ISDU cached mode

Owned by Dmytro Svitlychnyi
Last updated: May 23, 2022
1 min read

iqInterface FW Version 1.2.3.20 is required

This mode is useful, when ISDU data is used only for writing (reading data in this mode is not supported), for example BLOB writing or Firmware update

The difference with and without cached mode with firmware update:

Mode

Device1: COM3

Min. cycle time:           6,8 ms

On Request length:     2 bytes

Process Data Length: 0 byte

Firmware update 64 kb,

Transmission only time – the code will not be written into flash

Normal mode

Cached ON

Improvement

52,66 sec

17,7 sec

66 %

Mode

Device2:  COM3

Min. cycle time:          2,3 ms

On Request length:    32 bytes

Process Data Length: 0 byte

Firmware update 256 kb

Normal mode

Cached ON

Improvement

201,97 sec

86,25 sec

57 %

/** * \brief Write BLOB with active cache * iqInterface FW Version 1.2.3.20 is required * * \param[in] uiPortNo COM or virtual ethernet port number of iqInterface * \param[in] blobId BLOB Id * \param[in] buffer BLOB buffer * \param[in] bufferSize BLOB buffer size * \param[out] cpErrMsg an error message (minimum 256 symbols!) */ int16 mst_WriteBlob2(uint16 uiPortNo, int16 blobId, uchar08* buffer, ulong32 bufferSize, unsigned char is_cached, char08* cpErrMsg);