Fixing Mac OSX USB NKRO

[kiibohd-controller.git] / Output / pjrcUSB / arm / usb_desc.c

diff --git a/Output/pjrcUSB/arm/usb_desc.c b/Output/pjrcUSB/arm/usb_desc.c
index ac248232b0a96e77bc7011671edadf970a71c9e3..d32872b88775d59ebb844e581f3ec660fb734328 100644 (file)
--- a/Output/pjrcUSB/arm/usb_desc.c
+++ b/Output/pjrcUSB/arm/usb_desc.c
@@ -190,6 +190,11 @@ static uint8_t nkro_keyboard_report_desc[] = {
        // 165-175 are reserved/unused as well as 222-223 and 232-65535
        // 224-231 are used for modifiers (see above)
        //
+       // Compatibility Notes:
+       //  - Using a second endpoint for a boot mode device helps with compatibility
+       //  - DO NOT use Padding in the descriptor for bitfields
+       //    (Mac OSX silently fails... Windows/Linux work correctly)
+       //
        // Packing of bitmaps are as follows:
        //   4-49  :  6 bytes + 1 Report ID byte (0x04-0x31) ( 46 bits + 2 padding bits for 6 bytes total)
        //  51-164 : 20 bytes + 1 Report ID byte (0x33-0xA4) (114 bits + 6 padding bits for 15 bytes total)
@@ -198,7 +203,7 @@ static uint8_t nkro_keyboard_report_desc[] = {
        // 4-49 (6 bytes/46 bits)
         0x85, 0x03,          //   Report ID (3),
         0x75, 0x01,          //   Report Size (1),
-        0x95, 0xA0,          //   Report Count (160),
+        0x95, 0x2E,          //   Report Count (46),
         0x15, 0x00,          //   Logical Minimum (0),
         0x25, 0x01,          //   Logical Maximum (1),
         0x05, 0x07,          //   Usage Page (Key Codes),
@@ -206,10 +211,7 @@ static uint8_t nkro_keyboard_report_desc[] = {
         0x29, 0x31,          //   Usage Maximum (49),
         0x81, 0x02,          //   Input (Data, Variable, Absolute, Bitfield),
 
-       // Padding (2 bits)
-        0x75, 0x02,          //   Report Size (2),
-        0x95, 0x01,          //   Report Count (1),
-        0x81, 0x03,          //   Input (Constant),
+       // Should pad 2 bits according to the spec, but OSX doesn't like this -HaaTa
 
        // 51-164 (15 bytes/160 bits)
         0x85, 0x04,          //   Report ID (4),
@@ -222,10 +224,7 @@ static uint8_t nkro_keyboard_report_desc[] = {
         0x29, 0xA4,          //   Usage Maximum (164),
         0x81, 0x02,          //   Input (Data, Variable, Absolute, Bitfield),
 
-       // Padding (6 bits)
-        0x75, 0x06,          //   Report Size (6),
-        0x95, 0x01,          //   Report Count (1),
-        0x81, 0x03,          //   Input (Constant),
+       // Should pad 6 bits according to the spec, but OSX doesn't like this -HaaTa
 
        // 176-221 (6 bytes/46 bits)
         0x85, 0x05,          //   Report ID (5),
@@ -238,10 +237,8 @@ static uint8_t nkro_keyboard_report_desc[] = {
         0x29, 0xDD,          //   Usage Maximum (221),
         0x81, 0x02,          //   Input (Data, Variable, Absolute, Bitfield),
 
-       // Padding (2 bits)
-        0x75, 0x02,          //   Report Size (2),
-        0x95, 0x01,          //   Report Count (1),
-        0x81, 0x03,          //   Input (Constant),
+       // Should pad 2 bits according to the spec, but OSX doesn't like this -HaaTa
+
         0xc0,                // End Collection - Keyboard
 
        // System Control Collection
@@ -679,3 +676,4 @@ const uint8_t usb_endpoint_config_table[NUM_ENDPOINTS] =
 #endif
 };
 
+