64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
|
#include <stdint.h>
|
||
|
|
#include "core/usbcdc/usb.h"
|
||
|
|
#include "core/usbcdc/usbcore.h"
|
||
|
|
#include "core/usbcdc/usbhw.h"
|
||
|
|
#include "core/usbcdc/cdcuser.h"
|
||
|
|
#include "core/usbcdc/cdc_buf.h"
|
||
|
|
|
||
|
|
volatile unsigned int lastTick;
|
||
|
|
int puts(const char * str)
|
||
|
|
{
|
||
|
|
// There must be at least 1ms between USB frames (of up to 64 bytes)
|
||
|
|
// This buffers all data and writes it out from the buffer one frame
|
||
|
|
// and one millisecond at a time
|
||
|
|
if (USB_Configuration)
|
||
|
|
{
|
||
|
|
while(*str)
|
||
|
|
cdcBufferWrite(*str++);
|
||
|
|
// Check if we can flush the buffer now or if we need to wait
|
||
|
|
unsigned int currentTick = systickGetTicks();
|
||
|
|
if (currentTick != lastTick)
|
||
|
|
{
|
||
|
|
uint8_t frame[64];
|
||
|
|
uint32_t bytesRead = 0;
|
||
|
|
while (cdcBufferDataPending())
|
||
|
|
{
|
||
|
|
// Read up to 64 bytes as long as possible
|
||
|
|
bytesRead = cdcBufferReadLen(frame, 64);
|
||
|
|
USB_WriteEP (CDC_DEP_IN, frame, bytesRead);
|
||
|
|
systickDelay(1);
|
||
|
|
}
|
||
|
|
lastTick = currentTick;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void main_cdc(void)
|
||
|
|
{
|
||
|
|
//lastTick = systickGetTicks(); // Used to control output/printf timing
|
||
|
|
CDC_Init(); // Initialise VCOM
|
||
|
|
USB_Init(); // USB Initialization
|
||
|
|
USB_Connect(TRUE); // USB Connect
|
||
|
|
// Wait until USB is configured or timeout occurs
|
||
|
|
uint32_t usbTimeout = 0;
|
||
|
|
while ( usbTimeout < CFG_USBCDC_INITTIMEOUT / 10 )
|
||
|
|
{
|
||
|
|
if (USB_Configuration) break;
|
||
|
|
delayms(10); // Wait 10ms
|
||
|
|
usbTimeout++;
|
||
|
|
}
|
||
|
|
uint8_t buf[2] = {0,0};
|
||
|
|
int l;
|
||
|
|
while(1){
|
||
|
|
CDC_OutBufAvailChar(&l);
|
||
|
|
if( l ){
|
||
|
|
l = 1;
|
||
|
|
CDC_RdOutBuf (buf, &l);
|
||
|
|
puts(buf);
|
||
|
|
}
|
||
|
|
//puts("hello world\r\n");
|
||
|
|
//delayms(1);
|
||
|
|
}
|
||
|
|
}
|