Please include the following information, in order for us to help you as effectively as possible.
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What product do you wish to discuss? RAK4631
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What firmware are you using? Arduino BSP
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Computer OS? Linux (Ubuntu)
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How often does the problem happen? Everytime
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How can we replicate the problem? Attempt to Write Japanese/Chinese characters to EPD
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Provide source code if custom firmware is used or link to example if RAKwireless example code is used.
Hello all!
I am wondering if anyone has found a way to write Hiragana and Kanji to the RAK14000 E-Paper display? I have seen it done, but there is little to no info i can find on it. It seems like there would need
to be some sort of MASSIVE chip to store all of the character info.
Here is what I see when I attempt to write Hiragana:
/**
@file RAK14000-Epaper-Monochrome.ino.ino
@author taylor.lee ([email protected])
@brief display image and text on DEPG0213BNS800F41HP/DEPG0213BNS800F42HP epaper,
and control by botton
@version 0.1
@date 2021-02-18
@copyright Copyright (c) 2021
*/
#include <Arduino.h>
#include <Adafruit_GFX.h>
#include <Adafruit_EPD.h>
#include "images.h"
#define POWER_ENABLE WB_IO2
#define EPD_MOSI MOSI
#define EPD_MISO -1 // not use
#define EPD_SCK SCK
#define EPD_CS SS
#define EPD_DC WB_IO1
#define SRAM_CS -1 // not use
#define EPD_RESET -1 // not use
#define EPD_BUSY WB_IO4
#define LEFT_BUTTON WB_IO3
#define MIDDLE_BUTTON WB_IO5
#define RIGHT_BUTTON WB_IO6
/*****************************************************/
/*****************************************************/
/* Select the correct display from the defines below */
/* The display type is printed on the back of the */
/* display. */
/* If you use a different display than the one */
/* provided by RAKwireless you have to adjust the */
/* the values matching with your custom display */
/*****************************************************/
/*****************************************************/
typedef struct DEPG {
int width;
int height;
int position1_x;
int position1_y;
int position2_x;
int position2_y;
int position3_x;
int position3_y;
int position4_x;
int position4_y;
} DEPG;
DEPG DEPG_HP = {250,122,40,20,40,30,40,50,90,40}; //use DEPG0213BNS800F41HP as default
//DEPG DEPG_HP = {212,104,30,15,30,25,30,45,80,30}; // this is for DEPG0213BNS800F42HP
uint8_t gKeyNum = 2; // which button is pressed
// left button interrupt handle function
void interruptHandle1()
{
if(gKeyNum == 0)
{
gKeyNum = 1;
}
}
// middle button interrupt handle function
void interruptHandle2()
{
if(gKeyNum == 0)
{
gKeyNum = 2;
}
}
// right button interrupt handle function
void interruptHandle3()
{
if(gKeyNum == 0)
{
gKeyNum = 3;
}
}
// 2.13" EPD with SSD1680
Adafruit_SSD1680 display(DEPG_HP.width, DEPG_HP.height, EPD_MOSI,
EPD_SCK, EPD_DC, EPD_RESET,
EPD_CS, SRAM_CS, EPD_MISO,
EPD_BUSY);
void testdrawtext(int16_t x, int16_t y, char *text, uint16_t color);
/**
@brief Arduino Setup function
*/
void setup(void)
{
pinMode(POWER_ENABLE, INPUT_PULLUP);
digitalWrite(POWER_ENABLE, HIGH);
Serial.begin(115200);
time_t timeout = millis();
while (!Serial)
{
if ((millis() - timeout) < 5000)
{
delay(100);
}
else
{
break;
}
}
// set left button interrupt
pinMode(LEFT_BUTTON, INPUT);
attachInterrupt(LEFT_BUTTON, interruptHandle1, FALLING);
// set middle button interrupt
pinMode(MIDDLE_BUTTON, INPUT);
attachInterrupt(MIDDLE_BUTTON, interruptHandle2, FALLING);
// set right button interrupt
pinMode(RIGHT_BUTTON, INPUT);
attachInterrupt(RIGHT_BUTTON, interruptHandle3, FALLING);
Serial.println("EPD Epaper-DEPG0213BNS800F4xHP test");
display.begin();
// large block of text
display.clearBuffer();
display.drawBitmap(DEPG_HP.position1_x, DEPG_HP.position1_y, rak_img, 150, 56, EPD_BLACK);
testdrawtext(DEPG_HP.position1_x, DEPG_HP.position1_y+50, "IoT Made Easy", (uint16_t)EPD_BLACK, 2);
display.display(true);
}
/**
@brief Arduino Loop function
*/
void loop()
{
if(gKeyNum == 1)
{
Serial.println("Left button pressed");
display.clearBuffer();
display.drawBitmap(DEPG_HP.position2_x, DEPG_HP.position2_y, rak_img, 150, 56, EPD_BLACK);
display.display(true);
gKeyNum = 0;
}
if(gKeyNum == 2)
{
Serial.println("Middle button pressed");
display.clearBuffer();
testdrawtext(DEPG_HP.position3_x, DEPG_HP.position3_y, "γγγ«γ‘γ―", (uint16_t)EPD_BLACK, 2);
display.display(true);
gKeyNum = 0;
}
if(gKeyNum == 3)
{
Serial.println("Right button pressed");
display.clearBuffer();
display.drawBitmap(DEPG_HP.position4_x, DEPG_HP.position4_y, lora_img, 60, 40, EPD_BLACK);
display.display(true);
gKeyNum = 0;
}
}
/**
@brief Write a text on the display
@param x x position to start
@param y y position to start
@param text text to write
@param text_color color of text
@param text_size size of text
*/
void testdrawtext(int16_t x, int16_t y, char *text, uint16_t text_color, uint32_t text_size)
{
display.setCursor(x, y);
display.setTextColor(text_color);
display.setTextSize(text_size);
display.setTextWrap(true);
display.print(text);
}
