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请问cc2530可以用指定的信道通信么？默认情况下是自动选择，我想设定下可以么？
/***********************************************************************************
* @fn halRfSetChannel
*
* @brief Set RF channel in the 2.4GHz band. The Channel must be in the range 11-26,
* 11= 2005 MHz, channel spacing 5 MHz.
* @param channel - logical channel number
* @return none
*/
void halRfSetChannel(uint8 channel)
{
FREQCTRL = (MIN_CHANNEL + (channel - MIN_CHANNEL) * CHANNEL_SPACING);
}
// IEEE 802.15.4 defined constants (2.4 GHz logical channels)
#define MIN_CHANNEL 11 // 2405 MHz
#define MAX_CHANNEL 26 // 2480 MHz
#define CHANNEL_SPACING 5 // MHz
