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leave usb devices as we found them (fixes hang on second use) and yet more debuggers

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This commit is contained in:
Adam Laurie 2009-12-06 00:41:48 +00:00
parent b9c7bb89a7
commit 50a42a5b97
2 changed files with 28 additions and 19 deletions
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38
src/lib/drivers/pn531_usb.c
View file

@ -66,18 +66,14 @@ static void get_end_points(struct usb_device *dev, usb_spec_t* pus)
// Test if we dealing with a bulk IN endpoint
if((uiEndPoint & USB_ENDPOINT_DIR_MASK) == USB_ENDPOINT_IN)
{
#ifdef DEBUG
printf("Bulk endpoint in : 0x%02X\n", uiEndPoint);
#endif
DBG("Bulk endpoint in : 0x%02X\n", uiEndPoint);
pus->uiEndPointIn = uiEndPoint;
}
// Test if we dealing with a bulk OUT endpoint
if((uiEndPoint & USB_ENDPOINT_DIR_MASK) == USB_ENDPOINT_OUT)
{
#ifdef DEBUG
printf("Bulk endpoint in : 0x%02X\n", uiEndPoint);
#endif
DBG("Bulk endpoint in : 0x%02X\n", uiEndPoint);
pus->uiEndPointOut = uiEndPoint;
}
}
@ -103,12 +99,12 @@ nfc_device_t* pn531_usb_connect(const nfc_device_desc_t* pndd)
DBG("%s", "Looking for PN531 device");
usb_init();
if (usb_find_busses() < 0)
if (usb_find_busses() <= 0)
{
DBG("%s","No USB bus found");
return NULL;
}
if ((devs= usb_find_devices()) < 0)
if ((devs= usb_find_devices()) <= 0)
{
DBG("%s","No USB devices found");
return NULL;
@ -202,8 +198,14 @@ nfc_device_t* pn531_usb_connect(const nfc_device_desc_t* pndd)
void pn531_usb_disconnect(nfc_device_t* pnd)
{
usb_spec_t* pus = (usb_spec_t*)pnd->nds;
usb_release_interface(pus->pudh,0);
usb_close(pus->pudh);
int ret;
DBG("%s","PN531 disconnecting");
usb_reset(pus->pudh);
if((ret= usb_release_interface(pus->pudh,0)) < 0)
DBG("usb_release failed %i",ret);
if(usb_close(pus->pudh) < 0)
DBG("usb_close failed %i",ret);
free(pnd->nds);
free(pnd);
}
@ -233,6 +235,7 @@ bool pn531_usb_transceive(const nfc_device_spec_t nds, const byte_t* pbtTx, cons
// End of stream marker
abtTx[szTxLen+6] = 0;
DBG("%s","USB bulk write");
#ifdef DEBUG
printf("Tx: ");
print_hex(abtTx,szTxLen+7);
@ -241,9 +244,7 @@ bool pn531_usb_transceive(const nfc_device_spec_t nds, const byte_t* pbtTx, cons
ret = usb_bulk_write(pus->pudh, pus->uiEndPointOut, (char*)abtTx, szTxLen+7, USB_TIMEOUT);
if( ret < 0 )
{
#ifdef DEBUG
printf("usb_bulk_write failed with error %d\n", ret);
#endif
DBG("usb_bulk_write failed with error %d", ret);
return false;
}
@ -256,6 +257,7 @@ bool pn531_usb_transceive(const nfc_device_spec_t nds, const byte_t* pbtTx, cons
return false;
}
DBG("%s","USB bulk read");
#ifdef DEBUG
printf("Rx: ");
print_hex(abtRx,ret);
@ -266,9 +268,7 @@ bool pn531_usb_transceive(const nfc_device_spec_t nds, const byte_t* pbtTx, cons
ret = usb_bulk_read(pus->pudh, pus->uiEndPointIn, (char*)abtRx, BUFFER_LENGTH, USB_TIMEOUT);
if( ret < 0 )
{
#ifdef DEBUG
printf("usb_bulk_read failed with error %d\n", ret);
#endif
DBG("usb_bulk_read failed with error %d", ret);
return false;
}
@ -282,7 +282,11 @@ bool pn531_usb_transceive(const nfc_device_spec_t nds, const byte_t* pbtTx, cons
if(pbtRx == NULL || pszRxLen == NULL) return true;
// Only succeed when the result is at least 00 00 FF xx Fx Dx xx .. .. .. xx 00 (x = variable)
if(ret < 9) return false;
if(ret < 9)
{
DBG("%s","no data, returning false");
return false;
}
// Remove the preceding and appending bytes 00 00 FF xx Fx .. .. .. xx 00 (x = variable)
*pszRxLen = ret - 7 - 2;

9
src/lib/drivers/pn533_usb.c
View file

@ -190,8 +190,13 @@ nfc_device_t* pn533_usb_connect(const nfc_device_desc_t* pndd)
void pn533_usb_disconnect(nfc_device_t* pnd)
{
usb_spec_t* pus = (usb_spec_t*)pnd->nds;
usb_release_interface(pus->pudh,0);
usb_close(pus->pudh);
int ret;
usb_reset(pus->pudh);
if((ret= usb_release_interface(pus->pudh,0)) < 0)
DBG("usb_release failed %i",ret);
if((ret= usb_close(pus->pudh)) < 0)
DBG("usb_close failed %i",ret);
free(pnd->nds);
free(pnd);
}