Atmel AVR2070 Manual De Usuario

 

8240B-AVR-06/09 

For more detailed examples of association and sending sensor data, see MAC 
function calls and Sensor application function calls. 

There are a few other useful functions that the MAC offers. These functions are useful 
for making a non-networking application, such as a remote control unit. 

•  macIsChild() reports on whether a given node is a child of this node. 
•  macSetOperatingChannel() can be used to manually set the radio channel. 
•  radioGetPartnum() will query the Atmel transceiver and return the part 

number. 

•  radioGetSavedRssiValue() returns the last measured received signal 

strength indication (RSSI) value for a received packet. 

•  radioGetSavedLqiValue() returns the last measured link quality indication 

(LQI) value for a received packet. 

•  radioGetOperatingChannel() 
•  radioGetTxPowerLevel() and radioSetTxPowerLevel() set and read the 

output RF power levels 

•  radioBatmonGetVoltageThreshold(), radioBatmonGetVoltageRange(), 

radioBatmonConfigure(), and radioBatmonGetStatus() are used to work 
with the RF2xx on-board battery monitor function. 

•  radioGetClockSpeed() and radioSetClockSpeed() allow the use of the 

RF2xx CLKM signal, which can be used to clock the CPU or provide an 
accurate timebase to calibrate any other oscillator. 

•  radioEnterSleepMode() puts the transceiver to sleep and 

radioLeaveSleepMode() wakes up the transceiver. 

•  radioSendData() sends a "raw" packet over the radio. This is a lower-level 

function that RUM uses to send data to another node. 

•  radioRandom() returns up to 8 bits of random data, created from the random 

radio noise on the RF2xx radio. The RF230 does not have a random number 
generator, so the radioRandom function only returns a random number from 
the rand() system function. 

•  nodeSleep() Puts the entire node to sleep for a specified time. 

Other MAC parameters reside in the macConfig structure. While this structure is not 
meant to be used by the application directly, several useful parameters are available 
for reference: 

•  longAddr - The long (MAC) address of this node 
•  associated - True if this node has been associated to a network 
•  panId - The PAN ID of this node 
•  shortAddress - the short address of this node 
•  parentShortAddress - the short address of this node's parent 
•  currentChannel - the current radio channel selected 

The timer module can be used by an application to execute functions after a non-
blocking delay. 

The Serial Port module provides a serial port for the AVR targets.