jacdac-ultrasonic get value

[smfox10]

1、First time to get the distance value, it shows undefined.

2、I was expecting to get a value of 1.93m, but I get 1.931232145, too many decimal places. Do I need my firmware to fix it?

[pelikhan]

Does your firmware implement the 'reading_resolution" register? It provides a hint to the user interface about the reading resolution.

const reading_resolution: u32 @ 0x108

https://github.com/microsoft/jacdac/blob/main/services/_system.md

[pelikhan]

fixed in v1.9.10