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MasterPlayer / adxl345-sv

FPGA implemented component for realize register file in FPGA resources with request and sends data to ADXL345 device
MIT License
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Interrupt processing in hardware extension #21

Closed MasterPlayer closed 2 years ago

MasterPlayer commented 2 years ago

Need add support for interrupt processing in hardware, it might be additional state in finite state machine

Algorithm: (hardware)

  1. INTR signal asserted
  2. FSM goes from IDLE to send request for reading
  3. await for read data finalize
  4. Process interrupt : AND INT_SOURCE and INT_ENABLE. Different interrupts can be processed differently : some of reading registers 0x32-0x37, some as send INT_SOURCE registers for clean up interrupts
  5. Generate interrupt signal for processing system

software :

  1. await for interrupt
  2. if interrupt, read device registers
  3. make actions for processing interrupts(printing, accumulation, etc)
  4. send ack to configuration bank for deassertion irq signal from ip core
MasterPlayer commented 2 years ago

When INTR signal asserted, FSM goes to reading INT_SOURCE register in FSM notation : 1) if ADXL_INTERRUPT and irq allow is true go to TX_INT_SOURCE_PTR 2) In TX_INT_SOURCE_PTR send request for reading 0x30 register (INT_SOURCE register) : WRITE operation 0x01 (number of bytes) 0x30 (pointer to register) Go to TX_SEND_INT_SOURCE_REQ_ST 3) in TX_SEND_INT_SOURCE_REQ_ST send read request for 1 byte: 0x01 Go to RX_INT_SOURCE_AWAIT_DATA_ST 4) in RX_INT_SOURCE_AWAIT_DATA_ST : Await while new data register was updated, if data was received, refresh this register(0x30) in register device bank Go to INT_PROCESSING_ST 5) In INT_PROCESSING_ST we perform analysis (INT_SOURCE and INT_ENABLE) registers for next processing for interrupt

MasterPlayer commented 2 years ago

1) SingleTap interrupt processing perform in #22

MasterPlayer commented 2 years ago

need extend configuration register file for realize ability for answer ACK for ADXL_IRQ signal. How do this?

MasterPlayer commented 2 years ago

SingleTap : in v1.6 supported hardware

23, #22

MasterPlayer commented 2 years ago

DoubleTap : in v1.7 supported hardware

MasterPlayer commented 2 years ago

Activity : in v1.8 supported

MasterPlayer commented 2 years ago

Inactivity : in v1.9 supported

MasterPlayer commented 2 years ago

DataReady : in 1.10 supported

MasterPlayer commented 2 years ago

FreeFall support

MasterPlayer commented 2 years ago

Watermark support

MasterPlayer commented 2 years ago

OVERRUN support