main.cpp

    #include "Arduino.h"
#include "config.h"
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1331.h>
#include <SPI.h>


#define sclk 13
#define mosi 11
#define cs   10
#define rst  9
#define dc   8


#define	BLACK           0x0000
#define	BLUE            0x001F
#define	RED             0xF800
#define	GREEN           0x07E0
#define CYAN            0x07FF
#define MAGENTA         0xF81F
#define YELLOW          0xFFE0
#define WHITE           0xFFFF



Adafruit_SSD1331 display = Adafruit_SSD1331(cs, dc, rst);



void setup() {
  Serial.begin(SERIAL_BAUD);
  display.begin();
  display.fillScreen(BLACK);
  // display.setCursor(0,0);
  // display.setTextColor(RED);
  // display.setTextSize(1);
}



int incoming;
uint8_t idata[] = { 0, 0 };
uint16_t idata16;
int x=0;
int y=0;

void loop() {
  //if (Serial.available() > 0) {
    // incoming = Serial.read();
    // if (incoming==244){
      //display.fillScreen(BLACK);

      display.setAddrWindow(0, 0, 96, 64);
      display.startWrite();

      for (int i=0; i<6144; i++){

        if (Serial.available() > 0){
          idata[0] = Serial.read();
        }
        if (Serial.available() > 0){
          idata[1] = Serial.read();
        }
        idata16 = ( (uint16_t) idata[1] << 8) | idata[0];
        display.writePixel(x, y, idata16);
        x++;
        if (x>93){
          display.endWrite();
          display.startWrite();
          x=0;
          y++;
        }
        //display.println(i);
      }
      display.endWrite();
    //}

  //}
}

mm.py

#!/usr/bin/env python

import sys
import struct
import serial
import time

SERIAL_PORT = "/dev/ttyUSB3"
SERIAL_BAUD = 115200


try:
    f = open(sys.argv[1], "rb")
except:
    print("error loading file")
    sys.exit(1)

try:
    ser = serial.Serial(port=SERIAL_PORT, baudrate=SERIAL_BAUD)
except:
    print("error opening serial port")
    sys.exit(1)


def read16(f):
    return struct.unpack("=H", f.read(2))[0]

def read32(f):
    return struct.unpack("=I", f.read(4))[0]


header = read16(f)

if header != 19778:
    print("not a bmp file")
    sys.exit(1)

bmp_size     = read32(f)
bmp_creator  = read32(f)
bmp_offset   = read32(f)
bmp_head_sz  = read32(f)
bmp_width    = read32(f)
bmp_height   = read32(f)
bmp_planes   = read16(f)
bmp_depth    = read16(f)
bmp_compress = read32(f)

bmp_num_px   = bmp_width*bmp_height

print("size={0} offset={1} head_sz={2} width={3} height={4} planes={5} depth={6} compress={7} px={8}".format(
    bmp_size,
    bmp_offset,
    bmp_head_sz,
    bmp_width,
    bmp_height,
    bmp_planes,
    bmp_depth,
    bmp_compress,
    bmp_num_px
))



f.seek(bmp_offset, 0)
data = f.read(bmp_num_px*2)
data16 = struct.unpack("={0}H".format(bmp_num_px), data)


time.sleep(1)

ser.reset_input_buffer()
ser.write( struct.pack("=B", 244) )

# for i in range(0,94):
#     px = data16[i]
#     sdata = struct.pack("=H", px)
#     ser.write(sdata)

print(len(data16))
for px in data16:
    sdata = struct.pack("=H", px)
    ser.write(sdata)