horace1
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I have an application where I am using a PIC24 to switch a USB flash drive between the PIC USB input and a PC. The switching works without problems.
However, when the USB flash drive is switched thru to the PC I need to detect if it is removed, i.e. the PIC24 is not connected to USB D+ and D- signals.
I thought of looking at the power line to the flash drive to detect if power is being taken, e.g. useing a current sensor such as the LTC6101
Linear Technology - LTC6101 - High Voltage, High-Side Current Sense Amplifier in SOT-23
any ideas for a simpler solution? I don't need an accurate measure of current, all I need to detect if the flash drive is drawing power or not
However, when the USB flash drive is switched thru to the PC I need to detect if it is removed, i.e. the PIC24 is not connected to USB D+ and D- signals.
I thought of looking at the power line to the flash drive to detect if power is being taken, e.g. useing a current sensor such as the LTC6101
Linear Technology - LTC6101 - High Voltage, High-Side Current Sense Amplifier in SOT-23
any ideas for a simpler solution? I don't need an accurate measure of current, all I need to detect if the flash drive is drawing power or not
