pyboard
driftrtc.py sends millis to linux hostdrift.c
driftrtcms.py compare pyb.millis() to RTC
driftrtccb.py use RTC wakeup and pyb.micros
hostdrift.c reads ms timestamps on /dev/ttyAMC0
gpspps.py pyboard drift check with GPS pps on X1
gpsrtc.py RTC drift check with GPS pps on X1
setrtc.py set RTC from UNIX date
lowerpower.py measure current for various power settings
htu21d.py class for HTU21D temp/humidity I2C sensor
sdperf2.py time IO for SD, SPI SD, FLASH using timer2
spiflash.py read/write/erase tests on 1MB SPI flash
wizntp.py wiz820io ether example of setting RTC with NTP(UDP)
IRremote/ IR remote transmitter/receiver for Sony