tud_hid_report_complete_cb() API

update hid composite to make use of tud_hid_report_complete_cb() for
sending reports when possible.

2 files changed, 19 insertions, 6 deletions

diff --git a/src/class/hid/hid_device.c b/src/class/hid/hid_device.c
index 5b9735071..4cdcecc9e 100644
--- a/src/class/hid/hid_device.c
+++ b/src/class/hid/hid_device.c
@@ -381,14 +381,24 @@ bool hidd_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_
   uint8_t itf = 0;
   hidd_interface_t * p_hid = _hidd_itf;
 
-  for ( ; ; itf++, p_hid++)
+  // Identify which interface to use
+  for (itf = 0; itf < CFG_TUD_HID; itf++)
   {
-    if (itf >= TU_ARRAY_SIZE(_hidd_itf)) return false;
-
-    if ( ep_addr == p_hid->ep_out ) break;
+    p_hid = &_hidd_itf[itf];
+    if ( (ep_addr == p_hid->ep_out) || (ep_addr == p_hid->ep_in) ) break;
   }
+  TU_ASSERT(itf < CFG_TUD_HID);
 
-  if (ep_addr == p_hid->ep_out)
+  // Sent report successfully
+  if (ep_addr == p_hid->ep_in)
+  {
+    if (tud_hid_report_complete_cb)
+    {
+      tud_hid_report_complete_cb(itf, p_hid->epin_buf, (uint8_t) xferred_bytes);
+    }
+  }
+  // Received report
+  else if (ep_addr == p_hid->ep_out)
   {
     tud_hid_set_report_cb(
         #if CFG_TUD_HID > 1
diff --git a/src/class/hid/hid_device.h b/src/class/hid/hid_device.h
index a92dc14e0..d5de53221 100644
--- a/src/class/hid/hid_device.h
+++ b/src/class/hid/hid_device.h
@@ -123,7 +123,10 @@ TU_ATTR_WEAK bool tud_hid_set_idle_cb(uint8_t idle_rate);
 
 #endif
 
-// TU_ATTR_WEAK void tud_hid_report_complete_cb(uint8_t itf, );
+// Invoked when sent REPORT successfully to host
+// Application can use this to send the next report
+// Note: For composite reports, report[0] is report ID
+TU_ATTR_WEAK void tud_hid_report_complete_cb(uint8_t itf, uint8_t const* report, uint8_t len);
 
 
 //--------------------------------------------------------------------+