zcbzjx 于 2012-12-18 20:00 编辑



此贴有毛病，请看更新帖

有同学已经发过使Arduino支持ATmega168PA，现在我发的这个是用optiboot的bootloader，而且让他工作在8MHz,这样我们就可以用3.3V电源供电，好处？。



以下均在arduino1.01 测试通过，而且能稳定运行。



第一步，下载optiboot-with-168p.zip，拷贝到<path-where-you-installed-arduino-1.0>\hardware\arduino\bootloaders,替换原来的optiboot目录。



第二步，修改makefile文件，建议大家下载Notepad++，这样编辑就不会乱行。



找到这个位置ARDUINO 代码复制打印

pro8: TARGET = pro_8MHzpro8: MCU_TARGET = atmega168pro8: CFLAGS += '-DLED_START_FLASHES=3' '-DBAUD_RATE=115200'pro8: AVR_FREQ = 8000000Lpro8: $(PROGRAM)_pro_8MHz.hexpro8: $(PROGRAM)_pro_8MHz.lstpro8_isp: pro8pro8_isp: TARGET = pro_8MHz# 2.7V brownoutpro8_isp: HFUSE = DD# Full swing xtal (20MHz) 258CK/14CK+4.1mspro8_isp: LFUSE = C6# 512 byte bootpro8_isp: EFUSE = 04pro8_isp: isp

pro8: TARGET = pro_8MHz


pro8: MCU_TARGET = atmega168


pro8: CFLAGS += '-DLED_START_FLASHES=3' '-DBAUD_RATE=115200'


pro8: AVR_FREQ = 8000000L


pro8: $(PROGRAM)_pro_8MHz.hex


pro8: $(PROGRAM)_pro_8MHz.lst





pro8_isp: pro8


pro8_isp: TARGET = pro_8MHz

2.7V brownout

pro8_isp: HFUSE = DD

Full swing xtal (20MHz) 258CK/14CK+4.1ms

pro8_isp: LFUSE = C6

512 byte boot

pro8_isp: EFUSE = 04


pro8_isp: isp

在这个位置之后加ARDUINO 代码复制打印

# Atmega168p target 8Mhz added by zcbzjxatmega168p_pro8: TARGET = Atmega168p_pro_8MHzatmega168p_pro8: MCU_TARGET = atmega168patmega168p_pro8: CFLAGS += '-DLED_START_FLASHES=3' '-DBAUD_RATE=115200'atmega168p_pro8: AVR_FREQ = 8000000Latmega168p_pro8: $(PROGRAM)_Atmega168p_pro_8MHz.hexatmega168p_pro8: $(PROGRAM)_Atmega168p_pro_8MHz.lstatmega168p_pro8_isp: Atmega168p_pro8atmega168p_pro8_isp: TARGET = Atmega168p_pro_8MHz# 2.7V brownoutatmega168p_pro8_isp: HFUSE = DD# Full swing xtal (20MHz) 258CK/14CK+4.1msatmega168p_pro8_isp: LFUSE = C6# 512 byte bootatmega168p_pro8_isp: EFUSE = 04atmega168p_pro8_isp: isp

# Atmega168p target 8Mhz added by zcbzjx

atmega168p_pro8: TARGET = Atmega168p_pro_8MHz

atmega168p_pro8: MCU_TARGET = atmega168p

atmega168p_pro8: CFLAGS += '-DLED_START_FLASHES=3' '-DBAUD_RATE=115200'

atmega168p_pro8: AVR_FREQ = 8000000L

atmega168p_pro8: $(PROGRAM)_Atmega168p_pro_8MHz.hex

atmega168p_pro8: $(PROGRAM)_Atmega168p_pro_8MHz.lst



atmega168p_pro8_isp: Atmega168p_pro8

atmega168p_pro8_isp: TARGET = Atmega168p_pro_8MHz

# 2.7V brownout

atmega168p_pro8_isp: HFUSE = DD

# Full swing xtal (20MHz) 258CK/14CK+4.1ms

atmega168p_pro8_isp: LFUSE = C6

# 512 byte boot

atmega168p_pro8_isp: EFUSE = 04

atmega168p_pro8_isp: isp

大家可以看，基本上就是改了个MCU_TARGET，atmega168变成了atmega168p。

第三步，生成bootloader

1，启动命令提示符
按Win + R，输入cmd，回车键
2，改变工作目录，
cd "<path-where-you-installed-arduino-1.0>\hardware\arduino\bootloaders\optiboot\"
Enter
3，启动编译器输入
omake atmega168p_pro8
Enter

现在，文件夹"<path-where-you-installed-arduino-1.0>\hardware\arduino\bootloaders\optiboot\"中，就可以找到你为ATmega168p(8MHz)编译optiboot引导程序：optiboot_atmega168p_pro8.hex

第四步，修改boards.txt

在最后加入ARDUINO 代码复制打印

##############################################################micromagician168pa.name= optiboot (3.3V, 8 MHz) w/ ATmega168PAmicromagician168pa.upload.protocol=arduinomicromagician168pa.upload.maximum_size=15872micromagician168pa.upload.speed=19200micromagician168pa.bootloader.low_fuses=0xc6micromagician168pa.bootloader.high_fuses=0xddmicromagician168pa.bootloader.extended_fuses=0x04micromagician168pa.bootloader.path=optibootmicromagician168pa.bootloader.file=optiboot_Atmega168p_pro_8MHz.hexmicromagician168pa.bootloader.unlock_bits=0x3Fmicromagician168pa.bootloader.lock_bits=0x0Fmicromagician168pa.build.mcu=atmega168pmicromagician168pa.build.f_cpu=8000000Lmicromagician168pa.build.core=arduinomicromagician168pa.build.variant=standard

##############################################################



micromagician168pa.name= optiboot (3.3V, 8 MHz) w/ ATmega168PA



micromagician168pa.upload.protocol=arduino

micromagician168pa.upload.maximum_size=15872

micromagician168pa.upload.speed=19200



micromagician168pa.bootloader.low_fuses=0xc6

micromagician168pa.bootloader.high_fuses=0xdd

micromagician168pa.bootloader.extended_fuses=0x04

micromagician168pa.bootloader.path=optiboot

micromagician168pa.bootloader.file=optiboot_Atmega168p_pro_8MHz.hex

micromagician168pa.bootloader.unlock_bits=0x3F

micromagician168pa.bootloader.lock_bits=0x0F



micromagician168pa.build.mcu=atmega168p

micromagician168pa.build.f_cpu=8000000L

micromagician168pa.build.core=arduino

micromagician168pa.build.variant=standard

重新启动arduino，就可以在板卡找到"optiboot (3.3V, 8 MHz) w/ ATmega168PA"


希望大家举一反三，生成自己需要的bootloader。

参考：
Add support for ATmega168P in optiboot
ATMega8 Arduino Bootloader (Optiboot)
via - 极客工坊