[Nanopb] Basic type proto sample - Decode sample code

[Nanopb for Google protobuf] Basic type proto sample - Decode sample code

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※ 관련글

• Google Protobuf

1. [Google Protobuf] For Java in Android Studio - 설치 및 proto 파일 컴파일
2. [Google Protobuf] For Java in Android Studio - Gen Java 파일 Android Studio 적용
3. [Google Protobuf] For Java in Android Studio - Basic example code 기본 소스 코드 사용 샘플
4. [Google Protobuf] For C++ in Linux - Settings C++ 빌드 환경 만들기
5. [Google Protobuf] For C++ in Linux - Basic example code 기본 소스 코드 사용 샘플

• Nanopb Basic type value example

6. [Nanopb for Google protobuf] Basic type proto sample
7. [Nanopb for Google protobuf] Basic type proto sample - Sample proto file
8. [Nanopb for Google protobuf] Basic type proto sample - Encode sample code
9. [Nanopb for Google protobuf] Basic type proto sample - Decode sample code

• Nanopb String / bytes value example

10. [Nanopb for Google protobuf] String/Bytes type proto
11. [Nanopb for Google protobuf] String/Bytes type proto - Sample proto file 
12. [Nanopb for Google protobuf] String/Bytes type proto - Encode example code 1
13. [Nanopb for Google protobuf] String/Bytes type proto - Encode example code 2
14. [Nanopb for Google protobuf] String/Bytes type proto - Decode example code

• Nanopb basic submsg example

15. [Nanopb for Google protobuf] Sub message - Example proto file
16. [Nanopb for Google protobuf] Sub message - Encode example code
17. [Nanopb for Google protobuf] Sub message - Decode example code

• Nanopb array submsg value example

18. [Nanopb for Google protobuf] Array Sub message - Example proto file
19. [Nanopb for Google protobuf] Array Sub message - Encode example code
20. [Nanopb for Google protobuf] Array Sub message - Decode example code

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Decode sample code

void testDecode(int encodeSize, uint8_t* buffer) {
    //Decode 시키기 위한 inStream 생성
    pb_istream_t stream;
 
    /* Construct a pb_istream_t for reading from the buffer */
    stream = pb_istream_from_buffer(buffer, encodeSize);
 
    /* Uses _init_default to just make sure that the macro works. */
    TestBasicTypes msg = TestBasicTypes_init_default;
 
    /* [Optional] Fill with garbage to better detect initialization errors */
    memset(&msg, 0xAA, sizeof(msg));
 
    // pb decode 함수를 사용하여 bytes 를 객체화 시킨다. 실패 시 false 가 출력.
    if (!pb_decode(&stream, TestBasicTypes_fields, &msg)) {
        Serial.print("TestBasicTypes Decoding failed: ");
        Serial.print(PB_GET_ERROR(&stream));
        Serial.println("");
        return;
    } else {
        //Decode 된 메시지 를 출력시켜 확인한다.
        Serial.print("TestBasicTypes Decoding OK");
        Serial.print(" testInt32:");
        Serial.print(msg.testInt32);
        Serial.println("");
        Serial.print(" testInt64:");
        Serial.print((long) (msg.testInt64));
        Serial.println("");
        Serial.print(" testFloat:");
        Serial.print(msg.testFloat);
        Serial.println("");
        Serial.print(" testDouble:");
        Serial.print(msg.testDouble);
        Serial.println("");
        Serial.print(" testUint32:");
        Serial.print(msg.testUint32);
        Serial.println("");
    }
 
}