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POexpected declaration specifiers or '...' before 'MLD_PACKET'
 

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  1. POexpected declaration specifiers or '...' before 'MLD_PACKET'
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    <p>Wherever I include a certain <code>commands.h</code> header file, in any place apart from <code>commands.c</code>, this error is thrown up by the compiler. <code>commands.h</code> contains function prototypes which make use of structs defined in <code>instrument.h</code>, specifically:</p> <pre><code>void readConfig(PSTATPLUS_CONFIG* pStatConfig_p, MLD_PACKET* rxPacketUart2_p); void readState(PSTATPLUS_STATE* pStatState_p, MLD_PACKET* rxPacketUart2_p); void writeConfig(PSTATPLUS_CONFIG* pStatConfig_p, MLD_PACKET* rxPacketUart2_p); void writeState(PSTATPLUS_STATE* pStatState_p, MLD_PACKET* rxPacketUart2_p); </code></pre> <p><code>PSTATPLUS_CONFIG</code> and <code>PSTATPLUS_STATE</code> are defined as such, in <code>instrument.h</code>:</p> <pre><code>typedef struct { float signalAmplitude; // Signal Amplitude float signalOffset; // Signal Offset unsigned char waveType; // Waveform Type float startFreq; // Frequency Start float stopFreq; // Frequency Stop unsigned int numIncrements; // Number of Increments unsigned char scale; // Linear(0) or log(1) float stepDelay; // Step Delay }PSTATPLUS_CONFIG; typedef struct { // Current biosensor status unsigned char scan; // Scan status (on/off) unsigned char sample; // Sample status (on/off) unsigned int currentIncrement; // Current scan increment unsigned char gain; // Current gain setting float iValue; // I voltage float qValue; // Q voltage unsigned int sampleDivider; // 1 takes every ADC sample, 2 takes every 2nd ADC sample, 3 takes every 3rd ADC samp... n takes every nth. 0 stops data collection. unsigned int totalSamples; // total number of samples wanted to complete one measurement. }PSTATPLUS_STATE; </code></pre> <p>I require some definitions written in the <code>commands.h</code> header to be accessible to my <code>instrument.c</code> file but as mentioned, every time I include <code>commands.h</code> in there, the compiler produces that error. I've tried including <code>commands.h</code> in some of my other source files, the same thing keeps happening. Any help is appreciated.</p> <p>Dan</p>
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    1. COWhere is MLD_PACKET defined?
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    2. COLooks like you'll need either to include the header where `MLD_PACKET` is declared in your `commands.h`, or have a forward declaration for it.
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