updated readme a little

CMakeLists.txt

@@ -4,11 +4,13 @@ project(tf)
 set(CMAKE_CXX_STANDARD GNU89)
 
 set(SOURCE_FILES
-        demo/test/test.c
+        demo/simple/test.c
-        demo/test/TF_Config.h
+        demo/simple/TF_Config.h
-        demo/hello/master.c
+        demo/socket_demo/master.c
-        demo/hello/slave.c
+        demo/socket_demo/slave.c
-        demo/hello/TF_Config.h
+        demo/socket_demo/TF_Config.h
+        demo/multipart_tx/test.c
+        demo/multipart_tx/TF_Config.h
         demo/demo.c
         demo/demo.h
         TinyFrame.c
@@ -18,6 +20,6 @@ set(SOURCE_FILES
         demo/utils.h
         )
 
-include_directories(demo/test)
+include_directories(demo/simple)
 
 add_executable(tf ${SOURCE_FILES})

README.md

@@ -52,7 +52,7 @@ DATA_CKSUM .. checksum, implemented as XOR of all preceding bytes in the message
 - Start by calling `TF_Init()` with `TF_MASTER` or `TF_SLAVE` as the argument
 - Implement `TF_WriteImpl()` - declared at the bottom of the header file as `extern`.
   This function is used by `TF_Send()` and others to write bytes to your UART (or other physical layer).
-  Presently, always a full frame is sent to this function.
+  A frame can be sent in it's entirety, or in multiple parts, depending on its size.
 - If you wish to use timeouts, periodically call `TF_Tick()`. The calling period determines 
   the length of 1 tick. This is used to time-out the parser in case it gets stuck 
   in a bad state (such as receiving a partial frame) and can also time-out ID listeners.
@@ -83,6 +83,6 @@ keep it, renew it's timeout, or let some other listener handle the message.
 You'll find various examples in the `demo/` folder. Each example has it's own Makefile,
 read it to see what options are available.
 
-The demos are written for Linux, using sockets and `clone()` for background processing.
+The demos are written for Linux, some using sockets and `clone()` for background processing.
 They try to simulate real TinyFrame behavior in an embedded system with asynchronous 
 Rx and Tx. If you can't run the demos, the source files are still good as examples.

TF_Config.example.h

@@ -47,10 +47,12 @@ typedef uint8_t TF_COUNT;
 
 //----------------------------- PARAMETERS ----------------------------------
 
-// Maximum send / receive payload size (static buffers size)
+// Maximum received payload size (static buffer)
 // Larger payloads will be rejected.
 #define TF_MAX_PAYLOAD_RX 1024
-#define TF_MAX_PAYLOAD_TX 1024
+// Size of the sending buffer. Larger payloads will be split to pieces and sent
+// in multiple calls to the write function. This can be lowered to reduce RAM usage.
+#define TF_SENDBUF_LEN 1024
 
 // --- Listener counts - determine sizes of the static slot tables ---
 

TinyFrame.c

@@ -11,6 +11,10 @@
 #define _TF_FN
 #endif
 
+// Helper macros
+#define TF_MAX(a, b) ((a)>(b)?(a):(b))
+#define TF_MIN(a, b) ((a)<(b)?(a):(b))
+
 enum TFState {
 	TFState_SOF = 0,      //!< Wait for SOF
 	TFState_LEN,          //!< Wait for Number Of Bytes
@@ -73,7 +77,7 @@ static struct TinyFrameStruct {
 	TF_COUNT count_generic_lst;
 
 	// Buffer for building frames
-	uint8_t sendbuf[TF_MAX_PAYLOAD_TX + TF_OVERHEAD_BYTES]; // TODO generate and send frames without a buffer
+	uint8_t sendbuf[TF_SENDBUF_LEN];
 } tf;
 
 //region Checksums
@@ -606,6 +610,18 @@ void _TF_FN TF_AcceptChar(unsigned char c)
 	}
 }
 
+// Helper macros for the Compose functions
+// use variables: si - signed int, b - byte, outbuf - target buffer, pos - count of bytes in buffer
+#define WRITENUM_BASE(type, num, xtra) \
+	for (si = sizeof(type)-1; si>=0; si--) { \
+		b = (uint8_t)((num) >> (si*8) & 0xFF); \
+		outbuff[pos++] = b; \
+		xtra; \
+	}
+#define _NOOP()
+#define WRITENUM(type, num)       WRITENUM_BASE(type, num, _NOOP())
+#define WRITENUM_CKSUM(type, num) WRITENUM_BASE(type, num, CKSUM_ADD(cksum, b))
+
 /**
  * Compose a frame (used internally by TF_Send and TF_Respond).
  * The frame can be sent using TF_WriteImpl(), or received by TF_Accept()
@@ -613,19 +629,16 @@ void _TF_FN TF_AcceptChar(unsigned char c)
  * @param outbuff - buffer to store the result in
  * @param msgid - message ID is stored here, if not NULL
  * @param type - message type
- * @param data - data buffer
  * @param len - payload size in bytes
  * @param explicit_id - ID to use in the frame (8-bit)
  * @param use_expl_id - whether to use the previous param
  * @return nr of bytes in outbuff used by the frame, 0 on failure
  */
-static inline size_t _TF_FN TF_Compose(uint8_t *outbuff, TF_ID *id_ptr,
+static inline size_t _TF_FN TF_ComposeHead(uint8_t *outbuff, TF_ID *id_ptr,
-			      TF_TYPE type,
+									   TF_TYPE type, TF_LEN data_len,
-				  const uint8_t *data, TF_LEN data_len,
 									   TF_ID explicit_id, bool use_expl_id)
 {
-	char si = 0; // signed small int
+	int8_t si = 0; // signed small int
-	TF_LEN i = 0;
 	uint8_t b = 0;
 	TF_ID id = 0;
 	TF_CKSUM cksum = 0;
@@ -635,11 +648,6 @@ static inline size_t _TF_FN TF_Compose(uint8_t *outbuff, TF_ID *id_ptr,
 
 	CKSUM_RESET(cksum);
 
-	// sanitize len
-	if (data_len > TF_MAX_PAYLOAD_TX) {
-		return 0;
-	}
-
 	// Gen ID
 	if (use_expl_id) {
 		id = explicit_id;
@@ -651,20 +659,7 @@ static inline size_t _TF_FN TF_Compose(uint8_t *outbuff, TF_ID *id_ptr,
 		}
 	}
 
-	if (id_ptr != NULL)
+	if (id_ptr != NULL) *id_ptr = id;
-		*id_ptr = id;
-
-	// DRY helper for writing a multi-byte variable to the buffer
-#define WRITENUM_BASE(type, num, xtra) \
-	for (si = sizeof(type)-1; si>=0; si--) { \
-		b = (uint8_t)(num >> (si*8) & 0xFF); \
-		outbuff[pos++] = b; \
-		xtra; \
-	}
-
-#define _NOOP()
-#define WRITENUM(type, num)       WRITENUM_BASE(type, num, _NOOP())
-#define WRITENUM_CKSUM(type, num) WRITENUM_BASE(type, num, CKSUM_ADD(cksum, b))
 
 	// --- Start ---
 	CKSUM_RESET(cksum);
@@ -683,30 +678,104 @@ static inline size_t _TF_FN TF_Compose(uint8_t *outbuff, TF_ID *id_ptr,
 	WRITENUM(TF_CKSUM, cksum);
 #endif
 
-	// --- payload begin ---
+	return pos;
-	if (data_len > 0) {
+}
-		CKSUM_RESET(cksum);
+
+/**
+ * Compose a frame (used internally by TF_Send and TF_Respond).
+ * The frame can be sent using TF_WriteImpl(), or received by TF_Accept()
+ *
+ * @param outbuff - buffer to store the result in
+ * @param data - data buffer
+ * @param data_len - data buffer len
+ * @param cksum - checksum variable, used for all calls to TF_ComposeBody. Must be reset before first use! (CKSUM_RESET(cksum);)
+ * @return nr of bytes in outbuff used
+ */
+static size_t _TF_FN TF_ComposeBody(uint8_t *outbuff, const uint8_t *data, TF_LEN data_len, TF_CKSUM *cksum)
+{
+	TF_LEN i = 0;
+	uint8_t b = 0;
+	size_t pos = 0;
 
-		// DATA
 	for (i = 0; i < data_len; i++) {
 		b = data[i];
 		outbuff[pos++] = b;
-			CKSUM_ADD(cksum, b);
+		CKSUM_ADD(*cksum, b);
-		}
-
-		#if TF_CKSUM_TYPE != TF_CKSUM_NONE
-			CKSUM_FINALIZE(cksum);
-			WRITENUM(TF_CKSUM, cksum);
-		#endif
 	}
 
 	return pos;
 }
 
+/**
+ * Finalize a frame
+ *
+ * @param outbuff - buffer to store the result in
+ * @param cksum - checksum variable used for the body
+ * @return nr of bytes in outbuff used
+ */
+static size_t _TF_FN TF_ComposeTail(uint8_t *outbuff, TF_CKSUM *cksum)
+{
+	int8_t si = 0; // signed small int
+	uint8_t b = 0;
+	size_t pos = 0;
+
+#if TF_CKSUM_TYPE != TF_CKSUM_NONE
+	CKSUM_FINALIZE(*cksum);
+	WRITENUM(TF_CKSUM, *cksum);
+#endif
+	return pos;
+}
+
+// send with listener
+static bool _TF_FN TF_SendFrame(TF_Msg *msg, TF_Listener listener, TF_TICKS timeout)
+{
+	size_t len = 0;
+	size_t remain = 0;
+	size_t sent = 0;
+	TF_CKSUM cksum = 0;
+
+	len = TF_ComposeHead(tf.sendbuf,
+					 &msg->frame_id,
+					 msg->type,
+					 msg->len,
+					 msg->frame_id,
+					 msg->is_response);
+
+	if (listener) TF_AddIdListener(msg, listener, timeout);
+
+	CKSUM_RESET(cksum);
+
+	remain = msg->len;
+	while (remain > 0) {
+		size_t chunk = TF_MIN(TF_SENDBUF_LEN - len, remain);
+		len += TF_ComposeBody(tf.sendbuf+len, msg->data+sent, (TF_LEN) chunk, &cksum);
+		remain -= chunk;
+		sent += chunk;
+
+		// Flush if the buffer is full and we have more to send
+		if (remain > 0 && len == TF_SENDBUF_LEN) {
+			TF_WriteImpl((const uint8_t *) tf.sendbuf, len);
+			len = 0;
+		}
+	}
+
+	// Flush if checksum wouldn't fit in the buffer
+	if (TF_SENDBUF_LEN - len < sizeof(TF_CKSUM)) {
+		TF_WriteImpl((const uint8_t *) tf.sendbuf, len);
+		len = 0;
+	}
+
+	// Add checksum, flush what remains to be sent
+	len += TF_ComposeTail(tf.sendbuf+len, &cksum);
+	TF_WriteImpl((const uint8_t *) tf.sendbuf, len);
+
+	return true;
+}
+
 // send without listener
 bool _TF_FN TF_Send(TF_Msg *msg)
 {
-	return TF_Query(msg, NULL, 0);
+	return TF_SendFrame(msg, NULL, 0);
 }
 
 // send without listener and struct
@@ -729,27 +798,13 @@ bool _TF_FN TF_QuerySimple(TF_TYPE type, const uint8_t *data, TF_LEN len, TF_Lis
 	msg.data = data;
 	msg.len = len;
 	msg.userdata = userdata;
-	return TF_Query(&msg, listener, timeout);
+	return TF_SendFrame(&msg, listener, timeout);
 }
 
 // send with listener
 bool _TF_FN TF_Query(TF_Msg *msg, TF_Listener listener, TF_TICKS timeout)
 {
-	size_t len;
+	return TF_SendFrame(msg, listener, timeout);
-	len = TF_Compose(tf.sendbuf,
-		             &msg->frame_id,
-		             msg->type,
-		             msg->data,
-		             msg->len,
-		             msg->frame_id,
-		             msg->is_response);
-
-	if (len == 0) return false;
-
-	if (listener) TF_AddIdListener(msg, listener, timeout);
-
-	TF_WriteImpl((const uint8_t *) tf.sendbuf, len);
-	return true;
 }
 
 // Like TF_Send, but with explicit frame ID

demo/multipart_tx/TF_Config.h

@@ -0,0 +1,25 @@
+//
+// Created by MightyPork on 2017/10/15.
+//
+
+#ifndef TF_CONFIG_H
+#define TF_CONFIG_H
+
+#include <stdint.h>
+
+#define TF_ID_BYTES     1
+#define TF_LEN_BYTES    2
+#define TF_TYPE_BYTES   1
+#define TF_CKSUM_TYPE TF_CKSUM_CRC16
+#define TF_USE_SOF_BYTE 1
+#define TF_SOF_BYTE     0x01
+typedef uint16_t TF_TICKS;
+typedef uint8_t TF_COUNT;
+#define TF_MAX_PAYLOAD_RX 10240
+#define TF_SENDBUF_LEN 64
+#define TF_MAX_ID_LST   10
+#define TF_MAX_TYPE_LST 10
+#define TF_MAX_GEN_LST  5
+#define TF_PARSER_TIMEOUT_TICKS 10
+
+#endif //TF_CONFIG_H

demo/multipart_tx/test.c

@@ -0,0 +1,297 @@
+#include <stdio.h>
+#include <string.h>
+#include "../../TinyFrame.h"
+#include "../utils.h"
+
+extern const char *romeo;
+
+/**
+ * This function should be defined in the application code.
+ * It implements the lowest layer - sending bytes to UART (or other)
+ */
+void TF_WriteImpl(const uint8_t *buff, size_t len)
+{
+	printf("--------------------\n");
+	printf("\033[32mTF_WriteImpl - sending frame:\033[0m\n");
+	dumpFrame(buff, len);
+
+	// Send it back as if we received it
+	TF_Accept(buff, len);
+}
+
+/** An example listener function */
+TF_Result myListener(TF_Msg *msg)
+{
+	dumpFrameInfo(msg);
+  if (strcmp(msg->data, romeo) == 0) {
+    printf("FILE TRANSFERRED OK!\r\n");
+  } else {
+    printf("FAIL!!!!\r\n");
+  }
+	return TF_STAY;
+}
+
+void main(void)
+{
+	TF_Msg msg;
+
+	// Set up the TinyFrame library
+	TF_Init(TF_MASTER); // 1 = master, 0 = slave
+	TF_AddGenericListener(myListener);
+
+	printf("------ Simulate sending a LOOONG message --------\n");
+
+	TF_ClearMsg(&msg);
+	msg.type = 0x22;
+	msg.data = (pu8)romeo;
+	msg.len = strlen(romeo);
+	TF_Send(&msg);
+}
+
+const char *romeo ="THE TRAGEDY OF ROMEO AND JULIET\n"
+"\n"
+"by William Shakespeare\n"
+"\n"
+"\n"
+"\n"
+"Dramatis Personae\n"
+"\n"
+"  Chorus.\n"
+"\n"
+"\n"
+"  Escalus, Prince of Verona.\n"
+"\n"
+"  Paris, a young Count, kinsman to the Prince.\n"
+"\n"
+"  Montague, heads of two houses at variance with each other.\n"
+"\n"
+"  Capulet, heads of two houses at variance with each other.\n"
+"\n"
+"  An old Man, of the Capulet family.\n"
+"\n"
+"  Romeo, son to Montague.\n"
+"\n"
+"  Tybalt, nephew to Lady Capulet.\n"
+"\n"
+"  Mercutio, kinsman to the Prince and friend to Romeo.\n"
+"\n"
+"  Benvolio, nephew to Montague, and friend to Romeo\n"
+"\n"
+"  Tybalt, nephew to Lady Capulet.\n"
+"\n"
+"  Friar Laurence, Franciscan.\n"
+"\n"
+"  Friar John, Franciscan.\n"
+"\n"
+"  Balthasar, servant to Romeo.\n"
+"\n"
+"  Abram, servant to Montague.\n"
+"\n"
+"  Sampson, servant to Capulet.\n"
+"\n"
+"  Gregory, servant to Capulet.\n"
+"\n"
+"  Peter, servant to Juliet's nurse.\n"
+"\n"
+"  An Apothecary.\n"
+"\n"
+"  Three Musicians.\n"
+"\n"
+"  An Officer.\n"
+"\n"
+"\n"
+"  Lady Montague, wife to Montague.\n"
+"\n"
+"  Lady Capulet, wife to Capulet.\n"
+"\n"
+"  Juliet, daughter to Capulet.\n"
+"\n"
+"  Nurse to Juliet.\n"
+"\n"
+"\n"
+"  Citizens of Verona; Gentlemen and Gentlewomen of both houses;\n"
+"    Maskers, Torchbearers, Pages, Guards, Watchmen, Servants, and\n"
+"    Attendants.\n"
+"\n"
+"                            SCENE.--Verona; Mantua.\n"
+"\n"
+"\n"
+"\n"
+"                        THE PROLOGUE\n"
+"\n"
+"                        Enter Chorus.\n"
+"\n"
+"\n"
+"  Chor. Two households, both alike in dignity,\n"
+"    In fair Verona, where we lay our scene,\n"
+"    From ancient grudge break to new mutiny,\n"
+"    Where civil blood makes civil hands unclean.\n"
+"    From forth the fatal loins of these two foes\n"
+"    A pair of star-cross'd lovers take their life;\n"
+"    Whose misadventur'd piteous overthrows\n"
+"    Doth with their death bury their parents' strife.\n"
+"    The fearful passage of their death-mark'd love,\n"
+"    And the continuance of their parents' rage,\n"
+"    Which, but their children's end, naught could remove,\n"
+"    Is now the two hours' traffic of our stage;\n"
+"    The which if you with patient ears attend,\n"
+"    What here shall miss, our toil shall strive to mend.\n"
+"                                                         [Exit.]\n"
+"\n"
+"\n"
+"\n"
+"\n"
+"ACT I. Scene I.\n"
+"Verona. A public place.\n"
+"\n"
+"Enter Sampson and Gregory (with swords and bucklers) of the house\n"
+"of Capulet.\n"
+"\n"
+"\n"
+"  Samp. Gregory, on my word, we'll not carry coals.\n"
+"\n"
+"  Greg. No, for then we should be colliers.\n"
+"\n"
+"  Samp. I mean, an we be in choler, we'll draw.\n"
+"\n"
+"  Greg. Ay, while you live, draw your neck out of collar.\n"
+"\n"
+"  Samp. I strike quickly, being moved.\n"
+"\n"
+"  Greg. But thou art not quickly moved to strike.\n"
+"\n"
+"  Samp. A dog of the house of Montague moves me.\n"
+"\n"
+"  Greg. To move is to stir, and to be valiant is to stand.\n"
+"    Therefore, if thou art moved, thou runn'st away.\n"
+"\n"
+"  Samp. A dog of that house shall move me to stand. I will take\n"
+"    the wall of any man or maid of Montague's.\n"
+"\n"
+"  Greg. That shows thee a weak slave; for the weakest goes to the\n"
+"    wall.\n"
+"\n"
+"  Samp. 'Tis true; and therefore women, being the weaker vessels,\n"
+"    are ever thrust to the wall. Therefore I will push Montague's men\n"
+"    from the wall and thrust his maids to the wall.\n"
+"\n"
+"  Greg. The quarrel is between our masters and us their men.\n"
+"\n"
+"  Samp. 'Tis all one. I will show myself a tyrant. When I have\n"
+"    fought with the men, I will be cruel with the maids- I will cut off\n"
+"    their heads.\n"
+"\n"
+"  Greg. The heads of the maids?\n"
+"\n"
+"  Samp. Ay, the heads of the maids, or their maidenheads.\n"
+"    Take it in what sense thou wilt.\n"
+"\n"
+"  Greg. They must take it in sense that feel it.\n"
+"\n"
+"  Samp. Me they shall feel while I am able to stand; and 'tis known I\n"
+"    am a pretty piece of flesh.\n"
+"\n"
+"  Greg. 'Tis well thou art not fish; if thou hadst, thou hadst\n"
+"    been poor-John. Draw thy tool! Here comes two of the house of\n"
+"    Montagues.\n"
+"\n"
+"           Enter two other Servingmen [Abram and Balthasar].\n"
+"\n"
+"\n"
+"  Samp. My naked weapon is out. Quarrel! I will back thee.\n"
+"\n"
+"  Greg. How? turn thy back and run?\n"
+"\n"
+"  Samp. Fear me not.\n"
+"\n"
+"  Greg. No, marry. I fear thee!\n"
+"\n"
+"  Samp. Let us take the law of our sides; let them begin.\n"
+"\n"
+"  Greg. I will frown as I pass by, and let them take it as they list.\n"
+"\n"
+"  Samp. Nay, as they dare. I will bite my thumb at them; which is\n"
+"    disgrace to them, if they bear it.\n"
+"\n"
+"  Abr. Do you bite your thumb at us, sir?\n"
+"\n"
+"  Samp. I do bite my thumb, sir.\n"
+"\n"
+"  Abr. Do you bite your thumb at us, sir?\n"
+"\n"
+"  Samp. [aside to Gregory] Is the law of our side if I say ay?\n"
+"\n"
+"  Greg. [aside to Sampson] No.\n"
+"\n"
+"  Samp. No, sir, I do not bite my thumb at you, sir; but I bite my\n"
+"    thumb, sir.\n"
+"\n"
+"  Greg. Do you quarrel, sir?\n"
+"\n"
+"  Abr. Quarrel, sir? No, sir.\n"
+"\n"
+"  Samp. But if you do, sir, am for you. I serve as good a man as\n"
+"    you.\n"
+"\n"
+"  Abr. No better.\n"
+"\n"
+"  Samp. Well, sir.\n"
+"\n"
+"                        Enter Benvolio.\n"
+"\n"
+"\n"
+"  Greg. [aside to Sampson] Say 'better.' Here comes one of my\n"
+"    master's kinsmen.\n"
+"\n"
+"  Samp. Yes, better, sir.\n"
+"\n"
+"  Abr. You lie.\n"
+"\n"
+"  Samp. Draw, if you be men. Gregory, remember thy swashing blow.\n"
+"                                                     They fight.\n"
+"\n"
+"  Ben. Part, fools! [Beats down their swords.]\n"
+"    Put up your swords. You know not what you do.\n"
+"\n"
+"                          Enter Tybalt.\n"
+"\n"
+"\n"
+"  Tyb. What, art thou drawn among these heartless hinds?\n"
+"    Turn thee Benvolio! look upon thy death.\n"
+"\n"
+"  Ben. I do but keep the peace. Put up thy sword,\n"
+"    Or manage it to part these men with me.\n"
+"\n"
+"  Tyb. What, drawn, and talk of peace? I hate the word\n"
+"    As I hate hell, all Montagues, and thee.\n"
+"    Have at thee, coward!                            They fight.\n"
+"\n"
+"     Enter an officer, and three or four Citizens with clubs or\n"
+"                          partisans.\n"
+"\n"
+"\n"
+"  Officer. Clubs, bills, and partisans! Strike! beat them down!\n"
+"\n"
+"  Citizens. Down with the Capulets! Down with the Montagues!\n"
+"\n"
+"           Enter Old Capulet in his gown, and his Wife.\n"
+"\n"
+"\n"
+"  Cap. What noise is this? Give me my long sword, ho!\n"
+"\n"
+"  Wife. A crutch, a crutch! Why call you for a sword?\n"
+"\n"
+"  Cap. My sword, I say! Old Montague is come\n"
+"    And flourishes his blade in spite of me.\n"
+"\n"
+"                 Enter Old Montague and his Wife.\n"
+"\n"
+"\n"
+"  Mon. Thou villain Capulet!- Hold me not, let me go.\n"
+"\n"
+"  M. Wife. Thou shalt not stir one foot to seek a foe.\n"
+"\n"
+"                Enter Prince Escalus, with his Train.\n"
+"\n"
+"\n"
+"END OF FILE\n";

demo/simple/Makefile

@@ -0,0 +1,11 @@
+CFILES=../utils.c ../../TinyFrame.c
+INCLDIRS=-I. -I.. -I../..
+CFLAGS=-O0 -ggdb --std=gnu99 -Wno-main -Wall -Wextra $(CFILES) $(INCLDIRS)
+
+run: test.bin
+	./test.bin
+
+build: test.bin
+
+test.bin: test.c $(CFILES)
+	gcc test.c $(CFLAGS) -o test.bin

demo/simple/TF_Config.h

@@ -16,7 +16,7 @@
 typedef uint16_t TF_TICKS;
 typedef uint8_t TF_COUNT;
 #define TF_MAX_PAYLOAD_RX 1024
-#define TF_MAX_PAYLOAD_TX 1024
+#define TF_SENDBUF_LEN 1024
 #define TF_MAX_ID_LST   10
 #define TF_MAX_TYPE_LST 10
 #define TF_MAX_GEN_LST  5

demo/socket_demo/TF_Config.h

@@ -16,7 +16,7 @@
 typedef uint16_t TF_TICKS;
 typedef uint8_t TF_COUNT;
 #define TF_MAX_PAYLOAD_RX 1024
-#define TF_MAX_PAYLOAD_TX 1024
+#define TF_SENDBUF_LEN 1024
 #define TF_MAX_ID_LST   10
 #define TF_MAX_TYPE_LST 10
 #define TF_MAX_GEN_LST  5