How can I make bcm20732s sleep and wake it up by GPIO interrupt?

Anonymous · ‎Jun 26, 2014

I use bcm20732s module, I want to use its low power mode, the scenario is like this:

If 20732s is out of connection, it should go into sleep mode, not deep sleep mode. I want to register a GPIO interrupt: if rising edge, put module into sleep mode, if falling edge, wake up the module. So the question:

Can pin 39 of bcm20732s, GPIO: P13, wake up module from sleep mode by interrupt?

If module is waken, is there any callback function to tell firmware workflow that the process of wakeup is successfully?

How can I enable GPIO: P13’s interrupt function?

How can I register a GPIO interrupt routine?

Which function can make module goto sleep?

If 20732s is connected, how can I make it sleep? Does it lose connection if sleep? Or, it can maintain the connection automatically by stack?

Is there any sample code for low power application?

asridharan · ‎Jun 27, 2014

# Master control for sleep enable/disable

ENTRY "Sleep Mode Configuration"

{

# Internal name for the sleep mode. This is the only valid sleep mode for 2073x.

"Sleep mode" = "HIDD"

# Master sleep control. 1 = enable sleep; 0 = never allow sleep.

"Sleep enable" = 1

}

# Timed wake from deep sleep

ENTRY "Device LPM Configuration"

{

"Disconnect Low Power Mode" = "HID_OFF"

# Time in milliseconds to automatically wake from hid-off. 0 = don't wake.

# Will be rounded to 64mS multiples when clock source is 128KHz and 256mS

# when clock source is 32KHz external crystal.

"wakeFromHidoffInMs" = 0

# Reference clock source to use; TIMED_WAKE_CLK_SRC_128KHZ = internal 128KHz LPO

# TIMED_WAKE_CLK_SRC_32KHZ = external 32KHz LPO if available.

"wakeFromHidoffRefClk" = "TIMED_WAKE_CLK_SRC_128KHZ"

}

# Master control for deep sleep

ENTRY "BLE App Hid-off config"

{

# Only valid configuration.

"Hid-off allowed" = 0x17

}

Re: How can I make bcm20732s sleep and wake it up by GPIO interrupt?