libwebsockets/minimal-examples/embedded/esp32/esp-heltec-wb32/scan/scan.sh

#!/bin/bash

convert -size 128x64 /tmp/128x64.png -monochrome output.bmp
dd if=output.bmp bs=1 skip=130 | hexdump -Cv | tr -s ' ' | cut -d' ' -f2-17 | grep ' ' | sed "s/^/0x/g" | sed "s/\ /,\ 0x/g" > pic.h.1
cat pic.h.1 | sed "s/\$/,/g" > pic.h

gcc -o scan scan.c && ./scan > ../banded-img.h
drivers: initial generic gpio and i2c plus bitbang Make a start on generic peripheral and bus drivers to provide meta-functionality regardless of platform. On the one hand this simply provides... - bitbang i2c on top of esp-idf gpio apis - ssd1306 oled chip driver as found on Heltec WB32 - modifications to the minimal example test for esp32 to use that ... on the other hand, those capabilities are provided by creating: - an abstract i2c class object - an abstract gpio class object - i2c class implementation using the abstract gpio for bitbang - an abstract display class object - an abstract display state (brightness, animated change, on/off/init tracking, autodim after inactive, auto-off / blanking after inactive) ... with the intention, eg, you only have to add a platform implementation for the gpio to be able to use the i2c-based display drivers and state handling, and i2c bitbang, without any other modifications. 2020-06-10 19:17:08 +01:00			`#!/bin/bash`

			`convert -size 128x64 /tmp/128x64.png -monochrome output.bmp`
			`dd if=output.bmp bs=1 skip=130 \| hexdump -Cv \| tr -s ' ' \| cut -d' ' -f2-17 \| grep ' ' \| sed "s/^/0x/g" \| sed "s/\ /,\ 0x/g" > pic.h.1`
			`cat pic.h.1 \| sed "s/\$/,/g" > pic.h`

			`gcc -o scan scan.c && ./scan > ../banded-img.h`