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Tuesday, October 30, 2012

AVR Atmega 74HC595 library 01

74HC595 is a 8-bit serial-in, serial or parallel-out shift register.



74HC595 ics are usefull to expand output ports of a micro.
This library implements a way to setup 74HC595 pins.

This library is inspired on bildr 74hc595 library for arduino http://bildr.org/2011/08/74hc595-breakout-arduino/.
Setup parameters in l74hc595.h
This library was developed on Eclipse, built with avr-gcc on Atmega8 @ 1MHz.



Code


Notes
  • read risk disclaimer
  • excuse my bad english
at

4 comments:

  1. AnonymousOctober 27, 2015 at 4:15 PM

    Hi David! thanks for you library! It was really helpful, but I've a little questions, in this par #define l74hc595_setregon(regindex) l74hc595_setreg(regindex, 1); How call it? What type of Technic is it? And congratulations for this! Best Wishes from México!

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    Replies
    1. Davide GironiOctober 27, 2015 at 8:35 PM

      Hello, thank you for your feedback!. You can use that define as a function, passing the register you what to turn on as a uint16_t variable. Something like this should do the job l74hc595_setregon(regindex). As example l74hc595_setregon(1) will turn on register output pin 2. I'm sorry but i do not understaind what you mean with Technic.

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    2. AnonymousOctober 27, 2015 at 11:42 PM

      Sorry for my bad English!, I try to say what type of method is it, But now I understood and I start to read a good sources for code C special for macros and define concept. Thanks again! Best regards!!

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    3. Davide GironiOctober 28, 2015 at 6:44 PM

      You are welcome ;)

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