FBConsole

Framebuffer console class for MicroPython.

You can redirect REPL to any framebuffer devices.

Usage

The example below duplicates REPL output to SSD1306 OLED connected to ESP32 via I2C(SDA=Pin22, SCL=Pin21).

from machine import Pin, I2C
from ssd1306 import SSD1306_I2C
i2c = I2C(scl=Pin(21), sda=Pin(22), freq=400000)
oled = SSD1306_I2C(128, 64, i2c)

from fbconsole import FBConsole
import os
scr = FBConsole(oled)
os.dupterm(scr)        # redirect REPL output to OLED
help()                 # and print something
os.dupterm(None)       # then disconnect OLED from REPL
scr.cls()              # and clear OLED screen

ST7735 Wrapper

ST7735fb.py is a wrapper class to use FBConsole with ST7735-based small TFT LCD. It provides some of FrameBuffer class APIs necessary to use FBConsole. Use this with ST7735 driver for MicroPython. Only LCDs with ST7735S(and maybe ST7735R) are supported because this wrapper class requires hardware scroll functionality.

petme128 font

petme128.py is a font converted from petme128-font.c used in the framebuf class of MicroPython.

ST7735fb usage

# This example is for ESP32 + ST7735S TFT LCD
from ST7735 import TFT
from machine import SPI,Pin
spi = SPI(2, baudrate=20000000, polarity=0, phase=0, sck=Pin(14), mosi=Pin(13), miso=Pin(12))
tft=TFT(spi,16,17,18)
tft.initb2()
tft.rgb(True)

# Assign 2 pixels for fixed and invisible area
# (ST7735S frame buffer vertical size is 162 pixels)
tft.setvscroll(1, 1)

# Wrapper object for FBConsole
from ST7735fb import TFTfb
from petme128 import petme128
fb = TFTfb(tft, petme128)

# redirect MicroPython terminal to ST7735
from fbconsole import FBConsole
scr = FBConsole(fb, TFT.BLACK, TFT.WHITE)

import os
os.dupterm(scr)