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boards:ecb:4pio-i2c:development [2021/05/20 09:54]
b1ackmai1er
boards:ecb:4pio-i2c:development [2021/05/20 10:19] (current)
b1ackmai1er
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 ^WRITE|11010001 (D1)| ^WRITE|11010001 (D1)|
  
-{{:​boards:​ecb:​4pio-i2c:​development:​pcf8574.pdf|PCF8574}} ​ > {{:​boards:​ecb:​4pio-i2c:​development:​hd44780_lcd_driver_datasheet.pdf|LCD}} ​ {{https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​tok=10f051&​media=https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​tok=5ed9e3&​media=https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​tok=f3f91e&​media=https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​tok=f46157&​media=https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​tok=b40609&​media=https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​media=boards:​ecb:​4pio-i2c:​development:​i2c-lcd-backpack.png?​linkonly|backpack}}+{{:​boards:​ecb:​4pio-i2c:​development:​pcf8574.pdf|PCF8574}} ​ > {{:​boards:​ecb:​4pio-i2c:​development:​hd44780_lcd_driver_datasheet.pdf|LCD}} ​ {{https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​tok=100ca2&​media=https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​tok=10f051&​media=https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​tok=5ed9e3&​media=https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​tok=f3f91e&​media=https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​tok=f46157&​media=https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​tok=b40609&​media=https://​www.retrobrewcomputers.org/​lib/​exe/​fetch.php?​media=boards:​ecb:​4pio-i2c:​development:​i2c-lcd-backpack.png?​linkonly|backpack}}
  
 A PCF8574 I2C 8-bit I/O expander is commonly used to driver LCD displays. A PCF8574 I2C 8-bit I/O expander is commonly used to driver LCD displays.
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 Linux C driver: [[https://​code.woboq.org/​linux/​linux/​drivers/​i2c/​algos/​i2c-algo-pcf.c.html|https://​code.woboq.org/​linux/​linux/​drivers/​i2c/​algos/​i2c-algo-pcf.c.html]] Linux C driver: [[https://​code.woboq.org/​linux/​linux/​drivers/​i2c/​algos/​i2c-algo-pcf.c.html|https://​code.woboq.org/​linux/​linux/​drivers/​i2c/​algos/​i2c-algo-pcf.c.html]]
 +
 +I2CScan code: [[https://​groups.google.com/​group/​retro-comp/​attach/​25120f43d0386/​I2CSPI.ZIP?​part=0.1|https://​groups.google.com/​group/​retro-comp/​attach/​25120f43d0386/​I2CSPI.ZIP?​part=0.1]]
  
 ====== Key Learnings ====== ====== Key Learnings ======
boards/ecb/4pio-i2c/development.txt · Last modified: 2021/05/20 10:19 by b1ackmai1er
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