Other Parts Discussed in Thread: CC2640
Hi All:
Now I'm using cc2640 as bluetooth iBeacon function. I want to adjust the tx power, I'm little confused about how to adjust it. Here is the advertise_data in simpleBLEBroadcast program:
static uint8 advertData[] =
{
// Flags; this sets the device to use limited discoverable
// mode (advertises for 30 seconds at a time) instead of general
// discoverable mode (advertises indefinitely)
0x02, // length of this data
GAP_ADTYPE_FLAGS,
//GAP_ADTYPE_FLAGS_BREDR_NOT_SUPPORTED,
GAP_ADTYPE_ADV_INTERVAL,
#ifndef BEACON_FEATURE
// three-byte broadcast of the data "1 2 3"
0x04, // length of this data including the data type byte
GAP_ADTYPE_MANUFACTURER_SPECIFIC, // manufacturer specific adv data type
1,
2,
3
#else
// 25 byte beacon advertisement data
// Preamble: Company ID - 0x000D for TI, refer to www.bluetooth.org/.../company-identifiers
// Data type: Beacon (0x02)
// Data length: 0x15
// UUID: 00000000-0000-0000-0000-000000000000 (null beacon)
// Major: 1 (0x0001)
// Minor: 1 (0x0001)
// Measured Power: -59 (0xc5)
0x1A, // length of this data including the data type byte
GAP_ADTYPE_MANUFACTURER_SPECIFIC, // manufacturer specific adv data type
0x4C, // Company ID - Fixed
0x00, // Company ID - Fixed
0x02, // Data Type - Fixed
0x15, // Data Length - Fixed
0x00, // UUID - Variable based on different use cases/applications
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // UUID
0x00, // Major
0x00, // Major
0x00, // Minor
0x00, // Minor
0xC5 // Power - The 2's complement of the calibrated Tx Power
#endif // !BEACON_FEATURE
};
What abou the value 0xC5? Should I just adjust the value to modify the tx power? Or I should use the funciton HCI_EXT_SetTxPowerCmd(HCI_EXT_TX_POWER_5_DBM) to adjust the tx Power?
