您好,
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请问您JP1 JP2是如何连接的?您是如何供电的?另外您的图片有些模糊,我无法看清您的设置。
JP1 OFF 5V circuitry is not used. Provides power to AFE circuitry. Can be used for power measurement.
JP2 3.3VTX Enables 3.3-V circuitry. 5-V circuitry is not used
不知您是否参考下面的文档
在4 AFE Configuration 中有相关描述
对于AFE电路的供电:To use the same voltage source as the MCU, set JP3. To use an external voltage source, remove the jumper from JP3 and apply voltage to TP1 (V+) and TP2 (GND)
4.3 5-V Enable
The AFE includes a DC/DC step-up converter to enable 5-V TX voltage. To enable the step up converter, set JP1. For 5-V operation, also set JP2 for 5-V operation