USB_Host_Shield_2.0/examples/HID/scale/scale_rptparser.h

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#if !defined(__SCALERPTPARSER_H__)
#define __SCALERPTPARSER_H__
#include <max_LCD.h>
#include <usbhid.h>
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/* Scale status constants */
#define REPORT_FAULT 0x01
#define ZEROED 0x02
#define WEIGHING 0x03
#define WEIGHT_VALID 0x04
#define WEIGHT_NEGATIVE 0x05
#define OVERWEIGHT 0x06
#define CALIBRATE_ME 0x07
#define ZERO_ME 0x08
/* input data report */
struct ScaleEventData
{
uint8_t reportID; //must be 3
uint8_t status;
uint8_t unit;
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int8_t exp; //scale factor for the weight
uint16_t weight; //
};
class ScaleEvents
{
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Max_LCD* pLcd;
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void LcdPrint( const char* str );
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public:
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ScaleEvents( Max_LCD* pLCD );
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virtual void OnScaleChanged(const ScaleEventData *evt);
};
#define RPT_SCALE_LEN sizeof(ScaleEventData)/sizeof(uint8_t)
class ScaleReportParser : public HIDReportParser
{
ScaleEvents *scaleEvents;
uint8_t oldScale[RPT_SCALE_LEN];
public:
ScaleReportParser(ScaleEvents *evt);
virtual void Parse(USBHID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf);
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};
#endif // __SCALERPTPARSER_H__