kdmukai

SeedSigner v0.8.7 Release Notes

The "Summer of SeedSigner" Release

....

Overview of Esp32 + lvgl + MicroPython + SeedSigner

Overview of each dev layer and their purpose.

Esp32 C/C++ resources

Include and compile hardware drivers for the platform.

Basic esp-idf components

Core project dependencies are declared in idf_component.yml.

OTF fonts

OTFs have to be converted to TTF first.

see: https://convertio.co/otf-ttf/

TTF fonts

Use the official web-based converter: https://lvgl.io/tools/fontconverter

Bpp:

Fund Keith Mukai's FOSS Work

I am the volunteer Lead Dev for SeedSigner. We are NOT a company. The FOSS project makes no profit whatsoever from our work.

Your support to help fund my open-source dev work would be hugely appreciated!

Holiday Donation Drive

lvgl

TODO:

Test basic lvgl_micropython compilation for esp32s3.
Begin incorporating SeedSigner-styled UI elements from: https://github.com/kdmukai/seedsigner-micropython
Test to what extent lvgl touch integration comes along "for free".

Live camera integration

Basic pure MicroPython camera driver / bindings tests.
Integration with lvgl overlay.

Backup and Restore a Raspi SD Card

Only works on linux. I've repeatedly tried to find a sequence that works on macOS but haven't had any success.

Set up PiShrink

This script will remove empty space from the backup img which ensures that you'll be able to write the img back out to an SD card that's the same size as the source SD card.

git clone https://github.com/Drewsif/PiShrink.git

	def start(self):
	"""Displays a screensaver until user presses a button or touch"""
	anim_frame = 0
	initial_offset = (TOTAL_LINES - len(SPLASH)) // 2
	fg_color = theme.fg_color
	bg_color = theme.bg_color
	self.ctx.display.clear()
	button_press = None

	min_distance = 5 # fixed chars or rows

	"""
	Copy-paste of various mods to the ST7789 driver to facilitate testing.
	"""

	# Gamma curve constants for ST7789 display
	# Each tuple contains (positive_gamma_values, negative_gamma_values)
	GAMMA_CURVES = [
	# Original SeedSigner gamma curve for the Waveshare display hat
	(
	[0xD0, 0x04, 0x0D, 0x11, 0x13, 0x2B, 0x3F, 0x54, 0x4C, 0x18, 0x0D, 0x0B, 0x1F, 0x23],

	"""
	Bitcoin Power Law:
	1.0117e-17 * (days since genesis block)^5.82

	Bitcoin Power Law Floor:
	(power law) * 0.42

	Note: Model projections said to be invalid beyond 2040.
	"""
	import argparse

	#!/bin/bash

	# Requires: apt install time
	export APP_REPO = https://github.com/kdmukai/seedsigner.git
	export APP_BRANCH = 0.8.6

	touch results.txt
	for device in pi0 pi02w pi2 pi4
	do
	ccache -d /root/.buildroot-ccache --zero-stats