jun imamura
Library for Waveshare epd1in54b (1.54 inch ePaper black/red)
e-Paper Module
Description
Waveshare 1.54 e-paper module imported from offiicial code https://www.waveshare.com/wiki/1.54inch_e-Paper_Module_(B) Codes are referenced from official Arduino code and Raspberry pi code.
SPI is used for communication between ePaper module and mbed.
Following shapes can be used:
- primitive shape (square, circle, line)
- font (variable sizes)
Pull request are appreciated (Note that the original code is copyrighted by (C) Waveshare )
Example Output
Display output with example code will be like following image:
Example Code
include the mbed library with this snippet
#include "mbed.h"
#include "epd1in54b.h"
// Control
PinName rst;
PinName dc;
PinName busy;
// SPI communication
PinName mosi;
PinName miso;
PinName sclk;
PinName cs;
DigitalOut myled(LED1);
unsigned char frame_black[EPD_HEIGHT*EPD_WIDTH/8];
unsigned char frame_red[EPD_HEIGHT*EPD_WIDTH/8];
int main() {
mosi = p5;
miso = p6;
sclk = p7;
cs = p8;
rst = p9;
dc = p10;
busy = p11;
memset(frame_black, 0xFF, sizeof(unsigned char)*EPD_HEIGHT*EPD_WIDTH/8);
memset(frame_red, 0xFF, sizeof(unsigned char)*EPD_HEIGHT*EPD_WIDTH/8);
Epd epd = Epd(mosi, miso, sclk, cs, dc, rst, busy);
if (epd.Init() != 0){
return -1;
}
/* Draw something to the frame buffer */
// For simplicity, the arguments are explicit numerical coordinates
epd.DrawRectangle(frame_black, 10, 60, 50, 110, COLORED);
epd.DrawLine(frame_black, 10, 60, 50, 110, COLORED);
epd.DrawLine(frame_black, 50, 60, 10, 110, COLORED);
epd.DrawCircle(frame_black, 120, 80, 30, COLORED);
epd.DrawFilledRectangle(frame_red, 10, 130, 50, 180, COLORED);
epd.DrawFilledRectangle(frame_red, 0, 6, 200, 26, COLORED);
epd.DrawFilledCircle(frame_red, 120, 150, 30, COLORED);
/*Write strings to the buffer */
epd.DrawStringAt(frame_black, 30, 30, "e-Paper Demo", &Font16, COLORED);
epd.DrawStringAt(frame_red, 28, 10, "Hello world!", &Font16, UNCOLORED);
// display images
epd.DisplayFrame(frame_black, frame_red);
//epd.DisplayFrame(IMAGE_BLACK, IMAGE_RED);
epd.Sleep();
while(1) {
myled = 1;
wait(0.5);
myled = 0;
wait(0.5);
}
}
Diff: epd1in54b.h
- Revision:
- 0:cba3c1061231
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/epd1in54b.h Sun Feb 11 01:34:23 2018 +0000
@@ -0,0 +1,131 @@
+/**
+ * @filename : epd1in54b.h
+ * @brief : Header file for e-paper display library epd1in54b.cpp
+ * @author : Yehui from Waveshare
+ *
+ * Copyright (C) Waveshare August 10 2017
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documnetation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS OR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef EPD1IN54B_H
+#define EPD1IN54B_H
+
+#include "epdif.h"
+#include "fonts.h"
+
+#define LOW 0
+#define HIGH 1
+
+// Display resolution
+#define EPD_WIDTH 200
+#define EPD_HEIGHT 200
+
+#define COLORED 1
+#define UNCOLORED 0
+
+// EPD1IN54B commands
+#define PANEL_SETTING 0x00
+#define POWER_SETTING 0x01
+#define POWER_OFF 0x02
+#define POWER_OFF_SEQUENCE_SETTING 0x03
+#define POWER_ON 0x04
+#define POWER_ON_MEASURE 0x05
+#define BOOSTER_SOFT_START 0x06
+#define DEEP_SLEEP 0x07
+#define DATA_START_TRANSMISSION_1 0x10
+#define DATA_STOP 0x11
+#define DISPLAY_REFRESH 0x12
+#define DATA_START_TRANSMISSION_2 0x13
+#define PLL_CONTROL 0x30
+#define TEMPERATURE_SENSOR_COMMAND 0x40
+#define TEMPERATURE_SENSOR_CALIBRATION 0x41
+#define TEMPERATURE_SENSOR_WRITE 0x42
+#define TEMPERATURE_SENSOR_READ 0x43
+#define VCOM_AND_DATA_INTERVAL_SETTING 0x50
+#define LOW_POWER_DETECTION 0x51
+#define TCON_SETTING 0x60
+#define TCON_RESOLUTION 0x61
+#define SOURCE_AND_GATE_START_SETTING 0x62
+#define GET_STATUS 0x71
+#define AUTO_MEASURE_VCOM 0x80
+#define VCOM_VALUE 0x81
+#define VCM_DC_SETTING_REGISTER 0x82
+#define PROGRAM_MODE 0xA0
+#define ACTIVE_PROGRAM 0xA1
+#define READ_OTP_DATA 0xA2
+
+// Display orientation
+#define ROTATE_0 0
+#define ROTATE_90 1
+#define ROTATE_180 2
+#define ROTATE_270 3
+
+extern const unsigned char lut_vcom0[];
+extern const unsigned char lut_vcom1[];
+extern const unsigned char lut_w[];
+extern const unsigned char lut_b[];
+extern const unsigned char lut_g1[];
+extern const unsigned char lut_g2[];
+extern const unsigned char lut_red0[];
+extern const unsigned char lut_red1[];
+
+class Epd : EpdIf {
+public:
+ unsigned long width;
+ unsigned long height;
+ unsigned int rotate;
+
+ Epd(PinName mosi,
+ PinName miso,
+ PinName sclk,
+ PinName cs,
+ PinName dc,
+ PinName rst,
+ PinName busy
+ );
+ ~Epd();
+ int Init(void);
+ void SendCommand(unsigned char command);
+ void SendData(unsigned char data);
+ void WaitUntilIdle(void);
+ void Reset(void);
+ void SetLutBw(void);
+ void SetLutRed(void);
+ void DisplayFrame(const unsigned char* frame_buffer_black, const unsigned char* frame_buffer_red);
+ void Sleep(void);
+ void SetRotate(int rotate);
+ void SetPixel(unsigned char *frame_buffer, int x, int y, int colored);
+ void SetAbsolutePixel(unsigned char *frame_buffer, int x, int y, int colored);
+ void DrawLine(unsigned char *frame_buffer, int x0, int y0, int x1, int y1, int colored);
+ void DrawHorizontalLine(unsigned char *frame_buffer, int x, int y, int width, int colored);
+ void DrawVerticalLine(unsigned char *frame_buffer, int x, int y, int height, int colored);
+ void DrawRectangle(unsigned char *frame_buffer, int x0, int y0, int x1, int y1, int colored);
+ void DrawFilledRectangle(unsigned char *frame_buffer, int x0, int y0, int x1, int y1, int colored);
+ void DrawCircle(unsigned char *frame_buffer, int x, int y, int radius, int colored);
+ void DrawFilledCircle(unsigned char *frame_buffer, int x, int y, int radius, int colored);
+ void DrawCharAt(unsigned char *frame_buffer, int x, int y, char ascii_char, sFONT* font, int colored);
+ void DrawStringAt(unsigned char *frame_buffer, int x, int y, const char* text, sFONT* font, int colored);
+
+
+};
+
+#endif /* EPD1IN54B_H */
+
+/* END OF FILE */