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| - | <color red> | ||
| - | ### UNDER CONSTRUCTION ### \\ \\ | ||
| - | |||
| - | NOTE: changes have been made to the lab below. Items you no longer are required to do are shown with a <del>strikethrough</del>. | ||
| - | </color> | ||
| - | |||
| - | |||
| - | <color blue> | ||
| - | The video link for the introductory video is: [[https://expl.ai/AURBFUH| this]]. \\ \\ | ||
| - | |||
| - | This is the entire video: intro and exercises descriptions.\\ \\ | ||
| - | |||
| - | Shorter versions are embedded below. | ||
| - | </color> | ||
| - | |||
| ====== UART Transmitter ====== | ====== UART Transmitter ====== | ||
| Line 44: | Line 29: | ||
| ^ Module Name = tx ^^^^ | ^ Module Name = tx ^^^^ | ||
| + | ^ Parameter ^ Type (Default) ^^ Function ^ | ||
| ^ Port Name ^ Direction ^ Width ^ Function ^ | ^ Port Name ^ Direction ^ Width ^ Function ^ | ||
| | clk | Input | 1 | 100 MHz System Clock | | | clk | Input | 1 | 100 MHz System Clock | | ||
| Line 77: | Line 63: | ||
| ** FSM ** | ** FSM ** | ||
| - | Create the FSM as outlined in the following figure. Note, this is slightly different that the figure in the textbook, which has a small error in the BITS state. | + | Create the FSM as outlined in the following figure. Note, this is slightly different that the figure in the textbook, which as a small error in the BITS state. |
| {{ :labs:uart_tx:uart_tx_sm.png?600 |}} | {{ :labs:uart_tx:uart_tx_sm.png?600 |}} | ||
| Line 118: | Line 104: | ||
| Look at the waveform and make sure your module is operating correctly. Check the simulation that: | Look at the waveform and make sure your module is operating correctly. Check the simulation that: | ||
| - | * That the bit time you are using is correct (it needs to be precise). | + | * For each byte sent, the 8 data bits are output correctly in the correct order. |
| - | * For each byte sent, the 8 data bits are output correctly in the correct order (and there are 8 of them). | + | |
| * Check that the parity output is correct. | * Check that the parity output is correct. | ||
| * Check that the start and stop output is correct. | * Check that the start and stop output is correct. | ||
| * Check that both of your timers are operating correctly; that they reset and increment in the correct conditions. | * Check that both of your timers are operating correctly; that they reset and increment in the correct conditions. | ||
| - | **Exercise 1 Pass-off:** <del>Show a TA your waveform</del> Share your waveform with the TA in Zoom and discuss how the waveform demonstrates the above points. | + | **Exercise 1 Pass-off:** Show a TA your waveform and discuss how the waveform demonstrates the above points. |
| Line 215: | Line 200: | ||
| </file> | </file> | ||
| - | Look over the top-level file. You will see that it uses your debounce circuit from a previous lab, which ensures that when you hit the send button, only a single character is sent. The seven segment controller displays the current value of the switches to help quickly determine the hexadecimal value and compare it to an ASCII table. | + | Look over the top-level file. You will see that it uses your debouce circuit from a previous lab, which ensures that when you hit the send button, only a single character is sent. The seven segment controller displays the current value of the switches to help quickly determine the hexadecimal value and compare it to an ASCII table. |
| /* | /* | ||
| Line 251: | Line 236: | ||
| * Using another debouncer instance, debounce the 'btnd' input to create the 'reset' signal. | * Using another debouncer instance, debounce the 'btnd' input to create the 'reset' signal. | ||
| - | **Exercise 3 Pass-off:** Show a TA your top level module and explain why we need to debounce the button inputs. | + | **Exercise 3 Pass-off:** Show a TA your top level module and explain why we need to debounce the button inputs.\\ \\ |
| - | \\ \\ | + | |
| */ | */ | ||
| - | ** Exercise 3 Pass-off:** Create a Tcl file and show a single reset of the circuit followed by successful transmission of the letter 'Y'. | + | Before synthesizing your design, you will need to create an .xdc file that contains the pin locations of each port in your design. Most of the pins used in this design are the same as pins used in previous designs (buttons, switches, seven-segment display, etc.). However, you will be using a new FPGA pin to connect to the UART/USB transciever and the debug port. |
| - | + | ||
| - | <color red>Document that it was successful via one or more screen shots of the waveforms. If the simulation was so long that you cannot see sufficient detail you may take multiple screen shots of the important times and append them together into one PDF file. </color> | + | |
| - | + | ||
| - | Then, before synthesizing your design, you will need to create an .xdc file that contains the pin locations of each port in your design. Most of the pins used in this design are the same as pins used in previous designs (buttons, switches, seven-segment display, etc.). However, you will be using a new FPGA pin to connect to the UART/USB transciever and the debug port. | + | |
| The following example code demonstrates how these I/O pins can be attached to your top-level FPGA pins: | The following example code demonstrates how these I/O pins can be attached to your top-level FPGA pins: | ||
| Line 268: | Line 248: | ||
| </code> | </code> | ||
| - | After completing your .xdc file, proceed to <del>generate your bitstream</del> do synthesis and implementation. | + | After completing your .xdc file, proceed to generate your bitstream. |
| - | + | ||
| - | <color red>Attached your synthesis report. | + | |
| - | Then, provide a summary of your synthesis errors and critical warnings</color>. | + | <color red>Provide a summary of your synthesis warnings</color>. |
| - | **Exercise 3 Pass-off:** <del>There is no pass-off for this exercise.</del> This is the last exercise you need to do for this lab. Your passoff points will be determined from your Lab Writeup submission for this lab. \\ \\ | + | **Exercise 3 Pass-off:** There is no pass-off for this exercise.\\ \\ |
| ==== Exercise #4 - Download and Putty ==== | ==== Exercise #4 - Download and Putty ==== | ||
| - | <del>Once the bitstream has been generated, download your bitstream to the FPGA. To test the transmitter, you will need to run a program called "PuTTY" that is installed on your computer. Follow the [[tutorials:putty|PuTTY tutorial to set it up.]]</del> | + | Once the bitstream has been generated, download your bitstream to the FPGA. To test the transmitter, you will need to run a program called "PuTTY" that is installed on your computer. Follow the [[tutorials:putty|PuTTY tutorial to set it up.]] |
| - | <del>If your PuTTY terminal is configured properly you should be able to send characters to the terminal by selecting the [[http://www.asciitable.com/|ASCII]] value of the character to send on the switches and pressing the center button.</del> | + | If your PuTTY terminal is configured properly you should be able to send characters to the terminal by selecting the [[http://www.asciitable.com/|ASCII]] value of the character to send on the switches and pressing the center button. |
| - | <del>Interesting control commands:</del> | + | Interesting control commands: |
| - | * <del>8'h07 - Bell (a sound, not a character)</del> | + | * 8'h07 - Bell (a sound, not a character) |
| - | * <del>8'h09 - Tab</del> | + | * 8'h09 - Tab |
| - | * <del>8'h0C - Clear screen</del> | + | * 8'h0C - Clear screen |
| - | * <del>8'h0A - Move cursor down (Line Feed)</del> | + | * 8'h0A - Move cursor down (Line Feed) |
| - | * <del>8'h0D - Carriage Return</del> | + | * 8'h0D - Carriage Return |
| ===== Final Pass Off ===== | ===== Final Pass Off ===== | ||
| - | <del>To pass off this laboratory, demonstrate to the TA your working top-level transmitter circuit (the TA will test your transmitter with several characters).</del> | + | To pass off this laboratory, demonstrate to the TA your working top-level transmitter circuit (the TA will test your transmitter with several characters). |
| <color red>How many hours did you work on the lab?</color> | <color red>How many hours did you work on the lab?</color> | ||
