Microblaze 16x2 LCD Driver
Posted on October 18, 2008
| Jeff Johnson
Tutorial Overview
In this example, we will develop a driver for the 16x2 character LCD on the ML505/6/7 board. The LCD driver will be mostly a Microblaze design, as opposed to being an IP design. The physical interface to the LCD will be made through a GPIO peripheral. The signal timing requirements of the LCD will be achieved by using a Timer peripheral. The functions contained in the software application will control what is shown on the LCD.
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Timer with Interrupts
Posted on October 18, 2008
| Jeff Johnson
Tutorial Overview
In this tutorial we will add code to a peripheral template generated by the Peripheral Wizard to create a simple timer. The peripheral will generate an interrupt when the timer expires. The Microblaze will process the interrupt through an interrupt handler function which gets called whenever the interrupt occurs. In this example, we will make the LEDs flash by using the interrupt handler function to switch the state of the LEDs and reset the timer.
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Timer with Interrupts
Posted on April 2, 2008
| Jeff Johnson
Overview
In this tutorial we will improve on the Timer peripheral developed in Create a Simple Timer Peripheral. The improvement is achieved by enabling the peripheral to generate an interrupt when the timer expires. The PowerPC then processes the interrupt through an interrupt handler function which gets called whenever the interrupt occurs. In this example, the interrupt handler function will switch the state of the LEDs and reset the timer.
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Aurora Transceiver for the PLB
Posted on April 1, 2008
| Jeff Johnson
Overview In this tutorial we will create a peripheral containing the Aurora core to implement a high speed serial transceiver with a RocketIO MGT. It will be an improved version of the Aurora transceiver developed in the tutorial titled Create an Aurora Transceiver. The improvement is achieved by connecting the peripheral to the PLB rather than the OPB, which allows much faster data transfer by virtue of a wider bus and Direct Memory Access capability.
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Create an Aurora Transceiver
Posted on March 19, 2008
| Jeff Johnson
Overview In this tutorial we will create a peripheral containing the Aurora core to implement a high speed serial transceiver with a RocketIO MGT. The peripheral can be used to connect two XUPV2P boards using the SATA connectors and transfer data between them at 1.5Gbps. To test the design using only one XUPV2P board, we will instantiate two Aurora peripherals, assign them to different RocketIO MGTs and place a SATA cable between them to create a loop-back connection.
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Create an Oscillator with a RocketIO MGT
Posted on February 14, 2008
| Jeff Johnson
Overview
In this tutorial we will use a RocketIO MGT for possibly its simplest application, a programmable oscillator. This can be achieved by feeding the MGT with a repetitive data pattern (e.g. “10101010101010101010”). By changing the data pattern we can adjust the output frequency and duty cycle.
Figure: The Oscillator peripheral
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The diagram above illustrates the oscillator peripheral. In it we use 4 registers to store a 4 x 32 bit repeating pattern to be fed to the RocketIO primitive (GT_CUSTOM).
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Integrating a VHDL Design into a Peripheral
Posted on February 11, 2008
| Jeff Johnson
Overview
This tutorial is similar to the previous one titled: Integrating a Blackbox into a Peripheral however in this case, instead of integrating an .ngc file into a peripheral, we integrate one or more VHDL files. Sometimes we have a VHDL design that we developed in ISE, or some other program, and we would like to bring it into the EDK as a peripheral. In this tutorial, we will create the same multiplier peripheral as was created in the previous tutorial.
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Create a Simple Timer Peripheral
Posted on February 8, 2008
| Jeff Johnson
Overview
In this project, we will add code to a peripheral template generated by the Peripheral Wizard to create a simple timer. The timer peripheral will be used by the PowerPC to make the LEDs flash with a fixed period.
Figure: The Timer peripheral
The timer will use two registers, one to store the delay period and the other for starting, stopping and checking if the timer has expired. We will call the first register the delay register and the second register the control register.
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Integrating a Blackbox into a Peripheral
Posted on February 8, 2008
| Jeff Johnson
Overview
Sometimes we have an .ngc file from CORE Generator (or some other source) that we would like to bring into EDK as a peripheral. This project is a simple example of integrating a blackbox design into a peripheral generated by the Peripheral Wizard. We will first create a blackbox multiplier using the Xilinx CORE Generator and then we will use the generated .ngc file in our peripheral.
The multiplier will take in two 16 bit unsigned inputs and have a 32 bit unsigned output.
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XPS Software
Posted on February 7, 2008
| Jeff Johnson
Version
Most of the projects on this website are built using Xilinx Platform Studio EDK.
Navigation
The image below illustrates the locations of a few features that are mentioned in the tutorials.
Figure: XPS Screenshot
