13.1.2 Frame Receive
The following figure shows the steps and states involved in sending a message from the WINC device to the host.
| Step | Description |
|---|---|
| Step (1) Wake up the WINC device | Wake up the device to be able to receive host requests. |
| Step (2) Check for Interrupt |
Monitor BIT [0] of WIFI_HOST_RCV_CTRL_0 register. Disable the host from receiving interrupts (until this interrupt is processed). |
| Step (3) Clear interrupt | Write zero to BIT [0] of WIFI_HOST_RCV_CTRL_0 register. |
| Step (4) Read data |
Get the address of the data block from WIFI_HOST_RCV_CTRL_1 register. Read data block with size obtained from WIFI_HOST_RCV_CTRL_0 register BIT [13] <-> BIT [2]. |
| Step (5) Process Request | Parse the HIF header at the start of the data and forward the data to the appropriate registered Callback function. |
| Step (6) HOST RX Done |
Raise an interrupt for the chip to free the memory holding the data by setting BIT [1] of WIFI_HOST_RCV_CTRL_0 register. Enable host interrupt reception again. |
| Step (7) Allow the WINC device to Sleep | Allow the WINC device to enter Sleep mode again (if it wishes). |