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Hi
目前我們在使用adc 功能 只能讀到4095 請問除了 下圖這部分 還有其他地方需要作設定嗎?
電壓值超過1.8v會全部判讀為4095嗎?
Thanks
Daniel
dts 增加 &tscadc { status = "okay"; adc { ti,adc-channels = <0 1 2>; }; }; 並開啟 Linux Kernel IIO driver ADC 還是只能讀到 4095
~ # iio_generic_buffer -N 0 -g -a iio device number being used is 0 trigger-less mode selected Enabling all channels Enabling: in_voltage1_en Enabling: in_voltage0_en Enabling: in_voltage2_en 4095.000000 4095.000000 4095.000000 4095.000000 4095.000000 4095.000000 ... 4095.000000 4095.000000 4095.000000 Disabling: in_voltage1_en Disabling: in_voltage0_en Disabling: in_voltage2_en ~ # (參考資料 http://software-dl.ti.com/processor-sdk-linux/esd/docs/latest/linux/Foundational_Components/Kernel/Kernel_Drivers/ADC.html)
HW 提供了空接與分壓兩種版本，情形相同。 請問除了 < 1.8V Vref 外，還有什麼應注意事項?
