Update hook to skip blinking on WebUSB HID serial traffic.

source/board/artemis_dk.c

@@ -52,15 +52,6 @@ static void prerun_board_config(void)
     set_board_id(board_version);
 }
 
-// USB HID override function return 1 if the activity is trivial or response is null
-uint8_t usbd_hid_no_activity(uint8_t *buf)
-{
-    if (buf[0] == ID_DAP_Vendor3 && buf[1] == 0)
-        return 1;
-    else
-        return 0;
-}
-
 const board_info_t g_board_info = {
     .info_version = 0x1,
     .family_id = kAmbiq_ama3b1kk_FamilyID,

source/board/microbit.c

@@ -69,15 +69,6 @@ static void prerun_board_config(void) {
     set_board_id(board_version);
 }
 
-// USB HID override function return 1 if the activity is trivial or response is null
-uint8_t usbd_hid_no_activity(uint8_t *buf)
-{
-    if(buf[0] == ID_DAP_Vendor3 &&  buf[1] == 0)
-        return 1;
-    else
-        return 0;
-}
-
 extern target_cfg_t target_device_nrf51822_16;
 
 const board_info_t g_board_info = {

source/board/microbitv2/microbitv2.c

@@ -457,15 +457,6 @@ uint8_t board_detect_incompatible_image(const uint8_t *data, uint32_t size)
     return result == 0;
 }
 
-// USB HID override function return 1 if the activity is trivial or response is null
-uint8_t usbd_hid_no_activity(uint8_t *buf)
-{
-    if(buf[0] == ID_DAP_Vendor3 &&  buf[1] == 0)
-        return 1;
-    else
-        return 0;
-}
-
 // This function is called before the rest of target_set_state code, so it will
 // reset the micro:bit specific features state before the target state is executed
 static uint8_t target_set_state_microbit(target_state_t state)

source/daplink/cmsis-dap/DAP_queue.c

@@ -21,6 +21,9 @@
 
 #include <string.h>
 #include "DAP_queue.h"
+#include "daplink_vendor_commands.h"
+#include "main_interface.h"
+
 void DAP_queue_init(DAP_queue * queue)
 {
     queue->recv_idx = 0;
@@ -48,6 +51,20 @@ BOOL DAP_queue_get_send_buf(DAP_queue * queue, uint8_t ** buf, int * len)
     return (__FALSE);
 }
 
+/*
+ *  Overridable function to determine if the DAP activity should trigger or
+ *  not the HID LED to flash.
+ *    Parameters:      buf: buffer with DAP request
+ *    Return Value:    1 if DAP activity should blink the HID LED, 0 otherwise
+ */
+__WEAK uint8_t DAP_activity_blink(const uint8_t *buf)
+{
+    // Skip UART and MSD DAPLink Vendor DAP commands as they already produce LED blinks
+    return (buf[0] == ID_DAP_UART_Read  ||
+            buf[0] == ID_DAP_UART_Write ||
+            buf[0] == ID_DAP_MSD_Write) ? 0 : 1;
+}
+
 /*
  *  Execute a request and store result to the DAP_queue
  *    Parameters:      queue - DAP queue, reqbuf = buffer with DAP request, len = of the request buffer, retbuf = buffer to peek on the result of the DAP operation
@@ -59,6 +76,10 @@ BOOL DAP_queue_execute_buf(DAP_queue * queue, const uint8_t *reqbuf, int len, ui
 {
     uint32_t rsize;
     if (queue->free_count > 0) {
+        if (DAP_activity_blink(reqbuf)) {
+            main_blink_hid_led(MAIN_LED_FLASH);
+        }
+
         if (len > DAP_PACKET_SIZE) {
             len = DAP_PACKET_SIZE;
         }

source/usb/bulk/usbd_bulk.c

@@ -78,7 +78,6 @@ void USBD_BULK_EP_BULKOUT_Event(U32 event)
     if ((DataInReceLen >= USBD_Bulk_BulkBufSize) ||
             (bytes_rece    <  usbd_bulk_maxpacketsize[USBD_HighSpeed])) {
         if (DAP_queue_execute_buf(&DAP_Cmd_queue, USBD_Bulk_BulkOutBuf, DataInReceLen, &rbuf)) {
-            main_blink_hid_led(MAIN_LED_FLASH);
             //Trigger the BULKIn for the reply
             if (USB_ResponseIdle) {
                 USBD_BULK_EP_BULKIN_Event(0);

source/usb/hid/usbd_user_hid.c

@@ -28,8 +28,6 @@
 #include "DAP.h"
 #include "util.h"
 #include "DAP_queue.h"
-#include "daplink.h"
-#include DAPLINK_MAIN_HEADER
 
 
 #if (USBD_HID_OUTREPORT_MAX_SZ > DAP_PACKET_SIZE)
@@ -97,18 +95,10 @@ int usbd_hid_get_report(U8 rtype, U8 rid, U8 *buf, U8 req)
     return (0);
 }
 
-// USB HID override function return 1 if the activity is trivial or response is null
-__attribute__((weak))
-uint8_t usbd_hid_no_activity(U8 *buf)
-{
-    return 0;
-}
-
 // USB HID Callback: when data is received from the host
 void usbd_hid_set_report(U8 rtype, U8 rid, U8 *buf, int len, U8 req)
 {
     uint8_t * rbuf;
-    main_led_state_t led_next_state = MAIN_LED_FLASH;
     switch (rtype) {
         case HID_REPORT_OUTPUT:
             if (len == 0) {
@@ -122,20 +112,13 @@ void usbd_hid_set_report(U8 rtype, U8 rid, U8 *buf, int len, U8 req)
 
             // execute and store to DAP_queue
             if (DAP_queue_execute_buf(&DAP_Cmd_queue, buf, len, &rbuf)) {
-                if(usbd_hid_no_activity(rbuf) == 1){
-                    //revert HID LED to default if the response is null
-                    led_next_state = MAIN_LED_DEF;
-                }
                 if (USB_ResponseIdle) {
                     hid_send_packet();
                     USB_ResponseIdle = 0;
                 }
             } else {
                 util_assert(0);
             }
-
-            main_blink_hid_led(led_next_state);
-
             break;
 
         case HID_REPORT_FEATURE: