Powershell: how to intialize an array of bytes like in C?

Question

In C you can do something like:

uint16_t datalen = 1024;
uint16_t crc = 0x1021;
uint8_t myHeader = {0x41, 0xBE, 0x21, 0x08, datlen/256, datalen%256, crc/256, crc%256};

Now, how can I accomplish an array initialization like this in Powershell?

I want to send the byte array later to serial port.

score 2 · Accepted Answer · answered Apr 18 '20 at 09:40

2

Not so different:

[uint16]$datalen = 1024
[uint16]$crc = 0x1021
[byte[]]$myHeader = 0x41, 0xBE, 0x21, 0x08, ($datalen/256), ($datalen%256), ($crc/256), ($crc%256)

answered Apr 18 '20 at 09:40

Theo

Thanks, that works. I missed the variable casting to [uint16] before the byte array. – stev Apr 18 '20 at 10:40
Hm, I was to early to take it as good, the problem is with the division, it is performed by rounding up the result, which is not wanted. How to avoid that? – stev Apr 18 '20 at 10:50
I think I have to use [Math]::Floor(), rigth? It is a bit of pain because it reduces readability, but at least it works. – stev Apr 18 '20 at 10:56
See [round fraction to an integer](https://stackoverflow.com/a/48893799/1701026) – iRon Apr 18 '20 at 15:58

1 Answers1