SENA HD1200 - Manual (Page 32)

Starter Kit and User Manual for the HelloDevice 1200
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Write INAddr
Interrupt
Write the address of data written
Write INLen Write the length of data written
Write data
Generate interrupt
Return
Write 0xAA to INTR_L
Update data in Dual-Port RAM
Figure 6.3. User device is generating interrupt into the HD1200
Read OUTAddr
Interrupt
into user device
- INTR_L register = 0xAA
- nIRQ pin = LOW
User device reads
specified address of Dual-Port RAM.
Read OUTLen User device reads
specified length of the data.
Do something
User device reads data
From specified address By specified length
Return
Read data
User device perform certain tasks
by using the data read
Figure 6.4. User device data handling process after HD1200 generates interrupt into the user device