matc 0.1.2

Matter protocol library (controller side)
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157

//! Matter TLV encoders and decoders for Illuminance Measurement Cluster
//! Cluster ID: 0x0400
//!
//! This file is automatically generated from IlluminanceMeasurement.xml

use crate::tlv;
use anyhow;
use serde_json;


// Enum definitions

#[derive(Debug, Clone, Copy, PartialEq, Eq, serde::Serialize, serde::Deserialize)]
#[repr(u8)]
pub enum LightSensorType {
    /// Indicates photodiode sensor type
    Photodiode = 0,
    /// Indicates CMOS sensor type
    Cmos = 1,
}

impl LightSensorType {
    /// Convert from u8 value
    pub fn from_u8(value: u8) -> Option<Self> {
        match value {
            0 => Some(LightSensorType::Photodiode),
            1 => Some(LightSensorType::Cmos),
            _ => None,
        }
    }

    /// Convert to u8 value
    pub fn to_u8(self) -> u8 {
        self as u8
    }
}

impl From<LightSensorType> for u8 {
    fn from(val: LightSensorType) -> Self {
        val as u8
    }
}

// Attribute decoders

/// Decode MeasuredValue attribute (0x0000)
pub fn decode_measured_value(inp: &tlv::TlvItemValue) -> anyhow::Result<Option<u16>> {
    if let tlv::TlvItemValue::Int(v) = inp {
        Ok(Some(*v as u16))
    } else {
        Ok(None)
    }
}

/// Decode MinMeasuredValue attribute (0x0001)
pub fn decode_min_measured_value(inp: &tlv::TlvItemValue) -> anyhow::Result<Option<u16>> {
    if let tlv::TlvItemValue::Int(v) = inp {
        Ok(Some(*v as u16))
    } else {
        Ok(None)
    }
}

/// Decode MaxMeasuredValue attribute (0x0002)
pub fn decode_max_measured_value(inp: &tlv::TlvItemValue) -> anyhow::Result<Option<u16>> {
    if let tlv::TlvItemValue::Int(v) = inp {
        Ok(Some(*v as u16))
    } else {
        Ok(None)
    }
}

/// Decode Tolerance attribute (0x0003)
pub fn decode_tolerance(inp: &tlv::TlvItemValue) -> anyhow::Result<u16> {
    if let tlv::TlvItemValue::Int(v) = inp {
        Ok(*v as u16)
    } else {
        Err(anyhow::anyhow!("Expected UInt16"))
    }
}

/// Decode LightSensorType attribute (0x0004)
pub fn decode_light_sensor_type(inp: &tlv::TlvItemValue) -> anyhow::Result<Option<LightSensorType>> {
    if let tlv::TlvItemValue::Int(v) = inp {
        Ok(LightSensorType::from_u8(*v as u8))
    } else {
        Ok(None)
    }
}


// JSON dispatcher function

/// Decode attribute value and return as JSON string
///
/// # Parameters
/// * `cluster_id` - The cluster identifier
/// * `attribute_id` - The attribute identifier
/// * `tlv_value` - The TLV value to decode
///
/// # Returns
/// JSON string representation of the decoded value or error
pub fn decode_attribute_json(cluster_id: u32, attribute_id: u32, tlv_value: &crate::tlv::TlvItemValue) -> String {
    // Verify this is the correct cluster
    if cluster_id != 0x0400 {
        return format!("{{\"error\": \"Invalid cluster ID. Expected 0x0400, got {}\"}}", cluster_id);
    }

    match attribute_id {
        0x0000 => {
            match decode_measured_value(tlv_value) {
                Ok(value) => serde_json::to_string(&value).unwrap_or_else(|_| "null".to_string()),
                Err(e) => format!("{{\"error\": \"{}\"}}", e),
            }
        }
        0x0001 => {
            match decode_min_measured_value(tlv_value) {
                Ok(value) => serde_json::to_string(&value).unwrap_or_else(|_| "null".to_string()),
                Err(e) => format!("{{\"error\": \"{}\"}}", e),
            }
        }
        0x0002 => {
            match decode_max_measured_value(tlv_value) {
                Ok(value) => serde_json::to_string(&value).unwrap_or_else(|_| "null".to_string()),
                Err(e) => format!("{{\"error\": \"{}\"}}", e),
            }
        }
        0x0003 => {
            match decode_tolerance(tlv_value) {
                Ok(value) => serde_json::to_string(&value).unwrap_or_else(|_| "null".to_string()),
                Err(e) => format!("{{\"error\": \"{}\"}}", e),
            }
        }
        0x0004 => {
            match decode_light_sensor_type(tlv_value) {
                Ok(value) => serde_json::to_string(&value).unwrap_or_else(|_| "null".to_string()),
                Err(e) => format!("{{\"error\": \"{}\"}}", e),
            }
        }
        _ => format!("{{\"error\": \"Unknown attribute ID: {}\"}}", attribute_id),
    }
}

/// Get list of all attributes supported by this cluster
///
/// # Returns
/// Vector of tuples containing (attribute_id, attribute_name)
pub fn get_attribute_list() -> Vec<(u32, &'static str)> {
    vec![
        (0x0000, "MeasuredValue"),
        (0x0001, "MinMeasuredValue"),
        (0x0002, "MaxMeasuredValue"),
        (0x0003, "Tolerance"),
        (0x0004, "LightSensorType"),
    ]
}