adafruit / adafruit_sharp_memory_display

This is an Arduino library for the Adafruit Monochrome SHARP Memory Displays

Adafruit SHARP Memory Display

This is the Adafruit SHARP Memory Display Arduino Library for Arduino

Tested and works great with the Adafruit SHARP Memory Display Breakout Board. Pick one up today in the adafruit shop! http://www.adafruit.com/products/1393

Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit!

Dependencies

These displays use SPI to communicate, 3 pins are required to
interface

• Adafruit GFX Library

Contributing

Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.

Documentation and doxygen

Documentation is produced by doxygen. Contributions should include documentation for any new code added.

Some examples of how to use doxygen can be found in these guide pages:

https://learn.adafruit.com/the-well-automated-arduino-library/doxygen

https://learn.adafruit.com/the-well-automated-arduino-library/doxygen-tips

Written by Limor Fried & Kevin Townsend for Adafruit Industries. BSD license, check license.txt for more information All text above, and the splash screen must be included in any redistribution

To install, use the Arduino Library Manager and search for "Adafruit SHARP Memory Display" and install the library.

adafruit_sharp_memory_display's Issues

LICENSE

Recent changes result in screen rotation of 180 degrees.

The begin() method, Adafruit_SharpMem::begin(), contains the statement setRotation(2). This seemingly arbitrary statement had no effect originally, though, because rotation wasn't supported in drawPixel(). The recent changes to add this support, though, have caused the display on my project to undergo 180 degrees of rotation after updating this library.

Can we remove the setRotation(2) from begin(), perhaps?

I will be adding a setRotation(0) in my own code, regardless, as a workaround.

Problem with SPI using Arduino MKRZero + Adafruit breakout 400x240 Sharp Memory Display

Working fine with the Arduino Due. I am able to load bmp hex arrays but converting to the MKRZero board the hardware SPI is not communicating therefore not displaying anything with same code.

I've been changing the clock speed for CS pin in the library to 48 from 84 and also, tried using SPI.setClockDivider(SPI_CLOCK_DIV16); and changing the SPI class. All of this with no success.

What is needed to change in the library to adjust for this board?

Thanks in advance.

Hardware SPI support

Adafruit_SSD1325 has the option to use hardware SPI while this library doesn't - which prevents from using a memory LCD with other SPI devices on the microcontroller SPI pins. Looking at pull requests it looks like other where trying to add that ( #6 ) but it wasn't merged.

Sharp Memory Display Not compiling for Arduino 101

Hi all,
I am in urgent need of help compiling the code for the Sharp Memory Display on my Arduino 101. Any assistance would be greatly appreciated!!

Here's the error message I keep getting:

Arduino: 1.6.9 Hourly Build 2016/03/25 03:03 (Mac OS X), Board: "Arduino/Genuino 101"
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp: In constructor ‘Adafruit_SharpMem::Adafruit_SharpMem(uint8_t, uint8_t, uint8_t)’:
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:70:15: error: cannot convert ‘uint32_t* {aka long unsigned int_}’ to ‘volatile uint8_t_ {aka volatile unsigned char_}’ in assignment
clkport = portOutputRegister(digitalPinToPort(clk));
^
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:72:15: error: cannot convert ‘uint32_t {aka long unsigned int_}’ to ‘volatile uint8_t_ {aka volatile unsigned char*}’ in assignment
dataport = portOutputRegister(digitalPinToPort(_mosi));
^
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp: At global scope:
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:153:49: warning: narrowing conversion of ‘-2’ from ‘int’ to ‘const uint8_t {aka const unsigned char}’ inside { } [-Wnarrowing]
clr[] = { ~1, ~2, ~4, ~8, ~16, ~32, ~64, ~128 };
^
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:153:49: warning: narrowing conversion of ‘-3’ from ‘int’ to ‘const uint8_t {aka const unsigned char}’ inside { } [-Wnarrowing]
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:153:49: warning: narrowing conversion of ‘-5’ from ‘int’ to ‘const uint8_t {aka const unsigned char}’ inside { } [-Wnarrowing]
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:153:49: warning: narrowing conversion of ‘-9’ from ‘int’ to ‘const uint8_t {aka const unsigned char}’ inside { } [-Wnarrowing]
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:153:49: warning: narrowing conversion of ‘-17’ from ‘int’ to ‘const uint8_t {aka const unsigned char}’ inside { } [-Wnarrowing]
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:153:49: warning: narrowing conversion of ‘-33’ from ‘int’ to ‘const uint8_t {aka const unsigned char}’ inside { } [-Wnarrowing]
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:153:49: warning: narrowing conversion of ‘-65’ from ‘int’ to ‘const uint8_t {aka const unsigned char}’ inside { } [-Wnarrowing]
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:153:49: warning: narrowing conversion of ���-129’ from ‘int’ to ‘const uint8_t {aka const unsigned char}’ inside { } [-Wnarrowing]
Documents/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:153:49: warning: large integer implicitly truncated to unsigned type [-Woverflow]
exit status 1
Error compiling for board Arduino/Genuino 101.

Not compiling for Feather M0+

When trying to compile for the Feather M0+ using the Arduino IDE, I get an error message:

Warning: platform.txt from core 'Adafruit SAMD Boards' contains deprecated recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{build.path}/{archive_file}" "{object_file}", automatically converted to recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{archive_file_path}" "{object_file}". Consider upgrading this core. /home/jaz/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp: In constructor 'Adafruit_SharpMem::Adafruit_SharpMem(uint8_t, uint8_t, uint8_t)': /home/jaz/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:64:15: error: cannot convert 'volatile uint32_t* {aka volatile long unsigned int*}' to 'volatile uint8_t* {aka volatile unsigned char*}' in assignment clkport = portOutputRegister(digitalPinToPort(_clk)); ^ /home/jaz/Arduino/libraries/Adafruit_SHARP_Memory_Display/Adafruit_SharpMem.cpp:66:15: error: cannot convert 'volatile uint32_t* {aka volatile long unsigned int*}' to 'volatile uint8_t* {aka volatile unsigned char*}' in assignment dataport = portOutputRegister(digitalPinToPort(_mosi)); ^ exit status 1 Error compiling.

I'd assume these lines that are inducing the error are some AVR specific stuff. I'm not sure though because I've had this library compile on a Teensy 3.2.

Add "clearBuffer" command to reduce screen flickering.

This is likely not an issue for everyone, but for me using the 400x240 display on a SAMD21 clearing the screen before every refresh makes it flicker. To keep it looking smooth I added a "clearBuffer" command that allows the user to write new data to the screen, without completely clearing it first.

//
/*!
@brief Clears the content of the write buffer.
*/
//
void Adafruit_SharpMem::clearBuffer() {
memset(sharpmem_buffer, 0xff, (WIDTH * HEIGHT) / 8);
}