qcc514x 限制功率（4dbm）
Bluetooth TX power is limited to 4 dBm by a combination of:■ Limiting maximum power by editing the subsys1_config2.htf file and supplying the
following keys:
□ TX_POWER_CTRL_MAX_GFSK_POWER_DBM=4
□ TX_POWER_CTRL_MAX_DQPSK_POWER_DBM=4
□ TX_POWER_CTRL_MAX_8PSK_POWER_DBM=4
■ Ensuring that there is approximately 60 dB to 70 dB of attenuation between each RF port.
学习了，谢谢啦 这个好像只能某些特定值
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