userQmkCompatibleKeyboard support consumer keys

ch55xduino/ch55x/libraries/Generic_Examples/examples/05.USB/qmkCompatibleKeyboard/src/userQmkCompatibleKeyboard/USBHIDKeyboardMouse.c

@@ -22,6 +22,7 @@ volatile __xdata uint8_t UpPoint2_Busy = 0;
 
 __xdata uint8_t HIDKey[8] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0};
 __xdata uint8_t HIDMouse[4] = {0x0, 0x0, 0x0, 0x0};
+__xdata uint16_t HIDConsumer[4] = {0x0, 0x0, 0x0, 0x0};
 
 typedef void (*pTaskFn)(void);
 
@@ -97,6 +98,13 @@ uint8_t USB_EP1_send(__data uint8_t reportID) {
       Ep1Buffer[64 + 1 + i] = ((uint8_t *)HIDMouse)[i];
     }
     UEP1_T_LEN = 1 + sizeof(HIDMouse); // data length
+  } else if (reportID == 3) {
+    Ep1Buffer[64 + 0] = 3;
+    for (__data uint8_t i = 0; i < sizeof(HIDConsumer); i++) {
+      // load data for upload
+      Ep1Buffer[64 + 1 + i] = ((uint8_t *)HIDConsumer)[i];
+    }
+    UEP1_T_LEN = 1 + sizeof(HIDConsumer);  // data length
   } else if (reportID == 8) {
     Ep1Buffer[64 + 0] = 8;
     UEP1_T_LEN = 33;
@@ -229,3 +237,56 @@ uint8_t Mouse_scroll(__data int8_t tilt) {
   HIDMouse[3] = 0;
   return 1;
 }
+
+uint8_t Consumer_press(__data uint16_t k) {
+  __data uint8_t i;
+
+  // Add k to the consumer report only if it's not already present
+  // and if there is an empty slot.
+  if (HIDConsumer[0] != k && HIDConsumer[1] != k && HIDConsumer[2] != k &&
+      HIDConsumer[3] != k) {
+
+    for (i = 0; i < 4; i++) {
+      if (HIDConsumer[i] == 0x00) {
+        HIDConsumer[i] = k;
+        break;
+      }
+    }
+    if (i == 4) {
+      // setWriteError();
+      return 0;
+    }
+      }
+  USB_EP1_send(3);
+  return 1;
+}
+
+uint8_t Consumer_release(__data uint16_t k) {
+  __data uint8_t i;
+
+  // Test the consumer report to see if k is present.  Clear it if it exists.
+  // Check all positions in case the key is present more than once (which it
+  // shouldn't be)
+  for (i = 0; i < 4; i++) {
+    if (0 != k && HIDConsumer[i] == k) {
+      HIDConsumer[i] = 0x00;
+    }
+  }
+
+  USB_EP1_send(3);
+  return 1;
+}
+
+void Consumer_releaseAll(void) {
+  for (__data uint8_t i = 0; i < 4; i++) { // load data for upload
+    HIDConsumer[i] = 0;
+  }
+  USB_EP1_send(3);
+}
+
+uint8_t Consumer_write(__data uint16_t c) {
+  __data uint8_t p = Consumer_press(c); // Keydown
+  Consumer_release(c);                  // Keyup
+  return p; // just return the result of press() since release() almost always
+  // returns 1
+}

ch55xduino/ch55x/libraries/Generic_Examples/examples/05.USB/qmkCompatibleKeyboard/src/userQmkCompatibleKeyboard/USBHIDKeyboardMouse.h

@@ -39,6 +39,12 @@ uint8_t Mouse_click(__data uint8_t k);
 uint8_t Mouse_move(__data int8_t x, __xdata int8_t y);
 uint8_t Mouse_scroll(__data int8_t tilt);
 
+uint8_t Consumer_press(__data uint16_t k);
+uint8_t Consumer_release(__data uint16_t k);
+void Consumer_releaseAll(void);
+
+uint8_t Consumer_write(__data uint16_t c);
+
 #ifdef __cplusplus
 } // extern "C"
 #endif

ch55xduino/ch55x/libraries/Generic_Examples/examples/05.USB/qmkCompatibleKeyboard/src/userQmkCompatibleKeyboard/USBconstant.c

@@ -196,8 +196,20 @@ __code uint8_t ReportDescriptor[] = {
     0x95, 0x03, //     REPORT_COUNT (3)
     0x81, 0x06, //     INPUT (Data,Var,Rel)
     0xc0,       //     END_COLLECTION
-    0xc0        // END_COLLECTION
-                // //todo: add media control
+    0xc0,       // END_COLLECTION
+    // Consumer Keys
+    0x05, 0x0c,        // USAGE_PAGE (Consumer Devices)
+    0x09, 0x01,        // USAGE (Consumer Control)
+    0xa1, 0x01,        // COLLECTION (Application)
+    0x85, 0x03,        //   REPORT_ID (3)
+    0x15, 0x00,        //   LOGICAL_MINIMUM (0)
+    0x26, 0xff, 0x03,  //   LOGICAL_MAXIMUM (1023)
+    0x19, 0x00,        //   USAGE_MINIMUM (Unassigned)
+    0x2a, 0xff, 0x03,  //   USAGE_MAXIMUM (Undefined)
+    0x95, 0x04,        //   REPORT_COUNT (4)
+    0x75, 0x10,        //   REPORT_SIZE (16)
+    0x81, 0x00,        //   INPUT (Data,Ary,Abs)
+    0xc0               // END_COLLECTION
 };
 
 __code uint8_t RawHIDReportDescriptor[] = {