Merge pull request #167 from kossnikita/write-constraint-register

Write constraint register

Author: burrbull

src/html/html_cli.rs

@@ -351,6 +351,7 @@ fn parse_register(
         "description": rtag.description.as_deref().map(sanitize),
         "resetValue": format!("0x{:08X}", rtag.properties.reset_value.unwrap_or_default()),
         "access": raccs,
+        "writeConstraint": rtag.write_constraint,
         "fields": fields,
         "table": table,
         "fields_total": register_fields_total,

src/html/template.html

@@ -171,11 +171,15 @@ <h4>
               </a>
             </h4>
             <p>{{ register.description }}</p>
-            <p>Offset: {{ register.offset }}, size: {{ register.size }}, reset: {{ register.resetValue }}, access: {{ register.access }}</p>
+            <p>
+              Offset: {{ register.offset }}, size: {{ register.size }}, reset: {{ register.resetValue }}, access: {{ register.access 
+              }}{% if register.writeConstraint.range %}, allowed values: {{ register.writeConstraint.range.minimum }}-{{ register.writeConstraint.range.maximum }}{% endif %}
+            </p>
             <div class="progress">
 
               <div class="progress-bar progress-bar-success" style="width: {{ register.progress }}%"></div>
             </div>
+            {% if register.fields_total > 0 %}
             <p>
               <em>
                 {{ register.fields_documented}}/{{ register.fields_total }}
@@ -215,6 +219,7 @@ <h4>
                 </div>
               </div>
             </div>
+            {% endif %}
             <div class="container fields" id="{{ pname }}-{{ register.name }}-fields">
               {% for field in register.fields %}
               <div class="row">

src/patch/mod.rs

@@ -9,7 +9,7 @@ use svd_parser::svd::{
     AddressBlockUsage, ClusterInfo, ClusterInfoBuilder, Cpu, CpuBuilder, Endian, EnumeratedValue,
     EnumeratedValues, EnumeratedValuesBuilder, FieldInfo, FieldInfoBuilder, Interrupt,
     PeripheralInfo, PeripheralInfoBuilder, RegisterCluster, RegisterInfo, RegisterInfoBuilder,
-    RegisterProperties, Usage, ValidateLevel,
+    RegisterProperties, Usage, ValidateLevel, WriteConstraint, WriteConstraintRange,
 };
 use svd_parser::SVDError::DimIndexParse;
 use svd_rs::{DimElement, DimElementBuilder, MaybeArray};
@@ -423,6 +423,32 @@ fn make_register(radd: &Hash) -> Result<RegisterInfoBuilder> {
     if let Some(address_offset) = radd.get_i64("addressOffset")? {
         rnew = rnew.address_offset(address_offset as u32);
     }
+
+    if let Some(write_constraint) = radd
+        .get(&"_write_constraint".to_yaml())
+        .or_else(|| radd.get(&"writeConstraint".to_yaml()))
+    {
+        let wc = match write_constraint {
+            Yaml::String(s) if s == "none" => {
+                // Completely remove the existing writeConstraint
+                None
+            }
+            Yaml::String(s) if s == "enum" => {
+                // Only allow enumerated values
+                Some(WriteConstraint::UseEnumeratedValues(true))
+            }
+            Yaml::Array(a) => {
+                // Allow a certain range
+                Some(WriteConstraint::Range(WriteConstraintRange {
+                    min: a[0].i64()? as u64,
+                    max: a[1].i64()? as u64,
+                }))
+            }
+            _ => return Err(anyhow!("Unknown writeConstraint type {write_constraint:?}")),
+        };
+        rnew = rnew.write_constraint(wc);
+    }
+
     Ok(rnew)
 }