Posted on July 30, 2012 at 15:39
Please note that I did not install any driver.. this comes up by default.
I tried linking those serial ports to the ST VCP driver with no luck.. I guess Win7 64bit is picky.
On Linux, when plugging my device I have the following:
Hello Tsuneo,
Please call me Michele 🙂 I modified a bit more the code.. 1) I duplicated the EP callbacks and I now have EP2_IN_Callback EP4_IN_Callback EP6_IN_Callback EP2_OUT_Callback EP4_OUT_Callback EP6_OUT_Callback defined like this:void
EP2_IN_Callback (
void
) {
uint16_t USB_Tx_ptr;
uint16_t USB_Tx_length;
if
(CDC1_Tx_State == 1) {
if
(VCP1_Rx_length == 0) {
CDC1_Tx_State = 0;
}
else
{
if
(VCP1_Rx_length > VIRTUAL_COM_PORT_DATA_SIZE) {
USB_Tx_ptr = VCP1_Rx_ptr_out;
USB_Tx_length = VIRTUAL_COM_PORT_DATA_SIZE;
VCP1_Rx_ptr_out += VIRTUAL_COM_PORT_DATA_SIZE;
VCP1_Rx_length -= VIRTUAL_COM_PORT_DATA_SIZE;
}
else
{
USB_Tx_ptr = VCP1_Rx_ptr_out;
USB_Tx_length = VCP1_Rx_length;
VCP1_Rx_ptr_out += VCP1_Rx_length;
VCP1_Rx_length = 0;
}
UserToPMABufferCopy(&VCP1_Rx_Buffer[USB_Tx_ptr], ENDP2_TXADDR, USB_Tx_length);
SetEPTxCount(ENDP2, USB_Tx_length);
SetEPTxValid(ENDP2);
}
}
}void
EP2_OUT_Callback(
void
) {
uint16_t USB_Rx_Cnt;
/* Get the received data buffer and update the counter */
USB_Rx_Cnt = USB_SIL_Read(EP2_OUT, USB_Rx_Buffer);
/* USB data will be immediately processed, this allow next USB traffic being
NAKed till the end of the USART Xfer */
USB_To_VCP1_Send_Data(USB_Rx_Buffer, USB_Rx_Cnt);
/* Enable the receive of data on EP2 */
SetEPRxValid(ENDP2);
}void
Handle_USBAsynchXfer (
void
) {
uint16_t USB_Tx_ptr;
uint16_t USB_Tx_length;
// -------------------- VCP1
if
(CDC1_Tx_State != 1) {
if
(VCP1_Rx_ptr_out == VCP1_Rx_DATA_SIZE) {
VCP1_Rx_ptr_out = 0;
}
if
(VCP1_Rx_ptr_out == VCP1_Rx_ptr_in) {
CDC1_Tx_State = 0;
// return;
}
else
{
if
(VCP1_Rx_ptr_out > VCP1_Rx_ptr_in) {
/* rollback */
VCP1_Rx_length = VCP1_Rx_DATA_SIZE - VCP1_Rx_ptr_out;
}
else
{
VCP1_Rx_length = VCP1_Rx_ptr_in - VCP1_Rx_ptr_out;
}
if
(VCP1_Rx_length > VIRTUAL_COM_PORT_DATA_SIZE) {
USB_Tx_ptr = VCP1_Rx_ptr_out;
USB_Tx_length = VIRTUAL_COM_PORT_DATA_SIZE;
VCP1_Rx_ptr_out += VIRTUAL_COM_PORT_DATA_SIZE;
VCP1_Rx_length -= VIRTUAL_COM_PORT_DATA_SIZE;
}
else
{
USB_Tx_ptr = VCP1_Rx_ptr_out;
USB_Tx_length = VCP1_Rx_length;
VCP1_Rx_ptr_out += VCP1_Rx_length;
VCP1_Rx_length = 0;
}
CDC1_Tx_State = 1;
UserToPMABufferCopy(&VCP1_Rx_Buffer[USB_Tx_ptr], ENDP2_TXADDR, USB_Tx_length);
SetEPTxCount(ENDP2, USB_Tx_length);
SetEPTxValid(ENDP2);
}
}
// -------------------- VCP2
if
(CDC2_Tx_State != 1) {
if
(VCP2_Rx_ptr_out == VCP2_Rx_DATA_SIZE) {
VCP2_Rx_ptr_out = 0;
}
if
(VCP2_Rx_ptr_out == VCP2_Rx_ptr_in) {
CDC2_Tx_State = 0;
// return;
}
else
{
if
(VCP2_Rx_ptr_out > VCP2_Rx_ptr_in) {
/* rollback */
VCP2_Rx_length = VCP2_Rx_DATA_SIZE - VCP2_Rx_ptr_out;
}
else
{
VCP2_Rx_length = VCP2_Rx_ptr_in - VCP2_Rx_ptr_out;
}
if
(VCP2_Rx_length > VIRTUAL_COM_PORT_DATA_SIZE) {
USB_Tx_ptr = VCP2_Rx_ptr_out;
USB_Tx_length = VIRTUAL_COM_PORT_DATA_SIZE;
VCP2_Rx_ptr_out += VIRTUAL_COM_PORT_DATA_SIZE;
VCP2_Rx_length -= VIRTUAL_COM_PORT_DATA_SIZE;
}
else
{
USB_Tx_ptr = VCP2_Rx_ptr_out;
USB_Tx_length = VCP2_Rx_length;
VCP2_Rx_ptr_out += VCP2_Rx_length;
VCP2_Rx_length = 0;
}
CDC2_Tx_State = 1;
UserToPMABufferCopy(&VCP2_Rx_Buffer[USB_Tx_ptr], ENDP4_TXADDR, USB_Tx_length);
SetEPTxCount(ENDP4, USB_Tx_length);
SetEPTxValid(ENDP4);
}
}
// -------------------- VCP3
if
(CDC3_Tx_State != 1) {
if
(VCP3_Rx_ptr_out == VCP3_Rx_DATA_SIZE) {
VCP3_Rx_ptr_out = 0;
}
if
(VCP3_Rx_ptr_out == VCP3_Rx_ptr_in) {
CDC3_Tx_State = 0;
// return;
}
else
{
if
(VCP3_Rx_ptr_out > VCP3_Rx_ptr_in) {
/* rollback */
VCP3_Rx_length = VCP3_Rx_DATA_SIZE - VCP3_Rx_ptr_out;
}
else
{
VCP3_Rx_length = VCP3_Rx_ptr_in - VCP3_Rx_ptr_out;
}
if
(VCP3_Rx_length > VIRTUAL_COM_PORT_DATA_SIZE) {
USB_Tx_ptr = VCP3_Rx_ptr_out;
USB_Tx_length = VIRTUAL_COM_PORT_DATA_SIZE;
VCP3_Rx_ptr_out += VIRTUAL_COM_PORT_DATA_SIZE;
VCP3_Rx_length -= VIRTUAL_COM_PORT_DATA_SIZE;
}
else
{
USB_Tx_ptr = VCP3_Rx_ptr_out;
USB_Tx_length = VCP3_Rx_length;
VCP3_Rx_ptr_out += VCP3_Rx_length;
VCP3_Rx_length = 0;
}
CDC3_Tx_State = 1;
UserToPMABufferCopy(&VCP3_Rx_Buffer[USB_Tx_ptr], ENDP6_TXADDR, USB_Tx_length);
SetEPTxCount(ENDP6, USB_Tx_length);
SetEPTxValid(ENDP6);
}
}
}[ 074217] usb 2-1.2: new full-speed USB device number 3 using ehci_hcd
[ 196449] cdc_acm 2-1.2:1.0: ttyACM0: USB ACM device [ 196945] cdc_acm 2-1.2:1.2: ttyACM1: USB ACM device [ 197586] cdc_acm 2-1.2:1.4: ttyACM2: USB ACM device [ 197992] usbcore: registered new interface driver cdc_acm [ 197997] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters and three virtual COM ports appear at ttyACM0, ttyACM1, ttyACM2. But nothing flows through them. Getting there? Cheers, Michele
