usage

Any number of commands dan be given to load. Commands will be executed in order.

./load comand [command [command [command] [...]]]

commands

• on - enables loads

• off - disables load

• start - starts printing status into uart (internal thing, needs to be enabled once)

• stop - stops printing status into uart (may prevent this project from working if used)

• slp - sleeps for some time (for example to wait for the current to stabilize before taking measurement)

• data - prints one status data line in loads native format

• settings - prints load settings in loads native format

• getVolts - prints voltage e.g. 5.23

• getAmps - prints current e.g. 0.50

• getWatts - prints power e.g. 34.95

• getAmpHours - prints capacity in Ah e.g. 0.002

• getTime - prints operation time in HH:mm format

• getCsvVoltsAmps - prints volts and amps

• getCsvRow - print comma separated values of set_current, measured_current, voltage and power

examples

./load off slp getCsvRow 3.14A on slp getCsvRow off

In this example

• off - load wil be switched off (in case its not of already).
• slp - sleep for few seconds so that its really off
• getCsvRow - prints csv record with no load applied to record open voltage
• 3.14A - sets load current
• on - switches on the load
• slp - waits for current to stabilize
• getCsvRow - prints another csv line with data under load
• off - switches load off for good measure.

examlpe test with graph

./sample_tests/full_range_test.sh > test.csv \
&& ./sample_plots/single_voltage_current_400x300.gnuuplot "title of the test" > test.png

Output from previous example also can be saved to csv file and used to plot the graph.