| /programy/Atmel_C/RS232toRS485/P232.c |
|---|
| 1,5 → 1,5 |
| //---------------------------------------------------------------------------------- |
| // Prevodnik RS232 <--> RS485 s prodlevou pri prevodu smerem do RS485 |
| // Prevodnik RS232 <--> RS485 |
| // pri startbitu na RS232 zapne okamzite vysilac pokud nejsou detekovana data z RS485. |
| //---------------------------------------------------------------------------------- |
| 10,20 → 10,10 |
| #include <avr/eeprom.h> |
| #include <avr/pgmspace.h> |
| #define POVOLOVAK_LOW PORTB &= ~(1<<PB3) |
| #define POVOLOVAK_HIGH PORTB |= (1<<PB3) |
| #define DATA (PIND & (1<<PD1)) |
| #define F_CPU 3686400UL |
| #include <util/delay.h> |
| void delay_ms(unsigned int ms) |
| { |
| while(ms) |
| { |
| _delay_ms(0.96); |
| ms--; |
| } |
| } |
| // ------------------------------------------------------------------ |
| // Main |
| // ------------------------------------------------------------------ |
| 34,24 → 24,23 |
| int last; |
| DDRD |= (1<<DDD5); |
| // DDRB |= (1<<DDB3); |
| DDRB |= (1<<DDB3); |
| TCCR1B |= (1 << CS10); // Set up timer |
| // PORTB |= (1<<PB3); |
| while(1) |
| { |
| if(!(PIND & (1<<PD1))) // kdyz je 0 na datech |
| if(!DATA) // kdyz je 0 na datech |
| { |
| PORTD &= ~(1<<PD5); // zapni vysilani |
| for (spozdeni=0;spozdeni<=8;spozdeni ++) |
| POVOLOVAK_HIGH; // zapni vysilani |
| for (spozdeni=8;spozdeni>=0;spozdeni --) // odpocitej dobu 8mi bitu |
| { |
| last = (PIND & (1<<PD1)); |
| last = DATA; |
| TCNT1 = 0; // zacni znova merit cas |
| while (TCNT1 <= delay) |
| while (TCNT1 <= delay) // bit poznas tak, ze je to nejmensi nalezena delka trvaleho stavu |
| { |
| if((PIND & (1<<PD1)) != last) |
| if(DATA != last) |
| { |
| if (TCNT1 < delay) delay = TCNT1; |
| break; |
| 58,9 → 47,16 |
| } |
| } |
| } |
| while (!(PIND & (1<<PD1))); |
| while (!DATA); // cekani na stop bit |
| for (spozdeni=2;spozdeni >= 0;spozdeni --) |
| { |
| TCNT1 = 0; // zacni znova merit cas zacatku stopbitu |
| while (TCNT1 <= delay) if(!DATA) break; |
| } |
| else PORTD |= (1<<PD5); // kdyz je 1 prepni na prijem |
| } |
| else POVOLOVAK_LOW; // kdyz je 1 prepni na prijem |
| delay = 60000; |
| } |
| return(0); |
| } |
| /programy/Atmel_C/RS232toRS485/default/Makefile |
|---|
| 0,0 → 1,77 |
| ############################################################################### |
| # Makefile for the project rs485 |
| ############################################################################### |
| ## General Flags |
| PROJECT = rs485 |
| MCU = attiny2313 |
| TARGET = rs485.elf |
| CC = avr-gcc.exe |
| ## Options common to compile, link and assembly rules |
| COMMON = -mmcu=$(MCU) |
| ## Compile options common for all C compilation units. |
| CFLAGS = $(COMMON) |
| CFLAGS += -Wall -gdwarf-2 -DF_CPU=3686400UL -O3 -funsigned-char -funsigned-bitfields |
| CFLAGS += -MD -MP -MT $(*F).o -MF dep/$(@F).d |
| ## Assembly specific flags |
| ASMFLAGS = $(COMMON) |
| ASMFLAGS += $(CFLAGS) |
| ASMFLAGS += -x assembler-with-cpp -Wa,-gdwarf2 |
| ## Linker flags |
| LDFLAGS = $(COMMON) |
| LDFLAGS += |
| ## Intel Hex file production flags |
| HEX_FLASH_FLAGS = -R .eeprom |
| HEX_EEPROM_FLAGS = -j .eeprom |
| HEX_EEPROM_FLAGS += --set-section-flags=.eeprom="alloc,load" |
| HEX_EEPROM_FLAGS += --change-section-lma .eeprom=0 --no-change-warnings |
| ## Libraries |
| LIBS = -lc -lm -lprintf_flt -lprintf_min -lscanf_flt -lscanf_min |
| ## Objects that must be built in order to link |
| OBJECTS = P232.o |
| ## Objects explicitly added by the user |
| LINKONLYOBJECTS = |
| ## Build |
| all: $(TARGET) rs485.hex rs485.eep size |
| ## Compile |
| P232.o: ../P232.c |
| $(CC) $(INCLUDES) $(CFLAGS) -c $< |
| ##Link |
| $(TARGET): $(OBJECTS) |
| $(CC) $(LDFLAGS) $(OBJECTS) $(LINKONLYOBJECTS) $(LIBDIRS) $(LIBS) -o $(TARGET) |
| %.hex: $(TARGET) |
| avr-objcopy -O ihex $(HEX_FLASH_FLAGS) $< $@ |
| %.eep: $(TARGET) |
| -avr-objcopy $(HEX_EEPROM_FLAGS) -O ihex $< $@ || exit 0 |
| %.lss: $(TARGET) |
| avr-objdump -h -S $< > $@ |
| size: ${TARGET} |
| @echo |
| @avr-size -C --mcu=${MCU} ${TARGET} |
| ## Clean target |
| .PHONY: clean |
| clean: |
| -rm -rf $(OBJECTS) rs485.elf dep/* rs485.hex rs485.eep |
| ## Other dependencies |
| -include $(shell mkdir dep 2>/dev/null) $(wildcard dep/*) |
| /programy/Atmel_C/RS232toRS485/default/rs485.hex |
|---|
| 0,0 → 1,15 |
| :1000000012C02AC029C028C027C026C025C024C0CD |
| :1000100023C022C021C020C01FC01EC01DC01CC0E4 |
| :100020001BC01AC019C011241FBECFEDCDBF10E0F8 |
| :10003000A0E6B0E0E0EEF0E003C0C89531960D9286 |
| :10004000A036B107D1F710E0A0E6B0E001C01D92E4 |
| :10005000A036B107E1F701C0D3CF8D9ABB9A8EB518 |
| :1000600081608EBD81993AC0C39A40E65AEE68E03D |
| :1000700070E080B3282F3327227030701DBC1CBC69 |
| :100080008CB59DB54817590770F080B399278270D9 |
| :10009000907028173907A1F38CB59DB58417950783 |
| :1000A00010F44CB55DB5615070408FEF6F3F78072D |
| :1000B00001F7819BFECF22E030E01DBC1CBC8CB55B |
| :1000C0009DB54817590710F08199F9CF215030405C |
| :1000D0008FEF2F3F380789F7819BC6CFC398C2CFD8 |
| :00000001FF |
| /programy/Atmel_C/RS232toRS485/rs232.aps |
|---|
| 0,0 → 1,0 |
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| /programy/Atmel_C/RS232toRS485/rs232.aws |
|---|
| 0,0 → 1,0 |
| <AVRWorkspace><IOSettings><CurrentRegisters/></IOSettings><part name="ATTINY2313"/><Files/></AVRWorkspace> |
| /programy/Atmel_C/RS232toRS485/rs485.aps |
|---|
| 0,0 → 1,0 |
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| /programy/Atmel_C/RS232toRS485/rs485.aws |
|---|
| 0,0 → 1,0 |
| <AVRWorkspace><IOSettings><CurrentRegisters/></IOSettings><part name="ATTINY2313"/><Files><File00001 Name="C:\E240\ass3\SW\P232.c" Position="156 71 914 523" LineCol="62 0" State="Maximized"/></Files></AVRWorkspace> |