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Major USB stack improvements. It now works at nearly the maximum speed for a full speed connection, and does seem stable.

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Still not enabled by default, #define USE_ROCKBOX_USB is still required to enable it.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16360 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Frank Gevaerts 2008-02-20 22:54:26 +00:00
parent 6af732d17a
commit 07427592a9
12 changed files with 987 additions and 610 deletions
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34
firmware/usbstack/usb_serial.c
View file

@ -23,6 +23,8 @@
//#define LOGF_ENABLE
#include "logf.h"
#ifdef USB_SERIAL
static unsigned char _transfer_buffer[16];
static unsigned char* transfer_buffer;
@ -34,20 +36,26 @@ void usb_serial_init(void)
}
/* called by usb_core_transfer_complete() */
void usb_serial_transfer_complete(int endpoint)
void usb_serial_transfer_complete(bool in, int status, int length)
{
switch (endpoint) {
case EP_RX:
int i;
switch (in) {
case false:
logf("serial: %s", transfer_buffer);
/* re-prime endpoint */
usb_drv_recv(EP_RX, transfer_buffer, sizeof _transfer_buffer);
/* echo back :) */
usb_drv_send(EP_TX, transfer_buffer, sizeof transfer_buffer);
/* Data received. Send it back */
for(i=0;i<length;i++) {
if(transfer_buffer[i]>0x40 && transfer_buffer[i]<0x5b)
transfer_buffer[i]+=0x20;
else if(transfer_buffer[i]>0x60 && transfer_buffer[i]<0x7b)
transfer_buffer[i]-=0x20;
}
usb_drv_send_nonblocking(EP_SERIAL, transfer_buffer, length);
break;
case EP_TX:
case true:
/* Data sent out (maybe correctly, but we don't actually care.
* Re-prime read endpoint */
usb_drv_recv(EP_SERIAL, transfer_buffer, sizeof _transfer_buffer);
break;
}
}
@ -55,14 +63,12 @@ void usb_serial_transfer_complete(int endpoint)
/* called by usb_core_control_request() */
bool usb_serial_control_request(struct usb_ctrlrequest* req)
{
/* note: interrupt context */
bool handled = false;
switch (req->bRequest) {
case USB_REQ_SET_CONFIGURATION:
logf("serial: set config");
/* prime rx endpoint */
usb_drv_recv(EP_RX, transfer_buffer, sizeof _transfer_buffer);
usb_drv_recv(EP_SERIAL, transfer_buffer, sizeof _transfer_buffer);
handled = true;
break;
@ -72,3 +78,5 @@ bool usb_serial_control_request(struct usb_ctrlrequest* req)
return handled;
}
#endif /*USB_SERIAL*/