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Code Issues Releases Activity

OP-958: HID plugin basic cleanup:

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- minor forgotten cleanup.
This commit is contained in:
Mathieu Rondonneau 2013-05-20 02:46:45 -07:00
parent d2244d83d1
commit 6e909f0dcf
1 changed files with 24 additions and 37 deletions
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61
ground/openpilotgcs/src/plugins/opHID/src/opHID_hidapi.cpp
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@ -68,10 +68,17 @@ opHID_hidapi::~opHID_hidapi()
}
// Function: enumerate the HID devices connected.
// Return:
// - a pointer to a list of HID devices found
// - number of HID devices found
/**
* \brief Enumerate the list of HID device with our vendor id
*
* \note Why don't we use the one from within the hidapi directly
* in caller? because later we will do more parsing herer.
* WARNING: our vendor id is harcoded here (not good idea).
*
* \param[out] devices_found Number of devices found.
* \return error.
* \retval 0 on success.
*/
int opHID_hidapi::enumerate(int *devices_found)
{
*devices_found = 0;
@ -128,13 +135,15 @@ int opHID_hidapi::open(int max, int vid, int pid, int usage_page, int usage)
OPHID_WARNING("WARNING: device seems already open.");
}
// if caller knows which one to look for open it
if (vid != -1 && pid != -1)
// This is a hack to prevent changing all the callers (for now)
if (vid == -1)
vid = 0;
if (pid == -1)
pid = 0;
// If caller knows which one to look for open it right away
if (vid != 0 && pid != 0)
{
if (pid == -1)
pid = 0;
if (vid == -1)
vid = 0;
hidapi_device.handle = hid_open(vid, pid, NULL);
if (!hidapi_device.handle)
@ -158,47 +167,25 @@ int opHID_hidapi::open(int max, int vid, int pid, int usage_page, int usage)
return 0;
}
// Look for the first one of interest
if (devices_found)
{
// devices_found = false;
// Look for the first one of interest for now
current_device_ptr = hidapi_device.list_ptr;
#if 0
// Currently assuming the last one is the right one
// This won't be necessary true later (TODO)
while (current_device_ptr)
{
//
if (current_device_ptr->vendor_id == vid)
{
devices_found = true;
break;
}
current_device_ptr = current_device_ptr->next;
}
#endif
}
if (devices_found)
{
OPHID_DEBUG("Opening device VID(%04hx).PID(%04hx)",
current_device_ptr->vendor_id,
current_device_ptr->product_id);
vid = current_device_ptr->vendor_id;
pid = current_device_ptr->product_id;
if (hidapi_device.list_ptr)
hid_free_enumeration(hidapi_device.list_ptr);
hidapi_device.handle = hid_open(vid /*current_device_ptr->vendor_id*/,
pid /*current_device_ptr->product_id*/,
hidapi_device.handle = hid_open(current_device_ptr->vendor_id,
current_device_ptr->product_id,
NULL);
if (!hidapi_device.handle)
{
OPHID_ERROR("Unable to open device.");
devices_found = false;
}
hid_free_enumeration(hidapi_device.list_ptr);
}
}