Hi, everybody!
Next question. I'm a newbie at microchip bulk programming.
Earlier I did program the microchip using Arduino IDE, but now I'm trying to setup a proper environment to handy work with them via pure AVR-GCC.
I prefer to use Linux distro on my laptop. And there is why I can't use Atmel Studio, CodeVision or AVRStudio application.
I chose: AVR-GCC, AVR Toolchain and CodeBlocks.
All of these stuff works together fine with one note:
actually I can't properly setup internal clock setting for build process in Code::Blocks. I mean, I am doing next:
- load next fuses to ATTiny45: -U efuse:w:0xFF:m -U hfuse:w:0xDF:m -U lfuse:w:0x62:m (divide internal clock by eight)
- define #define F_CPU 1000000UL before #include <util/delay.h>
- write some example code with blinking led
But after loading this hex file to the chip, led isn't blink with proper interval. It is blinking much faster than 1 time per second. Like if I setup F_CPU 800000UL. But if I load this code to chip via Arduino IDE it works fine.
My test code:
#define F_CPU 1000000L
#include <avr/io.h>
#include <util/delay.h>
int main(void){
DDRB = 0x10;
while(1){
PORTB |= (1 << PB4);
_delay_ms(1000);
PORTB &= ~(1 << PB4);
_delay_ms(1000);
}
return 0;
}
I set two tools in Code::Blocks for setting fuses on microchip by using /usr/bin/avrdude:
ATTiny45 (int. 1MHz) with next string: "-p attiny45 -P /dev/ttyACM0 -b 19200 -c arduino -U efuse:w:0xFF:m -U hfuse:w:0xDF:m -U lfuse:w:0x62:m"
ATTiny45 (int. 8MHz) with next string: "-p attiny45 -P /dev/ttyACM0 -b 19200 -c arduino -U efuse:w:0xFF:m -U hfuse:w:0xDF:m -U lfuse:w:0xE2:m"
And if I do "avrdude -p attiny45 -P /dev/ttyACM0 -b 19200 -c arduino -v", then I'll get this:
Reading | ################################################## | 100% 0.01s
avrdude: Device signature = 0x1e9206
avrdude: safemode: lfuse reads as 62
avrdude: safemode: hfuse reads as DF
avrdude: safemode: efuse reads as FF
avrdude: safemode: lfuse reads as 62
avrdude: safemode: hfuse reads as DF
avrdude: safemode: efuse reads as FF
avrdude: safemode: Fuses OK (H:FF, E:DF, L:62)
avrdude done. Thank you.
That's mean that the fuses are correct. And there is why I think that something wrong with the build process in Code::Blocks and AVR-GCC
Here are logs from build systems. The first one from Arduino IDE, second from C::B:
/opt/arduino-1.0.6/hardware/tools/avr/bin/avr-g++ -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -mmcu=attiny45 -DF_CPU=1000000L -MMD
-DUSB_VID=null -DUSB_PID=null -DARDUINO=106 -I/opt/arduino-1.0.6/hardware/arduino/cores/arduino -I/home/me/sketchbook/hardware/attiny/variants/tiny8
/tmp/build6896905435354427440.tmp/TestFCPU.cpp -o /tmp/build6896905435354427440.tmp/TestFCPU.cpp.o
...
opt/arduino-1.0.6/hardware/tools/avr/bin/avr-gcc -Os -Wl,--gc-sections -mmcu=attiny45 -o /tmp/build6896905435354427440.tmp/TestFCPU.cpp.elf
/tmp/build6896905435354427440.tmp/TestFCPU.cpp.o /tmp/build6896905435354427440.tmp/core.a -L/tmp/build6896905435354427440.tmp -lm
/opt/arduino-1.0.6/hardware/tools/avr/bin/avr-objcopy -O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings
--change-section-lma .eeprom=0 /tmp/build6896905435354427440.tmp/TestFCPU.cpp.elf /tmp/build6896905435354427440.tmp/TestFCPU.cpp.eep
/opt/arduino-1.0.6/hardware/tools/avr/bin/avr-objcopy -O ihex -R .eeprom /tmp/build6896905435354427440.tmp/TestFCPU.cpp.elf
/tmp/build6896905435354427440.tmp/TestFCPU.cpp.hex
Binary sketch size: 132 bytes (of a 4,096 byte maximum)
avr-gcc -mmcu=attiny45 -Os -Wall -Os -I/usr/include -c main.c -o obj/Release/main.o
avr-g++ -L/usr/lib -o bin/Release/TestFCPU.elf obj/Release/main.o -mmcu=attiny45
Output file is bin/Release/TestFCPU.elf with size 3,66 KB
Running project post-build steps
avr-size bin/Release/TestFCPU.elf
text data bss dec hex filename
82 0 0 82 52 bin/Release/TestFCPU.elf
avr-objcopy -R .eeprom -R .fuse -R .lock -R .signature -O ihex bin/Release/TestFCPU.elf bin/Release/TestFCPU.hex
avr-objcopy --no-change-warnings -j .eeprom --change-section-lma .eeprom=0 -O ihex bin/Release/TestFCPU.elf bin/Release/TestFCPU.eep
Thanks in advance for any help.
=== SOLUTION ===
I did next changes in Settings => Compiler...
1. Changed the Linker for dynamic libs in Toolchain executables form "avr-g++" to "avr-gcc":
(http://funkyimg.com/p/UBii.png) (http://funkyimg.com/view/UBii)
2. Changed the Search directories for Linker and Compiler from /usr/include to /usr/lib/avr/include and from /usr/lib to /usr/lib/avr/lib:
(http://funkyimg.com/p/UBhD.jpg) (http://funkyimg.com/view/UBhD)
Thanks for help to everyone.