SeeedStudio PAJ7620U2, Руководство пользователя

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9/25/2015 Grove ­ Gesture v1.0 ­ Wiki
http://www.seeedstudio.com/wiki/Grove_­_Gesture_v1.0 7/10
void setup ()
{
paj7620Init () ;
}
This initialization code should be added to each demo.
2. Read data from PAJ7620 register via I2C
paj7620ReadReg(uint8_t addr, uint8_t qty, uint8_t data[])
addr: Register address
qty: Number of data to read, addr continuously increase.
data[]: The starting address(a variable or array) to store data.
void loop ()
{
uint8_t data = 0 ; // Read Bank_0_Reg_0x43/0x44 for gesture result.
paj7620ReadReg ( 0x43 , 1 , & data ) ; // When different gestures be detected, the variable 'data' will be set to different values by paj7620ReadReg(0x43, 1, &data).
if ( data == GES_UP_FLAG ) // When up gesture be detected,the variable 'data' will be set to GES_UP_FLAG.
digitalWrite ( 4 , HIGH ) ; // turn the LED on (HIGH is the voltage level)
if ( data == GES_DOWN_FLAG ) // When down gesture be detected,the variable 'data' will be set to GES_DOWN_FLAG.
digitalWrite ( 4 , LOW ) ; // turn the LED off by making the voltage LOW
}
We define some register data of gesture, refer to the following table.
Gesture Register Data
Register
Address
If Yes If Not
Up data==GES_UP_FLAG
0x43
Gesture
detected No gesture
detected
Down data==GES_DOWN_FLAG
Left data==GES_LEFT_FLAG
Right data==GES_RIGHT_FLAG
Forward data==GES_FORWARD_FLAG
Backward data==GES_BACKWARD_FLAG
Clockwise data==GES_CLOCKWISE_FLAG
Count
Clockwise
data==GES_COUNT_CLOCKWISE_FLAG
Wave data==GES_WAVE_FLAG 0x44