Fix notes on firmware version length.

Author: thejpster

neotron-bmc-commands/README.md

@@ -57,9 +57,9 @@ The three bytes are `major`, `minor` and `patch`. This document corresponds to
 ### Address 0x01 - Firmware Version
 
 This read-only register returns the firmware version of the NBMC, as a UTF-8
-string. The register length is always 64 bytes, and the string is null-padded.
+string. The register length is always 32 bytes, and the string is null-padded.
 We also guarantee that the firmware version will always be less than or equal to
-63 bytes, so you can also treat this string as null-terminated.
+31 bytes, so you can also treat this string as null-terminated.
 
 An official release will have a version string of the form `tags/v1.2.3`. An
 unofficial release might be `heads/develop-dirty`. It is not recommended that

neotron-bmc-pico/build.rs

@@ -28,7 +28,7 @@ fn main() {
 	let mut output = version_output.stdout;
 	output.pop();
 
-	if output.len() > 32 {
+	if output.len() >= 32 {
 		panic!("Version too long!");
 	}