diff options
Diffstat (limited to 'cores/arduino/CDC.cpp')
| -rw-r--r-- | cores/arduino/CDC.cpp | 84 |
1 files changed, 76 insertions, 8 deletions
diff --git a/cores/arduino/CDC.cpp b/cores/arduino/CDC.cpp index 5d4f2a0..f19b44c 100644 --- a/cores/arduino/CDC.cpp +++ b/cores/arduino/CDC.cpp @@ -18,9 +18,9 @@ #include "USBAPI.h" #include <avr/wdt.h> +#include <util/atomic.h> #if defined(USBCON) -#ifdef CDC_ENABLED typedef struct { @@ -32,6 +32,7 @@ typedef struct } LineInfo; static volatile LineInfo _usbLineInfo = { 57600, 0x00, 0x00, 0x00, 0x00 }; +static volatile int32_t breakValue = -1; #define WEAK __attribute__ ((weak)) @@ -50,17 +51,17 @@ 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 WEAK CDC_GetInterface(u8* interfaceNum) +int CDC_GetInterface(u8* interfaceNum) { interfaceNum[0] += 2; // uses 2 return USB_SendControl(TRANSFER_PGM,&_cdcInterface,sizeof(_cdcInterface)); } -bool WEAK CDC_Setup(Setup& setup) +bool CDC_Setup(USBSetup& setup) { u8 r = setup.bRequest; u8 requestType = setup.bmRequestType; @@ -76,6 +77,11 @@ bool WEAK CDC_Setup(Setup& setup) if (REQUEST_HOSTTODEVICE_CLASS_INTERFACE == requestType) { + if (CDC_SEND_BREAK == r) + { + breakValue = ((uint16_t)setup.wValueH << 8) | setup.wValueL; + } + if (CDC_SET_LINE_CODING == r) { USB_RecvControl((void*)&_usbLineInfo,7); @@ -93,10 +99,24 @@ bool WEAK CDC_Setup(Setup& 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 *)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 @@ -108,7 +128,11 @@ bool WEAK CDC_Setup(Setup& setup) wdt_disable(); wdt_reset(); - *(uint16_t *)0x0800 = 0x0; +#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; @@ -156,6 +180,11 @@ int Serial_::read(void) return USB_Recv(CDC_RX); } +int Serial_::availableForWrite(void) +{ + return USB_SendSpace(CDC_TX); +} + void Serial_::flush(void) { USB_Flush(CDC_TX); @@ -205,7 +234,46 @@ Serial_::operator bool() { return result; } +unsigned long Serial_::baud() { + // Disable interrupts while reading a multi-byte value + uint32_t baudrate; + ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { + baudrate = _usbLineInfo.dwDTERate; + } + return baudrate; +} + +uint8_t Serial_::stopbits() { + return _usbLineInfo.bCharFormat; +} + +uint8_t Serial_::paritytype() { + return _usbLineInfo.bParityType; +} + +uint8_t Serial_::numbits() { + return _usbLineInfo.bDataBits; +} + +bool Serial_::dtr() { + return _usbLineInfo.lineState & 0x1; +} + +bool Serial_::rts() { + return _usbLineInfo.lineState & 0x2; +} + +int32_t Serial_::readBreak() { + int32_t ret; + // Disable IRQs while reading and clearing breakValue to make + // sure we don't overwrite a value just set by the ISR. + ATOMIC_BLOCK(ATOMIC_RESTORESTATE) { + ret = breakValue; + breakValue = -1; + } + return ret; +} + Serial_ Serial; -#endif #endif /* if defined(USBCON) */ |