From 9cc1f6571b3fa961a45ef7320b66e12524fc09de Mon Sep 17 00:00:00 2001
From: Pavel Vymetálek <pavel@vym.cz>
Date: Mon, 6 Apr 2020 10:38:31 +0200
Subject: Fixed sending and progressbar for files smaller than 256 bytes

---
 CHANGELOG |  4 +++-
 TODO      |  6 ++++--
 sercp.c   | 15 ++++++++++-----
 3 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/CHANGELOG b/CHANGELOG
index 2c3b436..c77fc6e 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,7 @@
+2020-04-06	v0.3.3 fixed progressbar for files smaller than 256 bytes
+2020-04-05	v0.3.2 changes for __APPLE__ and BSD - still not work on aplle :(
 2020-04-03	v0.3.1 fixed complicated interrupting by ctrl-c
 2019-03-26	v0.3.0 add support for time/date handling
 2019-03-16	v0.2.3 fixed serial port setup to work on Mac
 2019-03-09	v0.2.2 remove unnecessary waiting after last block
-2019-03-02	versions before this date was unreleased
\ No newline at end of file
+2019-03-02	versions before this date was unreleased
diff --git a/TODO b/TODO
index 0927f36..f8ac68e 100644
--- a/TODO
+++ b/TODO
@@ -1,8 +1,10 @@
+2020-04-05
+	+ for short files < 256 bytes does not work the progressbar - underflow counter
+	- listing of enumerated serial ports - linux, win, mac
 2020-04-04
 	- add test serial line - show CTS, RTS lines state
 2019-09-03
-	- fix progressbar for files smaller than 16kB
-
+	+ fix progressbar for files smaller than 16kB
 
 2019-03-16
     + add support for handling time/date of files
diff --git a/sercp.c b/sercp.c
index 07054f4..a044639 100644
--- a/sercp.c
+++ b/sercp.c
@@ -65,7 +65,7 @@
 #define FALSE 0
 #define true 1
 #define TRUE 1
-const char* _version = "v0.3.2";
+const char* _version = "v0.3.3";
 // SERIAL
 FILE *tapout_fd = NULL;
 int is_outfile = 0;
@@ -515,7 +515,7 @@ void sercpSend(void) {
 	uint8_t num_blocks = 0;
 	ssize_t odeslano;
 	uint32_t len_sent;
-	uint16_t sent_size;
+	uint16_t send_size;
 	uint32_t overall_sent;
 #ifdef _WIN32
 	unsigned long ulNumBytes;
@@ -595,14 +595,18 @@ void sercpSend(void) {
 	while (file_len) {
 		len = fread(buff, 1, 16384, tap_fd);			// read 16kiB from file
 		p_buff = buff;
-		sent_size = 256;
+		if (len > 256) {
+			send_size = 256;
+		} else {
+			send_size = len;
+		}
 		len_sent = len;
 		while (len_sent) {
 #ifdef _WIN32
 			WriteFile(serial_fd, (void*)p_buff, sent_size, &ulNumBytes, NULL);
 			odeslano = (size_t)ulNumBytes;
 #else
-			odeslano = write (serial_fd, (void*)p_buff, sent_size);
+			odeslano = write (serial_fd, (void*)p_buff, send_size);
 			if (tcdrain(serial_fd) == -1) {
 				perror("tcdrain err2: ");
 				return;
@@ -612,7 +616,7 @@ void sercpSend(void) {
 			overall_sent += odeslano;
 			len_sent -= odeslano;
 			if (len_sent < 256) {
-				sent_size = len_sent;
+				send_size = len_sent;
 			}
 			DoProgress(overall_sent, st.st_size, PROGRESS_PERCENT);
 		}
@@ -708,6 +712,7 @@ int OpenUart() {
 	cfmakeraw(&newtio);
 	cfsetspeed(&newtio, baud_rate);
 #if defined (__APPLE__) || defined (BSD)
+	// pro jabkace | CNEW_RTSCTS
 	newtio.c_cflag = CS8 | CLOCAL | CREAD | CCTS_OFLOW | CRTS_IFLOW;		// CSTOPB - two stop bits NOT
 #else
 	newtio.c_cflag = CS8 | CLOCAL | CREAD | CRTSCTS;
-- 
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