diff options
| author | Daniel Gibson <metalcaedes@gmail.com> | 2021-01-05 13:48:43 +0100 |
|---|---|---|
| committer | Daniel Gibson <metalcaedes@gmail.com> | 2021-01-06 17:27:52 +0100 |
| commit | 8e823d276f939d79b2d323fad675fb8442a718c2 (patch) | |
| tree | 54af191c3614736bafc4ad66e9c3e4512403140e /cores/arduino/USBCore.cpp | |
| parent | 60f0d0b125e06dbf57b800192c80e5f60d681438 (diff) | |
Allow disabling CDC with -DCDC_DISABLED
Sometimes Arduino-based USB devices don't work because some hardware
(like KVM switches) gets confused by the CDC sub-devices.
This change makes it relatively easy to disable CDC at compiletime.
Disabling it of course means that the serial console won't work anymore,
so you need to use the reset button when flashing.
CDC_DISABLED is also used in ArduinoCore-samd for the same purpose.
based on
https://github.com/gdsports/usb-metamorph/tree/master/USBSerPassThruLine
See also https://github.com/NicoHood/HID/issues/225 and
https://github.com/arduino/Arduino/issues/6387 and
https://forum.arduino.cc/index.php?topic=545288.msg3717028#msg3717028
Diffstat (limited to 'cores/arduino/USBCore.cpp')
| -rw-r--r-- | cores/arduino/USBCore.cpp | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/cores/arduino/USBCore.cpp b/cores/arduino/USBCore.cpp index dc6bc38..9335238 100644 --- a/cores/arduino/USBCore.cpp +++ b/cores/arduino/USBCore.cpp @@ -69,8 +69,18 @@ const u8 STRING_MANUFACTURER[] PROGMEM = USB_MANUFACTURER; #define DEVICE_CLASS 0x02 // DEVICE DESCRIPTOR + +#ifdef CDC_ENABLED const DeviceDescriptor USB_DeviceDescriptorIAD = D_DEVICE(0xEF,0x02,0x01,64,USB_VID,USB_PID,0x100,IMANUFACTURER,IPRODUCT,ISERIAL,1); +#else // CDC_DISABLED +// The default descriptor uses USB class OxEF, subclass 0x02 with protocol 1 +// which means "Interface Association Descriptor" - that's needed for the CDC, +// but doesn't make much sense as a default for custom devices when CDC is disabled. +// (0x00 means "Use class information in the Interface Descriptors" which should be generally ok) +const DeviceDescriptor USB_DeviceDescriptorIAD = + D_DEVICE(0x00,0x00,0x00,64,USB_VID,USB_PID,0x100,IMANUFACTURER,IPRODUCT,ISERIAL,1); +#endif //================================================================== //================================================================== @@ -328,10 +338,12 @@ int USB_Send(u8 ep, const void* d, int len) u8 _initEndpoints[USB_ENDPOINTS] = { 0, // Control Endpoint - + +#ifdef CDC_ENABLED EP_TYPE_INTERRUPT_IN, // CDC_ENDPOINT_ACM EP_TYPE_BULK_OUT, // CDC_ENDPOINT_OUT EP_TYPE_BULK_IN, // CDC_ENDPOINT_IN +#endif // Following endpoints are automatically initialized to 0 }; @@ -373,10 +385,12 @@ void InitEndpoints() static bool ClassInterfaceRequest(USBSetup& setup) { +#ifdef CDC_ENABLED u8 i = setup.wIndex; if (CDC_ACM_INTERFACE == i) return CDC_Setup(setup); +#endif #ifdef PLUGGABLE_USB_ENABLED return PluggableUSB().setup(setup); @@ -466,7 +480,9 @@ static u8 SendInterfaces() { u8 interfaces = 0; +#ifdef CDC_ENABLED CDC_GetInterface(&interfaces); +#endif #ifdef PLUGGABLE_USB_ENABLED PluggableUSB().getInterface(&interfaces); |