Hi all , I have just designed a board with a JTAG interface and ISP interface ( with some good advice from past discussions on this forum)and have also bought the JTAG programmer. Now before I send the board for layout , I am looking at the nitty gritty of bootloading a hello world programme ( flashing leds!) on it. Does the ATMEL parts come preprogrammed with a standard bootloader in the boot section of the flash , so that I can compile link and load using the AVRISP mkII? If yes what are the functionalities of the boot loader? If no are there any example bootloader for ATmega which i could use to start off, without reinventing the wheel. BR Rate
Booting ATMEGA2560
Started by ●October 19, 2007
Reply by ●October 19, 20072007-10-19
On Oct 19, 11:30 am, ratemonotonic <niladri1...@gmail.com> wrote:> preprogrammed with a standard bootloader in the boot section of the > flash , so that I can compile link and load using the AVRISP mkII? IfBy definition, you do not need any code in the micro in order to program over ISP.
Reply by ●October 19, 20072007-10-19
"ratemonotonic" <niladri1979@gmail.com> skrev i meddelandet news:1192807850.637196.324650@q3g2000prf.googlegroups.com...> Hi all , > > I have just designed a board with a JTAG interface and ISP interface > ( with some good advice from past discussions on this forum)and have > also bought the JTAG programmer. Now before I send the board for > layout , I am looking at the nitty gritty of bootloading a hello world > programme ( flashing leds!) on it. Does the ATMEL parts come > preprogrammed with a standard bootloader in the boot section of the > flash , so that I can compile link and load using the AVRISP mkII? If > yes what are the functionalities of the boot loader? > > If no are there any example bootloader for ATmega which i could use to > start off, without reinventing the wheel. > > > BR > Rate >It is enough to download AVR Studio connect the AVR ISP to the ISP interface. No need for a bootloader. If you want to be able to do field upgrade later, without the AVR ISP or a JTAG ICE; then there are some application notes available on www.atmel.com or www.avrfreaks.net -- Best Regards, Ulf Samuelsson This is intended to be my personal opinion which may, or may not be shared by my employer Atmel Nordic AB
Reply by ●October 20, 20072007-10-20
On 19 Oct, 20:28, "Ulf Samuelsson" <u...@a-t-m-e-l.com> wrote:> "ratemonotonic" <niladri1...@gmail.com> skrev i meddelandetnews:1192807850.637196.324650@q3g2000prf.googlegroups.com... > > > > > Hi all , > > > I have just designed a board with a JTAG interface and ISP interface > > ( with some good advice from past discussions on this forum)and have > > also bought the JTAG programmer. Now before I send the board for > > layout , I am looking at the nitty gritty of bootloading a hello world > > programme ( flashing leds!) on it. Does the ATMEL parts come > > preprogrammed with a standard bootloader in the boot section of the > > flash , so that I can compile link and load using the AVRISP mkII? If > > yes what are the functionalities of the boot loader? > > > If no are there any example bootloader for ATmega which i could use to > > start off, without reinventing the wheel. > > > BR > > Rate > > It is enough to download AVR Studio connect the AVR ISP > to the ISP interface. > No need for a bootloader. > If you want to be able to do field upgrade later, without the > AVR ISP or a JTAG ICE; then there are some application > notes available onwww.atmel.comorwww.avrfreaks.net > > -- > Best Regards, > Ulf Samuelsson > This is intended to be my personal opinion which may, > or may not be shared by my employer Atmel Nordic AB- Hide quoted text - > > - Show quoted text -thanks, Very good ! So I can get started developing code easy peasy! an worry about field upgrade at a later stage.