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Add callback functionality for thumb drive disconnects #27

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Merged
merged 2 commits into from
Sep 27, 2023
Merged

Add callback functionality for thumb drive disconnects #27

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d8b4ea1
Add callback functionality for thumb drive disconnects
Sep 20, 2023
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Sep 20, 2023
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6 changes: 6 additions & 0 deletions src/USBHost/USBHost.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@ USBHost * USBHost::instHost = NULL;
#define MIN(a, b) ((a > b) ? b : a)

extern void (*mount_fnc)(void);
extern void (*unmount_fnc)(void);

/**
* How interrupts are processed:
Expand Down Expand Up @@ -256,6 +257,11 @@ void USBHost::usb_process()

} while(0);

// Call the device disconnected callback if registered
if (nullptr != unmount_fnc) {
unmount_fnc();
}

break;

// a td has been processed
Expand Down
6 changes: 6 additions & 0 deletions src/USBHostMSD/USBHostMSD.cpp
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Expand Up @@ -29,6 +29,7 @@
#define BO_MASS_STORAGE_RESET (0xFF)

void (*mount_fnc)(void) = nullptr;
void (*unmount_fnc)(void) = nullptr;

USBHostMSD::USBHostMSD()
{
Expand Down Expand Up @@ -442,4 +443,9 @@ bool USBHostMSD::attach_detected_callback(void (*cbk)()) {
return true;
}

bool USBHostMSD::attach_removed_callback(void (*cbk)()) {
unmount_fnc = cbk;
return true;
}

#endif
2 changes: 1 addition & 1 deletion src/USBHostMSD/USBHostMSD.h
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Expand Up @@ -65,7 +65,7 @@ class USBHostMSD : public IUSBEnumerator, public mbed::BlockDevice
virtual mbed::bd_size_t size() const;
virtual const char *get_type() const;
bool attach_detected_callback(void (*cbk)());

bool attach_removed_callback(void (*cbk)());

protected:
//From IUSBEnumerator
Expand Down