Serial 4-digit LED Display Modules
Contents
QIFEI 4-bit LED Digital Tube Module
(2 x 74HC595 based)
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Cascade Tests: |
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CATALEX 4-Digit Display v1.0
(TM1637 based)
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CATALEX 4-Digit Digital Clock Display v1.0
(TM1637 based)
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LC Technology 2 x 4-Digit Display
(2 x 74HC164 based)
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First, Quick Tests: 1 |
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Note: SPI CE signal is not in use! |
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Second Set of Tests: 2 |
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./src/spi_led_2x4d_demo -MXT -W -X |
./src/spi_led_2x4d_demo -MX8DI 31422017 -W -X |
./src/spi_led_2x4d_demo -MXUDI 8765 -X -W |
./src/spi_led_2x4d_demo -MXLDI 4321 -X -W |
pi@raspiP3BStretch16Gb:~/i2c_spi_chips-0.0 $ ./src/spi_led_2x4d_demo spi_led_2x4d_demo.c Version 0.01 {Exp}, [30/09/2017], (c) F_Trevor_Gowen <--| Package i2c_spi_chips_0.0 |--> Usage spi_led_2x4d_demo [Options] Options: -a arg_filename[.arg], -E {Echo command-line arguments}, -DON {Display fully ON}, -DOFF {Display fully OFF}, -MXUDI d {MultipleXed Upper Display of 4-digit Integer d}, -MXLDI d {MultipleXed Lower Display of 4-digit Integer d}, -MX8DI d {MultipleXed Display of 8-digit Integer d}, -MXT {MultipleXed digits Test}, -Q {Quiet - default}, -SQT {SeQuential digit block Test}, -S {use System call methods - default}, -V {Verbose}, -W {use Wiring pi spi methods}, -X {eXecute demonstration}.