Merge pull request #1809 from hathach/host-cdc

Support Host CDC

3 files changed, 127 insertions, 11 deletions

diff --git a/src/common/tusb_debug.h b/src/common/tusb_debug.h
index ac5bee6ec..65fd1920d 100644
--- a/src/common/tusb_debug.h
+++ b/src/common/tusb_debug.h
@@ -66,7 +66,7 @@ static inline void tu_print_arr(uint8_t const* buf, uint32_t bufsize)
 #define TU_LOG(n, ...)        TU_XSTRCAT(TU_LOG, n)(__VA_ARGS__)
 #define TU_LOG_MEM(n, ...)    TU_XSTRCAT3(TU_LOG, n, _MEM)(__VA_ARGS__)
 #define TU_LOG_ARR(n, ...)    TU_XSTRCAT3(TU_LOG, n, _ARR)(__VA_ARGS__)
-#define TU_LOG_VAR(n, ...)    TU_XSTRCAT3(TU_LOG, n, _VAR)(__VA_ARGS__)
+#define TU_LOG_PTR(n, ...)    TU_XSTRCAT3(TU_LOG, n, _PTR)(__VA_ARGS__)
 #define TU_LOG_INT(n, ...)    TU_XSTRCAT3(TU_LOG, n, _INT)(__VA_ARGS__)
 #define TU_LOG_HEX(n, ...)    TU_XSTRCAT3(TU_LOG, n, _HEX)(__VA_ARGS__)
 #define TU_LOG_LOCATION()     tu_printf("%s: %d:\r\n", __PRETTY_FUNCTION__, __LINE__)
@@ -76,7 +76,7 @@ static inline void tu_print_arr(uint8_t const* buf, uint32_t bufsize)
 #define TU_LOG1               tu_printf
 #define TU_LOG1_MEM           tu_print_mem
 #define TU_LOG1_ARR(_x, _n)   tu_print_arr((uint8_t const*)(_x), _n)
-#define TU_LOG1_VAR(_x)       tu_print_arr((uint8_t const*)(_x), sizeof(*(_x)))
+#define TU_LOG1_PTR(_x)       tu_print_arr((uint8_t const*)(_x), sizeof(*(_x)))
 #define TU_LOG1_INT(_x)       tu_printf(#_x " = %ld\r\n", (unsigned long) (_x) )
 #define TU_LOG1_HEX(_x)       tu_printf(#_x " = %lX\r\n", (unsigned long) (_x) )
 
@@ -85,7 +85,7 @@ static inline void tu_print_arr(uint8_t const* buf, uint32_t bufsize)
   #define TU_LOG2             TU_LOG1
   #define TU_LOG2_MEM         TU_LOG1_MEM
   #define TU_LOG2_ARR         TU_LOG1_ARR
-  #define TU_LOG2_VAR         TU_LOG1_VAR
+  #define TU_LOG2_PTR         TU_LOG1_PTR
   #define TU_LOG2_INT         TU_LOG1_INT
   #define TU_LOG2_HEX         TU_LOG1_HEX
 #endif
@@ -95,7 +95,7 @@ static inline void tu_print_arr(uint8_t const* buf, uint32_t bufsize)
   #define TU_LOG3             TU_LOG1
   #define TU_LOG3_MEM         TU_LOG1_MEM
   #define TU_LOG3_ARR         TU_LOG1_ARR
-  #define TU_LOG3_VAR         TU_LOG1_VAR
+  #define TU_LOG3_PTR         TU_LOG1_PTR
   #define TU_LOG3_INT         TU_LOG1_INT
   #define TU_LOG3_HEX         TU_LOG1_HEX
 #endif
@@ -132,7 +132,7 @@ static inline const char* tu_lookup_find(tu_lookup_table_t const* p_table, uint3
 #ifndef TU_LOG
   #define TU_LOG(n, ...)
   #define TU_LOG_MEM(n, ...)
-  #define TU_LOG_VAR(n, ...)
+  #define TU_LOG_PTR(n, ...)
   #define TU_LOG_INT(n, ...)
   #define TU_LOG_HEX(n, ...)
   #define TU_LOG_LOCATION()
@@ -143,14 +143,14 @@ static inline const char* tu_lookup_find(tu_lookup_table_t const* p_table, uint3
 
 #define TU_LOG0(...)
 #define TU_LOG0_MEM(...)
-#define TU_LOG0_VAR(...)
+#define TU_LOG0_PTR(...)
 #define TU_LOG0_INT(...)
 #define TU_LOG0_HEX(...)
 
 #ifndef TU_LOG1
   #define TU_LOG1(...)
   #define TU_LOG1_MEM(...)
-  #define TU_LOG1_VAR(...)
+  #define TU_LOG1_PTR(...)
   #define TU_LOG1_INT(...)
   #define TU_LOG1_HEX(...)
 #endif
@@ -158,7 +158,7 @@ static inline const char* tu_lookup_find(tu_lookup_table_t const* p_table, uint3
 #ifndef TU_LOG2
   #define TU_LOG2(...)
   #define TU_LOG2_MEM(...)
-  #define TU_LOG2_VAR(...)
+  #define TU_LOG2_PTR(...)
   #define TU_LOG2_INT(...)
   #define TU_LOG2_HEX(...)
 #endif
@@ -166,7 +166,7 @@ static inline const char* tu_lookup_find(tu_lookup_table_t const* p_table, uint3
 #ifndef TU_LOG3
   #define TU_LOG3(...)
   #define TU_LOG3_MEM(...)
-  #define TU_LOG3_VAR(...)
+  #define TU_LOG3_PTR(...)
   #define TU_LOG3_INT(...)
   #define TU_LOG3_HEX(...)
 #endif
diff --git a/src/common/tusb_private.h b/src/common/tusb_private.h
index b34506f65..d0c7a84fb 100644
--- a/src/common/tusb_private.h
+++ b/src/common/tusb_private.h
@@ -28,6 +28,8 @@
 #ifndef _TUSB_PRIVATE_H_
 #define _TUSB_PRIVATE_H_
 
+// Internal Helper used by Host and Device Stack
+
 #ifdef __cplusplus
  extern "C" {
 #endif
@@ -39,8 +41,31 @@ typedef struct TU_ATTR_PACKED
   volatile uint8_t claimed : 1;
 }tu_edpt_state_t;
 
+typedef struct {
+  bool is_host; // host or device most
+  union {
+      uint8_t daddr;
+      uint8_t rhport;
+      uint8_t hwid;
+  };
+  uint8_t ep_addr;
+  uint8_t ep_speed;
+
+  uint16_t ep_packetsize;
+  uint16_t ep_bufsize;
+
+  // TODO xfer_fifo can skip this buffer
+  uint8_t* ep_buf;
+
+  tu_fifo_t ff;
+
+  // mutex: read if ep rx, write if e tx
+  OSAL_MUTEX_DEF(ff_mutex);
+
+}tu_edpt_stream_t;
+
 //--------------------------------------------------------------------+
-// Internal Helper used by Host and Device Stack
+// Endpoint
 //--------------------------------------------------------------------+
 
 // Check if endpoint descriptor is valid per USB specs
@@ -58,6 +83,84 @@ bool tu_edpt_claim(tu_edpt_state_t* ep_state, osal_mutex_t mutex);
 // Release an endpoint with provided mutex
 bool tu_edpt_release(tu_edpt_state_t* ep_state, osal_mutex_t mutex);
 
+//--------------------------------------------------------------------+
+// Endpoint Stream
+//--------------------------------------------------------------------+
+
+// Init an stream, should only be called once
+bool tu_edpt_stream_init(tu_edpt_stream_t* s, bool is_host, bool is_tx, bool overwritable,
+                         void* ff_buf, uint16_t ff_bufsize, uint8_t* ep_buf, uint16_t ep_bufsize);
+
+// Open an stream for an endpoint
+// hwid is either device address (host mode) or rhport (device mode)
+TU_ATTR_ALWAYS_INLINE static inline
+void tu_edpt_stream_open(tu_edpt_stream_t* s, uint8_t hwid, tusb_desc_endpoint_t const *desc_ep)
+{
+  tu_fifo_clear(&s->ff);
+  s->hwid = hwid;
+  s->ep_addr = desc_ep->bEndpointAddress;
+  s->ep_packetsize = tu_edpt_packet_size(desc_ep);
+}
+
+TU_ATTR_ALWAYS_INLINE static inline
+void tu_edpt_stream_close(tu_edpt_stream_t* s)
+{
+  s->hwid = 0;
+  s->ep_addr = 0;
+}
+
+// Clear fifo
+TU_ATTR_ALWAYS_INLINE static inline
+bool tu_edpt_stream_clear(tu_edpt_stream_t* s)
+{
+  return tu_fifo_clear(&s->ff);
+}
+
+//--------------------------------------------------------------------+
+// Stream Write
+//--------------------------------------------------------------------+
+
+// Write to stream
+uint32_t tu_edpt_stream_write(tu_edpt_stream_t* s, void const *buffer, uint32_t bufsize);
+
+// Start an usb transfer if endpoint is not busy
+uint32_t tu_edpt_stream_write_xfer(tu_edpt_stream_t* s);
+
+// Start an zero-length packet if needed
+bool tu_edpt_stream_write_zlp_if_needed(tu_edpt_stream_t* s, uint32_t last_xferred_bytes);
+
+// Get the number of bytes available for writing
+TU_ATTR_ALWAYS_INLINE static inline
+uint32_t tu_edpt_stream_write_available(tu_edpt_stream_t* s)
+{
+  return (uint32_t) tu_fifo_remaining(&s->ff);
+}
+
+//--------------------------------------------------------------------+
+// Stream Read
+//--------------------------------------------------------------------+
+
+// Read from stream
+uint32_t tu_edpt_stream_read(tu_edpt_stream_t* s, void* buffer, uint32_t bufsize);
+
+// Start an usb transfer if endpoint is not busy
+uint32_t tu_edpt_stream_read_xfer(tu_edpt_stream_t* s);
+
+// Must be called in the transfer complete callback
+TU_ATTR_ALWAYS_INLINE static inline
+void tu_edpt_stream_read_xfer_complete(tu_edpt_stream_t* s, uint32_t xferred_bytes)
+{
+  tu_fifo_write_n(&s->ff, s->ep_buf, (uint16_t) xferred_bytes);
+}
+
+// Get the number of bytes available for reading
+TU_ATTR_ALWAYS_INLINE static inline
+uint32_t tu_edpt_stream_read_available(tu_edpt_stream_t* s)
+{
+  return (uint32_t) tu_fifo_count(&s->ff);
+}
+
+
 #ifdef __cplusplus
  }
 #endif
diff --git a/src/common/tusb_types.h b/src/common/tusb_types.h
index 1bfa7c7d1..32cdba450 100644
--- a/src/common/tusb_types.h
+++ b/src/common/tusb_types.h
@@ -69,6 +69,15 @@ typedef enum
   TUSB_DIR_IN_MASK = 0x80
 }tusb_dir_t;
 
+enum
+{
+  TUSB_EPSIZE_BULK_FS = 64,
+  TUSB_EPSIZE_BULK_HS= 512,
+
+  TUSB_EPSIZE_ISO_FS_MAX = 1023,
+  TUSB_EPSIZE_ISO_HS_MAX = 1024,
+};
+
 /// Isochronous End Point Attributes
 typedef enum
 {
@@ -243,7 +252,6 @@ enum
   INTERFACE_INVALID_NUMBER = 0xff
 };
 
-
 typedef enum
 {
   MS_OS_20_SET_HEADER_DESCRIPTOR       = 0x00,
@@ -265,6 +273,11 @@ enum
   CONTROL_STAGE_ACK
 };
 
+enum
+{
+  TUSB_INDEX_INVALID = 0xff
+};
+
 //--------------------------------------------------------------------+
 // USB Descriptors
 //--------------------------------------------------------------------+