這兩個命令連WISOL官方文件裡也沒有很確認的說明
主要是因為原本Sigfox的跳頻(frequency hopping)頻寬較大
但目前實際運作的頻段較窄
所以透過GI與RC可以迫使模組使用中心頻率為920.8MHz的頻段
且不受時間的影響(原因CE規定10分鐘才能發一次訊息)
WISOL官方文件中只有這段
Frame Data: Send a SIGFOX message for RCZ4 Tx only
AT$GI? //return X,Y
SIGFOX官方文件
AT$RC to reset the device on the default SIGFOX macro channel (don't use with a duty cycle less than 20 seconds)
AT$GI? to get the information on current and next macro channel usage in FCC.
return X, Y = "sigfox_used_chan", "available_number_of_chan"
sigfox_used_chan: boolean value, indicating previous TX macro channel was in the SIGFOX default channel
available_number_of_chan: number of micro channel available for next TX request in current macro channel.
(6 micro channels per macro channel)
ex.
X, Y = 1, 3
1: current transmission is on SIGFOX default channel
3: it remains 3 micro channels in the current macro channel. (so enough to transmit as we fire 3 times a message)
joseph於 2017年5月25日星期四 UTC+8下午5時58分41秒寫道: