joh2511/fw-clock

Common firmware for several stm32f10x based clock projects

fw-clock

Common firmware for several stm32f10x based clock projects

Commandline Interface

The clock offers a commandline interface over a serial port.

Setting the time

Since the clock is working with UTC inside, the time needs to be set in UTC. Conversion to the relevant timezone is enabled later by setting the timezone. The time can be set with the rtc_write command.

rtc_write <yr> <mon> <day> <hr> <min> <sec>

Setting the timezone

The timezone can be set with the tz_write command.

tz_write (std|dst) <offset> <hour> <dow> <week> <month>

• offset (offset in minutes for the given rule)
• hour (hour of day, where the new time starts)
• dow (dow day of week, 0=monday ... 6=sunday)
• week (week of month, 1=first ... 3=third, 0=last)
• month (month in year, 1=january ... 12=december)

For Germany just type:

tz_write std 60 3 6 0 10

tz_write dst 120 2 6 0 3

Most common Daylight Saving Time rules:

Timezone	Name	Offset	Month	Week	Day of week	Hour
Europe/London	WET	UTC+0	March	last	Sunday	1
	WEST	UTC+1	October	last	Sunday	1
Europe/Berlin	MEZ	UTC+1	March	last	Sunday	1
	MESZ	UTC+2	October	last	Sunday	1
Europe/Athens	EET	UTC+2	March	last	Sunday	1
	EEST	UTC+3	October	last	Sunday	1
Europe/Moscow	MSK	UTC+4

License

Some parts of the firmware are based on the LPC11U_LPC13U_CodeBase of Kevin Townsend. Some files are modified and should be commented so. Some other files adapt the scheme of coding mostly used in the codebase.

Where possible, all code is provided under a BSD style license, but each file is individually licensed and you should ensure that you fully understand the license terms and limitations of any files you use in your project.