RPi Tutorial EGHS:Alpha-Numeric Display - Revision history

Meltwater: /* Theory */

2012-02-27T09:44:07Z

‎Theory

Meltwater: /* TI LaunchPad */

2012-02-27T09:42:21Z

‎TI LaunchPad

Meltwater: /* Circuit 1 - Alpha-Numeric LCD Module via 6 GPIO outputs */

2012-02-24T10:35:02Z

‎Circuit 1 - Alpha-Numeric LCD Module via 6 GPIO outputs

Meltwater: /* Circuit 1 - Alpha-Numeric LCD Module via 6 GPIO outputs */

2012-02-24T10:34:34Z

‎Circuit 1 - Alpha-Numeric LCD Module via 6 GPIO outputs

Meltwater: /* Circuit 1 - Alpha-Numeric LCD Module via 6 GPIO outputs */

2012-02-24T10:33:28Z

‎Circuit 1 - Alpha-Numeric LCD Module via 6 GPIO outputs

Meltwater: /* The Hardware */

2012-02-23T21:16:18Z

‎The Hardware

Meltwater: /* Circuit 1 - LCD Module via 6 GPIO outputs */

2012-02-23T21:15:29Z

‎Circuit 1 - LCD Module via 6 GPIO outputs

Meltwater: /* Circuit 1 - LCD Module via 6 GPIO outputs */

2012-02-23T21:14:58Z

‎Circuit 1 - LCD Module via 6 GPIO outputs

Meltwater: /* Circuit 1 - LCD Module via 6 GPIO outputs */

2012-02-23T21:07:23Z

‎Circuit 1 - LCD Module via 6 GPIO outputs

Meltwater: /* The Hardware */ -added details for circuit one

2012-02-23T10:36:55Z

‎The Hardware: -added details for circuit one

@@ Line 40: / Line 40: @@
 The circuits will be focused on the setup that will be required for running these Alpha Numeric Modules with the RPi (should be identical to TI Launchpad setup).
-For this setup, the Powertip PC 1602-H module <ref>[http://uk.farnell.com/powertip/pc1602aru-hwb-g-q/lcd-module-16x2-x-tmp/dp/1671498 (similar to this one)]</ref> will be used (simply because I already had one), however most Alpha Numeric LCD displays use the same Hitachi HD44780 based driver (or similar) will be suitable (just take note of the pinouts if they are different).
+For this setup, the Powertip PC 1602-H module (similar to this one)<ref>[http://uk.farnell.com/powertip/pc1602aru-hwb-g-q/lcd-module-16x2-x-tmp/dp/1671498 Farnell - Powertip - PC1602ARU]</ref> will be used (simply because I already had one), however most Alpha Numeric LCD displays use the same Hitachi HD44780 based driver (or similar) will be suitable (just take note of the pinouts if they are different).
 Both circuits, will drive the LCD using a 5V supply while applying 3.3V logic to the data and control pins, since while lower voltage displays are available, the 5V ones are the cheapest and we have more current available through the RPi via the 5V line anyway.
 ===Circuit 1 - Alpha-Numeric LCD Module via 6 GPIO outputs ===

@@ Line 130: / Line 130: @@
 Sample test code for LCD Test Module (tested on TI MSP430G2553 device).
+====Circuit 1 - 6 GPIO - Pin Mapping ====
 Code:
 ===RPi===

@@ Line 46: / Line 46: @@
 ===Circuit 1 - Alpha-Numeric LCD Module via 6 GPIO outputs ===
 [[File:EGHS-LCD16x2PinSetup.jpg|right|LCD Module via 6 GPIO outputs PC1602-H Pin Setup]]
 PC1602-H Pin Connections
 {|style="border-collapse: separate; border-spacing: 0; border-width: 1px; border-style: solid; border-color: #000; padding: 0"
 |-

@@ Line 48: / Line 48: @@
 [[File:EGHS-LCD16x2PinSetup.jpg|right|LCD Module via 6 GPIO outputs PC1602-H Pin Setup]]
 PC1602-H Pin Connections
 {|style="border-collapse: separate; border-spacing: 0; border-width: 1px; border-style: solid; border-color: #000; padding: 0"
 |-

@@ Line 80: / Line 80: @@
 |style="border-style: solid; border-width: 0 1px 0 0"| 7
 |style="border-style: solid; border-width: 0 1px 0 0"| Data DB0
-|style="border-style: solid; border-width: 0 1px 0 0"| GPIO Digital Output Pin
+|style="border-style: solid; border-width: 0 1px 0 0"| Not Used
 |-
 |style="border-style: solid; border-width: 0 1px 0 0"| 8
 |style="border-style: solid; border-width: 0 1px 0 0"| Data DB1
-|style="border-style: solid; border-width: 0 1px 0 0"| GPIO Digital Output Pin
+|style="border-style: solid; border-width: 0 1px 0 0"| Not Used
 |-
 |style="border-style: solid; border-width: 0 1px 0 0"| 9
 |style="border-style: solid; border-width: 0 1px 0 0"| Data DB2
-|style="border-style: solid; border-width: 0 1px 0 0"| GPIO Digital Output Pin
+|style="border-style: solid; border-width: 0 1px 0 0"| Not Used
 |-
 |style="border-style: solid; border-width: 0 1px 0 0"| 10
 |style="border-style: solid; border-width: 0 1px 0 0"| Data DB3
-|style="border-style: solid; border-width: 0 1px 0 0"| GPIO Digital Output Pin
+|style="border-style: solid; border-width: 0 1px 0 0"| Not Used
 |-
 |style="border-style: solid; border-width: 0 1px 0 0"| 11
 |style="border-style: solid; border-width: 0 1px 0 0"| Data DB4
-|style="border-style: solid; border-width: 0 1px 0 0"| Not Used
+|style="border-style: solid; border-width: 0 1px 0 0"| GPIO Digital Output Pin
 |-
 |style="border-style: solid; border-width: 0 1px 0 0"| 12
 |style="border-style: solid; border-width: 0 1px 0 0"| Data DB5
-|style="border-style: solid; border-width: 0 1px 0 0"| Not Used
+|style="border-style: solid; border-width: 0 1px 0 0"| GPIO Digital Output Pin
 |-
 |style="border-style: solid; border-width: 0 1px 0 0"| 13
 |style="border-style: solid; border-width: 0 1px 0 0"| Data DB6
-|style="border-style: solid; border-width: 0 1px 0 0"| Not Used
+|style="border-style: solid; border-width: 0 1px 0 0"| GPIO Digital Output Pin
 |-
 |style="border-style: solid; border-width: 0 1px 0 0"| 14
 |style="border-style: solid; border-width: 0 1px 0 0"| Data DB7
-|style="border-style: solid; border-width: 0 1px 0 0"| Not Used
+|style="border-style: solid; border-width: 0 1px 0 0"| GPIO Digital Output Pin
 |-
 |style="border-style: solid; border-width: 0 1px 0 0"| 15

@@ Line 45: / Line 45: @@
-===Circuit 1 - LCD Module via 6 GPIO outputs ===
+===Circuit 1 - Alpha-Numeric LCD Module via 6 GPIO outputs ===
 [[File:EGHS-LCD16x2PinSetup.jpg|right|LCD Module via 6 GPIO outputs PC1602-H Pin Setup]]
 PC1602-H Pin Connections
@@ Line 121: / Line 121: @@
 With the exception of possibly a variable resistor across +5V and GND, connected to pin 3 (Vo - Contrast) if required, no additional components are needed(the GPIO connections can be connected directly to the processor (i.e the RPi) GPIO pins.
-===Circuit 2 - LCD Module via 2 GPIO outputs  ===
+===Circuit 2 - Alpha-Numeric via 2 GPIO outputs  ===
 ==The Software==

@@ Line 118: / Line 118: @@
 |style="border-style: solid; border-width: 0 1px 0 0"| Not Available (although can connect to GND if it is)
 |}
 ===Circuit 2 - LCD Module via 2 GPIO outputs  ===

@@ Line 36: / Line 36: @@
 ==The Hardware==
 ===Theory===
-===Circuit 1 - ===
+For this setup, the Powertip PC 1602-H module <ref>[http://uk.farnell.com/powertip/pc1602aru-hwb-g-q/lcd-module-16x2-x-tmp/dp/1671498 (similar to this one)]</ref> will be used (simply because I already had one), however most Alpha Numeric LCD displays use the same Hitachi HD44780 based driver (or similar) will be suitable (just take note of the pinouts if they are different).
 ===Circuit 2 -  ===
 ==The Software==