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-rw-r--r--cores/arduino/CDC.cpp8
-rw-r--r--cores/arduino/USBCore.cpp18
-rw-r--r--cores/arduino/USBDesc.h17
3 files changed, 42 insertions, 1 deletions
diff --git a/cores/arduino/CDC.cpp b/cores/arduino/CDC.cpp
index 4ff6b9b..7d5afaa 100644
--- a/cores/arduino/CDC.cpp
+++ b/cores/arduino/CDC.cpp
@@ -22,6 +22,13 @@
#if defined(USBCON)
+#ifndef CDC_ENABLED
+
+#warning "! Disabled serial console via USB (CDC)!"
+#warning "! With this change you'll have to use the Arduino's reset button/pin to flash (upload)!"
+
+#else // CDC not disabled
+
typedef struct
{
u32 dwDTERate;
@@ -299,4 +306,5 @@ int32_t Serial_::readBreak() {
Serial_ Serial;
+#endif /* if defined(CDC_ENABLED) */
#endif /* if defined(USBCON) */
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);
diff --git a/cores/arduino/USBDesc.h b/cores/arduino/USBDesc.h
index c0dce07..b55ac20 100644
--- a/cores/arduino/USBDesc.h
+++ b/cores/arduino/USBDesc.h
@@ -26,8 +26,25 @@
#define ISERIAL_MAX_LEN 20
+// Uncomment the following line or pass -DCDC_DISABLED to the compiler
+// to disable CDC (serial console via USB).
+// That's useful if you want to create an USB device (like an USB Boot Keyboard)
+// that works even with problematic devices (like KVM switches).
+// Keep in mind that with this change you'll have to use the Arduino's
+// reset button to be able to flash it.
+//#define CDC_DISABLED
+
+#ifndef CDC_DISABLED
+#define CDC_ENABLED
+#endif
+
+#ifdef CDC_ENABLED
#define CDC_INTERFACE_COUNT 2
#define CDC_ENPOINT_COUNT 3
+#else // CDC_DISABLED
+#define CDC_INTERFACE_COUNT 0
+#define CDC_ENPOINT_COUNT 0
+#endif
#define CDC_ACM_INTERFACE 0 // CDC ACM
#define CDC_DATA_INTERFACE 1 // CDC Data