7 Segment - Revision history

Cartridge1987: /* The software */

2015-11-11T10:58:34Z

The software

Cartridge1987: /* jumper settings */

2015-11-11T10:58:15Z

jumper settings

Rew: /* Bitmap */

2013-02-19T16:31:07Z

Bitmap

Rew: /* write ports */

2013-02-19T16:29:58Z

write ports

Rew: /* The software */

2013-02-19T16:27:31Z

The software

Tom at 14:53, 16 November 2012

2012-11-16T14:53:51Z

Tom: /* The software */

2012-11-16T14:11:49Z

The software

Tom: /* The software */

2012-11-16T14:05:39Z

The software

Tom: /* The software */

2012-11-16T14:05:23Z

The software

Tom: Created page with "The 7_segment board (depicted: the SPI version) This is the documentation page for the 7_segment boards. == Overview ..."

2012-11-16T14:03:10Z

Created page with "thumb|300px|alt=spi_7segment|The 7_segment board (depicted: the SPI version) This is the documentation page for the 7_segment boards. == Overview ..."

New page

[[File:spi_7segment.jpg|thumb|300px|alt=spi_7segment|The 7_segment board (depicted: the SPI version)]]

This is the documentation page for the 7_segment boards.

== Overview ==

== Assembly instructions ==

=== Possible Configurations ===

== External resources ==

=== Datasheets ===

== Additional software ==

=== Related projects ===

== Pinout ==

=== LEDs ===

== Jumper settings ==

== Programming ==

== The software ==

== Default operation ==

== Future hardware enhancements ==

== Future software enhancements ==

== Changelog ==

=== ===
* Initial public release

@@ Line 46: / Line 46: @@
-=== write ports ===
+=== Write ports ===
 Some ports just set a single value. So writing more than one byte to such a port is redundant. Other ports are logically a stream of bytes. So writing more than one byte is encouraged.
@@ Line 73: / Line 73: @@
 |}
-=== read ports ===
+=== Read ports ===
 The 7_segment board supports several read ports:

@@ Line 34: / Line 34: @@
 There are no LEDs, except for the display of course.
-== jumper settings ==
+== Jumper settings ==
 See [[solder jumpers]] on how to change the solder jumper.

@@ Line 91: / Line 91: @@
 === Bitmap ===
-It is possible to tell the module to not show a hexadecimal digit, bit to display a user-defined digit.<br>
+It is possible to tell the module to not show a hexadecimal digit, but to display a user-defined digit.<br>
 The most significant bit in this bitmap controls segment A, and the least significant bit controls one of the dots. The lower dot is controlled by digit 2, and the upper dot by digit 3.

@@ Line 57: / Line 57: @@
 |-
 | 0x11 || Write a hexadecimal number to the display (4 bytes)
+|-
+| 0x12 || write 0x01 to store the current display as startup display. Write 0x00 to return to the default.
 |-
 | 0x20 .. 0x23 || Write a bitmap to only 1 character

@@ Line 45: / Line 45: @@
 == The software ==
-Reading the pushbuttons is very much like the DIO module. The read and write ports are described below.
 === write ports ===

@@ Line 8: / Line 8: @@
 == Assembly instructions ==
+None: the board comes fully assembled.
 === Possible Configurations ===
@@ Line 26: / Line 27: @@
 == Pinout ==
+For the SPI connector see: [[SPI_connector_pinout]].
+For the I2C connector see: [[I2C_connector_pinout]].
 === LEDs ===
+There are no LEDs, except for the display of course.
-== Jumper settings ==
+== jumper settings ==
+See [[solder jumpers]] on how to change the solder jumper.
+By changing the solder jumper SJ1, you can make the connector SPI1 (nearest the board edge) into an ICSP programming connector for the attiny48 on the board.
 == Programming ==
@@ Line 38: / Line 45: @@
 == The software ==
+Reading the pushbuttons is very much like the DIO module. The read and write ports are described below.
-== The software ==
+=== write ports ===
+Some ports just set a single value. So writing more than one byte to such a port is redundant. Other ports are logically a stream of bytes. So writing more than one byte is encouraged.
+The 7_segment board supports several read ports:
+{| border=1
+! port !! function
+|-
+| 0x10 || Write a bitmap to the display (see [[#bitmap]]) (4 bytes)
+|-
+| 0x11 || Write a hexadecimal number to the display (4 bytes)
+|-
+| 0x20 .. 0x23 || Write a bitmap to only 1 character
+|-
+| 0x30 .. 0x33 || Write a hexadecimal numer to only 1 character
+|-
+| 0x40 || Write a value other then 0x00 to light the bottom dot, 0x00 turns it off.
+|-
+| 0x41 || Write a value other then 0x00 to light the upper dot, 0x00 turns it off.
+|-
+| 0x42 || Write a value other then 0x00 to light both dots, 0x00 turns them off.
+|-
+| 0xf0 || change address.
+|}
+=== read ports ===
+The 7_segment board supports several read ports:
+{| border=1
+! port !! function
+|-
+| 0x01 || identification string. (terminated with 0).
+|-
+| 0x02 || read eeprom (serial number).
+|-
+| 0x10 || Return the entire bitmap (see [[#bitmap]]) (4 bytes)
+|-
+| 0x20 .. 0x23 || Return the bitmap of 1 character
+|}
+=== Bitmap ===
+It is possible to tell the module to not show a hexadecimal digit, bit to display a user-defined digit.<br>
+The most significant bit in this bitmap controls segment A, and the least significant bit controls one of the dots. The lower dot is controlled by digit 2, and the upper dot by digit 3.
 == Default operation ==
@@ Line 51: / Line 104: @@
 == Changelog ==
+=== 1.0 ===
-===  ===
 * Initial public release