How to configure/compile library for other hardware

[michalsok]

Hi. I purchased my EPD (4.2") and Adafruit Feather M0 logger (with SD card socket) to build my simple eBook reader. Then, while searching for libraries to simplify my project, I stumbled across your project and was super excited that I don't have to start from nothing. My setup is simple: EPD and SD on SPI plus MCP23008 for buttons in I2C I downloaded the folder and modified the OpenBook.h like so:

#elif defined(ADAFRUIT_FEATHER_M0) // e-book wing on Feather M0 #define OPENBOOK_DISPLAY_BUS (&SPI) #define OPENBOOK_SRCS (-1) #define OPENBOOK_ECS (10) #define OPENBOOK_EDC (9) #define OPENBOOK_ERST (6) #define OPENBOOK_EBSY (5) #define OPENBOOK_SDCS (4) #define OPENBOOK_BCS (-1) #define OPENBOOK_BATTERY_MONITOR (A7) #define OPENBOOK_BUTTON_INTERRUPT (11) #define OPENBOOK_BUTTON_LATCH (-1) #define OPENBOOK_BUTTON_DATA (-1) #define OPENBOOK_BUTTON_CLOCK (-1) #define OPENBOOK_BUTTON_LOCK (-1) #define OPENBOOK_BUTTON_ACTIVE (LOW) #define OPENBOOK_AUDIO_L (-1) #define OPENBOOK_AUDIO_R (-1) #define OPENBOOK_MIC_RAW (-1) #define OPENBOOK_MIC_AMPLIFIED (-1)

Disabled the serial RAM as this waveshare 4.2 BW already has one built in and I also wanted to disable Flash for Babel. I am assuming that it is the OPENBOOK_BCS (-1) that does it. (Don't have EAGLE so I can't verify) I am building a simple external PCB with MCP23008 and buttons to handle buttons. How do I disable Babel support (can it be disabled?) When compiling I get an error: "BabelTypesetterGFX.h: No such file or directory" What is causing it? Could you help me to modify the library setup to work with my simple reader hardware? Thank you, Mike.

[joeycastillo]

Thanks for bringing up this issue, it's something I hadn't gotten to yet. One of my goals has been to make a "lightweight" version of the Babel library that just includes ASCII glyphs in memory, to allow support a consistent method for typesetting even if you don't have the extra chip installed.

For the moment, if you just install the library (from here), it will silence the errors, but I may need to figure out a better way to do this for folks that want to pick and choose specific bits of functionality.

[michalsok]

Thank you. I will give it a try.