# Sequencer

Process

Logic block representing a sequence

Sequencer

Fwd

Bwd

Rst

Off

Sequencer ver: 1

# Inputs

ID	Abbrev	Name	Type	Default
`forward`	`Fwd`	Forward	BOOLEAN	`false`
`backward`	`Bwd`	backward	BOOLEAN	`false`
`reset`	`Rst`	reset	BOOLEAN	`false`

# Outputs

ID	Abbrev	Name	Type	Default
`off`	`Off`	Off	BOOLEAN	`true`
`o1`	`O1`	Output #1	BOOLEAN	`false`
`o2`	`O2`	Output #2	BOOLEAN	`false`
`o3`	`O3`	Output #3	BOOLEAN	`false`
`o4`	`O4`	Output #4	BOOLEAN	`false`
`o5`	`O5`	Output #5	BOOLEAN	`false`
`o6`	`O6`	Output #6	BOOLEAN	`false`
`o7`	`O7`	Output #7	BOOLEAN	`false`
`o8`	`O8`	Output #8	BOOLEAN	`false`

# Configuration

ID	Name	Type	Default	Unit	Description
`max_index`	Max index	NUMBER	`8`

# State

ID	Name	Type	Default	Unit	Description
`sequence_index`	Sequence index	NUMBER	`0`

# Source Code

View Volang source

outputs_count = 8
value = input::value()
// react only on a falling edge / after the pulse
if (value == true) {
    return
}

fn reset_all(count) {
    i = 1
    while (i <= count) {
        output::set(str::fmt("o{}", i), false)
        i += 1
    }
    output::set("off", false)
}

fn move(index, steps) {
    max_index = config::get("max_index")
    new_index = index + steps
    if (new_index > max_index) {
        new_index = 0
    } else if (new_index < 0) {
        new_index = max_index
    }

    state::set("sequence_index", new_index)
    return new_index
}

channel = input::channel()
index = state::get("sequence_index")

new_index = index

if (channel == "reset") {
    new_index = move(index, -index)
}

if (channel == "forward") {
    new_index = move(index, 1)
}

if (channel == "backward") {
    new_index = move(index, -1)
}

reset_all(outputs_count)
if (new_index == 0) {
    output::set("off", true)
} else {
    output::set(str::fmt("o{}", new_index), true)
}