-flto

F0:F030,F042,F072/3steppersLB/Makefile

@@ -61,13 +61,12 @@ CFLAGS		+= -O2 -g -MD -D__thumb2__=1
 CFLAGS		+= -Wall -Werror -Wextra -Wshadow -Wimplicit-function-declaration
 CFLAGS		+= -Wredundant-decls $(INCLUDE)
 # -Wmissing-prototypes -Wstrict-prototypes
-CFLAGS		+= -fno-common -ffunction-sections -fdata-sections
+CFLAGS		+= -fno-common -ffunction-sections -fdata-sections -flto
 
 ###############################################################################
 # Linker flags
 LDFLAGS		+= --static -nostartfiles -nostdlib
-LDFLAGS		+= -Wl,--gc-sections -Wl,--print-memory-usage 
+LDFLAGS		+= -Wl,--gc-sections -Wl,--print-memory-usage --specs=nano.specs -flto
-#--specs=nano.specs
 LDFLAGS		+= -L$(LIB_DIR)
 LDFLAGS		+= -T$(LDSCRIPT)
 LDFLAGS		+= -Wl,-Map=$(OBJDIR)/$(BINARY).map

F0:F030,F042,F072/3steppersLB/version.inc

@@ -1,2 +1,2 @@
-#define BUILD_NUMBER "168"
+#define BUILD_NUMBER "169"
-#define BUILD_DATE "2022-06-17"
+#define BUILD_DATE "2023-01-11"

F0:F030,F042,F072/inc/startup/vector.c

@@ -795,7 +795,7 @@ typedef struct {
 
 extern unsigned _stack;
 
-vector_table_t vector_table __attribute__ ((section(".vector_table"))) = {
+vector_table_t vector_table __attribute__ ((used, section(".vector_table"))) = {
     .initial_sp_value = &_stack,
     .reset = reset_handler,
     .nmi = nmi_handler,
@@ -828,7 +828,7 @@ void WEAK __attribute__ ((naked)) __attribute__ ((noreturn)) reset_handler(void)
   char *src = &_ldata;
 
   // enable 8-byte stack alignment to comply with AAPCS
-  SCB->CCR |= 0x00000200;
+//  SCB->CCR |= 0x00000200;
 
   // copy initialized variables data
   while ( dst < &_edata ) { *dst++ = *src++; }

F1:F103/PL2303_ringbuffer/Makefile

@@ -68,7 +68,7 @@ CFLAGS		+=  $(ARCH_FLAGS)
 
 ###############################################################################
 # Linker flags
-LDFLAGS		+= -nostartfiles --static -nostdlibs --gc-sections --print-memory-usage
+LDFLAGS		+= -nostartfiles --static --gc-sections --print-memory-usage -specs=nano.specs 
 LDFLAGS		+= -L$(LIB_DIR) -L$(TOOLCHLIB)
 LDFLAGS		+= -T$(LDSCRIPT)
 

F1:F103/PL2303_ringbuffer/version.inc

@@ -1,2 +1,2 @@
-#define BUILD_NUMBER "71"
+#define BUILD_NUMBER "72"
-#define BUILD_DATE "2022-05-28"
+#define BUILD_DATE "2023-01-11"

F1:F103/inc/startup/vector.c

@@ -795,7 +795,7 @@ typedef struct {
 
 extern unsigned _stack;
 
-vector_table_t vector_table __attribute__ ((section(".vector_table"))) = {
+vector_table_t vector_table __attribute__ ((used, section(".vector_table"))) = {
     .initial_sp_value = &_stack,
     .reset = reset_handler,
     .nmi = nmi_handler,
@@ -828,7 +828,7 @@ void WEAK __attribute__ ((naked)) __attribute__ ((noreturn)) reset_handler(void)
   char *src = &_ldata;
 
   // enable 8-byte stack alignment to comply with AAPCS
-  SCB->CCR |= 0x00000200;
+//  SCB->CCR |= 0x00000200;
 
   // copy initialized variables data
   while ( dst < &_edata ) { *dst++ = *src++; }

F3:F303/floatPrintf/Makefile

@@ -60,7 +60,7 @@ LIB_DIR		:= $(INC_DIR)/ld
 CFLAGS		+= -g -gdwarf-2   # debuggin symbols in listing
 CFLAGS		+= -O2 -D__thumb2__=1 -MD
 CFLAGS		+= -Wall -Werror -Wextra -Wshadow 
-CFLAGS		+= -fshort-enums -ffunction-sections -fdata-sections
+CFLAGS		+= -fshort-enums -ffunction-sections -fdata-sections -flto
 #CFLAGS		+= -fno-common -ffunction-sections -fdata-sections -fno-stack-protector
 CFLAGS		+=  $(ARCH_FLAGS)
 
@@ -68,7 +68,7 @@ CFLAGS		+=  $(ARCH_FLAGS)
 # Linker flags
 #LDFLAGS		+= -nostartfiles --static -nostdlib  -specs=nosys.specs -specs=nano.specs
 LDFLAGS		+= $(ARCH_FLAGS)
-LDFLAGS		+= -specs=nano.specs -specs=nosys.specs
+LDFLAGS		+= -specs=nano.specs -flto
 LDFLAGS		+= -L$(LIB_DIR) 
 #-L$(TOOLCHLIB)
 LDFLAGS		+= -T$(LDSCRIPT)

F3:F303/inc/startup/vector.c

@@ -798,7 +798,7 @@ typedef struct {
 
 extern unsigned _stack;
 
-vector_table_t vector_table __attribute__ ((section(".vector_table"))) = {
+vector_table_t vector_table __attribute__ ((used, section(".vector_table"))) = {
     .initial_sp_value = &_stack,
     .reset = reset_handler,
     .nmi = nmi_handler,
@@ -831,7 +831,7 @@ void WEAK __attribute__ ((naked)) __attribute__ ((noreturn)) reset_handler(void)
   char *src = &_ldata;
 
   // enable 8-byte stack alignment to comply with AAPCS
-  SCB->CCR |= 0x00000200;
+//  SCB->CCR |= 0x00000200;
 
   /* FPU settings ------------------------------------------------------------*/
   #if (__FPU_PRESENT == 1)

F4:F401/blink/Makefile

@@ -70,7 +70,7 @@ LIB_DIR		:= $(INC_DIR)/ld
 CFLAGS		+= -g3 -gdwarf-2
 CFLAGS		+= -O2 -D__thumb2__=1 -MD
 CFLAGS		+= -Wall -Werror -Wextra -Wshadow 
-CFLAGS		+= -fshort-enums -ffunction-sections -fdata-sections
+CFLAGS		+= -fshort-enums -ffunction-sections -fdata-sections -flto
 #CFLAGS		+= -fno-common -ffunction-sections -fdata-sections -fno-stack-protector
 CFLAGS		+=  $(ARCH_FLAGS)
 
@@ -78,7 +78,7 @@ CFLAGS		+=  $(ARCH_FLAGS)
 # Linker flags
 #LDFLAGS		+= -nostartfiles --static -nostdlib  -specs=nosys.specs -specs=nano.specs
 LDFLAGS		+= $(ARCH_FLAGS)
-LDFLAGS		+= -specs=nosys.specs -specs=nano.specs
+LDFLAGS		+= -specs=nano.specs -flto
 LDFLAGS		+= -L$(LIB_DIR)
 #LDFLAGS		+= -L$(TOOLCHLIB)
 LDFLAGS		+= -T$(LDSCRIPT)

F4:F401/inc/startup/vector.c

@@ -798,7 +798,7 @@ typedef struct {
 
 extern unsigned _stack;
 
-vector_table_t vector_table __attribute__ ((section(".vector_table"))) = {
+vector_table_t vector_table __attribute__ ((used, section(".vector_table"))) = {
     .initial_sp_value = &_stack,
     .reset = reset_handler,
     .nmi = nmi_handler,

G0:G070/blink/Makefile

@@ -54,12 +54,11 @@ CFLAGS		+= -O2 -MD -D__thumb2__=1
 CFLAGS		+= -Wall -Werror -Wextra -Wshadow -Wimplicit-function-declaration
 CFLAGS		+= -Wredundant-decls $(INCLUDE)
 # -Wmissing-prototypes -Wstrict-prototypes
-CFLAGS		+= -fno-common -ffunction-sections -fdata-sections
+CFLAGS		+= -fno-common -ffunction-sections -fdata-sections -flto
 
 ###############################################################################
 # Linker flags
-LDFLAGS		+= --static -nostartfiles
+LDFLAGS		+= --static -nostartfiles --specs=nano.specs -flto
-#--specs=nano.specs
 LDFLAGS		+= -L$(LIB_DIR)
 LDFLAGS		+= -T$(LDSCRIPT)
 LDFLAGS		+= -Wl,-Map=$(OBJDIR)/$(BINARY).map
@@ -127,7 +126,7 @@ clean:
 	@rmdir $(OBJDIR) 2>/dev/null || true
 
 size: $(ELF)
-	$(SIZE) $(ELF)
+	$(SIZE) -Ax $(ELF)
 
 flash: $(BIN)
 	@echo "  FLASH  $(BIN)"

G0:G070/i2c/Makefile

@@ -64,11 +64,11 @@ CFLAGS		+= -O2 -MD -D__thumb2__=1
 CFLAGS		+= -Wall -Werror -Wextra -Wshadow -Wimplicit-function-declaration
 CFLAGS		+= -Wredundant-decls $(INCLUDE)
 # -Wmissing-prototypes -Wstrict-prototypes
-CFLAGS		+= -fno-common -ffunction-sections -fdata-sections 
+CFLAGS		+= -fno-common -ffunction-sections -fdata-sections -flto
 
 ###############################################################################
 # Linker flags
-LDFLAGS		+= --static -nostartfiles --specs=nano.specs 
+LDFLAGS		+= --static -nostartfiles --specs=nano.specs -flto
 LDFLAGS		+= -L$(LIB_DIR)
 LDFLAGS		+= -T$(LDSCRIPT)
 LDFLAGS		+= -Wl,-Map=$(OBJDIR)/$(BINARY).map

G0:G070/i2c/i2c.c

@@ -17,7 +17,8 @@
  */
 
 #include <stm32g0.h>
-#include "strfunc.h" // mymemcpy
+#include <string.h>
+#include "strfunc.h" // hexdump
 #include "usart.h"
 #include "i2c.h"
 
@@ -166,7 +167,7 @@ uint8_t write_i2c(uint8_t addr, uint8_t *data, uint8_t nbytes){
 
 uint8_t write_i2c_dma(uint8_t addr, uint8_t *data, uint8_t nbytes){
     if(!data || nbytes < 1) return 0;
-    mymemcpy((char*)I2Cbuf, (char*)data, nbytes);
+    memcpy((char*)I2Cbuf, (char*)data, nbytes);
     if(isI2Cbusy()) return 0;
     i2cDMAsetup(1, nbytes);
     goterr = 0;

G0:G070/i2c/proto.c

@@ -17,6 +17,7 @@
  */
 
 #include <stm32g0.h>
+#include <string.h>
 #include "i2c.h"
 #include "strfunc.h"
 #include "usart.h"
@@ -24,6 +25,7 @@
 #define LOCBUFFSZ       (32)
 // local buffer for I2C data to send
 static uint8_t locBuffer[LOCBUFFSZ];
+extern volatile uint32_t Tms;
 
 const char *helpstring =
         "i0..2 - setup I2C with lowest..highest speed (7.7, 10 and 100kHz)\n"
@@ -36,6 +38,7 @@ const char *helpstring =
         "In n - just read n bytes\n"
         "IN n - the same but with DMA\n"
         "Is - scan I2C bus\n"
+        "T - print current Tms\n"
         "U - send long buffer over USART\n"
 ;
 
@@ -167,6 +170,11 @@ char *parse_cmd(char *buf){
     // "short" commands
     if(buf[1]) return buf; // echo wrong data
     switch(*buf){
+        case 'T':
+            usart3_sendstr("T=");
+            usart3_sendstr(u2str(Tms));
+            usart3_send("\n", 1);
+        break;
         case 'U':
             U3sendlong(longbuff);
         break;

G0:G070/i2c/strfunc.c

@@ -247,7 +247,9 @@ char *getnum(const char *txt, uint32_t *N){
     return nxt;
 }
 
+/*
 void mymemcpy(char *dest, const char *src, int len){
     if(len < 1) return;
     while(len--) *dest++ = *src++;
 }
+*/

G0:G070/i2c/usart.c

@@ -19,7 +19,6 @@
 #include <stm32g0.h>
 #include <string.h>
 
-#include "strfunc.h" // mymemcpy
 #include "usart.h"
 
 // RX/TX DMA->CCR without EN flag
@@ -84,7 +83,7 @@ int usart3_send(const char *str, int len){
     int rest = UARTBUFSZ - txlen[tbufno];
     if(rest == 0 && !u3txrdy) return 0; // buffer is full while transmission in process
     if(len < rest) rest = len;
-    mymemcpy((char*)(tbuf[tbufno] + txlen[tbufno]), str, rest);
+    memcpy((char*)(tbuf[tbufno] + txlen[tbufno]), str, rest);
     txlen[tbufno] += rest;
     if(!u3txrdy) return rest;
     if(txlen[tbufno] == UARTBUFSZ) usart3_sendbuf();
@@ -92,7 +91,7 @@ int usart3_send(const char *str, int len){
     len -= rest;
     // now fill another - empty - buffer
     if(len > UARTBUFSZ) len = UARTBUFSZ;
-    mymemcpy((char*)tbuf[tbufno], str + rest, len);
+    memcpy((char*)tbuf[tbufno], str + rest, len);
     txlen[tbufno] = len;
     return rest + len;
 }

G0:G070/inc/startup/vector.c

@@ -88,7 +88,7 @@ typedef struct {
 
 extern unsigned _stack;
 
-vector_table_t vector_table __attribute__ ((section(".vector_table"))) = {
+vector_table_t vector_table __attribute__ ((used, section(".vector_table"))) = {
     .initial_sp_value = &_stack,
     .reset = reset_handler,
     .nmi = nmi_handler,

G0:G070/usart/Makefile

@@ -64,12 +64,11 @@ CFLAGS		+= -O2 -MD -D__thumb2__=1
 CFLAGS		+= -Wall -Werror -Wextra -Wshadow -Wimplicit-function-declaration
 CFLAGS		+= -Wredundant-decls $(INCLUDE)
 # -Wmissing-prototypes -Wstrict-prototypes
-CFLAGS		+= -fno-common -ffunction-sections -fdata-sections
+CFLAGS		+= -fno-common -ffunction-sections -fdata-sections -flto
 
 ###############################################################################
 # Linker flags
-LDFLAGS		+= --static -nostartfiles
+LDFLAGS		+= --static -nostartfiles --specs=nano.specs -flto
-#--specs=nano.specs
 LDFLAGS		+= -L$(LIB_DIR)
 LDFLAGS		+= -T$(LDSCRIPT)
 LDFLAGS		+= -Wl,-Map=$(OBJDIR)/$(BINARY).map
@@ -146,7 +145,7 @@ clean:
 	@rmdir $(OBJDIR) 2>/dev/null || true
 
 size: $(ELF)
-	$(SIZE) $(ELF)
+	$(SIZE) -Ax $(ELF)
 
 flash: $(BIN)
 	@echo "  FLASH  $(BIN)"

G0:G070/usart/usart.c

@@ -25,18 +25,18 @@
 #define DMARXCCR    (DMA_CCR_MINC | DMA_CCR_TCIE | DMA_CCR_TEIE)
 #define DMATXCCR    (DMA_CCR_MINC | DMA_CCR_DIR | DMA_CCR_TCIE | DMA_CCR_TEIE)
 
-static int txrdy = 1, rxrdy = 0; // transmission done, next line received
+static volatile int txrdy = 1, rxrdy = 0; // transmission done, next line received
-static int bufovr = 0, wasbufovr = 0; // Rx buffer overflow or error flag -> delete next line
+static volatile int bufovr = 0, wasbufovr = 0; // Rx buffer overflow or error flag -> delete next line
-static int rbufno = 0, tbufno = 0; // current buf number
+static volatile int rbufno = 0, tbufno = 0; // current buf number
-static char rbuf[2][UARTBUFSZ], tbuf[2][UARTBUFSZ]; // receive & transmit buffers
+static volatile char rbuf[2][UARTBUFSZ], tbuf[2][UARTBUFSZ]; // receive & transmit buffers
-static int rxlen[2] = {0}, txlen[2] = {0};
+static volatile int rxlen[2] = {0}, txlen[2] = {0};
 
 char *usart3_getline(int *wasbo){
     if(wasbo) *wasbo = wasbufovr;
     wasbufovr = 0;
     if(!rxrdy) return NULL;
     rxrdy = 0; // clear ready flag
-    return rbuf[!rbufno]; // current buffer is in filling stage, return old - filled - buffer
+    return (char*)rbuf[!rbufno]; // current buffer is in filling stage, return old - filled - buffer
 }
 
 #define USART_BRR(speed)    ((64000000 + speed/2) / speed)
@@ -87,7 +87,7 @@ int usart3_send(const char *str, int len){
     int rest = UARTBUFSZ - txlen[tbufno];
     if(rest == 0 && !txrdy) return 0; // buffer is full while transmission in process
     if(len < rest) rest = len;
-    mymemcpy(tbuf[tbufno] + txlen[tbufno], str, rest);
+    mymemcpy((char*)(tbuf[tbufno] + txlen[tbufno]), str, rest);
     txlen[tbufno] += rest;
     if(!txrdy) return rest;
     if(txlen[tbufno] == UARTBUFSZ) usart3_sendbuf();
@@ -95,7 +95,7 @@ int usart3_send(const char *str, int len){
     len -= rest;
     // now fill another - empty - buffer
     if(len > UARTBUFSZ) len = UARTBUFSZ;
-    mymemcpy(tbuf[tbufno], str + rest, len);
+    mymemcpy((char*)tbuf[tbufno], str + rest, len);
     txlen[tbufno] = len;
     return rest + len;
 }

TODO

@@ -0,0 +1 @@
+add -flto