Merge pull request #433 from Foundation-Devices/SFT-2878-maximum-dens…

…ity-qr-code-shrinks-on-fe

SFT-2878: maximum density qr code shrinks on fe

extmod/foundation-rust/src/ur/encoder.rs

@@ -10,7 +10,6 @@ use minicbor::{Encode, Encoder};
 
 use crate::ur::{
     decoder::UR_DECODER_MAX_MESSAGE_LEN, registry::UR_Value, UR_MAX_TYPE,
-    UR_MIN_TYPE,
 };
 
 /// Maximum size of an encoded Uniform Resource.
@@ -32,7 +31,7 @@ pub const UR_ENCODER_MIN_STRING: usize = 224;
 /// parts that the message is divided into.
 /// cbindgen:ignore
 pub const UR_ENCODER_MAX_FRAGMENT_LEN: usize =
-    max_fragment_len(UR_MIN_TYPE, 1, UR_ENCODER_MAX_STRING);
+    max_fragment_len(UR_MAX_TYPE, usize::MAX, UR_ENCODER_MAX_STRING);
 
 /// Minimum fragment length.
 pub const UR_ENCODER_MIN_FRAGMENT_LEN: usize =
@@ -116,11 +115,7 @@ pub unsafe extern "C" fn ur_encoder_start(
     encoder.inner.start(
         value.ur_type(),
         message,
-        max_fragment_len(
-            value.ur_type(),
-            UR_ENCODER_MAX_SEQUENCE_COUNT,
-            max_chars,
-        ),
+        max_fragment_len(UR_MAX_TYPE, usize::MAX, max_chars),
     );
 }
 

extmod/foundation-rust/src/ur/mod.rs

@@ -14,10 +14,6 @@ static mut UR_ERROR: heapless::String<256> = heapless::String::new();
 /// cbindgen:ignore
 const UR_MAX_TYPE: &str = "crypto-coin-info";
 
-/// The minimum length of a UR type
-/// cbindgen:ignore
-const UR_MIN_TYPE: &str = "bytes";
-
 const fn max_message_len(max_characters: usize) -> usize {
     const MAX_UR_PREFIX: usize = "ur:".len() + UR_MAX_TYPE.len();