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Code Issues Releases Activity

improved USB write speeds

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This commit is contained in:
Justin Rajewski 2014-03-18 14:15:41 -07:00 committed by Cristian Maglie
parent 44b5096e05
commit b822091a78
2 changed files with 7 additions and 1 deletions
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7
hardware/arduino/cores/arduino/CDC.cpp
View File

@ -199,6 +199,11 @@ void Serial_::flush(void)
} }
size_t Serial_::write(uint8_t c) size_t Serial_::write(uint8_t c)
{
return write(&c, 1);
}
size_t Serial_::write(const uint8_t *buffer, size_t size)
{ {
/* only try to send bytes if the high-level CDC connection itself /* only try to send bytes if the high-level CDC connection itself
is open (not just the pipe) - the OS should set lineState when the port is open (not just the pipe) - the OS should set lineState when the port
@ -210,7 +215,7 @@ size_t Serial_::write(uint8_t c)
// open connection isn't broken cleanly (cable is yanked out, host dies // open connection isn't broken cleanly (cable is yanked out, host dies
// or locks up, or host virtual serial port hangs) // or locks up, or host virtual serial port hangs)
if (_usbLineInfo.lineState > 0) { if (_usbLineInfo.lineState > 0) {
int r = USB_Send(CDC_TX,&c,1); int r = USB_Send(CDC_TX,buffer,size);
if (r > 0) { if (r > 0) {
return r; return r;
} else { } else {

1
hardware/arduino/cores/arduino/USBAPI.h
View File

@ -40,6 +40,7 @@ public:
virtual int read(void); virtual int read(void);
virtual void flush(void); virtual void flush(void);
virtual size_t write(uint8_t); virtual size_t write(uint8_t);
virtual size_t write(const uint8_t*, size_t);
using Print::write; // pull in write(str) and write(buf, size) from Print using Print::write; // pull in write(str) and write(buf, size) from Print
operator bool(); operator bool();
}; };