START I2C_vWriteData ((EEPDEVADD << 1) | WRBIT); // Write Slave Address and WR CONTROL WRITE if (I2C_ubCheckEnd ()) {I2C_vEndTrans (); return EEP_NOTOK;} // Check for ACK ACK I2C_vWriteData (HIGHBYTE (add)); // Write Address (High Byte) ADDRESS HIGH if (I2C_ubCheckEnd ()) {I2C_vEndTrans (); return EEP_NOTOK;} // Check for ACK ACK I2C_vWriteData (LOWBYTE (add)); // Write Address (Low Byte) ADDRESS LOW if (I2C_ubCheckEnd ()) {I2C_vEndTrans (); return EEP_NOTOK;} // Check for ACK ACK I2C_vGenRSC (); // Repeated Start (Set RSC) START I2C_vWriteData ((EEPDEVADD << 1) | RDBIT); // Write Slave Address and RD CONTROL READ if (I2C_ubCheckEnd ()) {I2C_vEndTrans (); return EEP_NOTOK;} // Check for ACK ACK I2C_vSetDataDirRx (); // Disable (Tx (Clear TRX) I2C_vEnableACK (); // ACK for all bytes except last one I2C_uwReadData (); // Start Rx Clock I2C_vWaitRx (); // Wait Low Byte received I2C_vDisableACK (); // NACK for last byte I2C_vStopAfterTransmission (); // Generate Stop after Rx (Set STP) *dat = I2C_uwReadData (); // Read Low Data Byte and Start new Rx Clock I2C_vWaitRx (); // Wait High Byte Received *dat |= I2C_uwReadData () << 8; // Read High Data Byte I2C_vEndTrans (); // Wait End transmission return EEP_OK; // Done } //========================================================== // ubyte I2C_ubAckPoll () { ubyte i, s; s = 1; for (i = 0; i < 20; i++) { I2C_vGenStopCond (); // Generate Stop (Clear BUM) delay (2000); // don't stress the 24LC256 I2C_vGenStartCond (); // Generate Start (Set BUM) I2C_vWriteData ((EEPDEVADD << 1) | WRBIT); // Write Slave Address and WR if (!I2C_ubCheckEnd ()) {s = 0; break;} // If ACK then writing is done } return s; } //========================================================== // ubyte I2C_EEPWR (uword add, uword *dat, ubyte cnt) { ubyte i; if (!cnt) return EEP_OK; // Nothing to write if (I2C_uwGetStatus () & I2C_BB) return EEP_BUSY; // Check if Bus is busy (BB) I2C_ubResetStatus (I2C_AL | I2C_IRQD | I2C_IRQP | I2C_IRQE); // Reset Status Register add <<= 1; I2C_vGenStartCond (); // Generate Start (Set BUM) I2C_vWriteData ((EEPDEVADD << 1) | WRBIT); // Write Slave Address and WR if (I2C_ubCheckEnd ()) {I2C_vEndTrans (); return EEP_NOTOK;} // Check for ACK I2C_vWriteData (HIGHBYTE (add)); // Write Address (High Byte) if (I2C_ubCheckEnd ()) {I2C_vEndTrans (); return EEP_NOTOK;} // Check for ACK I2C_vWriteData (LOWBYTE (add)); // Write Address (Low Byte) if (I2C_ubCheckEnd ()) {I2C_vEndTrans (); return EEP_NOTOK;} // Check for ACK for (i = 0; i < cnt; i++) // For each data byte { I2C_vWriteData (LOWBYTE (*dat)); // Write Low Data Byte if (I2C_ubCheckEnd ()) {I2C_vEndTrans (); return EEP_NOTOK;} // Check for ACK I2C_vWriteData (HIGHBYTE (*dat)); // Write High Data Byte if (I2C_ubCheckEnd ()) {I2C_vEndTrans (); return EEP_NOTOK;} // Check for ACK } if (I2C_ubAckPoll ()) {I2C_vEndTrans (); return EEP_NOTOK;} // Check Acknowledge polling I2C_vEndTrans (); // Wait End transmission return EEP_OK; // Done }
Hi Everyone, I am having trouble also reading a 24LC04B/P connected to XC167-32 via the I2C. Is it possible for someone to send me the driver that has been bouncing around Europe down here to Australia. mark.bozovic[at]dtsysint[dot]com Danker/Tack/Gracias/Hvala Mark..
Hi, Am working with XC167CI-16F, am trying to read sonar sensors SRF08 via I2C bus, and I used the code used for eeprom in keil's website but I still have problem that I cant read this sensor while I need to read it ... I dont want to write on it ... at least I need to read that sonar... Please help me and thanks.. I.J
I am working with an XC167 PhyCore module in a battery management system for an electric vehicle and have the same problem. The KEIL code is very close to accurate. The waveforms on the output look correct during write, however read hangs after the first byte.
Does anyone have a working low-level driver for the XC167 IIC module? Or maybe just an explanation of the sequence you go through to send and receive bytes with the IIC?
Thanks in advance.
Terry Hansen AEV
I have a project (XC167) that I created some time ago to communicate via I2C to a SRF08 sensor (polled) and then send the results out the serial port. If interested post your email address and I will send it to you.
-Chris
Great!
terry.hansen@aevehicles.com
Thanks for the help.