#include "config.h"
#include "conf_usb.h"
#include "lib_mcu/usb/usb_drv.h"
#include "lib_mcu/pll/pll_drv.h"
#include "usb_descriptors.h"
#include "modules/usb/device_chap9/usb_standard_request.h"
#include "usb_specific_request.h"
#include "lib_mcu/flash/flash_drv.h"
Go to the source code of this file.
Defines | |
#define | Usb_write_PGM_byte(byte) (Usb_write_byte(*byte)) |
Functions | |
static U8 | bin_to_ascii (U8 b) |
This function is used to convert a 4 bit number into an ascii character 5 => '5' 10 => 'A'. | |
static Bool | usb_get_descriptor (void) |
This function manages the GET DESCRIPTOR request. | |
static void | usb_set_address (void) |
This function manages the SET ADDRESS request. | |
static Bool | usb_set_configuration (void) |
This function manages the SET CONFIGURATION request. | |
static void | usb_get_configuration (void) |
This function manages the GET CONFIGURATION request. | |
static Bool | usb_get_status (U8 bmRequestType) |
This function manages the GET STATUS request. | |
static Bool | usb_set_feature (U8 bmRequestType) |
This function manages the SET FEATURE request. | |
static Bool | usb_clear_feature (U8 bmRequestType) |
This function manages the SET FEATURE request. | |
static Bool | usb_get_interface (void) |
This function manages the SETUP_GET_INTERFACE request. | |
static Bool | usb_set_interface (void) |
This function manages the SETUP_SET_INTERFACE request. | |
void | usb_process_request (void) |
void | usb_generate_remote_wakeup (void) |
This function manages the remote wake up generation. | |
Variables | |
U8 | f_get_serial_string = FALSE |
U8 code * | pbuffer |
U8 | endpoint_status [MAX_EP_NB] |
U8 | data_to_transfer |
U8 | usb_configuration_nb |
Public : (U8) usb_configuration_nb Store the number of the USB configuration used by the USB device when its value is different from zero, it means the device mode is enumerated Used with USB_DEVICE_FEATURE == ENABLED only /. | |
U8 | remote_wakeup_feature = DISABLE |
Public : (U8) remote_wakeup_feature Store a host request for remote wake up (set feature received) /. | |
U8 | device_status = DEVICE_STATUS |
This file contains the USB endpoint 0 management routines corresponding to the standard enumeration process (refer to chapter 9 of the USB specification. This file calls routines of the usb_specific_request.c file for non-standard request management. The enumeration parameters (descriptor tables) are contained in the usb_descriptors.c file.
Definition in file usb_standard_request.c.
#define Usb_write_PGM_byte | ( | byte | ) | (Usb_write_byte(*byte)) |
This function is used to convert a 4 bit number into an ascii character 5 => '5' 10 => 'A'.
binary | value to convert |
Definition at line 636 of file usb_standard_request.c.
Referenced by usb_get_descriptor().
Bool usb_get_descriptor | ( | void | ) | [static] |
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.
< sizeof (usb_user_device_descriptor);
< sizeof (usb_user_configuration_descriptor);
< don't care of wIndex field
< read wLength
< clear the receive setup flag
< send only requested number of data
< Send data until necessary
< Check endpoint 0 size
Definition at line 243 of file usb_standard_request.c.
References bin_to_ascii(), data_to_transfer, DESCRIPTOR_CONFIGURATION, DESCRIPTOR_DEVICE, EP_CONTROL_LENGTH, f_get_serial_string, FALSE, Is_usb_nak_out_sent, Is_usb_read_control_enabled, LSB, MSB, pbuffer, TRUE, Usb_ack_control_out, Usb_ack_nak_out, Usb_ack_receive_setup, Usb_get_conf_desc_length, Usb_get_conf_desc_pointer, Usb_get_dev_desc_length, Usb_get_dev_desc_pointer, Usb_read_byte, Usb_send_control_in, usb_user_get_descriptor(), Usb_write_byte, and Usb_write_PGM_byte.
Referenced by usb_process_request().
00244 { 00245 Bool zlp; 00246 U16 wLength; 00247 U8 descriptor_type ; 00248 U8 string_type; 00249 U8 dummy; 00250 U8 nb_byte; 00251 U8 byte_to_send; 00252 #if (USE_DEVICE_SN_UNIQUE==ENABLE) 00253 U16 sn_index=0; 00254 U8 initial_data_to_transfer; 00255 #endif 00256 00257 zlp = FALSE; /* no zero length packet */ 00258 string_type = Usb_read_byte(); /* read LSB of wValue */ 00259 descriptor_type = Usb_read_byte(); /* read MSB of wValue */ 00260 00261 switch (descriptor_type) 00262 { 00263 case DESCRIPTOR_DEVICE: 00264 data_to_transfer = Usb_get_dev_desc_length(); 00265 pbuffer = Usb_get_dev_desc_pointer(); 00266 break; 00267 00268 case DESCRIPTOR_CONFIGURATION: 00269 data_to_transfer = Usb_get_conf_desc_length(); 00270 pbuffer = Usb_get_conf_desc_pointer(); 00271 break; 00272 00273 default: 00274 if( !usb_user_get_descriptor(descriptor_type, string_type)) 00275 return FALSE; // Unknow descriptor then stall request 00276 break; 00277 } 00278 00279 dummy = Usb_read_byte(); 00280 dummy = Usb_read_byte(); 00281 LSB(wLength) = Usb_read_byte(); 00282 MSB(wLength) = Usb_read_byte(); 00283 Usb_ack_receive_setup() ; 00284 00285 if (wLength > data_to_transfer) 00286 { 00287 if ((data_to_transfer % EP_CONTROL_LENGTH) == 0) { zlp = TRUE; } 00288 else { zlp = FALSE; } 00289 } 00290 else 00291 { 00292 data_to_transfer = (U8)wLength; 00293 } 00294 00295 Usb_ack_nak_out(); 00296 00297 byte_to_send=0; 00298 #if (USE_DEVICE_SN_UNIQUE==ENABLE) 00299 initial_data_to_transfer = data_to_transfer; 00300 #endif 00301 while((data_to_transfer != 0) && (!Is_usb_nak_out_sent())) 00302 { 00303 while(!Is_usb_read_control_enabled()) 00304 { 00305 if (Is_usb_nak_out_sent()) 00306 break; // don't clear the flag now, it will be cleared after 00307 } 00308 00309 nb_byte=0; 00310 while(data_to_transfer != 0) 00311 { 00312 if(nb_byte++==EP_CONTROL_LENGTH) 00313 break; 00314 00315 #if (USE_DEVICE_SN_UNIQUE==ENABLE) 00316 00317 if(f_get_serial_string && (data_to_transfer < (initial_data_to_transfer-1))) //if we are sending the signature characters (third byte and more...) 00318 { //(The first two bytes are the length and the descriptor) 00319 00320 switch (byte_to_send) 00321 { 00322 case 0: 00323 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 00324 break; 00325 00326 case 1: 00327 Usb_write_byte(0); //then, sends a null character (Usb_unicode) 00328 break; 00329 00330 case 2: 00331 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 00332 break; 00333 00334 case 3: 00335 Usb_write_byte(0); //then, sends a null character (Usb_unicode) 00336 sn_index++; //increments the signature address pointer. 00337 break; 00338 } 00339 byte_to_send = (byte_to_send+1)%4; 00340 } 00341 else 00342 { 00343 Usb_write_PGM_byte(pbuffer++); //Write a flash byte to USB 00344 } 00345 #else 00346 Usb_write_PGM_byte(pbuffer++); 00347 #endif 00348 data_to_transfer --; //decrements the number of bytes to transmit. 00349 } 00350 00351 if (Is_usb_nak_out_sent()) 00352 break; 00353 else 00354 Usb_send_control_in(); 00355 } 00356 00357 #if (USE_DEVICE_SN_UNIQUE==ENABLE) 00358 f_get_serial_string=FALSE; //end of signature transmission 00359 #endif 00360 00361 if((zlp == TRUE) && (!Is_usb_nak_out_sent())) 00362 { 00363 while(!Is_usb_read_control_enabled()); 00364 Usb_send_control_in(); 00365 } 00366 00367 while (!(Is_usb_nak_out_sent())); 00368 Usb_ack_nak_out(); 00369 Usb_ack_control_out(); 00370 return TRUE; 00371 }
void usb_set_address | ( | void | ) | [static] |
This function manages the SET ADDRESS request.
When complete, the device will filter the requests using the new address.
Definition at line 200 of file usb_standard_request.c.
References Is_usb_in_ready, Usb_ack_receive_setup, Usb_configure_address, Usb_enable_address, Usb_read_byte, and Usb_send_control_in.
Referenced by usb_process_request().
00201 { 00202 U8 addr = Usb_read_byte(); 00203 Usb_configure_address(addr); 00204 00205 Usb_ack_receive_setup(); 00206 00207 Usb_send_control_in(); // send a ZLP for STATUS phase 00208 while(!Is_usb_in_ready()); // waits for status phase done 00209 // before using the new address 00210 Usb_enable_address(); 00211 }
Bool usb_set_configuration | ( | void | ) | [static] |
This function manages the SET CONFIGURATION request.
If the selected configuration is valid, this function call the usb_user_endpoint_init() function that will configure the endpoints following the configuration number.
Definition at line 219 of file usb_standard_request.c.
References FALSE, NB_CONFIGURATION, TRUE, Usb_ack_receive_setup, usb_configuration_nb, Usb_read_byte, Usb_send_control_in, Usb_set_configuration_action, and usb_user_endpoint_init().
Referenced by usb_process_request().
00220 { 00221 U8 configuration_number; 00222 00223 // Get/Check new configuration 00224 configuration_number = Usb_read_byte(); 00225 if (configuration_number > NB_CONFIGURATION) 00226 return FALSE; // Bad configuration number then stall request 00227 Usb_ack_receive_setup(); 00228 usb_configuration_nb = configuration_number; 00229 00230 Usb_send_control_in(); // send a ZLP for STATUS phase 00231 usb_user_endpoint_init(usb_configuration_nb); // endpoint configuration 00232 Usb_set_configuration_action(); 00233 return TRUE; 00234 }
void usb_get_configuration | ( | void | ) | [static] |
This function manages the GET CONFIGURATION request.
The current configuration number is returned.
Definition at line 377 of file usb_standard_request.c.
References Is_usb_receive_out, Usb_ack_in_ready, Usb_ack_receive_out, Usb_ack_receive_setup, usb_configuration_nb, and Usb_write_byte.
Referenced by usb_process_request().
00378 { 00379 Usb_ack_receive_setup(); 00380 00381 Usb_write_byte(usb_configuration_nb); 00382 Usb_ack_in_ready(); 00383 00384 while( !Is_usb_receive_out() ); 00385 Usb_ack_receive_out(); 00386 }
This function manages the GET STATUS request.
The device, interface or endpoint status is returned.
< dummy read
< dummy read
Definition at line 392 of file usb_standard_request.c.
References device_status, endpoint_status, FALSE, Is_usb_receive_out, MSK_EP_DIR, TRUE, Usb_ack_receive_out, Usb_ack_receive_setup, Usb_read_byte, Usb_send_control_in, USB_SETUP_GET_STAND_DEVICE, USB_SETUP_GET_STAND_ENDPOINT, USB_SETUP_GET_STAND_INTERFACE, and Usb_write_byte.
Referenced by usb_process_request().
00393 { 00394 U8 wIndex; 00395 U8 dummy; 00396 00397 dummy = Usb_read_byte(); 00398 dummy = Usb_read_byte(); 00399 wIndex = Usb_read_byte(); 00400 00401 switch(bmRequestType) 00402 { 00403 case USB_SETUP_GET_STAND_DEVICE: 00404 Usb_ack_receive_setup(); 00405 Usb_write_byte(device_status); 00406 break; 00407 00408 case USB_SETUP_GET_STAND_INTERFACE: 00409 Usb_ack_receive_setup(); 00410 Usb_write_byte(0); // Reserved - always 0 00411 break; 00412 00413 case USB_SETUP_GET_STAND_ENDPOINT: 00414 Usb_ack_receive_setup(); 00415 wIndex = wIndex & MSK_EP_DIR; 00416 Usb_write_byte( endpoint_status[wIndex] ); 00417 break; 00418 00419 default: 00420 return FALSE; 00421 } 00422 Usb_write_byte(0); 00423 00424 Usb_send_control_in(); 00425 while( !Is_usb_receive_out() ); 00426 Usb_ack_receive_out(); 00427 return TRUE; 00428 }
This function manages the SET FEATURE request.
The USB test modes are supported by this function.
< dummy read
Definition at line 434 of file usb_standard_request.c.
References device_status, ENABLED, endpoint_status, EP_CONTROL, FALSE, FEATURE_DEVICE_REMOTE_WAKEUP, FEATURE_ENDPOINT_HALT, Is_usb_endpoint_enabled, MSK_EP_DIR, remote_wakeup_feature, TRUE, Usb_ack_receive_setup, USB_DEVICE_STATUS_REMOTEWAKEUP, Usb_enable_stall_handshake, Usb_read_byte, USB_REMOTE_WAKEUP, USB_REMOTE_WAKEUP_FEATURE, Usb_select_endpoint, Usb_send_control_in, USB_SETUP_SET_STAND_DEVICE, USB_SETUP_SET_STAND_ENDPOINT, and USB_SETUP_SET_STAND_INTERFACE.
Referenced by usb_process_request().
00435 { 00436 U8 wValue; 00437 U8 wIndex; 00438 U8 dummy; 00439 00440 switch (bmRequestType) 00441 { 00442 case USB_SETUP_SET_STAND_DEVICE: 00443 wValue = Usb_read_byte(); 00444 switch (wValue) 00445 { 00446 case USB_REMOTE_WAKEUP: 00447 if ((wValue != FEATURE_DEVICE_REMOTE_WAKEUP) 00448 || (USB_REMOTE_WAKEUP_FEATURE != ENABLED)) 00449 return FALSE; // Invalid request 00450 device_status |= USB_DEVICE_STATUS_REMOTEWAKEUP; 00451 remote_wakeup_feature = ENABLED; 00452 Usb_ack_receive_setup(); 00453 Usb_send_control_in(); 00454 break; 00455 00456 default: 00457 return FALSE; // Unknow request 00458 break; 00459 } 00460 break; 00461 00462 case USB_SETUP_SET_STAND_INTERFACE: 00463 return FALSE; // Unknow request 00464 break; 00465 00466 case USB_SETUP_SET_STAND_ENDPOINT: 00467 wValue = Usb_read_byte(); 00468 dummy = Usb_read_byte(); 00469 if (wValue != FEATURE_ENDPOINT_HALT) 00470 return FALSE; // Unknow request 00471 wIndex = (Usb_read_byte() & MSK_EP_DIR); 00472 if (wIndex == EP_CONTROL) 00473 { 00474 Usb_enable_stall_handshake(); 00475 Usb_ack_receive_setup(); 00476 } 00477 Usb_select_endpoint(wIndex); 00478 if( !Is_usb_endpoint_enabled()) 00479 { 00480 Usb_select_endpoint(EP_CONTROL); 00481 return FALSE; // Invalid request 00482 } 00483 Usb_enable_stall_handshake(); 00484 Usb_select_endpoint(EP_CONTROL); 00485 endpoint_status[wIndex] = 0x01; 00486 Usb_ack_receive_setup(); 00487 Usb_send_control_in(); 00488 break; 00489 00490 default: 00491 return FALSE; // Unknow request 00492 break; 00493 } 00494 return TRUE; 00495 }
This function manages the SET FEATURE request.
Definition at line 500 of file usb_standard_request.c.
References device_status, DISABLED, ENABLED, endpoint_status, EP_CONTROL, FALSE, FEATURE_DEVICE_REMOTE_WAKEUP, FEATURE_ENDPOINT_HALT, Is_usb_endpoint_enabled, MSK_EP_DIR, remote_wakeup_feature, TRUE, Usb_ack_receive_setup, USB_DEVICE_STATUS_REMOTEWAKEUP, Usb_disable_stall_handshake, Usb_read_byte, USB_REMOTE_WAKEUP_FEATURE, Usb_reset_data_toggle, Usb_reset_endpoint, Usb_select_endpoint, Usb_send_control_in, USB_SETUP_SET_STAND_DEVICE, USB_SETUP_SET_STAND_ENDPOINT, and USB_SETUP_SET_STAND_INTERFACE.
Referenced by usb_process_request().
00501 { 00502 U8 wValue; 00503 U8 wIndex; 00504 U8 dummy; 00505 00506 switch (bmRequestType) 00507 { 00508 case USB_SETUP_SET_STAND_DEVICE: 00509 wValue = Usb_read_byte(); 00510 if ((wValue != FEATURE_DEVICE_REMOTE_WAKEUP) || (USB_REMOTE_WAKEUP_FEATURE != ENABLED)) 00511 return FALSE; // Invalid request 00512 device_status &= ~USB_DEVICE_STATUS_REMOTEWAKEUP; 00513 remote_wakeup_feature = DISABLED; 00514 Usb_ack_receive_setup(); 00515 Usb_send_control_in(); 00516 break; 00517 00518 case USB_SETUP_SET_STAND_INTERFACE: 00519 return FALSE; // Unknow request 00520 break; 00521 00522 case USB_SETUP_SET_STAND_ENDPOINT: 00523 wValue = Usb_read_byte(); 00524 dummy = Usb_read_byte(); 00525 if (wValue != FEATURE_ENDPOINT_HALT) 00526 return FALSE; // Unknow request 00527 wIndex = (Usb_read_byte() & MSK_EP_DIR); 00528 Usb_select_endpoint(wIndex); 00529 if( !Is_usb_endpoint_enabled()) 00530 { 00531 Usb_select_endpoint(EP_CONTROL); 00532 return FALSE; // Invalid request 00533 } 00534 if(wIndex != EP_CONTROL) 00535 { 00536 Usb_disable_stall_handshake(); 00537 Usb_reset_endpoint(wIndex); 00538 Usb_reset_data_toggle(); 00539 } 00540 Usb_select_endpoint(EP_CONTROL); 00541 endpoint_status[wIndex] = 0x00; 00542 Usb_ack_receive_setup(); 00543 Usb_send_control_in(); 00544 break; 00545 00546 default: 00547 return FALSE; // Unknow request 00548 break; 00549 } 00550 return TRUE; 00551 }
Bool usb_get_interface | ( | void | ) | [static] |
This function manages the SETUP_GET_INTERFACE request.
Definition at line 556 of file usb_standard_request.c.
References FALSE, Is_usb_receive_out, LSB, MSB, TRUE, Usb_ack_receive_out, Usb_ack_receive_setup, Usb_read_byte, Usb_send_control_in, usb_user_interface_get(), and Usb_write_byte.
Referenced by usb_process_request().
00557 { 00558 U16 wInterface; 00559 U8 wValue_msb; 00560 U8 wValue_lsb; 00561 00562 // Read wValue 00563 wValue_lsb = Usb_read_byte(); 00564 wValue_msb = Usb_read_byte(); 00565 // wValue = Alternate Setting 00566 // wIndex = Interface 00567 LSB(wInterface)=Usb_read_byte(); 00568 MSB(wInterface)=Usb_read_byte(); 00569 if( (0!=wValue_msb) || (0!=wValue_msb) ) 00570 return FALSE; 00571 Usb_ack_receive_setup(); 00572 00573 Usb_write_byte( usb_user_interface_get(wInterface) ); 00574 Usb_send_control_in(); 00575 00576 while( !Is_usb_receive_out() ); 00577 Usb_ack_receive_out(); 00578 return TRUE; 00579 }
Bool usb_set_interface | ( | void | ) | [static] |
This function manages the SETUP_SET_INTERFACE request.
Definition at line 584 of file usb_standard_request.c.
References EP_CONTROL, FALSE, Is_usb_in_ready, LSB, MSB, TRUE, Usb_ack_receive_setup, Usb_read_byte, Usb_select_endpoint, Usb_send_control_in, and usb_user_interface_reset().
Referenced by usb_process_request().
00585 { 00586 U16 wInterface; 00587 U8 wValue_msb; 00588 U8 wValue_lsb; 00589 00590 // Read wValue 00591 wValue_lsb = Usb_read_byte(); 00592 wValue_msb = Usb_read_byte(); 00593 // wValue = Alternate Setting 00594 // wIndex = Interface 00595 LSB(wInterface)=Usb_read_byte(); 00596 MSB(wInterface)=Usb_read_byte(); 00597 if( 0!=wValue_msb ) 00598 return FALSE; 00599 Usb_ack_receive_setup(); 00600 00601 usb_user_interface_reset(wInterface, wValue_lsb); 00602 Usb_select_endpoint(EP_CONTROL); 00603 00604 Usb_send_control_in(); 00605 while(!Is_usb_in_ready()); 00606 return TRUE; 00607 }
Definition at line 91 of file usb_standard_request.c.
U8 endpoint_status[MAX_EP_NB] |
Definition at line 95 of file usb_standard_request.c.
Referenced by usb_clear_feature(), usb_get_status(), usb_process_request(), and usb_set_feature().
Definition at line 96 of file usb_standard_request.c.
U8 device_status = DEVICE_STATUS |
Definition at line 99 of file usb_standard_request.c.
Referenced by usb_clear_feature(), usb_get_status(), and usb_set_feature().