//! cdc_set_line_coding.
//!
//! @brief This function manages reception of line coding parameters (baudrate...).
//!
void cdc_set_line_coding (void)
{
Usb_ack_receive_setup();
while (!(Is_usb_receive_out()));
LSB0(line_coding.dwDTERate) = Usb_read_byte();
LSB1(line_coding.dwDTERate) = Usb_read_byte();
LSB2(line_coding.dwDTERate) = Usb_read_byte();
LSB3(line_coding.dwDTERate) = Usb_read_byte();
line_coding.bCharFormat = Usb_read_byte();
line_coding.bParityType = Usb_read_byte();
line_coding.bDataBits = Usb_read_byte();
Usb_ack_receive_out();
Usb_send_control_in(); // send a ZLP for STATUS phase
while(!(Is_usb_read_control_enabled()));
}
//! cdc_get_line_coding.
//!
//! @brief This function manages reception of line coding parameters (baudrate...).
//!
void cdc_get_line_coding(void)
{
Usb_ack_receive_setup();
Usb_write_byte(LSB0(line_coding.dwDTERate));
Usb_write_byte(LSB1(line_coding.dwDTERate));
Usb_write_byte(LSB2(line_coding.dwDTERate));
Usb_write_byte(LSB3(line_coding.dwDTERate));
Usb_write_byte(line_coding.bCharFormat);
Usb_write_byte(line_coding.bParityType);
Usb_write_byte(line_coding.bDataBits);
Usb_send_control_in();
while(!(Is_usb_read_control_enabled()));
//Usb_clear_tx_complete();
while(!Is_usb_receive_out());
Usb_ack_receive_out();
}
//! cdc_set_control_line_state.
//!
//! @brief This function manages the SET_CONTROL_LINE_LINE_STATE CDC request.
//!
//! Note: Can manage hardware flow control here...
//!
void cdc_set_control_line_state (void)
{
Usb_ack_receive_setup();
Usb_send_control_in();
while(!(Is_usb_read_control_enabled()));
}
//! usb_get_descriptor.
//!
//! This function manages the GET DESCRIPTOR request. The device descriptor,
//! the configuration descriptor and the device qualifier are supported. All
//! other descriptors must be supported by the usb_user_get_descriptor
//! function.
//! Only 1 configuration is supported.
//!
//! @warning Code:xx bytes (function code length)
//!
//! @param none
//!
//! @return none
//!
void usb_get_descriptor(void)
{
U16 wLength ;
U8 descriptor_type ;
U8 string_type ;
U8 dummy;
U8 nb_byte;
zlp = FALSE; /* no zero length packet */
string_type = Usb_read_byte(); /* read LSB of wValue */
descriptor_type = Usb_read_byte(); /* read MSB of wValue */
switch (descriptor_type)
{
case DEVICE_DESCRIPTOR:
data_to_transfer = Usb_get_dev_desc_length(); //!< sizeof (usb_user_device_descriptor);
pbuffer = Usb_get_dev_desc_pointer();
break;
case CONFIGURATION_DESCRIPTOR:
data_to_transfer = Usb_get_conf_desc_length(); //!< sizeof (usb_user_configuration_descriptor);
pbuffer = Usb_get_conf_desc_pointer();
break;
default:
if( usb_user_get_descriptor(descriptor_type, string_type)==FALSE )
{
Usb_enable_stall_handshake();
Usb_ack_receive_setup();
return;
}
break;
}
dummy = Usb_read_byte(); //!< don't care of wIndex field
dummy = Usb_read_byte();
LSB(wLength) = Usb_read_byte(); //!< read wLength
MSB(wLength) = Usb_read_byte();
Usb_ack_receive_setup() ; //!< clear the receive setup flag
if (wLength > data_to_transfer)
{
if ((data_to_transfer % EP_CONTROL_LENGTH) == 0) { zlp = TRUE; }
else { zlp = FALSE; } //!< no need of zero length packet
}
else
{
data_to_transfer = (U8)wLength; //!< send only requested number of data
}
while((data_to_transfer != 0) && (!Is_usb_receive_out()))
{
while(!Is_usb_read_control_enabled());
nb_byte=0;
while(data_to_transfer != 0) //!< Send data until necessary
{
if(nb_byte++==EP_CONTROL_LENGTH) //!< Check endpoint 0 size
{
break;
}
#ifndef AVRGCC
Usb_write_byte(*pbuffer++);
#else // AVRGCC does not support point to PGM space
#warning with avrgcc assumes devices descriptors are stored in the lower 64Kbytes of on-chip flash memory
Usb_write_byte(pgm_read_byte_near((unsigned int)pbuffer++));
#endif
data_to_transfer --;
}
Usb_send_control_in();
}
if(Is_usb_receive_out()) { Usb_ack_receive_out(); return; } //!< abort from Host
if(zlp == TRUE)
{
while(!Is_usb_read_control_enabled());
Usb_send_control_in();
}
while(!Is_usb_receive_out());
Usb_ack_receive_out();
}
//! @brief This function manages hid get hid descriptor request.
//!
void hid_get_hid_descriptor(void)
{
U16 wLength;
U8 nb_byte;
bit zlp=FALSE;
U16 wInterface;
LSB(wInterface)=Usb_read_byte();
MSB(wInterface)=Usb_read_byte();
data_to_transfer = sizeof(usb_conf_desc.hid_mouse);
pbuffer = &(usb_conf_desc.hid_mouse.bLength);
LSB(wLength) = Usb_read_byte();
MSB(wLength) = Usb_read_byte();
Usb_ack_receive_setup();
if (wLength > data_to_transfer)
{
if ((data_to_transfer % EP_CONTROL_LENGTH) == 0) { zlp = TRUE; }
else { zlp = FALSE; } // no need of zero length packet
}
else
{
data_to_transfer = (U8)wLength; // send only requested number of data
}
while((data_to_transfer != 0) && (!Is_usb_receive_out()))
{
while(!Is_usb_read_control_enabled());
nb_byte=0;
while(data_to_transfer != 0) // Send data until necessary
{
if(nb_byte++==EP_CONTROL_LENGTH) // Check endpoint 0 size
{
break;
}
#ifndef __GNUC__
Usb_write_byte(*pbuffer++);
#else // AVRGCC does not support point to PGM space
//warning with AVRGCC assumes devices descriptors are stored in the lower 64Kbytes of on-chip flash memory
Usb_write_byte(pgm_read_byte_near((unsigned int)pbuffer++));
#endif
data_to_transfer --;
}
Usb_send_control_in();
}
if(Is_usb_receive_out())
{
// abort from Host
Usb_ack_receive_out();
return;
}
if(zlp == TRUE)
{
while(!Is_usb_read_control_enabled());
Usb_send_control_in();
}
while(!Is_usb_receive_out());
Usb_ack_receive_out();
}
//! @brief This function manages hit get repport request.
//!
void hid_get_report_descriptor(void)
{
U16 wLength;
U8 nb_byte;
bit zlp = FALSE;
U16 wInterface;
LSB(wInterface)=Usb_read_byte();
MSB(wInterface)=Usb_read_byte();
data_to_transfer = sizeof(usb_hid_report_descriptor);
pbuffer = &(usb_hid_report_descriptor.report[0]);
LSB(wLength) = Usb_read_byte();
MSB(wLength) = Usb_read_byte();
Usb_ack_receive_setup();
if (wLength > data_to_transfer)
{
if ((data_to_transfer % EP_CONTROL_LENGTH) == 0) { zlp = TRUE; }
else { zlp = FALSE; }
}
else
{
data_to_transfer = (U8)wLength; // send only requested number of data
}
while((data_to_transfer != 0) && (!Is_usb_receive_out()))
{
while(!Is_usb_read_control_enabled());
nb_byte=0;
while(data_to_transfer != 0) // Send data until necessary
{
if(nb_byte++==EP_CONTROL_LENGTH) // Check endpoint 0 size
{
break;
}
#ifndef __GNUC__
Usb_write_byte(*pbuffer++);
#else // AVRGCC does not support point to PGM space
Usb_write_byte(pgm_read_byte_near((unsigned int)pbuffer++));
#endif
data_to_transfer --;
}
Usb_send_control_in();
}
if(Is_usb_receive_out())
{
// abort from Host
Usb_ack_receive_out();
return;
}
if(zlp == TRUE)
{
while(!Is_usb_read_control_enabled());
Usb_send_control_in();
}
while(!Is_usb_receive_out());
Usb_ack_receive_out();
}
//! This function manages the GET DESCRIPTOR request. The device descriptor,
//! the configuration descriptor and the device qualifier are supported. All
//! other descriptors must be supported by the usb_user_get_descriptor
//! function.
//! Only 1 configuration is supported.
//!
Bool usb_get_descriptor(void)
{
Bool zlp;
U16 wLength;
U8 descriptor_type ;
U8 string_type;
U8 dummy;
U8 nb_byte;
U8 byte_to_send;
#if (USE_DEVICE_SN_UNIQUE==ENABLE)
U16 sn_index=0;
U8 initial_data_to_transfer;
#endif
zlp = FALSE; /* no zero length packet */
string_type = Usb_read_byte(); /* read LSB of wValue */
descriptor_type = Usb_read_byte(); /* read MSB of wValue */
switch (descriptor_type)
{
case DESCRIPTOR_DEVICE:
data_to_transfer = Usb_get_dev_desc_length(); //!< sizeof (usb_user_device_descriptor);
pbuffer = Usb_get_dev_desc_pointer();
break;
case DESCRIPTOR_CONFIGURATION:
data_to_transfer = Usb_get_conf_desc_length(); //!< sizeof (usb_user_configuration_descriptor);
pbuffer = Usb_get_conf_desc_pointer();
break;
default:
if( !usb_user_get_descriptor(descriptor_type, string_type))
return FALSE; // Unknow descriptor then stall request
break;
}
dummy = Usb_read_byte(); //!< don't care of wIndex field
dummy = Usb_read_byte();
LSB(wLength) = Usb_read_byte(); //!< read wLength
MSB(wLength) = Usb_read_byte();
Usb_ack_receive_setup() ; //!< clear the receive setup flag
if (wLength > data_to_transfer)
{
if ((data_to_transfer % EP_CONTROL_LENGTH) == 0) { zlp = TRUE; }
else { zlp = FALSE; } //!< no need of zero length packet
}
else
{
data_to_transfer = (U8)wLength; //!< send only requested number of data
}
Usb_ack_nak_out();
byte_to_send=0;
#if (USE_DEVICE_SN_UNIQUE==ENABLE)
initial_data_to_transfer = data_to_transfer;
#endif
while((data_to_transfer != 0) && (!Is_usb_nak_out_sent()))
{
while(!Is_usb_read_control_enabled())
{
if (Is_usb_nak_out_sent())
break; // don't clear the flag now, it will be cleared after
}
nb_byte=0;
while(data_to_transfer != 0) //!< Send data until necessary
{
if(nb_byte++==EP_CONTROL_LENGTH) //!< Check endpoint 0 size
break;
#if (USE_DEVICE_SN_UNIQUE==ENABLE)
if(f_get_serial_string && (data_to_transfer < (initial_data_to_transfer-1))) //if we are sending the signature characters (third byte and more...)
{ //(The first two bytes are the length and the descriptor)
switch (byte_to_send)
{
case 0:
Usb_write_byte(bin_to_ascii((Flash_read_sn(sn_index)>>4) & 0x0F)); //sends the fist part (MSB) of the signature hex number, converted in ascii
break;
case 1:
Usb_write_byte(0); //then, sends a null character (Usb_unicode)
break;
case 2:
Usb_write_byte(bin_to_ascii(Flash_read_sn(sn_index) & 0x0F)); //sends the second part (LSB) of the signature hex number, converted in ascii
break;
case 3:
Usb_write_byte(0); //then, sends a null character (Usb_unicode)
sn_index++; //increments the signature address pointer.
break;
}
byte_to_send = (byte_to_send+1)%4;
}
else
{
Usb_write_PGM_byte(pbuffer++); //Write a flash byte to USB
}
#else
Usb_write_PGM_byte(pbuffer++);
#endif
data_to_transfer --; //decrements the number of bytes to transmit.
}
if (Is_usb_nak_out_sent())
break;
else
Usb_send_control_in();
}
