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-rw-r--r--cores/arduino/CDC.cpp27
-rw-r--r--cores/arduino/Print.cpp7
-rw-r--r--cores/arduino/USBAPI.h20
-rw-r--r--cores/arduino/USBCore.cpp35
4 files changed, 73 insertions, 16 deletions
diff --git a/cores/arduino/CDC.cpp b/cores/arduino/CDC.cpp
index afbc65d..7168408 100644
--- a/cores/arduino/CDC.cpp
+++ b/cores/arduino/CDC.cpp
@@ -51,8 +51,8 @@ const CDCDescriptor _cdcInterface =
// CDC data interface
D_INTERFACE(CDC_DATA_INTERFACE,2,CDC_DATA_INTERFACE_CLASS,0,0),
- D_ENDPOINT(USB_ENDPOINT_OUT(CDC_ENDPOINT_OUT),USB_ENDPOINT_TYPE_BULK,0x40,0),
- D_ENDPOINT(USB_ENDPOINT_IN (CDC_ENDPOINT_IN ),USB_ENDPOINT_TYPE_BULK,0x40,0)
+ D_ENDPOINT(USB_ENDPOINT_OUT(CDC_ENDPOINT_OUT),USB_ENDPOINT_TYPE_BULK,USB_EP_SIZE,0),
+ D_ENDPOINT(USB_ENDPOINT_IN (CDC_ENDPOINT_IN ),USB_ENDPOINT_TYPE_BULK,USB_EP_SIZE,0)
};
int CDC_GetInterface(u8* interfaceNum)
@@ -99,11 +99,24 @@ bool CDC_Setup(USBSetup& setup)
// with a relatively long period so it can finish housekeeping tasks
// like servicing endpoints before the sketch ends
+#ifndef MAGIC_KEY
+#define MAGIC_KEY 0x7777
+#endif
+#ifndef MAGIC_KEY_POS
+#define MAGIC_KEY_POS 0x0800
+#endif
+
// We check DTR state to determine if host port is open (bit 0 of lineState).
if (1200 == _usbLineInfo.dwDTERate && (_usbLineInfo.lineState & 0x01) == 0)
{
- *(uint16_t *)(RAMEND-1) = *(uint16_t *)0x0800;
- *(uint16_t *)0x0800 = 0x7777;
+#if MAGIC_KEY_POS != (RAMEND-1)
+ *(uint16_t *)(RAMEND-1) = *(uint16_t *)MAGIC_KEY_POS;
+ *(uint16_t *)MAGIC_KEY_POS = MAGIC_KEY;
+#else
+ // for future boards save the key in the inproblematic RAMEND
+ // which is reserved for the main() return value (which will never return)
+ *(uint16_t *)MAGIC_KEY_POS = MAGIC_KEY;
+#endif
wdt_enable(WDTO_120MS);
}
else
@@ -115,7 +128,11 @@ bool CDC_Setup(USBSetup& setup)
wdt_disable();
wdt_reset();
- *(uint16_t *)0x0800 = *(uint16_t *)(RAMEND-1);
+#if MAGIC_KEY_POS != (RAMEND-1)
+ *(uint16_t *)MAGIC_KEY_POS = *(uint16_t *)(RAMEND-1);
+#else
+ *(uint16_t *)MAGIC_KEY_POS = 0x0000;
+#endif
}
}
return true;
diff --git a/cores/arduino/Print.cpp b/cores/arduino/Print.cpp
index 782d50b..bc97c85 100644
--- a/cores/arduino/Print.cpp
+++ b/cores/arduino/Print.cpp
@@ -17,6 +17,7 @@
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Modified 23 November 2006 by David A. Mellis
+ Modified 03 August 2015 by Chuck Todd
*/
#include <stdlib.h>
@@ -34,7 +35,8 @@ size_t Print::write(const uint8_t *buffer, size_t size)
{
size_t n = 0;
while (size--) {
- n += write(*buffer++);
+ if (write(*buffer++)) n++;
+ else break;
}
return n;
}
@@ -46,7 +48,8 @@ size_t Print::print(const __FlashStringHelper *ifsh)
while (1) {
unsigned char c = pgm_read_byte(p++);
if (c == 0) break;
- n += write(c);
+ if (write(c)) n++;
+ else break;
}
return n;
}
diff --git a/cores/arduino/USBAPI.h b/cores/arduino/USBAPI.h
index 5f4947e..4072772 100644
--- a/cores/arduino/USBAPI.h
+++ b/cores/arduino/USBAPI.h
@@ -32,6 +32,12 @@ typedef unsigned long u32;
#include "Arduino.h"
+// This definitions is usefull if you want to reduce the EP_SIZE to 16
+// at the moment only 64 and 16 as EP_SIZE for all EPs are supported except the control endpoint
+#ifndef USB_EP_SIZE
+#define USB_EP_SIZE 64
+#endif
+
#if defined(USBCON)
#include "USBDesc.h"
@@ -41,13 +47,13 @@ typedef unsigned long u32;
//================================================================================
// USB
-#define EP_TYPE_CONTROL 0x00
-#define EP_TYPE_BULK_IN 0x81
-#define EP_TYPE_BULK_OUT 0x80
-#define EP_TYPE_INTERRUPT_IN 0xC1
-#define EP_TYPE_INTERRUPT_OUT 0xC0
-#define EP_TYPE_ISOCHRONOUS_IN 0x41
-#define EP_TYPE_ISOCHRONOUS_OUT 0x40
+#define EP_TYPE_CONTROL (0x00)
+#define EP_TYPE_BULK_IN ((1<<EPTYPE1) | (1<<EPDIR))
+#define EP_TYPE_BULK_OUT (1<<EPTYPE1)
+#define EP_TYPE_INTERRUPT_IN ((1<<EPTYPE1) | (1<<EPTYPE0) | (1<<EPDIR))
+#define EP_TYPE_INTERRUPT_OUT ((1<<EPTYPE1) | (1<<EPTYPE0))
+#define EP_TYPE_ISOCHRONOUS_IN ((1<<EPTYPE0) | (1<<EPDIR))
+#define EP_TYPE_ISOCHRONOUS_OUT (1<<EPTYPE0)
class USBDevice_
{
diff --git a/cores/arduino/USBCore.cpp b/cores/arduino/USBCore.cpp
index 8237ccb..f12d326 100644
--- a/cores/arduino/USBCore.cpp
+++ b/cores/arduino/USBCore.cpp
@@ -110,7 +110,7 @@ static inline void ClearOUT(void)
UEINTX = ~(1<<RXOUTI);
}
-void Recv(volatile u8* data, u8 count)
+static inline void Recv(volatile u8* data, u8 count)
{
while (count--)
*data++ = UEDATX;
@@ -253,7 +253,7 @@ u8 USB_SendSpace(u8 ep)
LockEP lock(ep);
if (!ReadWriteAllowed())
return 0;
- return 64 - FifoByteCount();
+ return USB_EP_SIZE - FifoByteCount();
}
// Blocking Send of data to an endpoint
@@ -326,6 +326,7 @@ u8 _initEndpoints[] =
#define EP_SINGLE_64 0x32 // EP0
#define EP_DOUBLE_64 0x36 // Other endpoints
+#define EP_SINGLE_16 0x12
static
void InitEP(u8 index, u8 type, u8 size)
@@ -344,7 +345,13 @@ void InitEndpoints()
UENUM = i;
UECONX = (1<<EPEN);
UECFG0X = _initEndpoints[i];
+#if USB_EP_SIZE == 16
+ UECFG1X = EP_SINGLE_16;
+#elif USB_EP_SIZE == 64
UECFG1X = EP_DOUBLE_64;
+#else
+#error Unsupported value for USB_EP_SIZE
+#endif
}
UERST = 0x7E; // And reset them
UERST = 0;
@@ -620,13 +627,19 @@ void USB_Flush(u8 ep)
static inline void USB_ClockDisable()
{
+#if defined(OTGPADE)
USBCON = (USBCON & ~(1<<OTGPADE)) | (1<<FRZCLK); // freeze clock and disable VBUS Pad
+#else // u2 Series
+ USBCON = (1 << FRZCLK); // freeze clock
+#endif
PLLCSR &= ~(1<<PLLE); // stop PLL
}
static inline void USB_ClockEnable()
{
+#if defined(UHWCON)
UHWCON |= (1<<UVREGE); // power internal reg
+#endif
USBCON = (1<<USBE) | (1<<FRZCLK); // clock frozen, usb enabled
// ATmega32U4
@@ -639,6 +652,16 @@ static inline void USB_ClockEnable()
#error "Clock rate of F_CPU not supported"
#endif
+#elif defined(__AVR_AT90USB82__) || defined(__AVR_AT90USB162__) || defined(__AVR_ATmega32U2__) || defined(__AVR_ATmega16U2__) || defined(__AVR_ATmega8U2__)
+ // for the u2 Series the datasheet is confusing. On page 40 its called PINDIV and on page 290 its called PLLP0
+#if F_CPU == 16000000UL
+ // Need 16 MHz xtal
+ PLLCSR |= (1 << PLLP0);
+#elif F_CPU == 8000000UL
+ // Need 8 MHz xtal
+ PLLCSR &= ~(1 << PLLP0);
+#endif
+
// AT90USB646, AT90USB647, AT90USB1286, AT90USB1287
#elif defined(PLLP2)
#if F_CPU == 16000000UL
@@ -670,10 +693,18 @@ static inline void USB_ClockEnable()
// strange behaviors when the board is reset using the serial
// port touch at 1200 bps. This delay fixes this behavior.
delay(1);
+#if defined(OTGPADE)
USBCON = (USBCON & ~(1<<FRZCLK)) | (1<<OTGPADE); // start USB clock, enable VBUS Pad
+#else
+ USBCON &= ~(1 << FRZCLK); // start USB clock
+#endif
#if defined(RSTCPU)
+#if defined(LSM)
UDCON &= ~((1<<RSTCPU) | (1<<LSM) | (1<<RMWKUP) | (1<<DETACH)); // enable attach resistor, set full speed mode
+#else // u2 Series
+ UDCON &= ~((1 << RSTCPU) | (1 << RMWKUP) | (1 << DETACH)); // enable attach resistor, set full speed mode
+#endif
#else
// AT90USB64x and AT90USB128x don't have RSTCPU
UDCON &= ~((1<<LSM) | (1<<RMWKUP) | (1<<DETACH)); // enable attach resistor, set full speed mode
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-22 07:15:28 +0000