diff --git a/STM32/TSYS_controller/Makefile b/STM32/TSYS_controller/Makefile
index 72e4685..0701667 100644
--- a/STM32/TSYS_controller/Makefile
+++ b/STM32/TSYS_controller/Makefile
@@ -13,6 +13,11 @@ DEFS		:= -DUSARTNUM=1 -DI2CPINS=67
 # for example, if you have STM32F103VBT6, you should write:
 LDSCRIPT	= stm32f042x6.ld
 
+# autoincremental version & build date
+VERSION_FILE := version.inc
+NEXTVER := $(shell expr $$(awk '/#define BUILD_NUMBER/' $(VERSION_FILE) | tr -cd "[0-9]") + 1)
+BUILDDATE := $(shell date +%Y-%m-%d)
+
 INDEPENDENT_HEADERS=
 
 FP_FLAGS	?= -msoft-float
@@ -56,7 +61,7 @@ LIB_DIR		:= $(INC_DIR)/ld
 ###############################################################################
 # C flags
 CFLAGS		+= -O2 -g -D__thumb2__=1
-CFLAGS		+= -Wall -Wextra -Wshadow -Wimplicit-function-declaration
+CFLAGS		+= -Wall -Werror -Wextra -Wshadow -Wimplicit-function-declaration
 CFLAGS		+= -Wredundant-decls $(INCLUDE)
 # -Wmissing-prototypes -Wstrict-prototypes
 CFLAGS		+= -fno-common -ffunction-sections -fdata-sections
@@ -72,8 +77,8 @@ LDFLAGS		+= -Wl,--gc-sections
 
 ###############################################################################
 # Used libraries
-LDLIBS		+= -Wl,--start-group -lc -lgcc -Wl,--end-group
-LDLIBS		+= $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
+#LDLIBS		+= -Wl,--start-group -lc -lgcc -Wl,--end-group
+#LDLIBS		+= $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
 
 DEFS		+= -DSTM32$(FAMILY) -DSTM32$(MCU)
 
@@ -103,8 +108,16 @@ $(OBJDIR):
 $(STARTUP): $(INC_DIR)/startup/vector.c
 	$(CC) $(CFLAGS) $(DEFS) $(INCLUDE) $(ARCH_FLAGS) -o $@ -c $<
 
+$(VERSION_FILE): *.[ch]
+	@echo "  Generate version: $(NEXTVER) for date $(BUILDDATE)"
+	@sed -i "s/#define BUILD_NUMBER.*/#define BUILD_NUMBER \"$(NEXTVER)\"/" $(VERSION_FILE)
+	@sed -i "s/#define BUILD_DATE.*/#define BUILD_DATE \"$(BUILDDATE)\"/" $(VERSION_FILE)
+
+$(OBJDIR)/proto.o: proto.c $(VERSION_FILE)
+
 $(OBJDIR)/%.o: %.c
-	@echo "  CC      $<"
+	@make $(VERSION_FILE)
+	@echo "  CC	  $<"
 	$(CC) $(CFLAGS) -MD $(DEFS) $(INCLUDE) $(ARCH_FLAGS) -o $@ -c $<
 
 $(BIN): $(ELF)
@@ -120,7 +133,7 @@ $(LIST): $(ELF)
 	$(OBJDUMP) -S $(ELF) > $(LIST)
 
 $(ELF): $(OBJDIR) $(OBJS)
-	@echo "  LD      $(ELF)"
+	@echo "  LD	  $(ELF)"
 	$(LD) $(LDFLAGS) $(ARCH_FLAGS) $(OBJS) $(LDLIBS) -o $(ELF)
 	@size $(ELF)
 
@@ -141,7 +154,4 @@ boot: $(BIN)
 	@echo "  LOAD $(BIN) through bootloader"
 	$(STBOOT) -b$(BOOTSPEED) $(BOOTPORT) -w $(BIN)
 
-gentags:
-	CFLAGS="$(CFLAGS) $(DEFS)" geany -g $(BINARY).c.tags *[hc] 2>/dev/null
-
-.PHONY: clean flash boot dfuboot gentags
+.PHONY: clean flash boot dfuboot
diff --git a/STM32/TSYS_controller/Readme.md b/STM32/TSYS_controller/Readme.md
index cf659f9..0feff0f 100644
--- a/STM32/TSYS_controller/Readme.md
+++ b/STM32/TSYS_controller/Readme.md
@@ -89,16 +89,16 @@ First (number zero) byte of every sequence is command mark (0xA5) or data mark (
 
 ### Sensors state data format
 - byte 3 - Sstate value:
-- -   `[SENS_INITING]`       = "init"
-- -   `[SENS_RESETING]`      = "reset"
-- -   `[SENS_GET_COEFFS]`    = "getcoeff"
-- -   `[SENS_SLEEPING]`      = "sleep"
-- -   `[SENS_START_MSRMNT]`  = "startmeasure"
-- -   `[SENS_WAITING]`       = "waitresults"
-- -   `[SENS_GATHERING]`     = "collectdata"
-- -   `[SENS_OFF]`           = "off"
-- -   `[SENS_OVERCURNT]`     = "overcurrent"
-- -   `[SENS_OVERCURNT_OFF]` = "offbyovercurrent"
+  -   `[SENS_INITING]`       = "init"
+  -   `[SENS_RESETING]`      = "reset"
+  -   `[SENS_GET_COEFFS]`    = "getcoeff"
+  -   `[SENS_SLEEPING]`      = "sleep"
+  -   `[SENS_START_MSRMNT]`  = "startmeasure"
+  -   `[SENS_WAITING]`       = "waitresults"
+  -   `[SENS_GATHERING]`     = "collectdata"
+  -   `[SENS_OFF]`           = "off"
+  -   `[SENS_OVERCURNT]`     = "overcurrent"
+  -   `[SENS_OVERCURNT_OFF]` = "offbyovercurrent"
 - byte 4 - `sens_present[0]` value
 - byte 5 - `sens_present[1]` value
 - byte 6 - `Nsens_present` value
diff --git a/STM32/TSYS_controller/can.c b/STM32/TSYS_controller/can.c
index b638715..561c367 100644
--- a/STM32/TSYS_controller/can.c
+++ b/STM32/TSYS_controller/can.c
@@ -20,11 +20,14 @@
  * MA 02110-1301, USA.
  *
  */
+
 #include <string.h> // memcpy
+
 #include "can.h"
 #include "hardware.h"
 #include "proto.h"
 
+
 // incoming message buffer size
 #define CAN_INMESSAGE_SIZE  (6)
 
@@ -237,7 +240,7 @@ static void can_process_fifo(uint8_t fifo_num){
             uint32_t *dptr = (uint32_t*)msg.data;
             dptr[0] = dptr[1] = 0;
         }
-        uint8_t len = box->RDTR & 0x7;
+        uint8_t len = box->RDTR & 0x0f;
         msg.length = len;
         msg.ID = box->RIR >> 21;
         if(len){ // message can be without data
diff --git a/STM32/TSYS_controller/can_process.c b/STM32/TSYS_controller/can_process.c
index f9bea8a..e6aa695 100644
--- a/STM32/TSYS_controller/can_process.c
+++ b/STM32/TSYS_controller/can_process.c
@@ -100,7 +100,7 @@ void can_messages_proc(){
         newline(); sendbuf();
     }
     // don't process alien messages
-    if(can_mesg->ID != CANID || can_mesg->ID != BCAST_ID) return;
+    if(can_mesg->ID != CANID && can_mesg->ID != BCAST_ID) return;
     int16_t t;
     if(data[0] == COMMAND_MARK){   // process commands
         if(len < 2) return;
diff --git a/STM32/TSYS_controller/main.c b/STM32/TSYS_controller/main.c
index 8f745d0..affe161 100644
--- a/STM32/TSYS_controller/main.c
+++ b/STM32/TSYS_controller/main.c
@@ -75,23 +75,11 @@ int main(void){
     adc_setup();
     usart_setup();
     i2c_setup(LOW_SPEED);
-    CAN_setup(0); // setup with default 250kbaud
-/*
-    SEND("Greetings! My address is ");
-    printuhex(CANID);
-    newline();
-
-    if(RCC->CSR & RCC_CSR_IWDGRSTF){ // watchdog reset occured
-        SEND("WDGRESET=1\n");
-    }
-    if(RCC->CSR & RCC_CSR_SFTRSTF){ // software reset occured
-        SEND("SOFTRESET=1\n");
-    }
-    */
-    RCC->CSR |= RCC_CSR_RMVF; // remove reset flags
-    USB_setup();
     readCANID();
     if(CANID == MASTER_ID) cansniffer = 1; // MASTER in sniffer mode by default
+    CAN_setup(0); // setup with default 250kbaud
+    RCC->CSR |= RCC_CSR_RMVF; // remove reset flags
+    USB_setup();
     iwdg_setup();
 
     while (1){
diff --git a/STM32/TSYS_controller/proto.c b/STM32/TSYS_controller/proto.c
index f84bf55..716d530 100644
--- a/STM32/TSYS_controller/proto.c
+++ b/STM32/TSYS_controller/proto.c
@@ -20,6 +20,9 @@
  * MA 02110-1301, USA.
  *
  */
+
+#include <string.h>
+
 #include "adc.h"
 #include "can.h"
 #include "can_process.h"
@@ -28,7 +31,7 @@
 #include "sensors_manage.h"
 #include "usart.h"
 #include "usb.h"
-#include <string.h> // strlen, strcpy(
+#include "version.inc"
 
 extern volatile uint8_t canerror;
 
@@ -347,6 +350,7 @@ void cmd_parser(char *txt, uint8_t isUSB){
             newline();
         break;
         default: // help
+            SEND("https://github.com/eddyem/tsys01/tree/master/STM32/TSYS_controller build#" BUILD_NUMBER " @ " BUILD_DATE "\n");
             SEND(
             "ALL little letters - without CAN messaging\n"
             "0..7 - send command to given controller (0 - this) instead of broadcast\n"
@@ -388,8 +392,9 @@ void printu(uint32_t val){
         *(--bufptr) = '0';
     }else{
         while(val){
-            *(--bufptr) = val % 10 + '0';
+            register uint32_t o = val;
             val /= 10;
+            *(--bufptr) = (o - 10*val) + '0';
         }
     }
     addtobuf(bufptr);
@@ -399,8 +404,13 @@ void printu(uint32_t val){
 void printuhex(uint32_t val){
     addtobuf("0x");
     uint8_t *ptr = (uint8_t*)&val + 3;
-    int i, j;
+    int i, j, z = 1;
     for(i = 0; i < 4; ++i, --ptr){
+        if(*ptr == 0){ // omit leading zeros
+            if(i == 3) z = 0;
+            if(z) continue;
+        }
+        else z = 0;
         for(j = 1; j > -1; --j){
             uint8_t half = (*ptr >> (4*j)) & 0x0f;
             if(half < 10) bufputchar(half + '0');
diff --git a/STM32/TSYS_controller/sensors_manage.c b/STM32/TSYS_controller/sensors_manage.c
index 6ba2656..63e485f 100644
--- a/STM32/TSYS_controller/sensors_manage.c
+++ b/STM32/TSYS_controller/sensors_manage.c
@@ -23,7 +23,7 @@
 #include "sensors_manage.h"
 #include "can_process.h"
 #include "i2c.h"
-#include "proto.h" // addtobuf, bufputchar
+#include "proto.h" // addtobuf, bufputchar, memcpy
 
 extern volatile uint32_t Tms;
 uint8_t sensors_scan_mode = 0; // infinite scan mode
@@ -61,6 +61,7 @@ const char *sensors_get_statename(SensorsState x){
     return statenames[x];
 }
 
+const double mul[5] = {-1.5e-2, 1., -2., 4., -2.};
 /**
  * Get temperature & calculate it by polinome
  * T =    (-2) * k4 * 10^{-21} * ADC16^4
@@ -81,7 +82,6 @@ static uint16_t calc_t(uint32_t t, int i){
     int j;
     double d = (double)t/256., tmp = 0.;
     // k0*(-1.5e-2) + 0.1*1e-5*val*(1*k1 + 1e-5*val*(-2.*k2 + 1e-5*val*(4*k3 + 1e-5*val*(-2*k4))))
-    const double mul[5] = {-1.5e-2, 1., -2., 4., -2.};
     for(j = 4; j > 0; --j){
         tmp += mul[j] * (double)coeff[j];
         tmp *= 1e-5*d;
diff --git a/STM32/TSYS_controller/tsys01.bin b/STM32/TSYS_controller/tsys01.bin
index d11a383..b5e88b7 100755
Binary files a/STM32/TSYS_controller/tsys01.bin and b/STM32/TSYS_controller/tsys01.bin differ
diff --git a/STM32/TSYS_controller/usart.c b/STM32/TSYS_controller/usart.c
index b79aa84..d1ccc0b 100644
--- a/STM32/TSYS_controller/usart.c
+++ b/STM32/TSYS_controller/usart.c
@@ -18,10 +18,13 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  * MA 02110-1301, USA.
  */
+
+#include <string.h>
+
 #include "stm32f0.h"
 #include "hardware.h"
 #include "usart.h"
-#include <string.h>
+
 
 extern volatile uint32_t Tms;
 static int datalen[2] = {0,0}; // received data line length (including '\n')
diff --git a/STM32/TSYS_controller/usb.c b/STM32/TSYS_controller/usb.c
index f7aeb4c..03cd614 100644
--- a/STM32/TSYS_controller/usb.c
+++ b/STM32/TSYS_controller/usb.c
@@ -21,10 +21,11 @@
  *
  */
 
+#include <string.h>
+
+#include "usart.h"
 #include "usb.h"
 #include "usb_lib.h"
-#include <string.h> // memcpy, memmove
-#include "usart.h"
 
 // incoming buffer size
 #define IDATASZ     (256)
diff --git a/STM32/TSYS_controller/usb_lib.c b/STM32/TSYS_controller/usb_lib.c
index 3b1e3e8..4b1cbcb 100644
--- a/STM32/TSYS_controller/usb_lib.c
+++ b/STM32/TSYS_controller/usb_lib.c
@@ -20,11 +20,13 @@
  * MA 02110-1301, USA.
  *
  */
-#include "proto.h"
+
+#include <string.h> // memcpy
+
+#include "stm32f0.h"
 #include "usart.h"
 #include "usb_lib.h"
-#include <stdint.h>
-#include <string.h> // memcpy
+
 
 #ifdef EBUG
 #undef EBUG
@@ -146,17 +148,17 @@ _USB_STRING_(USB_StringProdDescriptor, u"USB-Serial Controller");
  */
 // SET_LINE_CODING
 void WEAK linecoding_handler(usb_LineCoding __attribute__((unused)) *lc){
-    MSG("linecoding_handler\n");
+    //MSG("linecoding_handler\n");
 }
 
 // SET_CONTROL_LINE_STATE
 void WEAK clstate_handler(uint16_t __attribute__((unused)) val){
-    MSG("clstate_handler\n");
+    //MSG("clstate_handler\n");
 }
 
 // SEND_BREAK
 void WEAK break_handler(){
-    MSG("break_handler\n");
+    //MSG("break_handler\n");
 }
 
 // handler of vendor requests
diff --git a/STM32/TSYS_controller/version.inc b/STM32/TSYS_controller/version.inc
new file mode 100644
index 0000000..a6bd452
--- /dev/null
+++ b/STM32/TSYS_controller/version.inc
@@ -0,0 +1,2 @@
+#define BUILD_NUMBER "28"
+#define BUILD_DATE "2022-01-31"