Digi-Frame A4 Multi-Purpose Spécifications télécharger pdf (Page 117)

XBee®/XBee‐PRO®SERFModules

©2009DigiInternational,Inc. 117

XBee (non-PRO) Initialization:

/* GPIO 1 and 2 are not used in the XBee (non-PRO) and should be set as outputs and driven low

reduce current draw. */

GPIO_DIRSETL = GPIO(1) | GPIO(2);// Set GPIO 1,2 as outputs

GPIO_CLRL = GPIO(1) | GPIO(2);// Set GPIO 1,2 low

XBee-PRO modules should disable the power compensation circuitry when sleeping to reduce

current draw. This is shown below.

When sleeping (end devices):

/* The power compensation shutdown line on XBee-PRO modules (GPIO 1) should be set high

when entering sleep to reduce current consumption. */

GPIO_SETL = GPIO(1);

When waking from sleep (end devices):

/* The power compensation shutdown line on XBee-PRO (GPIO 1) should be set low to enable the

power compensation circuitry and LNA. */

GPIO_CLRL = GPIO(1);

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Digi-Frame A4 Multi-Purpose Spécifications Page 117