eddy/stm32samples
1
0
Fork 0
mirror of https://github.com/eddyem/stm32samples.git synced 2026-02-28 03:44:30 +03:00
Code Issues Packages Projects Releases Wiki Activity

-flto

Browse Source
This commit is contained in:
Edward Emelianov
2023-01-11 21:19:18 +03:00
parent a5e420ac51
commit e98aa11f72
29 changed files with 54 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
G0:G070/usart/Makefile
View File

@@ -64,12 +64,11 @@ CFLAGS += -O2 -MD -D__thumb2__=1
CFLAGS += -Wall -Werror -Wextra -Wshadow -Wimplicit-function-declaration
CFLAGS += -Wredundant-decls $(INCLUDE)
# -Wmissing-prototypes -Wstrict-prototypes
CFLAGS += -fno-common -ffunction-sections -fdata-sections
CFLAGS += -fno-common -ffunction-sections -fdata-sections -flto
###############################################################################
# Linker flags
LDFLAGS += --static -nostartfiles
#--specs=nano.specs
LDFLAGS += --static -nostartfiles --specs=nano.specs -flto
LDFLAGS += -L$(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)"

BIN
G0:G070/usart/usart.bin
View File

Binary file not shown.

16
G0:G070/usart/usart.c
View File

@@ -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 int bufovr = 0, wasbufovr = 0; // Rx buffer overflow or error flag -> delete next line
static int rbufno = 0, tbufno = 0; // current buf number
static char rbuf[2][UARTBUFSZ], tbuf[2][UARTBUFSZ]; // receive & transmit buffers
static int rxlen[2] = {0}, txlen[2] = {0};
static volatile int txrdy = 1, rxrdy = 0; // transmission done, next line received
static volatile int bufovr = 0, wasbufovr = 0; // Rx buffer overflow or error flag -> delete next line
static volatile int rbufno = 0, tbufno = 0; // current buf number
static volatile char rbuf[2][UARTBUFSZ], tbuf[2][UARTBUFSZ]; // receive & transmit buffers
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;
}