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CC2640 connection event interval is 50ms, how is this changed?

Craig Easdale19
Expert 1425 points
Other Parts Discussed in Thread: CC2640, CC2650

When examining the power consumption of the CC2640 on a scope, which connected to a device, I noticed it had a rather short interval between maintaining the connection.

How do I go about lengthening this interval to say, 300ms?

  • 0
    TI__Guru 56215 points
    What's the master device you are using? Assume you use CC2650 as peripheral device
  • 0 in reply to Christin Lee
    Expert 1425 points
    I'm using a Samsung Galaxy S4 as the master device device.
  • 0 in reply to Craig Easdale19
    TI__Guru 56215 points

    The connection interval(parameters) is controlled by the master device(Samsung Galaxy S4 in your case).  By default if you use simple_peripheral, the slave will accept connection interval within the following 2 parameters defiines.

    // Minimum connection interval (units of 1.25ms, 80=100ms) if automatic
// parameter update request is enabled
#define DEFAULT_DESIRED_MIN_CONN_INTERVAL     80

// Maximum connection interval (units of 1.25ms, 800=1000ms) if automatic
// parameter update request is enabled
#define DEFAULT_DESIRED_MAX_CONN_INTERVAL     800

    You will have to checkout android forum to see how you can send desired connection parameter from your device. Slave device does not have control to this.