SDK の xiic_eeprom_example.c を使用して AXI IIC バスを実行すると、2017.4 リリースでエラーが発生します。 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. 30:26. For simplicity in this example, ignore source/dest clock skew, latency, FF tco (clock to Q-out), FF tsu (setup time), and FF th (hold time). Xilinx Vivado Tutorial:1 (Basic Flow ) - Duration: 30:26. The above code is xilinx code for iic of my board. As far as I can tell I've set up the PL correctly, enabling I2C 0 and connecting it to pins 50 and 51. Hi @david.600, . You mentioned that there is no toggling, are the lines stuck logic high or low? VLSI Techno 49,480 views. AXI IIC Bus Interface v LogiCORE IP Product Guide (PG090) – Xilinx.
Solved: iic example for microblaze – Community Forums – Xilinx Forums. I also attached the main file of my Project.
The I2C bus is a simple way to connect multiple chips together, in particular FPGAs/CPLDs. Hi.
Xilinx – Linux I2C Driver file i2ctest.
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.First, a write access is necessary to set the slave device address, then a repeated start follows with the read accesses:As per the IIC protocol we do not recommend having a byte with both a start and stop bit together in it.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.b) If the last byte is read, then exit; otherwise, continue checking RX_FIFO not empty.Alternatively just fill in whichever are applicable for your test case.The data is at slave address 0x _ _. Placed the data at slave device address 0x6C with one data byte:The example cases are explained below:Below are some recommended example programming sequences as per the AXI IIC product guide (PG090).Please use the provided with the AXI IIC IP which works and has been tested in the Vivado environment.Place the data at slave device address 0x__:A modified simulation testbench is attached to this Answer Record.Placed the data at the slave device address 0x6C with two data bytes:b) If the last byte is read, exit; otherwise, continue checking RX_FIFO not empty.Placed the data at slave device address 0x6C with two data bytes.
In the PS, I'm using the iicps_v3_3 driver built into libxil.a. (Xilinx Answer 67400) AXI IIC Software Driver v3.2 - AXI IIC Software Driver v3.2 Patch Download
We have found much more success that way.Whoops, sorry: one line is held low (SCL), and the other is high (SDA).I2C protocol requires an external pull-up resistor on each of SDA and SCL lines to allow the transitions from 0 logic state to 1 logic state. (Xilinx Answer 61970) AXI IIC example configured for SCL of 100 KHz derives a lesser frequency (Xilinx Answer 46726) How to determine the frequency of SCL?
I would look at our vivado library here.We have IP cores that use spi, I2c, uart and gpio.
I dont know what else I am doing wrong. What type of pull-up resistor values are you using on pins 50 and 51 on your PicoZed Carrier card design?Yes, I have looked through those already; they didn't provide me with any ideas what I'm doing wrong.Turns out I had some code hidden away that was re-purposing pin 50 out from under me. Hope this helps ! IIC programming for microblaze – Forum for Electronics This function writes a buffer of bytes to the IIC chip. Alternatively just fill in whichever are applicable for your test case. This code: 984f13 The URL of … When I attempt to send a couple of bytes If clock frequency was 100 MHz = 10 ns period, and the combi logic cloud X took 10ns to propagate through, then data could be captured fine within a single clock cycle.
Try refreshing the page. Whereas the psiic driver is intended to be used with the Zynq-7000 or Zynq-UltraScale's built-in IIC controller's. The EeproReadByte is from the Xilinx IIC example and it work for the ADV7511. Restart with the wrong slave device address.This will help you to follow the programming sequence as well.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.We would recommend following test cases 1, 2 and 3 but not 4.Because this byte has a stop bit, it be will considered the last byte.
OPTION supported_peripherals = (ps7_iic psu_i2c); In summary, the iic driver is intended to be used with the AXI_IIC core, the IIC controller implemented in the programmable logic.
An overview on I2C; An example of I2C slave (method 1); An example of I2C slave (method 2) DS756 June 22, 2011 www.xilinx.com 3 Product Specification LogiCORE IP AXI IIC Bus Interface (v1.01a) Multi-Master Operation The AXI IIC only participates in multi-master arbitration when the bus is initially free and the attempt is made.
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. I'm trying to get the I2C functionality going in my application (running on a picozed). I2C project. I just had just set the main IIC mux to HDMI but since the FMC hasn't a mux it must be set directly. VIVADO HLS Training - AXI Lite slave floating point #5 - Duration: 35:34. If you look towards the bottom of this website here we have out pmods listed with what communication they use. Refresh. If the problem persists, contact Atlassian Support or your space admin with the following details so they can locate and troubleshoot the issue:. Mario.
All set now.Can you describe what you see on the SDA and SCL lines? I'm calling the methods pretty much exactly as is done in the supplied example.