From de56a0ca8987c15c06112ece2589dab18f1d6666 Mon Sep 17 00:00:00 2001 From: hathach Date: Sat, 11 May 2019 16:31:08 +0700 Subject: [PATCH 1/3] add tud_descriptor_string_cb() for getting string descriptor from application - remove tud_desc_set.string_arr/string_count --- .../device/cdc_msc_hid/src/usb_descriptors.c | 70 ++++++++++-------- .../src/usb_descriptors.c | 71 +++++++++++-------- .../hid_generic_inout/src/usb_descriptors.c | 65 +++++++++++------ .../device/msc_dual_lun/src/usb_descriptors.c | 66 +++++++++++------ src/common/tusb_common.h | 5 ++ src/device/usbd.c | 53 ++++++-------- src/device/usbd.h | 13 ++-- src/device/usbd_control.c | 2 +- 8 files changed, 208 insertions(+), 137 deletions(-) diff --git a/examples/device/cdc_msc_hid/src/usb_descriptors.c b/examples/device/cdc_msc_hid/src/usb_descriptors.c index ef3cc9cef..6ddc11a82 100644 --- a/examples/device/cdc_msc_hid/src/usb_descriptors.c +++ b/examples/device/cdc_msc_hid/src/usb_descriptors.c @@ -136,31 +136,6 @@ uint8_t const desc_configuration[] = #endif }; -//------------- String Descriptors -------------// -// array of pointer to string descriptors -uint16_t const * const string_desc_arr [] = -{ - // 0: is supported language = English - TUD_DESC_STRCONV(0x0409), - - // 1: Manufacturer - TUD_DESC_STRCONV('t', 'i', 'n', 'y', 'u', 's', 'b', '.', 'o', 'r', 'g'), - - // 2: Product - TUD_DESC_STRCONV('t', 'i', 'n', 'y', 'u', 's', 'b', ' ', 'd', 'e', 'v', 'i', 'c', 'e'), - - // 3: Serials, should use chip ID - TUD_DESC_STRCONV('1', '2', '3', '4', '5', '6'), - - // 4: CDC Interface - TUD_DESC_STRCONV('t','u','s','b',' ','c','d','c'), - - // 5: MSC Interface - TUD_DESC_STRCONV('t','u','s','b',' ','m','s','c'), - - // 6: HID - TUD_DESC_STRCONV('t','u','s','b',' ','h','i','d') -}; // tud_desc_set is required by tinyusb stack tud_desc_set_t tud_desc_set = @@ -168,10 +143,49 @@ tud_desc_set_t tud_desc_set = .device = &desc_device, .config = desc_configuration, - .string_arr = (uint8_t const **) string_desc_arr, - .string_count = sizeof(string_desc_arr)/sizeof(string_desc_arr[0]), - #if CFG_TUD_HID .hid_report = desc_hid_report, #endif }; + +//------------- String Descriptors -------------// + +// array of pointer to string descriptors +char const* string_desc_arr [] = +{ + (const char[]) { 0x09, 0x04 }, // 0: is supported language is English (0x0409) + "TinyUSB", // 1: Manufacturer + "TinyUSB Device", // 2: Product + "123456", // 3: Serials, should use chip ID + "TinyUSB CDC", // 4: CDC Interface + "TinyUSB MSC", // 5: MSC Interface + "TinyUSB HID" // 6: HID +}; + +// Invoked when received GET_STRING_DESC request +// max_char is CFG_TUD_ENDOINT0_SIZE/2 -1, typically max_char = 31 if Endpoint0 size is 64 +// Return number of characters. Note usb string is in 16-bits unicode format +uint8_t tud_descriptor_string_cb(uint8_t index, uint16_t* desc, uint8_t max_char) +{ + if ( index == 0) + { + memcpy(desc, string_desc_arr[0], 2); + return 1; + }else + { + if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return 0; + + const char* str = string_desc_arr[index]; + + // Cap at max char + uint8_t count = strlen(str); + if ( count > max_char ) count = max_char; + + for(uint8_t i=0; i max_char ) count = max_char; + + for(uint8_t i=0; i max_char ) count = max_char; + + for(uint8_t i=0; i max_char ) count = max_char; + + for(uint8_t i=0; i> 8)) & 0x00ff); diff --git a/src/device/usbd.c b/src/device/usbd.c index 434a2c3d8..8812a70f4 100644 --- a/src/device/usbd.c +++ b/src/device/usbd.c @@ -160,7 +160,7 @@ static osal_queue_t _usbd_q; static void mark_interface_endpoint(uint8_t ep2drv[8][2], uint8_t const* p_desc, uint16_t desc_len, uint8_t driver_id); static bool process_control_request(uint8_t rhport, tusb_control_request_t const * p_request); static bool process_set_config(uint8_t rhport); -static void const* get_descriptor(tusb_control_request_t const * p_request, uint16_t* desc_len); +static bool process_get_descriptor(uint8_t rhport, tusb_control_request_t const * p_request); void usbd_control_reset (uint8_t rhport); bool usbd_control_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes); @@ -382,13 +382,7 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const break; case TUSB_REQ_GET_DESCRIPTOR: - { - uint16_t len = 0; - void* buf = (void*) get_descriptor(p_request, &len); - if ( buf == NULL || len == 0 ) return false; - - usbd_control_xfer(rhport, p_request, buf, len); - } + TU_ASSERT( process_get_descriptor(rhport, p_request) ); break; case TUSB_REQ_SET_FEATURE: @@ -556,56 +550,53 @@ static void mark_interface_endpoint(uint8_t ep2drv[8][2], uint8_t const* p_desc, } // return descriptor's buffer and update desc_len -static void const* get_descriptor(tusb_control_request_t const * p_request, uint16_t* desc_len) +static bool process_get_descriptor(uint8_t rhport, tusb_control_request_t const * p_request) { tusb_desc_type_t const desc_type = (tusb_desc_type_t) tu_u16_high(p_request->wValue); uint8_t const desc_index = tu_u16_low( p_request->wValue ); - uint8_t const * desc_data = NULL; - uint16_t len = 0; - - *desc_len = 0; - switch(desc_type) { case TUSB_DESC_DEVICE: - desc_data = (uint8_t const *) tud_desc_set.device; - len = sizeof(tusb_desc_device_t); + return usbd_control_xfer(rhport, p_request, (void*) tud_desc_set.device, sizeof(tusb_desc_device_t)); break; case TUSB_DESC_CONFIGURATION: - desc_data = (uint8_t const *) tud_desc_set.config; - len = ((tusb_desc_configuration_t const*) desc_data)->wTotalLength; + return usbd_control_xfer(rhport, p_request, (void*) tud_desc_set.config, ((tusb_desc_configuration_t const*) tud_desc_set.config)->wTotalLength); break; case TUSB_DESC_STRING: // String Descriptor always uses the desc set from user - if ( desc_index < tud_desc_set.string_count ) + if ( desc_index == 0xEE ) { - desc_data = tud_desc_set.string_arr[desc_index]; - TU_VERIFY( desc_data != NULL, NULL ); - - len = desc_data[0]; // first byte of descriptor is its size - }else - { - // out of range // The 0xEE index string is a Microsoft USB extension. // It can be used to tell Windows what driver it should use for the device !!! - return NULL; + return false; + }else + { + uint16_t desc_str[CFG_TUD_ENDOINT0_SIZE/2]; // up to endpoint0 size only + uint8_t len = 2*tud_descriptor_string_cb(desc_index, desc_str+1, CFG_TUD_ENDOINT0_SIZE/2-1); + + TU_ASSERT(len > 0); + + // first byte of descriptor is size, second byte is string type + len += 2; // header len + desc_str[0] = tu_u16_from_u8(TUSB_DESC_STRING, len); + + return usbd_control_xfer(rhport, p_request, desc_str, len); } break; case TUSB_DESC_DEVICE_QUALIFIER: // TODO If not highspeed capable stall this request otherwise // return the descriptor that could work in highspeed - return NULL; + return false; break; - default: return NULL; + default: return false; } - *desc_len = len; - return desc_data; + return true; } //--------------------------------------------------------------------+ diff --git a/src/device/usbd.h b/src/device/usbd.h index 8debbf535..0e7ed58f1 100644 --- a/src/device/usbd.h +++ b/src/device/usbd.h @@ -39,12 +39,8 @@ /// \brief Descriptor pointer collector to all the needed. typedef struct { - void const * device; ///< pointer to device descriptor \ref tusb_desc_device_t - void const * config; ///< pointer to the whole configuration descriptor, starting by \ref tusb_desc_configuration_t - - uint8_t const** string_arr; ///< a array of pointers to string descriptors - uint16_t string_count; - + void const * device; ///< pointer to device descriptor \ref tusb_desc_device_t + void const * config; ///< pointer to the whole configuration descriptor, starting by \ref tusb_desc_configuration_t uint8_t const* hid_report; }tud_desc_set_t; @@ -78,6 +74,11 @@ bool tud_remote_wakeup(void); // Application Callbacks (WEAK is optional) //--------------------------------------------------------------------+ +// Invoked when received GET_STRING_DESC request +// max_char is CFG_TUD_ENDOINT0_SIZE/2 -1, typically max_char = 31 if Endpoint0 size is 64 +// Return number of characters. Note usb string is in 16-bits unicode format +uint8_t tud_descriptor_string_cb(uint8_t index, uint16_t* desc, uint8_t max_char); + // Invoked when device is mounted (configured) ATTR_WEAK void tud_mount_cb(void); diff --git a/src/device/usbd_control.c b/src/device/usbd_control.c index 8460a11b0..31f447c03 100644 --- a/src/device/usbd_control.c +++ b/src/device/usbd_control.c @@ -93,7 +93,7 @@ bool usbd_control_xfer(uint8_t rhport, tusb_control_request_t const * request, v _control_state.total_len = tu_min16(len, request->wLength); _control_state.total_transferred = 0; - if ( buffer != NULL && len ) + if ( (buffer != NULL) && len ) { // Data stage TU_ASSERT( start_control_data_xact(rhport) ); From ba2136486c153edd372eadaa325dab27fe1297b2 Mon Sep 17 00:00:00 2001 From: hathach Date: Sun, 12 May 2019 14:09:35 +0700 Subject: [PATCH 2/3] add tud_hid_descriptor_report_cb() - remove tud_desc_set.hid_report - remove tud_desc_set_t --- .../device/cdc_msc_hid/src/usb_descriptors.c | 52 ++++++++++++------- .../src/usb_descriptors.c | 51 +++++++++++------- .../hid_generic_inout/src/usb_descriptors.c | 28 +++++++--- .../device/msc_dual_lun/src/usb_descriptors.c | 21 ++++---- src/class/hid/hid_device.c | 3 +- src/class/hid/hid_device.h | 5 ++ src/device/usbd.c | 9 ++-- src/device/usbd.h | 24 ++++----- src/device/usbd_control.c | 4 +- 9 files changed, 123 insertions(+), 74 deletions(-) diff --git a/examples/device/cdc_msc_hid/src/usb_descriptors.c b/examples/device/cdc_msc_hid/src/usb_descriptors.c index 6ddc11a82..bb830ca27 100644 --- a/examples/device/cdc_msc_hid/src/usb_descriptors.c +++ b/examples/device/cdc_msc_hid/src/usb_descriptors.c @@ -79,25 +79,34 @@ uint8_t const desc_hid_report[] = TUD_HID_REPORT_DESC_KEYBOARD( HID_REPORT_ID(REPORT_ID_KEYBOARD), ), TUD_HID_REPORT_DESC_MOUSE ( HID_REPORT_ID(REPORT_ID_MOUSE), ) }; + +// Invoked when received GET HID REPORT DESCRIPTOR +// Application return pointer to descriptor +// Descriptor contents must exist long enough for transfer to complete +uint8_t const * tud_hid_descriptor_report_cb(void) +{ + return desc_hid_report; +} + #endif //------------- Configuration Descriptor -------------// enum { - #if CFG_TUD_CDC - ITF_NUM_CDC = 0, - ITF_NUM_CDC_DATA, - #endif +#if CFG_TUD_CDC + ITF_NUM_CDC = 0, + ITF_NUM_CDC_DATA, +#endif - #if CFG_TUD_MSC - ITF_NUM_MSC, - #endif +#if CFG_TUD_MSC + ITF_NUM_MSC, +#endif - #if CFG_TUD_HID - ITF_NUM_HID, - #endif +#if CFG_TUD_HID + ITF_NUM_HID, +#endif - ITF_NUM_TOTAL + ITF_NUM_TOTAL }; enum @@ -136,17 +145,20 @@ uint8_t const desc_configuration[] = #endif }; - -// tud_desc_set is required by tinyusb stack -tud_desc_set_t tud_desc_set = +// Invoked when received GET DEVICE DESCRIPTOR +// Application return pointer to descriptor +uint8_t const * tud_descriptor_device_cb(void) { - .device = &desc_device, - .config = desc_configuration, + return (uint8_t const *) &desc_device; +} -#if CFG_TUD_HID - .hid_report = desc_hid_report, -#endif -}; +// Invoked when received GET CONFIGURATION DESCRIPTOR +// Application return pointer to descriptor +// Descriptor contents must exist long enough for transfer to complete +uint8_t const * tud_descriptor_configuration_cb(void) +{ + return desc_configuration; +} //------------- String Descriptors -------------// diff --git a/examples/device/cdc_msc_hid_freertos/src/usb_descriptors.c b/examples/device/cdc_msc_hid_freertos/src/usb_descriptors.c index 0a2970a63..fad6794a7 100644 --- a/examples/device/cdc_msc_hid_freertos/src/usb_descriptors.c +++ b/examples/device/cdc_msc_hid_freertos/src/usb_descriptors.c @@ -79,25 +79,34 @@ uint8_t const desc_hid_report[] = TUD_HID_REPORT_DESC_KEYBOARD( HID_REPORT_ID(REPORT_ID_KEYBOARD), ), TUD_HID_REPORT_DESC_MOUSE ( HID_REPORT_ID(REPORT_ID_MOUSE), ) }; + +// Invoked when received GET HID REPORT DESCRIPTOR +// Application return pointer to descriptor +// Descriptor contents must exist long enough for transfer to complete +uint8_t const * tud_hid_descriptor_report_cb(void) +{ + return desc_hid_report; +} + #endif //------------- Configuration Descriptor -------------// enum { - #if CFG_TUD_CDC - ITF_NUM_CDC = 0, - ITF_NUM_CDC_DATA, - #endif +#if CFG_TUD_CDC + ITF_NUM_CDC = 0, + ITF_NUM_CDC_DATA, +#endif - #if CFG_TUD_MSC - ITF_NUM_MSC, - #endif +#if CFG_TUD_MSC + ITF_NUM_MSC, +#endif - #if CFG_TUD_HID - ITF_NUM_HID, - #endif +#if CFG_TUD_HID + ITF_NUM_HID, +#endif - ITF_NUM_TOTAL + ITF_NUM_TOTAL }; enum @@ -136,16 +145,20 @@ uint8_t const desc_configuration[] = #endif }; -// tud_desc_set is required by tinyusb stack -tud_desc_set_t tud_desc_set = +// Invoked when received GET DEVICE DESCRIPTOR +// Application return pointer to descriptor +uint8_t const * tud_descriptor_device_cb(void) { - .device = &desc_device, - .config = desc_configuration, + return (uint8_t const *) &desc_device; +} -#if CFG_TUD_HID - .hid_report = desc_hid_report, -#endif -}; +// Invoked when received GET CONFIGURATION DESCRIPTOR +// Application return pointer to descriptor +// Descriptor contents must exist long enough for transfer to complete +uint8_t const * tud_descriptor_configuration_cb(void) +{ + return desc_configuration; +} //------------- String Descriptors -------------// diff --git a/examples/device/hid_generic_inout/src/usb_descriptors.c b/examples/device/hid_generic_inout/src/usb_descriptors.c index b25915ceb..2b0e40d9c 100644 --- a/examples/device/hid_generic_inout/src/usb_descriptors.c +++ b/examples/device/hid_generic_inout/src/usb_descriptors.c @@ -89,16 +89,28 @@ uint8_t const desc_configuration[] = }; -// tud_desc_set is required by tinyusb stack -tud_desc_set_t tud_desc_set = +// Invoked when received GET DEVICE DESCRIPTOR +// Application return pointer to descriptor +uint8_t const * tud_descriptor_device_cb(void) { - .device = &desc_device, - .config = desc_configuration, + return (uint8_t const *) &desc_device; +} -#if CFG_TUD_HID - .hid_report = desc_hid_report, -#endif -}; +// Invoked when received GET CONFIGURATION DESCRIPTOR +// Application return pointer to descriptor +// Descriptor contents must exist long enough for transfer to complete +uint8_t const * tud_descriptor_configuration_cb(void) +{ + return desc_configuration; +} + +// Invoked when received GET HID REPORT DESCRIPTOR +// Application return pointer to descriptor +// Descriptor contents must exist long enough for transfer to complete +uint8_t const * tud_hid_descriptor_report_cb(void) +{ + return desc_hid_report; +} //------------- String Descriptors -------------// diff --git a/examples/device/msc_dual_lun/src/usb_descriptors.c b/examples/device/msc_dual_lun/src/usb_descriptors.c index 43a785024..5c01d9e6b 100644 --- a/examples/device/msc_dual_lun/src/usb_descriptors.c +++ b/examples/device/msc_dual_lun/src/usb_descriptors.c @@ -82,17 +82,20 @@ uint8_t const desc_configuration[] = TUD_MSC_DESCRIPTOR(ITF_NUM_MSC, 0, EPNUM_MSC, 0x80 | EPNUM_MSC, 64), // highspeed 512 }; - -// tud_desc_set is required by tinyusb stack -tud_desc_set_t tud_desc_set = +// Invoked when received GET DEVICE DESCRIPTOR +// Application return pointer to descriptor +uint8_t const * tud_descriptor_device_cb(void) { - .device = &desc_device, - .config = desc_configuration, + return (uint8_t const *) &desc_device; +} -#if CFG_TUD_HID - .hid_report = desc_hid_report, -#endif -}; +// Invoked when received GET CONFIGURATION DESCRIPTOR +// Application return pointer to descriptor +// Descriptor contents must exist long enough for transfer to complete +uint8_t const * tud_descriptor_configuration_cb(void) +{ + return desc_configuration; +} //------------- String Descriptors -------------// diff --git a/src/class/hid/hid_device.c b/src/class/hid/hid_device.c index e82932e1f..1c971a606 100644 --- a/src/class/hid/hid_device.c +++ b/src/class/hid/hid_device.c @@ -201,7 +201,8 @@ bool hidd_control_request(uint8_t rhport, tusb_control_request_t const * p_reque if (p_request->bRequest == TUSB_REQ_GET_DESCRIPTOR && desc_type == HID_DESC_TYPE_REPORT) { - usbd_control_xfer(rhport, p_request, (void*) tud_desc_set.hid_report, p_hid->reprot_desc_len); + uint8_t const * desc_report = tud_hid_descriptor_report_cb(); + usbd_control_xfer(rhport, p_request, (void*) desc_report, p_hid->reprot_desc_len); }else { return false; // stall unsupported request diff --git a/src/class/hid/hid_device.h b/src/class/hid/hid_device.h index 825be2181..9becab148 100644 --- a/src/class/hid/hid_device.h +++ b/src/class/hid/hid_device.h @@ -68,6 +68,11 @@ bool tud_hid_mouse_report(uint8_t report_id, uint8_t buttons, int8_t x, int8_t y // Callbacks (Weak is optional) //--------------------------------------------------------------------+ +// Invoked when received GET HID REPORT DESCRIPTOR +// Application return pointer to descriptor +// Descriptor contents must exist long enough for transfer to complete +uint8_t const * tud_hid_descriptor_report_cb(void); + // Invoked when received GET_REPORT control request // Application must fill buffer report's content and return its length. // Return zero will cause the stack to STALL request diff --git a/src/device/usbd.c b/src/device/usbd.c index 8812a70f4..64ed7668e 100644 --- a/src/device/usbd.c +++ b/src/device/usbd.c @@ -479,7 +479,7 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const // This function parse configuration descriptor & open drivers accordingly static bool process_set_config(uint8_t rhport) { - tusb_desc_configuration_t const * desc_cfg = (tusb_desc_configuration_t const *) tud_desc_set.config; + tusb_desc_configuration_t const * desc_cfg = (tusb_desc_configuration_t const *) tud_descriptor_configuration_cb(); TU_ASSERT(desc_cfg != NULL && desc_cfg->bDescriptorType == TUSB_DESC_CONFIGURATION); // Parse configuration descriptor @@ -558,11 +558,14 @@ static bool process_get_descriptor(uint8_t rhport, tusb_control_request_t const switch(desc_type) { case TUSB_DESC_DEVICE: - return usbd_control_xfer(rhport, p_request, (void*) tud_desc_set.device, sizeof(tusb_desc_device_t)); + return usbd_control_xfer(rhport, p_request, (void*) tud_descriptor_device_cb(), sizeof(tusb_desc_device_t)); break; case TUSB_DESC_CONFIGURATION: - return usbd_control_xfer(rhport, p_request, (void*) tud_desc_set.config, ((tusb_desc_configuration_t const*) tud_desc_set.config)->wTotalLength); + { + tusb_desc_configuration_t const* desc_config = (tusb_desc_configuration_t const*) tud_descriptor_configuration_cb(); + return usbd_control_xfer(rhport, p_request, (void*) desc_config, desc_config->wTotalLength); + } break; case TUSB_DESC_STRING: diff --git a/src/device/usbd.h b/src/device/usbd.h index 0e7ed58f1..f8485166d 100644 --- a/src/device/usbd.h +++ b/src/device/usbd.h @@ -37,17 +37,6 @@ #include "common/tusb_common.h" #include "device/dcd.h" -/// \brief Descriptor pointer collector to all the needed. -typedef struct { - void const * device; ///< pointer to device descriptor \ref tusb_desc_device_t - void const * config; ///< pointer to the whole configuration descriptor, starting by \ref tusb_desc_configuration_t - uint8_t const* hid_report; - -}tud_desc_set_t; - -// Descriptor collection set, must be defined by application -extern tud_desc_set_t tud_desc_set; - //--------------------------------------------------------------------+ // Application API //--------------------------------------------------------------------+ @@ -74,9 +63,18 @@ bool tud_remote_wakeup(void); // Application Callbacks (WEAK is optional) //--------------------------------------------------------------------+ -// Invoked when received GET_STRING_DESC request +// Invoked when received GET DEVICE DESCRIPTOR +// Application return pointer to descriptor +uint8_t const * tud_descriptor_device_cb(void); + +// Invoked when received GET CONFIGURATION DESCRIPTOR +// Application return pointer to descriptor +// Descriptor contents must exist long enough for transfer to complete +uint8_t const * tud_descriptor_configuration_cb(void); + +// Invoked when received GET STRING DESC request // max_char is CFG_TUD_ENDOINT0_SIZE/2 -1, typically max_char = 31 if Endpoint0 size is 64 -// Return number of characters. Note usb string is in 16-bits unicode format +// Return number of characters. Note usb string is in UTF-16 format uint8_t tud_descriptor_string_cb(uint8_t index, uint16_t* desc, uint8_t max_char); // Invoked when device is mounted (configured) diff --git a/src/device/usbd_control.c b/src/device/usbd_control.c index 31f447c03..0b878fbcb 100644 --- a/src/device/usbd_control.c +++ b/src/device/usbd_control.c @@ -93,8 +93,10 @@ bool usbd_control_xfer(uint8_t rhport, tusb_control_request_t const * request, v _control_state.total_len = tu_min16(len, request->wLength); _control_state.total_transferred = 0; - if ( (buffer != NULL) && len ) + if ( len ) { + TU_ASSERT(buffer); + // Data stage TU_ASSERT( start_control_data_xact(rhport) ); }else From 1174949308bb7595e99fd5789ebf3466cf2ab123 Mon Sep 17 00:00:00 2001 From: hathach Date: Sun, 12 May 2019 15:38:15 +0700 Subject: [PATCH 3/3] change tud_descriptor_string_cb() to be consistent with other descriptor callback --- .../device/cdc_msc_hid/src/usb_descriptors.c | 32 +++++++++++-------- .../src/usb_descriptors.c | 32 +++++++++++-------- .../hid_generic_inout/src/usb_descriptors.c | 32 +++++++++++-------- .../device/msc_dual_lun/src/usb_descriptors.c | 32 +++++++++++-------- src/class/hid/hid_device.h | 5 ++- src/common/tusb_types.h | 4 +-- src/device/usbd.c | 13 +++----- src/device/usbd.h | 14 ++++---- 8 files changed, 90 insertions(+), 74 deletions(-) diff --git a/examples/device/cdc_msc_hid/src/usb_descriptors.c b/examples/device/cdc_msc_hid/src/usb_descriptors.c index bb830ca27..73c8e7ce1 100644 --- a/examples/device/cdc_msc_hid/src/usb_descriptors.c +++ b/examples/device/cdc_msc_hid/src/usb_descriptors.c @@ -174,30 +174,36 @@ char const* string_desc_arr [] = "TinyUSB HID" // 6: HID }; -// Invoked when received GET_STRING_DESC request -// max_char is CFG_TUD_ENDOINT0_SIZE/2 -1, typically max_char = 31 if Endpoint0 size is 64 -// Return number of characters. Note usb string is in 16-bits unicode format -uint8_t tud_descriptor_string_cb(uint8_t index, uint16_t* desc, uint8_t max_char) +static uint16_t _desc_str[32]; + +// Invoked when received GET STRING DESCRIPTOR request +// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete +uint16_t const* tud_descriptor_string_cb(uint8_t index) { + uint8_t chr_count; + if ( index == 0) { - memcpy(desc, string_desc_arr[0], 2); - return 1; + memcpy(&_desc_str[1], string_desc_arr[0], 2); + chr_count = 1; }else { - if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return 0; + if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL; const char* str = string_desc_arr[index]; // Cap at max char - uint8_t count = strlen(str); - if ( count > max_char ) count = max_char; + chr_count = strlen(str); + if ( chr_count > 31 ) chr_count = 31; - for(uint8_t i=0; i max_char ) count = max_char; + chr_count = strlen(str); + if ( chr_count > 31 ) chr_count = 31; - for(uint8_t i=0; i max_char ) count = max_char; + chr_count = strlen(str); + if ( chr_count > 31 ) chr_count = 31; - for(uint8_t i=0; i max_char ) count = max_char; + chr_count = strlen(str); + if ( chr_count > 31 ) chr_count = 31; - for(uint8_t i=0; i 0); - - // first byte of descriptor is size, second byte is string type - len += 2; // header len - desc_str[0] = tu_u16_from_u8(TUSB_DESC_STRING, len); - - return usbd_control_xfer(rhport, p_request, desc_str, len); + // first byte of descriptor is its size + return usbd_control_xfer(rhport, p_request, (void*) desc_str, desc_str[0]); } break; diff --git a/src/device/usbd.h b/src/device/usbd.h index f8485166d..8193c4ce0 100644 --- a/src/device/usbd.h +++ b/src/device/usbd.h @@ -63,19 +63,17 @@ bool tud_remote_wakeup(void); // Application Callbacks (WEAK is optional) //--------------------------------------------------------------------+ -// Invoked when received GET DEVICE DESCRIPTOR +// Invoked when received GET DEVICE DESCRIPTOR request // Application return pointer to descriptor uint8_t const * tud_descriptor_device_cb(void); -// Invoked when received GET CONFIGURATION DESCRIPTOR -// Application return pointer to descriptor -// Descriptor contents must exist long enough for transfer to complete +// Invoked when received GET CONFIGURATION DESCRIPTOR request +// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete uint8_t const * tud_descriptor_configuration_cb(void); -// Invoked when received GET STRING DESC request -// max_char is CFG_TUD_ENDOINT0_SIZE/2 -1, typically max_char = 31 if Endpoint0 size is 64 -// Return number of characters. Note usb string is in UTF-16 format -uint8_t tud_descriptor_string_cb(uint8_t index, uint16_t* desc, uint8_t max_char); +// Invoked when received GET STRING DESCRIPTOR request +// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete +uint16_t const* tud_descriptor_string_cb(uint8_t index); // Invoked when device is mounted (configured) ATTR_WEAK void tud_mount_cb(void);