Add -force-ctrl option for HID backup transfer

In case the normal HID interrupt transfer fails, the HID can use
control ep to transfer data as a backup.

Signed-off-by: Xu Yang <xu.yang_2@nxp.com>

Author: Xu Yang

libuuu/libuuu.h

@@ -174,5 +174,6 @@ enum class bmap_mode {
 /*Get .bmap handling mode*/
 EXT bmap_mode uuu_get_bmap_mode();
 EXT int uuu_set_bmap_mode(bmap_mode mode);
+EXT void uuu_set_force_hid_use_ctrl_ep(bool force);
 
 #endif

libuuu/trans.cpp

@@ -43,6 +43,13 @@ extern "C"
 
 using namespace std;
 
+static bool g_force_hid_use_ctrl_ep = false;
+
+void uuu_set_force_hid_use_ctrl_ep(bool force)
+{
+	g_force_hid_use_ctrl_ep = force;
+}
+
 TransBase::~TransBase()
 {
 }
@@ -171,7 +178,7 @@ int HIDTrans::write_simple(void *buff, size_t size)
 	uint8_t *p = (uint8_t *)buff;
 	int actual_size;
 
-	if (m_outEP)
+	if (m_outEP && !g_force_hid_use_ctrl_ep)
 	{
 		ret = libusb_interrupt_transfer(
 			(libusb_device_handle *)m_devhandle,

uuu/uuu.cpp

@@ -188,6 +188,7 @@ void print_help(bool detail = false)
 		"    -dry            Dry run mode, check if script or cmd correct \n"
 		"    -bmap           Try using .bmap files even if flash commands do not specify them\n"
 		"    -no-bmap        Ignore .bmap files even if flash commands specify them\n"
+		"    -force-ctrl     Force HID transfer use control endpoint\n"
 		"    -m <usbpath>    Only monitor these paths.\n"
 		"                      -m 1:2 -m 1:3\n\n"
 		"    -ms <serial_no> Monitor the serial number prefix of the device using 'serial_no'.\n"
@@ -1041,6 +1042,10 @@ int main(int argc, char **argv)
 			{
 				uuu_set_bmap_mode(bmap_mode::Ignore);
 			}
+			else if (s == "-force-ctrl")
+			{
+				uuu_set_force_hid_use_ctrl_ep(true);
+			}
 			else if (s == "-e")
 			{
 #ifndef WIN32