void
cdc_ecm_notify_network_connection(uint8_t value) {
#if CDC_ECM_USES_INTERRUPT_ENDPOINT
Usb_select_endpoint(INT_EP);
if(!Is_usb_endpoint_enabled()) {
//PRINTF_P(PSTR("cdc_ecm: cdc_ecm_notify_network_connection: endpoint not enabled\n"));
return;
}
if(usb_endpoint_wait_for_IN_ready()!=0) {
//PRINTF_P(PSTR("cdc_ecm: cdc_ecm_notify_network_connection: Timeout waiting for interrupt endpoint to be available\n"));
return;
}
Usb_send_control_in();
Usb_write_byte(0x51); // 10100001b
Usb_write_byte(CDC_NOTIFY_NETWORK_CONNECTION);
Usb_write_byte(value);
Usb_write_byte(0x00);
Usb_write_word(ECM_INTERFACE0_NB);
Usb_write_word(0x0000);
Usb_send_in();
PRINTF_P(PSTR("cdc_ecm: CDC_NOTIFY_NETWORK_CONNECTION %d\n"),value);
#endif
}
/**
* @brief This function transmits a ram buffer content to the USB.
* This function is mode efficient in term of USB bandwith transfer.
*
* @param U8 *buffer : the pointer to the RAM buffer to be sent
* @param data_to_send : the number of data to be sent
*/
void uart_usb_send_buffer(U8 *buffer, U8 nb_data)
{
U8 zlp;
if(!Is_device_enumerated())
return;
// Compute if zlp required
if(nb_data%TX_EP_SIZE)
zlp=FALSE;
else
zlp=TRUE;
Usb_select_endpoint(TX_EP);
while (nb_data)
{
while(Is_usb_write_enabled()==FALSE); // Wait Endpoint ready
while(Is_usb_write_enabled() && nb_data)
{
Usb_write_byte(*buffer);
buffer++;
nb_data--;
}
Usb_ack_in_ready();
}
if(zlp)
{
while(Is_usb_write_enabled()==FALSE); // Wait Endpoint ready
Usb_ack_in_ready();
}
}
//! usb_init_device.
//!
//! This function initializes the USB device controller and
//! configures the Default Control Endpoint.
//!
//!
//! @param none
//!
//! @return status
//!
U8 usb_init_device (void)
{
Usb_select_device();
if(Is_usb_id_device())
{
Usb_select_endpoint(EP_CONTROL);
if(!Is_usb_endpoint_enabled())
{
#if (USB_LOW_SPEED_DEVICE==DISABLE)
return usb_configure_endpoint(EP_CONTROL, \
TYPE_CONTROL, \
DIRECTION_OUT, \
SIZE_64, \
ONE_BANK, \
NYET_DISABLED);
#else
return usb_configure_endpoint(EP_CONTROL, \
TYPE_CONTROL, \
DIRECTION_OUT, \
SIZE_8, \
ONE_BANK, \
NYET_DISABLED);
#endif
}
}
return FALSE;
}
void
cdc_ecm_notify_connection_speed_change(uint32_t upstream,uint32_t downstream) {
#if CDC_ECM_USES_INTERRUPT_ENDPOINT
Usb_select_endpoint(INT_EP);
if(!Is_usb_endpoint_enabled())
return;
if(usb_endpoint_wait_for_IN_ready()!=0)
return;
Usb_send_control_in();
Usb_write_byte(0x51); // 10100001b
Usb_write_byte(CDC_NOTIFY_CONNECTION_SPEED_CHANGE);
Usb_write_word(0x0000);
Usb_write_word(ECM_INTERFACE0_NB);
Usb_write_word(0x0008);
Usb_send_in();
if(usb_endpoint_wait_for_write_enabled()!=0)
return;
Usb_write_long(upstream);
Usb_write_long(downstream);
Usb_send_in();
PRINTF_P(PSTR("cdc_ecm: CDC_NOTIFY_CONNECTION_SPEED_CHANGE UP:%d DOWN:%d\n"),upstream,downstream);
#endif
}
/**
* @brief This function fills the USB transmit buffer with the new data. This buffer
* is sent if complete. To flush this buffer before waiting full, launch
* the uart_usb_flush() function.
*
* @param data_to_send Data to send
*
* @return data_to_send Data that was sent
*/
int uart_usb_putchar(int data_to_send)
{
// Preserve the currently selected endpoint
uint8_t uenum = UENUM;
USB_CDC_ACM_HOOK_TX_START(data_to_send);
Usb_select_endpoint(VCP_TX_EP);
if(usb_endpoint_wait_for_write_enabled()!=0) {
data_to_send=-1;
goto bail;
}
Usb_write_byte(data_to_send);
tx_counter++;
//If Endpoint full -> flush
if(!Is_usb_write_enabled())
uart_usb_flush();
USB_CDC_ACM_HOOK_TX_END(data_to_send);
bail:
// Restore previously selected endpoint
UENUM = uenum;
return data_to_send;
}
/**
* @brief This function reads one byte from the USB bus
*
* If one byte is present in the USB fifo, this byte is returned. If no data
* is present in the USB fifo, this function waits for USB data.
*
* @return U8 byte received
*/
char uart_usb_getchar(void)
{
register Uchar data_rx;
// Preserve the currently selected endpoint
uint8_t uenum = Usb_get_selected_endpoint();
Usb_select_endpoint(VCP_RX_EP);
if (!rx_counter) while (!uart_usb_test_hit());
data_rx=Usb_read_byte();
rx_counter--;
if (!rx_counter) Usb_ack_receive_out();
#if USB_CDC_ACM_CONF_LOCAL_ECHO
//Local echo
uart_usb_putchar(data_rx);
#endif
USB_CDC_ACM_HOOK_RX(data_rx);
// Restore previously selected endpoint
UENUM = uenum;
return data_rx;
}
//! @brief This function selects (and resets) the interface alternate setting
//!
//! @param wInterface Interface selected
//! @param alternate_setting alternate setting selected
//!
void usb_user_interface_reset(U16 wInterface, U8 alternate_setting)
{
// default setting selected = reset data toggle
if( INTERFACE_NB == wInterface )
{
// Interface Mass Storage
Usb_select_endpoint(EP_MS_IN);
Usb_disable_stall_handshake();
Usb_reset_endpoint(EP_MS_IN);
Usb_reset_data_toggle();
Usb_select_endpoint(EP_MS_OUT);
Usb_disable_stall_handshake();
Usb_reset_endpoint(EP_MS_OUT);
Usb_reset_data_toggle();
}
}
//! usb_set_feature.
//!
//! This function manages the SET FEATURE request. The USB test modes are
//! supported by this function.
//!
//! @warning Code:xx bytes (function code length)
//!
void usb_set_feature(void)
{
U8 wValue;
U8 wIndex;
U8 dummy;
if (bmRequestType == INTERFACE_TYPE)
{
return;
}
else if (bmRequestType == ENDPOINT_TYPE)
{
wValue = Usb_read_byte();
dummy = Usb_read_byte(); //!< dummy read
if (wValue == FEATURE_ENDPOINT_HALT)
{
wIndex = (Usb_read_byte() & MSK_EP_DIR);
if (wIndex == EP_CONTROL)
{
return;
}
Usb_select_endpoint(wIndex);
if(Is_usb_endpoint_enabled())
{
Usb_enable_stall_handshake();
Usb_select_endpoint(EP_CONTROL);
endpoint_status[wIndex] = 0x01;
Usb_ack_receive_setup();
Usb_send_control_in();
}
else
{
Usb_select_endpoint(EP_CONTROL);
return;
}
}
else
{
return;
}
}
}
//! @brief Send data report to Host
//!
void hid_report_in(void)
{
Usb_select_endpoint(EP_HID_IN);
if(!Is_usb_write_enabled())
return; // Not ready to send report
setINreport();
}
//! Task which links mouse events with the USB HID mouse device
//!
void mouse_task(void)
{
if(Is_usb_vbus_low())
{
Setup_power_down_mode();
Sleep_instruction();
}
if(!Is_device_enumerated())
return; // Device not ready
#if (USB_LOW_SPEED_DEVICE==DISABLE)
// The SOF is used to schedule the task at the same frequency that Endpoint Interrupt frequency
// This check allow to win a CPU time
if(g_u8_cpt_sof<NB_IDLE_POLLING_SOF)
return; // Wait a delay
g_u8_cpt_sof=0;
#endif
if(!g_b_send_report)
{
// No report sending on going, then check mouse event to eventualy fill a new report
if(is_mouse_event())
{
// Enable sending of report
g_b_send_report = TRUE;
}
}
if((!g_b_send_report)&&(!g_b_send_ack_report))
return; // No report and ack to send
//** A report or ack must be send
Usb_select_endpoint(EP_MOUSE_IN);
if(!Is_usb_write_enabled())
return; // Endpoint no free
Led0_on();
if( g_b_send_report )
{
g_b_send_report = FALSE;
// Send an ack after a "clic" report only
g_b_send_ack_report = (0!=g_hid_mouse_report[0]);
}
else
{
Hid_mouse_report_reset(); // Reset report to have a ack report
g_b_send_ack_report = FALSE;
}
// Send report
Usb_write_byte(g_hid_mouse_report[0]);
Usb_write_byte(g_hid_mouse_report[1]);
Usb_write_byte(g_hid_mouse_report[2]);
Usb_write_byte(g_hid_mouse_report[3]);
Usb_ack_in_ready();
Led0_off();
}
/**
* @brief This function reads one byte from the USB bus
*
* If one byte is present in the USB fifo, this byte is returned. If no data
* is present in the USB fifo, this function waits for USB data.
*
* @return U8 byte received
*/
char uart_usb_getchar(void)
{
register Uchar data_rx;
Usb_select_endpoint(RX_EP);
if (!rx_counter) while (!uart_usb_test_hit());
data_rx=Usb_read_byte();
rx_counter--;
if (!rx_counter) Usb_ack_receive_out();
return data_rx;
}
uint8_t
ecm_send(uint8_t * senddata, uint16_t sendlen, uint8_t led) {
U8 byte_in_packet = 0;
//Send Data
Usb_select_endpoint(TX_EP);
if(usb_endpoint_wait_for_write_enabled()!=0) {
USB_ETH_HOOK_TX_ERROR("Timeout: write enabled");
return 0;
}
#ifdef USB_ETH_HOOK_TX_START
USB_ETH_HOOK_TX_START();
#endif
//Send packet
while(sendlen) {
Usb_write_byte(*senddata);
senddata++;
sendlen--;
byte_in_packet++;
//If endpoint is full, send data in
//And then wait for data to transfer
if (!Is_usb_write_enabled()) {
Usb_ack_in_ready();
if(usb_endpoint_wait_for_write_enabled()!=0) {
USB_ETH_HOOK_TX_ERROR("Timeout: write enabled");
return 0;
}
byte_in_packet=0;
}
}
//Send last data in - also handles sending a ZLP if needed
Usb_ack_in_ready();
#ifdef USB_ETH_HOOK_TX_END
USB_ETH_HOOK_TX_END();
#endif
//Wait for ready
if(usb_endpoint_wait_for_IN_ready()!=0) {
USB_ETH_HOOK_TX_ERROR("Timeout: IN ready");
return 0;
}
return 1;
}
//! usb_send_packet.
//!
//! This function moves the data pointed by tbuf to the selected endpoint fifo
//! and sends it through the USB.
//!
//!
//! @param ep_num number of the addressed endpoint
//! @param *tbuf address of the first data to send
//! @param data_length number of bytes to send
//!
//! @return address of the next U8 to send.
//!
//! Example:
//! usb_send_packet(3,&first_data,0x20); // send packet on the endpoint #3
//! while(!(Usb_tx_complete)); // wait packet ACK'ed by the Host
//! Usb_clear_tx_complete(); // acknowledge the transmit
//!
//! Note:
//! tbuf is incremented of 'data_length'.
//!
U8 usb_send_packet(U8 ep_num, U8* tbuf, U8 data_length)
{
U8 remaining_length;
remaining_length = data_length;
Usb_select_endpoint(ep_num);
while(Is_usb_write_enabled() && (0 != remaining_length))
{
Usb_write_byte(*tbuf);
remaining_length--;
tbuf++;
}
return remaining_length;
}
//! usb_send_packet.
//!
//! This function moves the data pointed by tbuf to the selected endpoint fifo
//! and sends it through the USB.
//!
//! @warning Code:xx bytes (function code length)
//!
//! @param ep_num number of the addressed endpoint
//! @param *tbuf address of the first data to send
//! @param data_length number of bytes to send
//!
//! @return address of the next uint8_t to send.
//!
//! Example:
//! usb_send_packet(3,&first_data,0x20); // send packet on the endpoint #3
//! while(!(Usb_tx_complete)); // wait packet ACK'ed by the Host
//! Usb_clear_tx_complete(); // acknowledge the transmit
//!
//! Note:
//! tbuf is incremented of 'data_length'.
//!
uint8_t usb_send_packet(uint8_t ep_num, uint8_t* tbuf, uint8_t data_length)
{
uint8_t remaining_length;
remaining_length = data_length;
Usb_select_endpoint(ep_num);
while(Is_usb_write_enabled() && (0 != remaining_length))
{
Usb_write_byte(*tbuf);
remaining_length--;
tbuf++;
}
return remaining_length;
}
uint8_t my_uart_usb_num_to_read(void){
uint8_t num=0;
if(!Is_device_enumerated())
return 0;
Usb_select_endpoint(RX_EP);
if (Is_usb_receive_out()){
num = Usb_byte_counter();
if (num == 0)
Usb_ack_receive_out();
}
return num;
}
//! usb_read_packet.
//!
//! This function moves the data stored in the selected endpoint fifo to
//! the address specified by *rbuf.
//!
//! @warning Code:xx bytes (function code length)
//!
//! @param ep_num number of the addressed endpoint
//! @param *rbuf aaddress of the first data to write with the USB data
//! @param data_length number of bytes to read
//!
//! @return address of the next uint8_t to send.
//!
//! Example:
//! while(!(Usb_rx_complete)); // wait new packet received
//! usb_read_packet(4,&first_data,usb_get_nb_byte); // read packet from ep 4
//! Usb_clear_rx(); // acknowledge the transmit
//!
//! Note:
//! rbuf is incremented of 'data_length'.
//!
uint8_t usb_read_packet(uint8_t ep_num, uint8_t* rbuf, uint8_t data_length)
{
uint8_t remaining_length;
remaining_length = data_length;
Usb_select_endpoint(ep_num);
while(Is_usb_read_enabled() && (0 != remaining_length))
{
*rbuf = Usb_read_byte();
remaining_length--;
rbuf++;
}
return remaining_length;
}
//! usb_read_packet.
//!
//! This function moves the data stored in the selected endpoint fifo to
//! the address specified by *rbuf.
//!
//!
//! @param ep_num number of the addressed endpoint
//! @param *rbuf aaddress of the first data to write with the USB data
//! @param data_length number of bytes to read
//!
//! @return address of the next U8 to send.
//!
//! Example:
//! while(!(Usb_rx_complete)); // wait new packet received
//! usb_read_packet(4,&first_data,usb_get_nb_byte); // read packet from ep 4
//! Usb_clear_rx(); // acknowledge the transmit
//!
//! Note:
//! rbuf is incremented of 'data_length'.
//!
U8 usb_read_packet(U8 ep_num, U8* rbuf, U8 data_length)
{
U8 remaining_length;
remaining_length = data_length;
Usb_select_endpoint(ep_num);
while(Is_usb_read_enabled() && (0 != remaining_length))
{
*rbuf = Usb_read_byte();
remaining_length--;
rbuf++;
}
return remaining_length;
}
/**
* @brief This function sends the data stored in the USB transmit buffer.
* This function does nothing if there is no data in the buffer.
*/
void uart_usb_flush (void)
{
if(tx_counter) {
// Preserve the currently selected endpoint
uint8_t uenum = Usb_get_selected_endpoint();
Usb_select_endpoint(VCP_TX_EP);
Usb_send_in();
tx_counter = 0;
usb_endpoint_wait_for_IN_ready();
// Restore previously selected endpoint
UENUM = uenum;
}
}
/**
* @brief This function checks if a character has been received on the USB bus.
*
* @return bit (true if a byte is ready to be read)
*/
bit uart_usb_test_hit(void)
{
if (!rx_counter)
{
// Preserve the currently selected endpoint
uint8_t uenum = Usb_get_selected_endpoint();
Usb_select_endpoint(VCP_RX_EP);
if (Is_usb_receive_out())
{
rx_counter = Usb_byte_counter();
if (!rx_counter)
Usb_ack_receive_out();
}
// Restore previously selected endpoint
UENUM = uenum;
}
return (rx_counter!=0);
}
/**
* @brief This function checks if a character has been received on the USB bus.
*
* @return bit (true if a byte is ready to be read)
*/
bit uart_usb_test_hit(void)
{
if(!Is_device_enumerated())
return FALSE;
if (!rx_counter)
{
Usb_select_endpoint(RX_EP);
if (Is_usb_receive_out())
{
rx_counter = Usb_byte_counter();
if (!rx_counter)
{
Usb_ack_receive_out();
}
}
}
return (rx_counter!=0);
}
//! usb_init_device.
//!
//! This function initializes the USB device controller and
//! configures the Default Control Endpoint.
//!
//! @returns Zero is returned if the device could not be initialized. A non-zero,
//! positive number is returned if the initialization was successful.
uint8_t usb_init_device (void)
{
Usb_select_device();
if(Is_usb_id_device())
{
Usb_select_endpoint(EP_CONTROL);
if(!Is_usb_endpoint_enabled())
{
return usb_configure_endpoint(EP_CONTROL, \
TYPE_CONTROL, \
DIRECTION_OUT, \
SIZE_64, \
ONE_BANK, \
NYET_DISABLED);
}
}
return false;
}
int USB::write(char* buf, int len)
{
if(!isEnumerated())
return 0;
Usb_select_endpoint(EP_TEMP_IN);
//if(!canSend())
// return 0;
char* ptr = buf;
for(int i = 0; i<len; i++)
Usb_write_byte(*ptr++);
for(int i; i<EP_IN_LENGTH_TEMP1; i++)
Usb_write_byte(0);
Usb_ack_in_ready();
return len;
}
int USB::read(char* buf, int len)
{
if(!isEnumerated())
return 0;
Usb_select_endpoint(EP_TEMP_OUT);
if(!hasData())
return 0;
U16 num = Usb_byte_counter();
if(len < num)
num = len;
char* ptr = buf;
for(U16 i = num; i; i--)
*ptr++ = Usb_read_byte();
Usb_ack_receive_out();
return num;
}
//! @brief Get data report from Host
//!
void hid_report_out(void)
{
Usb_select_endpoint(EP_HID_OUT);
if(Is_usb_receive_out())
{
//Message Definition
//Section
//Instruction
//Flags
//Flags
//datalength
//Retrieve message parts
unsigned char section, instruction, dataLength, flagH, flagL, i;
section = Usb_read_byte();
instruction = Usb_read_byte();
flagL = Usb_read_byte();
flagH = Usb_read_byte();
dataLength = Usb_read_byte();
for(i = 0; i < HID_OUT_DATAPACKET_LENGTH; i++) //copy datapacket to global buffer
hid_OUT_dataPkt[i] = Usb_read_byte();
//handle message
sectionCall(section, instruction, &hid_OUT_dataPkt[0], dataLength);
//ack message
Usb_ack_receive_out();
}
// //** Check if we received DFU mode command from host
// if(jump_bootloader)
// {
// U32 volatile tempo;
// Leds_off();
// Usb_detach(); // Detach actual generic HID application
// for(tempo=0;tempo<70000;tempo++); // Wait some time before
// start_boot(); // Jumping to booltoader
// }
}
uint8_t
cdc_ecm_process(void) {
static uint8_t doInit = 1;
Usb_select_endpoint(RX_EP);
if(!Is_usb_endpoint_enabled()) {
return 0;
}
if (doInit) {
#ifdef USB_ETH_HOOK_INIT
USB_ETH_HOOK_INIT();
#endif
cdc_ecm_notify_network_connection(1);
cdc_ecm_notify_connection_speed_change(250000,250000);
doInit = 0;
if(usb_ecm_packet_filter & PACKET_TYPE_PROMISCUOUS) {
#if RF230BB
rf230_set_promiscuous_mode(true);
#else
radio_set_trx_state(RX_ON);
#endif
}
// Select again, just to make sure.
Usb_select_endpoint(RX_EP);
}
if(!usb_eth_is_active) {
// If we aren't active, just eat the packets.
if(Is_usb_read_enabled()) {
Usb_ack_receive_out();
}
return 0;
}
//Connected!
Led0_on();
if(Is_usb_read_enabled()) {
uint16_t bytecounter;
uint16_t bytes_received = 0;
U8 * buffer = uip_buf;
if(!usb_eth_ready_for_next_packet()) {
// Since we aren't ready for a packet yet,
// just return.
goto bail;
}
#ifdef USB_ETH_HOOK_RX_START
USB_ETH_HOOK_RX_START();
#endif
while((bytecounter=Usb_byte_counter_8())==CDC_ECM_DATA_ENDPOINT_SIZE) {
while((bytes_received<USB_ETH_MTU) && (bytecounter--)) {
*buffer++ = Usb_read_byte();
bytes_received++;
}
bytes_received+=bytecounter+1;
//ACK previous data
Usb_ack_receive_out();
//Wait for new data
if(usb_endpoint_wait_for_read_enabled()!=0) {
USB_ETH_HOOK_RX_ERROR("Timeout: read enabled");
goto bail;
}
}
bytecounter = Usb_byte_counter_8();
while((bytes_received<USB_ETH_MTU) && (bytecounter--)) {
*buffer++ = Usb_read_byte();
bytes_received++;
}
bytes_received+=bytecounter+1;
//Ack final data packet
Usb_ack_receive_out();
//PRINTF_P(PSTR("cdc_ecm: Got packet %d bytes long\n"),bytes_received);
#ifdef USB_ETH_HOOK_RX_END
USB_ETH_HOOK_RX_END();
#endif
//Send data over RF or to local stack
if(bytes_received<=USB_ETH_MTU) {
USB_ETH_HOOK_HANDLE_INBOUND_PACKET(uip_buf,bytes_received);
} else {
USB_ETH_HOOK_RX_ERROR("Oversized packet");
}
}
bail:
return 1;
}
//! usb_process_request.
//!
//! @brief This function reads the SETUP request sent to the default control endpoint
//! and calls the appropriate function. When exiting of the usb_read_request
//! function, the device is ready to manage the next request.
//!
//! @note list of supported requests:
//! GET_DESCRIPTOR
//! GET_CONFIGURATION
//! SET_ADDRESS
//! SET_CONFIGURATION
//! CLEAR_FEATURE
//! SET_FEATURE
//! GET_STATUS
//!
void usb_process_request(void)
{
U8 bmRequest;
bmRequestType = Usb_read_byte();
bmRequest = Usb_read_byte();
switch (bmRequest)
{
case GET_DESCRIPTOR:
if (0x80 == bmRequestType) { usb_get_descriptor(); }
else goto user_read;
break;
case GET_CONFIGURATION:
if (0x80 == bmRequestType) { usb_get_configuration(); }
else goto user_read;
break;
case SET_ADDRESS:
if (0x00 == bmRequestType) { usb_set_address(); }
else goto user_read;
break;
case SET_CONFIGURATION:
if (0x00 == bmRequestType) { usb_set_configuration(); }
else goto user_read;
break;
case CLEAR_FEATURE:
if (0x02 >= bmRequestType) { usb_clear_feature(); }
else goto user_read;
break;
case SET_FEATURE:
if (0x02 >= bmRequestType) { usb_set_feature(); }
else goto user_read;
break;
case GET_STATUS:
if ((0x7F < bmRequestType) & (0x82 >= bmRequestType))
{ usb_get_status(); }
else goto user_read;
break;
case GET_INTERFACE:
if (bmRequestType == 0x81) { usb_get_interface(); }
else goto user_read;
break;
case SET_INTERFACE:
if (bmRequestType == 0x01) {usb_set_interface();}
break;
case SET_DESCRIPTOR:
case SYNCH_FRAME:
default: //!< un-supported request => call to user read request
user_read:
usb_user_read_request(bmRequestType, bmRequest);
break;
}
Usb_select_endpoint(EP_CONTROL);
// If the receive setup flag hasn't been cleared
// by this point then we can assume that we didn't
// support this request and should stall.
if(Is_usb_receive_setup())
Usb_enable_stall_handshake();
// Clear some flags.
Usb_ack_receive_setup();
Usb_ack_receive_out();
Usb_ack_in_ready();
}
//! usb_clear_feature.
//!
//! This function manages the SET FEATURE request.
//!
//! @warning Code:xx bytes (function code length)
//!
//! @param none
//!
//! @return none
//!
void usb_clear_feature(void)
{
U8 wValue;
U8 wIndex;
U8 dummy;
if (bmRequestType == ZERO_TYPE)
{
//!< keep that order (set StallRq/clear RxSetup) or a
//!< OUT request following the SETUP may be acknowledged
Usb_enable_stall_handshake();
Usb_ack_receive_setup();
return;
}
else if (bmRequestType == INTERFACE_TYPE)
{
//!< keep that order (set StallRq/clear RxSetup) or a
//!< OUT request following the SETUP may be acknowledged
Usb_enable_stall_handshake();
Usb_ack_receive_setup();
return;
}
else if (bmRequestType == ENDPOINT_TYPE)
{
wValue = Usb_read_byte();
dummy = Usb_read_byte(); //!< dummy read
if (wValue == FEATURE_ENDPOINT_HALT)
{
wIndex = (Usb_read_byte() & MSK_EP_DIR);
Usb_select_endpoint(wIndex);
if(Is_usb_endpoint_enabled())
{
if(wIndex != EP_CONTROL)
{
Usb_disable_stall_handshake();
Usb_reset_endpoint(wIndex);
Usb_reset_data_toggle();
}
Usb_select_endpoint(EP_CONTROL);
endpoint_status[wIndex] = 0x00;
Usb_ack_receive_setup();
Usb_send_control_in();
}
else
{
Usb_select_endpoint(EP_CONTROL);
Usb_enable_stall_handshake();
Usb_ack_receive_setup();
return;
}
}
else
{
Usb_enable_stall_handshake();
Usb_ack_receive_setup();
return;
}
}
}
//! usb_halt_endpoint.
//!
//! This function sends a STALL handshake for the next Host request. A STALL
//! handshake will be send for each next request untill a SETUP or a Clear Halt
//! Feature occurs for this endpoint.
//!
//! @param ep_num number of the addressed endpoint
//!
//! @return none
//!
void usb_halt_endpoint (U8 ep_num)
{
Usb_select_endpoint(ep_num);
Usb_enable_stall_handshake();
}
/**
* @brief This function checks if the USB emission buffer is ready to accept at
* at least 1 byte
*
* @retval TRUE if the firmware can write a new byte to transmit.
* @retval FALSE otherwise
*/
bit uart_usb_tx_ready(void)
{
Usb_select_endpoint(VCP_TX_EP);
return !!Is_usb_write_enabled();
}
//! @brief Entry point of the USB device mamagement
//!
//! This function is the entry point of the USB management. Each USB
//! event is checked here in order to launch the appropriate action.
//! If a Setup request occurs on the Default Control Endpoint,
//! the usb_process_request() function is call in the usb_standard_request.c file
//!
//! @param none
//!
//! @return none
void usb_device_task(void)
{
#if (USB_OTG_FEATURE == ENABLED)
// Check if a reset has been received
if(Is_usb_event(EVT_USB_RESET))
{
Usb_ack_event(EVT_USB_RESET);
Usb_reset_endpoint(0);
usb_configuration_nb=0;
otg_b_device_state = B_IDLE;
Clear_otg_features_from_host();
}
// When OTG mode enabled, B-Device is managed thanks to its state machine
switch (otg_b_device_state)
{
//------------------------------------------------------
// B_IDLE state
//
// - waits for Vbus to rise
// - initiate SRP if asked by user
//
case B_IDLE:
if (Is_usb_vbus_high())
{
// Vbus rise
usb_connected = TRUE;
remote_wakeup_feature = DISABLED;
usb_start_device();
Usb_vbus_on_action();
Usb_attach();
otg_b_device_state = B_PERIPHERAL;
Ack_user_request_srp();
Clear_otg_features_from_host();
remote_wakeup_feature = DISABLED;
End_session_with_srp();
if (Is_srp_sent_and_waiting_answer() && (sof_seen_in_session == TRUE))
{
Ack_srp_sent_and_answer();
Otg_print_new_failure_message(OTGMSG_A_RESPONDED,OTG_TEMPO_2SEC);
}
Usb_enable_sof_interrupt();
}
else
{
if (Is_user_requested_srp() && Is_usb_id_device())
{
// User has requested a SRP
Ack_user_request_srp();
if (!Is_srp_sent_and_waiting_answer())
{
Pll_start_auto(); // reinit device mode
Wait_pll_ready();
Usb_disable();
Usb_enable_uid_pin();
Usb_enable();
Usb_unfreeze_clock();
Usb_select_device();
Usb_attach();
otg_b_device_state = B_SRP_INIT;
Usb_device_initiate_srp(); // hardware waits for initial condition (SE0, Session End level)
sof_seen_in_session = FALSE;
}
}
if ((Is_srp_sent_and_waiting_answer()) && (Is_tb_srp_counter_overflow()))
{
// SRP failed because A-Device did not respond
End_session_with_srp();
Ack_srp_sent_and_answer();
Otg_print_new_failure_message(OTGMSG_SRP_A_NO_RESP,OTG_TEMPO_3SEC);
}
}
break;
//------------------------------------------------------
// B_SRP_INIT
//
// - a SRP has been initiated
// - B-Device waits it is finished to initialize variables
//
case B_SRP_INIT:
if (!Is_usb_device_initiating_srp())
{
otg_b_device_state = B_IDLE; // SRP initiated, return to Idle state (wait for Vbus to rise)
Srp_sent_and_waiting_answer();
Init_tb_srp_counter();
Start_session_with_srp();
Otg_print_new_event_message(OTGMSG_SRP_STARTED,TB_SRP_FAIL_MIN);
}
break;
//------------------------------------------------------
// B_PERIPHERAL : the main state of OTG Peripheral
//
// - all events are interrupt-handled
// - but they are saved and this function can execute alternate actions
// - also handle user requests (disconnect)
//
// ======================================================================================
case B_PERIPHERAL:
if (Is_otg_event(EVT_OTG_DEVICE_CONNECTED))
{
Otg_ack_event(EVT_OTG_DEVICE_CONNECTED); // set on a SetConfiguration descriptor reception
Otg_print_new_event_message(OTGMSG_CONNECTED_TO_A,OTG_TEMPO_4SEC);
}
if (Is_usb_event(EVT_USB_SUSPEND)) // SUSPEND state
{
// Suspend and HNP operations are handled in the interrupt functions
}
if (Is_srp_sent_and_waiting_answer() && (sof_seen_in_session == TRUE))
{
Ack_srp_sent_and_answer();
Otg_print_new_failure_message(OTGMSG_A_RESPONDED,OTG_TEMPO_2SEC);
}
if ((Is_srp_sent_and_waiting_answer()) && (Is_tb_srp_counter_overflow()))
{
// SRP failed because A-Device did not respond
End_session_with_srp();
Ack_srp_sent_and_answer();
Otg_print_new_failure_message(OTGMSG_SRP_A_NO_RESP,OTG_TEMPO_3SEC);
}
if (Is_usb_event(EVT_USB_RESUME) && !Is_usb_pending_remote_wake_up()) // RESUME signal detected
{
Usb_ack_event(EVT_USB_RESUME);
Usb_ack_event(EVT_USB_SUSPEND);
Usb_ack_remote_wake_up_start();
}
if (Is_usb_event(EVT_USB_UNPOWERED))
{
Usb_ack_event(EVT_USB_UNPOWERED);
Clear_all_user_request();
otg_b_device_state = B_IDLE;
}
if(Is_usb_event(EVT_USB_RESET))
{
Usb_ack_event(EVT_USB_RESET);
Usb_reset_endpoint(0);
usb_configuration_nb=0;
Clear_otg_features_from_host();
}
if (Is_otg_event(EVT_OTG_HNP_ERROR))
{
Otg_ack_event(EVT_OTG_HNP_ERROR);
Otg_print_new_failure_message(OTGMSG_DEVICE_NO_RESP,OTG_TEMPO_4SEC);
PORTC &= ~0x10;
}
if (Is_user_requested_disc())
{
Ack_user_request_disc();
if (Is_usb_id_device())
{
Usb_detach();
Usb_freeze_clock();
while (Is_usb_vbus_high()); // wait for Vbus to be under Va_vbus_valid
otg_b_device_state = B_IDLE;
usb_configuration_nb = 0;
usb_connected = FALSE;
Clear_all_user_request();
}
}
break;
//------------------------------------------------------
// B_HOST
//
// - state entered after an HNP success
// - handle user requests (disconnection, suspend, hnp)
// - call the "host_task()" for Host level handlers
//
// ======================================================================================
case B_HOST:
if (Is_otg_event(EVT_OTG_DEV_UNSUPPORTED))
{
Otg_ack_event(EVT_OTG_DEV_UNSUPPORTED);
Clear_all_user_request();
otg_b_device_state = B_IDLE;
device_state = DEVICE_UNATTACHED;
}
if (Is_user_requested_disc() || Is_user_requested_suspend() || Is_user_requested_hnp())
{
Ack_user_request_disc(); // suspend and hnp requests cleared in B_END_HNP_SUSPEND stage
Host_disable_sof(); // go into suspend mode
Usb_host_reject_hnp();
otg_b_device_state = B_END_HNP_SUSPEND;
Usb_ack_suspend();
Usb_enable_suspend_interrupt();
}
if (Is_usb_event(EVT_USB_UNPOWERED))
{
Usb_ack_event(EVT_USB_UNPOWERED);
Usb_freeze_clock();
otg_b_device_state = B_IDLE;
device_state = DEVICE_UNATTACHED;
}
usb_host_task(); // call the host task
break;
//------------------------------------------------------
// B_END_HNP_SUSPEND
//
// - device enters this state after being B_HOST, on a user request to stop bus activity (suspend, disconnect or hnp request)
// - macro is reset to peripheral mode
//
// ======================================================================================
case B_END_HNP_SUSPEND:
if (Is_usb_event(EVT_USB_SUSPEND))
{
Usb_ack_event(EVT_USB_SUSPEND);
Usb_device_stop_hnp();
Usb_select_device();
device_state = DEVICE_UNATTACHED;
if (Is_user_requested_hnp() || Is_user_requested_suspend())
{
otg_b_device_state = B_PERIPHERAL;
Ack_user_request_suspend();
Ack_user_request_hnp();
}
else
{
otg_b_device_state = B_IDLE;
Usb_detach();
Usb_freeze_clock();
}
}
break;
default:
otg_b_device_state = B_IDLE;
Clear_all_user_request();
device_state = DEVICE_UNATTACHED;
break;
}
#else
// Non-OTG exclusives Device operations
// VBUS state detection
if (Is_usb_vbus_high()&& (usb_connected==FALSE))
{
usb_connected = TRUE;
remote_wakeup_feature = DISABLED;
Usb_vbus_on_action();
Usb_send_event(EVT_USB_POWERED);
usb_start_device();
}
if (Is_usb_vbus_low()&& (usb_connected==TRUE))
{
usb_connected = FALSE;
usb_configuration_nb = 0;
Usb_send_event(EVT_USB_UNPOWERED);
Usb_detach();
Usb_freeze_clock();
Usb_vbus_off_action();
}
if(Is_usb_event(EVT_USB_RESET))
{
Usb_ack_event(EVT_USB_RESET);
Usb_reset_endpoint(0);
usb_configuration_nb=0;
}
#endif
// =======================================
// Common Standard Device Control Requests
// =======================================
// - device enumeration process
// - device control commands and features
Usb_select_endpoint(EP_CONTROL);
if (Is_usb_receive_setup())
{
usb_process_request();
}
}
