typedef struct __attribute__((packed)){
uint32_t u32CalStringLen; // Cal Name length (Non-null terminated)
char cCalStringPtr[u32CalStringLen]; // Cal Name string without null termination
uint32_t u32CalReadCount; // Cal array element count
uint32_t u32CalDataType; // Cal data type 0->BYTE, 1->SHORT, 2->LONG, 3->FLOAT. Used for type-casting