Error handling patterns

[charathram]

This is a general question and I'm posting it here because I don't see a discussion forum anywhere. Apologies in advance.

How does one handle errors from TinyGo programs? For instance, if I were writing a regular Go program, I might do something like:

v, err := doSomething()
if err != nil {
    fmt.Println("An error occurred")
    os.Exit(1)
}

Obviously, that doesn't make sense in the context of an embedded program. So, are there any typical error handling patterns that people follow when writing TinyGo programs for microcontrollers?

[deadprogram]

Hello @charathram

One pattern I have used myself, is to call a "failMessage()` function in that case, which outputs something useful via serial port for debugging.

For example, see https://github.com/tinygo-org/drivers/blob/release/examples/wifinina/mqttclient/main.go#L74

[charathram]

Thank you! That's very helpful.

[dgryski]

Should this pattern be documented somewhere or can we close this bug?

[charathram]

It might be useful to have it documented. I can open a PR on the docs site for it - I just need to figure out the appropriate location.