esp8266+epaper2in13 do not work #16
Description
I am try to drive epaper with esp8266,
but failed...
Hardware
- ESP 8266 C2102
- waveshare epaper 2in13
Code
- main.py
import epaper2in13
from machine import Pin, SPI
# EPD 2in13 8PIN
# ESP 8266 40PIN
#
# | EPD 8PIN | 8266 GPIO | 8266 PIN | |
# | -------- | --------- | -------- | ----------------------------------------------------------------- |
# | VCC | | | 3.3V |
# | GND | | | GND |
# | DIN | gpio 13 | D7 | MOSI pin of SPI interface, data transmitted from Master to Slave. |
# | CLK | gpio 14 | D5 | SCK pin of SPI interface, clock input |
# | CS | gpio 15 | D8 | Chip select pin of SPI interface, Low active |
# | DC | gpio 0 | D3 | Data/Command control pin (High: Data; Low: Command) |
# | RST | gpio 2 | D4 | Reset pin, low active |
# | BUSY | gpio 4 | D2 | Busy pin |
spi = SPI(1, baudrate=80000000, polarity=0, phase=0)
cs = Pin(15)
dc = Pin(2)
rst = Pin(4)
busy = Pin(5)
e = epaper2in13.EPD(spi, cs, dc, rst, busy)
e.init()
w = 128
h = 250
x = 0
y = 0
# --------------------
# clear display
e.clear_frame_memory(b'\xFF')
e.display_frame()
# use a frame buffer
# 128 * 250 / 8 = 4000 - thats a lot of pixels
import framebuf
buf = bytearray(128 * 250 // 8)
fb = framebuf.FrameBuffer(buf, 128, 250, framebuf.MONO_HLSB)
black = 0
white = 1
fb.fill(white)
fb.text('Hello World',30,0,black)
fb.pixel(30, 10, black)
fb.hline(30, 30, 10, black)
fb.vline(30, 50, 10, black)
fb.line(30, 70, 40, 80, black)
fb.rect(30, 90, 10, 10, black)
fb.fill_rect(30, 110, 10, 10, black)
for row in range(0,37):
fb.text(str(row),0,row*8,black)
fb.text('Line 36',0,288,black)
e.set_frame_memory(buf, x, y, w, h)
e.display_frame()the code could run with no error message.
but epaper has no response.