add tud_descriptor_string_cb() for getting string descriptor from application

- remove tud_desc_set.string_arr/string_count

1 files changed, 7 insertions, 6 deletions

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);