From 8b1ef0ce3a520d994ed73117069cc7a49fb75ca4 Mon Sep 17 00:00:00 2001
From: Sam Anthony <sam@samanthony.xyz>
Date: Wed, 17 Sep 2025 09:09:05 -0400
Subject: usbcom go rewrite

---
 doc/protocol | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'doc/protocol')

diff --git a/doc/protocol b/doc/protocol
index c7c4849..e99aca9 100644
--- a/doc/protocol
+++ b/doc/protocol
@@ -1,5 +1,5 @@
 <command> ::= <opcode> " " <args> "\n"
-<response> ::= (<retval> | "nack") "\n"
+<response> ::= (<retval> | "nack" <err>) "\n"
 
 Echo:
 <opcode> ::= "e"
@@ -22,3 +22,5 @@ Read EEPROM:
 <bytes> ::= <byte> <bytetail> | ""
 <bytetail> ::= " " <byte> <bytetail> | ""
 <byte> ::= "00"--"FF"
+<err> ::= <char> <err> | ""
+<char> ::= [a-zA-Z0-9_ ]
-- 
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