2 files changed, 17 insertions, 4 deletions
diff --git a/src/class/vendor/vendor_device.c b/src/class/vendor/vendor_device.c
index 2cd815fb4..33fb98470 100644
--- a/src/class/vendor/vendor_device.c
+++ b/src/class/vendor/vendor_device.c
@@ -113,7 +113,7 @@ static bool maybe_transmit(vendord_interface_t* p_itf)
   return true;
 }
 
-uint32_t tud_vendor_n_write (uint8_t itf, uint8_t const* buffer, uint32_t bufsize)
+uint32_t tud_vendor_n_write (uint8_t itf, void const* buffer, uint32_t bufsize)
 {
   vendord_interface_t* p_itf = &_vendord_itf[itf];
   uint16_t ret = tu_fifo_write_n(&p_itf->tx_ff, buffer, bufsize);
diff --git a/src/class/vendor/vendor_device.h b/src/class/vendor/vendor_device.h
index 08deba5ab..d214c29ee 100644
--- a/src/class/vendor/vendor_device.h
+++ b/src/class/vendor/vendor_device.h
@@ -52,7 +52,9 @@
 bool     tud_vendor_n_mounted    (uint8_t itf);
 uint32_t tud_vendor_n_available  (uint8_t itf);
 uint32_t tud_vendor_n_read       (uint8_t itf, void* buffer, uint32_t bufsize);
-uint32_t tud_vendor_n_write      (uint8_t itf, uint8_t const* buffer, uint32_t bufsize);
+uint32_t tud_vendor_n_write      (uint8_t itf, void const* buffer, uint32_t bufsize);
+
+static inline uint32_t tud_vendor_n_write_str  (uint8_t itf, char const* str);
 
 //--------------------------------------------------------------------+
 // Application API (Single Port)
@@ -60,7 +62,8 @@ uint32_t tud_vendor_n_write      (uint8_t itf, uint8_t const* buffer, uint32_t b
 static inline bool     tud_vendor_mounted    (void);
 static inline uint32_t tud_vendor_available  (void);
 static inline uint32_t tud_vendor_read       (void* buffer, uint32_t bufsize);
-static inline uint32_t tud_vendor_write      (uint8_t const* buffer, uint32_t bufsize);
+static inline uint32_t tud_vendor_write      (void const* buffer, uint32_t bufsize);
+static inline uint32_t tud_vendor_write_str  (char const* str);
 
 //--------------------------------------------------------------------+
 // Application Callback API (weak is optional)
@@ -73,6 +76,11 @@ TU_ATTR_WEAK void tud_vendor_rx_cb(uint8_t itf);
 // Inline Functions
 //--------------------------------------------------------------------+
 
+static inline uint32_t tud_vendor_n_write_str (uint8_t itf, char const* str)
+{
+  return tud_vendor_n_write(itf, str, strlen(str));
+}
+
 static inline bool tud_vendor_mounted (void)
 {
   return tud_vendor_n_mounted(0);
@@ -88,11 +96,16 @@ static inline uint32_t tud_vendor_read (void* buffer, uint32_t bufsize)
   return tud_vendor_n_read(0, buffer, bufsize);
 }
 
-static inline uint32_t tud_vendor_write (uint8_t const* buffer, uint32_t bufsize)
+static inline uint32_t tud_vendor_write (void const* buffer, uint32_t bufsize)
 {
   return tud_vendor_n_write(0, buffer, bufsize);
 }
 
+static inline uint32_t tud_vendor_write_str (char const* str)
+{
+  return tud_vendor_n_write_str(0, str);
+}
+
 //--------------------------------------------------------------------+
 // Internal Class Driver API
 //--------------------------------------------------------------------+