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learn:programmable-logic:tutorials:cmod-a7-gpio-demo:start [2017/10/24 20:10] – [2. UART Messages] Arthur Brownlearn:programmable-logic:tutorials:cmod-a7-gpio-demo:start [2023/03/31 20:31] (current) – Arthur Brown
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-====== Cmod A7 GPIO Demo ====== +====== Cmod A7 GPIO Demo (Redirect) ====== 
- +~~NOSEMANTIC~~ 
-{{:cmod_a7:cmod_a7-obl-600.png?300|}} +~~REDIRECT>/programmable-logic/cmod-a7/demos/gpio~~ 
- +{{tag>redirect}}
-===== Overview ===== +
- +
-==== Description ==== +
- +
-This VHDL project demonstrates the basic use of most of the Cmod-A7's general purpose I/O.  +
- +
-   * The two user LEDs are tied to the two push buttons +
-   * The RGB LED is set to smoothly change colors +
-   * The UART bridge outputs a beginning message and a status message whenever a button is pressed +
- +
-==== Features Used ==== +
- +
-|              ^ Not Used             ^ Used        ^ +
-^ 2 user LEDs                        |     |  X  | +
-^ 1 tri-color LEDs                   |     |  X  | +
-^ 2 User Push Buttons                |     |  X  | +
-^ 48 GPIO Pins                       |  X  |     | +
-^ 1 Pmod port                        |  X  |     | +
-^ Pins for XADC signals              |  X  |     | +
-^ USB-UART Bridge                    |     |  X  | +
-^ 512 kB SRAM                        |  X  |     | +
- +
-------- +
- +
-===== Prerequisites ===== +
- +
-===Hardware=== +
-  * **Cmod A7 FPGA board** +
-  * **Micro-USB cable**  +
- +
-===Software=== +
-  * **Vivado Design Suite 2016.4**  +
-    * //Newer versions can be used, but the procedure may vary slightly// +
-  * **Digilent Board Support Files for Vivado**  +
-    * Follow the [[vivado:boardfiles|Vivado Board Files for Digilent 7-Series FPGA Boards]] guide on how to install Board Support Files for Vivado. +
- +
------ +
- +
-===== Downloads ===== +
- +
-Cmod A7 15T GPIO Project Repository -- [[https://github.com/Digilent/Cmod-A7-15T-GPIO|GIT Repo]] [[https://github.com/Digilent/Cmod-A7-15T-GPIO/releases/download/v2016.4-1/Cmod-A7-15T-GPIO-2016.4-1.zip|ZIP Archive]] +
- +
-Cmod A7 35T GPIO Project Repository -- [[https://github.com/Digilent/Cmod-A7-35T-GPIO|GIT Repo]] [[https://github.com/Digilent/Cmod-A7-35T-GPIO/releases/download/v2016.4-1/Cmod-A7-35T-GPIO-2016.4-1.zip|ZIP Archive]] +
- +
-------- +
- +
-===== Download and Launch the Cmod A7 GPIO Demo ===== +
- +
->1) Follow the [[:learn:programmable-logic:tutorials:github-demos:start|Using Digilent Github Demo Projects]] Tutorial. This is an HDL design project, and as such does not support Vivado SDK, select the tutorial options appropriate for a Vivado-only design. Return to this guide when prompted to check for extra hardware requirements and setup. +
-> +
-><WRAP round important 660px> +
-===Important=== +
-Make sure that between the 15T and 35T versions of the project, you download the version that applies to your Cmod A7. +
-</WRAP> +
- +
->2) In order to fully use the demo, you will need to connect a serial terminal to your Cmod A7. Plug your board into your computer with a Micro USB cable and make sure the board has power. Then open a serial terminal (such as TeraTerm) on your computer. In the terminal application setup the serial port to connect to the appropriate port for your board, with a baud rate of 9600. Then return to the Github Projects Tutorial to finish programming and running the demo. +
-> +
->{{:learn:programmable-logic:tutorials:cmod-a7-user-demo:tera-setup.png?300|}} {{:learn:programmable-logic:tutorials:cmod-a7-user-demo:setup.png?300|}} +
- +
-------- +
- +
-===== Using the Cmod A7 GPIO Demo ===== +
- +
-==== 1. LEDs and Buttons ==== +
- +
->When a button is pressed, the corresponding LED will light up. +
-> +
->{{:learn:programmable-logic:tutorials:cmod-a7-gpio-demo:gpio7.jpg?200|}}{{:learn:programmable-logic:tutorials:cmod-a7-gpio-demo:gpio8.jpg?200|}} +
- +
->The RGB LED smoothly transitions between colors. +
-> +
->{{:learn:programmable-logic:tutorials:cmod-a7-gpio-demo:gpio3.jpg?200|}}{{:learn:programmable-logic:tutorials:cmod-a7-gpio-demo:gpio4.jpg?200|}} +
- +
-==== 2. UART Messages ==== +
- +
->Connect a terminal program with the settings 9600 baud rate, 8 bits, one stop bit, and no parity bit. On reset, the board will display    "CMOD A7 GPIO/UART DEMO!" +
-> +
->{{:learn:programmable-logic:tutorials:cmod-a7-gpio-demo:gpio1.jpg?500|}} +
- +
->Whenever a button is pressed, the message "Button press detected!" is sent over UART. +
-> +
->{{:learn:programmable-logic:tutorials:cmod-a7-gpio-demo:gpio2.jpg?500|}} +
- +
-{{tag>learn programmable-logic project cmod-a7}}+