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learn:courses:unit-3-lab3b:start [2017/03/16 22:10] – Marthalearn:courses:unit-3-lab3b:start [2022/10/04 11:38] (current) – external edit 127.0.0.1
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 ====== Lab 3b: LCD Parallel Interface - PMP I/O Control ====== ====== Lab 3b: LCD Parallel Interface - PMP I/O Control ======
 +[[{}/learn/courses/unit-3/start|Back to Unit 3]]
 +[[{}/learn/courses/unit-3-lab3a/start|Back to Lab 3a]]
 == Download This Document == == Download This Document ==
-  * {{ :learn:courses:unit-3-lab3b:lab_3b.pdf |Lab 3b PDF}}+{{ :learn:courses:unit-3-lab3b:lab_3b.pdf |Lab 3b PDF}}
  
 ===== 1. Objectives ===== ===== 1. Objectives =====
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 ===== 3. Equipment List ===== ===== 3. Equipment List =====
 ==== 3.1. Hardware ==== ==== 3.1. Hardware ====
-  * [[http://store.digilentinc.com/basys-mx3-pic32mx-trainer-board-recommended-for-embedded-systems-courses/|Basys MX3 trainer board]] +  - [[https://digilent.com/shop/basys-mx3-pic32mx-trainer-board-for-embedded-systems-courses/|Basys MX3 trainer board]] 
-  * [[http://store.digilentinc.com/usb-a-to-micro-b-cable/|Micro USB cable]] +  - [[https://digilent.com/shop/usb-a-to-micro-b-cable/|Micro USB cable]] 
-  * Workstation computer running Windows 10 or higher, MAC OS, or Linux+  - Workstation computer running Windows 10 or higher, MAC OS, or Linux
  
 In addition, we suggest the following instruments: In addition, we suggest the following instruments:
  
-  * [[http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,842,1018&Prod=ANALOG-DISCOVERY|Digilent Analog Discovery 2]]+  - [[http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,842,1018&Prod=ANALOG-DISCOVERY|Digilent Analog Discovery 2]]
  
  
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 The following programs must be installed on your development workstation: The following programs must be installed on your development workstation:
  
-  * [[http://www.microchip.com/mplab/mplab-x-ide|Microchip MPLAB X® v3.35 or higher]] +  - [[http://www.microchip.com/mplab/mplab-x-ide|Microchip MPLAB X® v3.35 or higher]] 
-  * [[http://www.microchip.com/SWLibraryWeb/product.aspx?product=PIC32%20Peripheral%20Library|PLIB Peripheral Library]] +  - [[http://www.microchip.com/SWLibraryWeb/product.aspx?product=PIC32%20Peripheral%20Library|PLIB Peripheral Library]] 
-  * [[http://www.microchip.com/xcdemo/xcpluspromo.aspx|XC32 Cross Compiler]] +  - [[http://www.microchip.com/xcdemo/xcpluspromo.aspx|XC32 Cross Compiler]] 
-  * [[http://store.digilentinc.com/waveforms-2015-download-only/|WaveForms 2015]]+  - [[https://digilent.com/shop/software/digilent-waveforms/|WaveForms]]
  
 ---- ----
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 ===== 7. LCD Background Information ===== ===== 7. LCD Background Information =====
-Character [[https://en.wikipedia.org/wiki/Liquid-crystal_display|Liquid Crystal Displays]] (LCD) are low-cost electronic devices that are capable of generating visual displays consisting of alphanumeric characters and graphical symbols commonly used for [[https://en.wikipedia.org/wiki/Embedded_system|embedded system human machine interfaces]] (HMI). Many suppliers of LCD devices are based on the [[https://en.wikipedia.org/wiki/Hitachi_HD44780_LCD_controller|Hitachi HD44780]] LCD controller, and hence have a common hardware and software interface. Some LCD devices have serial interfaces that use UART, I2C, and SPI communications((PmodCLS: Character LCD with Serial Interface, [[http://store.digilentinc.com/pmodcls-character-lcd-with-serial-interface/|http://store.digilentinc.com/pmodcls-character-lcd-with-serial-interface/]])). These protocols are covered in Unit 4. Other LCD devices use interfaces consisting of four or eight data lines and three control lines((PmodCLP Character LCD with Parallel Interface, [[http://store.digilentinc.com/pmodclp-character-lcd-with-parallel-interface/|http://store.digilentinc.com/pmodclp-character-lcd-with-parallel-interface/]])). Although the LCDs that use a serial interface require fewer processor I/O pins, the display controller IC is still based on the Hitachi HD44780, which uses 8 or 11 I/O pins. Hence, the serial LCD devices have an on-board microprocessor that translates the serial communications instructions to parallel I/O. +Character [[https://en.wikipedia.org/wiki/Liquid-crystal_display|Liquid Crystal Displays]] (LCD) are low-cost electronic devices that are capable of generating visual displays consisting of alphanumeric characters and graphical symbols commonly used for [[https://en.wikipedia.org/wiki/Embedded_system|embedded system human machine interfaces]] (HMI). Many suppliers of LCD devices are based on the [[https://en.wikipedia.org/wiki/Hitachi_HD44780_LCD_controller|Hitachi HD44780]] LCD controller, and hence have a common hardware and software interface. Some LCD devices have serial interfaces that use UART, I2C, and SPI communications((PmodCLS: Character LCD with Serial Interface, [[https://digilent.com/shop/pmod-cls-character-lcd-with-serial-interface/]])). These protocols are covered in Unit 4. Other LCD devices use interfaces consisting of four or eight data lines and three control lines((PmodCLP Character LCD with Parallel Interface, [[https://digilent.com/reference/pmod/pmodclp/start]])). Although the LCDs that use a serial interface require fewer processor I/O pins, the display controller IC is still based on the Hitachi HD44780, which uses 8 or 11 I/O pins. Hence, the serial LCD devices have an on-board microprocessor that translates the serial communications instructions to parallel I/O. 
  
 The handshaking required to successfully communicate with the LCD on the Basys MX3 is representative of many common parallel interfaces. The handshaking required to successfully communicate with the LCD on the Basys MX3 is representative of many common parallel interfaces.
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     - Initializes a loop counter to a value of zero.     - Initializes a loop counter to a value of zero.
     - Displays your name on the first line.     - Displays your name on the first line.
-    - Repositions the cursor to the beginning of the second line and displays the text “LAB 3.”+    - Repositions the cursor to the beginning of the second line and displays the text “Lab 3b.”
     - Repositions the cursor to the eighth character position of the second line.     - Repositions the cursor to the eighth character position of the second line.
     - Displays the value of the loop counter.     - Displays the value of the loop counter.
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 ===== Appendix A: Basys MX3 Schematic Drawings ===== ===== Appendix A: Basys MX3 Schematic Drawings =====
-{{ :learn:courses:unit-3-lab3a:lab3a-figure-a-1.png?nolink |Figure A.1. LCD connection schematic diagram for Labs 3a and 3b.}}+{{ :learn:courses:unit-3-lab3b:lab_3b_3_fig_a_1.jpg?nolink&550 |Figure A.1. LCD connection schematic diagram for Labs 3a and 3b.}}
 //Figure A.1. LCD connection schematic diagram for Labs 3a and 3b.// //Figure A.1. LCD connection schematic diagram for Labs 3a and 3b.//
- 
  
 ---- ----
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 {{ :learn:courses:unit-3-lab3a:lab3a-figure-b-5.png?nolink |Figure B.5. LCD display character control flow diagram.}} {{ :learn:courses:unit-3-lab3a:lab3a-figure-b-5.png?nolink |Figure B.5. LCD display character control flow diagram.}}
 //Figure B.5. LCD display character control flow diagram.// //Figure B.5. LCD display character control flow diagram.//
 +
 +----
 +
 +[[{}/learn/courses/unit-3/start|Back to Unit 3]]
 +[[{}/learn/courses/unit-3-lab3a/start|Back to Lab 3a]]
 +[[{}/learn/courses/unit-4-1/start|Go to Unit 4 Part 1]]
 +