This example writes/reads from the lower 256 bytes of the IIC … The IIC devices that are present on the Xilinx boards donot support the Master functionality. This example writes/reads from the lower 256 bytes of the IIC EEPROMS. The transfer is cache coherent and when the transfer is complete, the CPU sees the updated OCM without invalidating or flushing the cache. However there are no functional issues seen using this core on board.

For an AXI IIC configured with an AXI Interconnect Clock of 25MHz and a SCL configured with 100KHz with no-inertial delays, make the following changes: (The following parameters will have a default value of 122), Product updates, events, and resources in your inbox. This example consists of a Interrupt mode design which shows the usage of the Xilinx iic device and XIic driver to exercise the EEPROM in Dynamic controller mode. This example writes/reads from the lower 256 bytes of the IIC EEPROMS. Please use the provided with the AXI IIC IP which works and has been tested in the Vivado environment.

This is an expected behavior with the AXI IIC controller. Reply.

Copyright © 2015 Xilinx Inc. All rights reserved. First, a write access is necessary to set the slave device address, then a repeated start follows with the read accesses: b) If the last byte is read, exit; otherwise, continue checking RX_FIFO not empty. A modified simulation testbench is attached to this Answer Record.

This example consists of a interrupt mode design to demonstrate the use of repeated start using the XIic driver. This example contains an interrupt based design which shows the usage of the Xilinx iic device and driver to exercise the temperature sensor. Product updates, events, and resources in your inbox, Clinical Defibrillators & Automated External Defibrillators, Diagnostic & Clinical Endoscopy Processing, AR# 7087: Exemplar Leonardo Spectrum v1999.1c: ngdhelpers:312 - logical block of type GND is unexpanded, AR# 70871: Understanding AXI IIC protocol - behavioral simulation use case, Set the RX_FIFO depth to maximum by setting RX_FIFO_PIRQ = 0x _ _. 1) Please note to refer to ISR interrupt(4) instead of interrupt(2) to detect the end of the last byte, and then pre-last bytes interrupts can be monitored on interrupt(2) as usual. Contains an example on how to use the XIic driver directly. Contains an example on how to use the XIic driver directly. Placed the data at the slave device address 0x6C with one data byte with START and STOP bits: Because this byte has a stop bit, it be will considered the last byte. Once this is set in the core, the SCL frequency should be 99.6 KHz, Clinical Defibrillators & Automated External Defibrillators, Diagnostic & Clinical Endoscopy Processing, AR# 6197: 2.1i FPGA Editor - FPGA Editor adds an incorrect file extension when saving designs as macros, AR# 61970: v2.0 - AXI IIC – AXI IIC example configured for SCL of 100 KHz derives a lesser frequency. This example consists of a polled mode design which shows the usage of the Xilinx iic device in dynamic mode and low-level driver to exercise the EEPROM. This example has been tested with an off board external IIC Master device and the IIC … Write 0x1D8 to the TX_FIFO (set the start bit, the device address, write access). All forum topics; Previous Topic; Next Topic; 4 Replies Highlighted. The same block RAM is also accessible by the CDMA. Restart with the wrong slave device address. This example consists of a Interrupt mode design which shows the usage of the Xilinx iic device and XIic driver to exercise the slave functionality of the iic device. This example consists of a Interrupt mode design which shows the usage of the Xilinx iic device and XIic driver to exercise the EEPROM in a multi master mode. A TX FIFO empty interrupt transfer will not be generated for it, and therefore it will assert a bus not busy interrupt.

For details, see xiic_selftest_example.c. This example only performs read operations (receive) from the iic temperature sensor of the platform. For details, see xiic_repeated_start_example.c.

0 Kudos Share. I have the thing working in so far as it actually is able to send messages, but I seem to have problems getting the interrupt system to work. The CDMA in simple mode is transferring data from the block RAM to the OCM via ACP port. However the SCL clock measured by simulation is less than 100 KHz. * @file xiic_tempsensor_example.c * * This file contains an interrupt based design example which uses the Xilinx * IIC device and driver to exercise the temperature sensor on the ML300 board. This example consists of a Interrupt mode design which shows the usage of the Xilinx iic device and XIic driver to exercise the EEPROM. * * This code assumes a loopback hardware widget is connected to the AXI DMA * core for data packet loopback. Keep a copy of the following steps and you can then edit it if you are omitting or appending any steps in your own design. The CPU initializes the block RAM. Contains an example on how to use the XIic driver directly. For details, see xiic_low_level_tempsensor_example.c. Contains an example on how to use the XIic driver directly. The XIic driver uses the complete FIFO functionality to transmit/receive data. The XIic driver uses the complete FIFO functionality to transmit/receive data. For details, see xiic_tenbitaddr_example.c. For details, see xiic_multi_master_example.c. This example writes/reads from the lower 256 bytes of the IIC EEPROMS. Read Bytes from an IIC Device Addressed as 0x_ _. b) If the last byte is read, then exit; otherwise, continue checking RX_FIFO not empty. This example writes/reads from the lower 256 bytes of the IIC EEPROMS. For details, see xiic_dynamic_eeprom_example.c. Place the data at slave device address 0x__: Read Bytes from an IIC Slave Device Addressed as 0x_ _. 2) Do not have the start and stop bits together with data/address bytes as per the IIC protocol.

This will help you to follow the programming sequence as well.

It is easy to understand the AXI IIC simulation by using pseudo steps like the following, and comparing them against the behavior you are seeing. For details, see xiic_tempsensor_example.c. I'm trying to get an i2c AXI peripheral to work on a Zynq board. For details, see xiic_low_level_dynamic_eeprom_example.c. We have configured AXI IIC for a Serial Clock (SCL) of 100 KHz. So, can anyone share the example design using AXI EMC or anyone willing to guide me. Write 0x__ to the TX_FIFO (slave address for data). * @file xaxidma_example_sg_poll.c * * This file demonstrates how to use the xaxidma driver on the Xilinx AXI * DMA core (AXIDMA) to transfer packets in polling mode when the AXIDMA * core is configured in Scatter Gather Mode.

We are trying to simulate an AXI IIC example design generated by Vivado.

Enable the AXI IIC, remove the TX_FIFO reset, and disable the general call. *

Keep a copy of the following steps and you can then edit it if you are omitting or appending any steps in your own design. The XIic driver uses the complete FIFO functionality to transmit/receive data. In this system the iic IP interrupt is hooked directly into the interrupt port of the zynq processor. When I checked the schematic, both the scl_o and sda_o lines are grounded in the ip. You can refer to the below stated example applications for more details on how to use iic driver. We would recommend following test cases 1, 2 and 3 but not 4. This example consists of a Interrupt mode design which shows the usage of the Xilinx iic device and XIic driver to exercise the 10-bit Address functionality of the iic device. It is easy to understand the AXI IIC simulation by using pseudo steps like the following, and comparing them against the behavior you are seeing. Write 0x3D8 to the TX_FIFO (set the start bit, stop bit, the device address, write access). Write Bytes to an IIC Slave Device Addressed as 0x_ _. Contains an example on how to use the XIic driver directly. Write 0x__ to the TX_FIFO (stop bit, byte x). Write 0x212 to the TX_FIFO (stop bit, last byte), Write 0x2EF to the TX_FIFO (stop bit, last byte). Write 0x___ to the TX_FIFO (set start bit, device address to 0x__, read access). Thanks. This example consists of a Interrupt mode design which shows the usage of the Xilinx iic device and XIic driver to exercise the EEPROM in Dynamic controller mode. How can we fix this issue? Contains an example on how to use the XIic driver directly. Write 0x___ to the TX_FIFO (set stop bit, four bytes to be received by the AXI IIC).

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