|
I would also like to have a copy of the code. Cheers, Yogeesh > ----- Original Message ----- > From: "Alexander Veit" <alex.veit@t...> > To: <> > Sent: Friday, September 12, 2003 5:18 AM > Subject: [68HC12] Re: Flash/EEPROM Programming via CAN > > UPS! > > > > To fast!*g* > > > > Thanks for sharing!! > > > > Alex |
|
|
Flash/EEPROM Programming via CAN
Started by ●September 10, 2003
Reply by ●September 13, 20032003-09-13
Reply by ●September 15, 20032003-09-15
|
For all who want download C sources of CAN bootrom: Just type http://groups.yahoo.com/group/68HC12/files in the browser and download file called bootrom.zip. WBR, lenux --- In , "Yogeesh" <yogeesh@c...> wrote: > I would also like to have a copy of the code. > > Cheers, > Yogeesh > > > > ----- Original Message ----- > > From: "Alexander Veit" <alex.veit@t...> > > To: <> > > Sent: Friday, September 12, 2003 5:18 AM > > Subject: [68HC12] Re: Flash/EEPROM Programming via CAN > > > > > > > UPS! > > > > > > To fast!*g* > > > > > > Thanks for sharing!! > > > > > > Alex |
Reply by ●September 15, 20032003-09-15
|
Hi Lenux, Thank you for you informative response and generously posting your code. I was curious what you did for the host (i.e., non-HC12) side of things. Did you write a PC program to communicate with your bootrom? If so, for what language (Visual Basic, some scripting language, etc.)? How did you interface your target HC12 to your PC (or whatever contains the "new" code)? Did you use any specific cables, like Vector's CANcardX (or make a "smart" cable mentioned in the app note)? Can you make any recommendations? Thanks, - Andrew -----Original Message----- From: lenux22 [mailto:] Sent: Thursday, September 11, 2003 3:22 AM To: Subject: [68HC12] Re: Flash/EEPROM Programming via CAN Hi Trevor, Yes, we made our own bootrom, which let us download program to FLASH by CAN. Our bootrom have size 2K and placed at 0xF000 address of HCS12 DG128 microcontroller. Boot procces consist of this parts: 1. Host (PC or CAN-master) send 4 messages with specific ID. This messages contains unique (4 double words) address of module. (Address writed in protected area of bootrom and can not be rewrited) 2. If module received its address it start receive other messages that hold RAM-data. This way let us load any program to RAM. At then end we send message this 'jump to RAM' command. 3. RAM program had all needed Flash/EEPROM routines (PROGRAM/ERASE/READ). For example host can send 'flash erase' command or 'load flash' command. 4. Then host done flash programming it's send 'reset command'. After this module reboots (by watchdog) and starts again from bootrom. After 0.3 sec passed, if no messages with address of modules comes, module jumped from bootrom to main program in Flash. All code (for bootrom and RAM program) writed in C. (assemler used only for 'jump to address' routine). All works fine. It is simple to write this programs (I have spend two weeks). If you want, I can send sources. WBR, lenux -------------------- ">http://docs.yahoo.com/info/terms/ |
|
|
Reply by ●September 17, 20032003-09-17
|
Hello, Trevor.
To interface with HCS12 (i.e. load program to it) we use CAN-USB or CAN-COM module. Yes, we write PC program (in C) to communicate via USB or COM port with target (HCS12 device). All cables we made by ourselfs. Our standart cable is 4-pin (CAN HIGH, CAN LOW, VCC and GND) and connected to HCS12 to supply it with Vcc. WBR, lenux --- In , "Trevor Wigle" <trevorwigle@e...> wrote: > Hi Lenux, > > Thank you for you informative response and generously posting your code. > > I was curious what you did for the host (i.e., non-HC12) side of things. > Did you write a PC program to communicate with your bootrom? If so, for > what language (Visual Basic, some scripting language, etc.)? How did you > interface your target HC12 to your PC (or whatever contains the "new" code)? > Did you use any specific cables, like Vector's CANcardX (or make a "smart" > cable mentioned in the app note)? Can you make any recommendations? > > Thanks, > - Andrew > > -----Original Message----- > From: lenux22 [mailto:lenux22@y...] > Sent: Thursday, September 11, 2003 3:22 AM > To: > Subject: [68HC12] Re: Flash/EEPROM Programming via CAN > > > Hi Trevor, > > > Yes, we made our own bootrom, which let us download program to FLASH > by CAN. Our bootrom have size 2K and placed at 0xF000 address of > HCS12 DG128 microcontroller. Boot procces consist of this parts: > > > 1. Host (PC or CAN-master) send 4 messages with specific ID. This > messages contains unique (4 double words) address of module. (Address > writed in protected area of bootrom and can not be rewrited) > > > 2. If module received its address it start receive other messages that > hold RAM-data. This way let us load any program to RAM. At then end > we send message this 'jump to RAM' command. > > > 3. RAM program had all needed Flash/EEPROM routines > (PROGRAM/ERASE/READ). For example host can send 'flash erase' > > > command or 'load flash' command. > > > 4. Then host done flash programming it's send 'reset command'. After > this module reboots (by watchdog) and starts again from bootrom. After > 0.3 sec passed, if no messages with address of modules comes, module > jumped from bootrom to main program in Flash. > > > > > All code (for bootrom and RAM program) writed in C. (assemler used > only for 'jump to address' routine). All works fine. It is simple to > write this programs (I have spend two weeks). If you want, I can send > sources. > > > > > WBR, lenux > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -------------------- > > > > ">http://docs.yahoo.com/info/terms/ |
Reply by ●September 17, 20032003-09-17
|
Hello Lenux, I have written a simple download procedure for downloading via RS232 (for DP256 CPU). It works fine, but I also wanted to download code via CAN. Is it possible that you send me a example how to do this? What Hardware, software do you use on PC- side ? Best regards Andy ----- Original Message ----- From: lenux22 To: Sent: Wednesday, September 17, 2003 11:18 AM Subject: [68HC12] Re: Flash/EEPROM Programming via CAN Hello, Trevor. To interface with HCS12 (i.e. load program to it) we use CAN-USB or CAN-COM module. Yes, we write PC program (in C) to communicate via USB or COM port with target (HCS12 device). All cables we made by ourselfs. Our standart cable is 4-pin (CAN HIGH, CAN LOW, VCC and GND) and connected to HCS12 to supply it with Vcc. WBR, lenux --- In , "Trevor Wigle" <trevorwigle@e...> wrote: > Hi Lenux, > > Thank you for you informative response and generously posting your code. > > I was curious what you did for the host (i.e., non-HC12) side of things. > Did you write a PC program to communicate with your bootrom? If so, for > what language (Visual Basic, some scripting language, etc.)? How did you > interface your target HC12 to your PC (or whatever contains the "new" code)? > Did you use any specific cables, like Vector's CANcardX (or make a "smart" > cable mentioned in the app note)? Can you make any recommendations? > > Thanks, > - Andrew > > -----Original Message----- > From: lenux22 [mailto:lenux22@y...] > Sent: Thursday, September 11, 2003 3:22 AM > To: > Subject: [68HC12] Re: Flash/EEPROM Programming via CAN > > > Hi Trevor, > > > Yes, we made our own bootrom, which let us download program to FLASH > by CAN. Our bootrom have size 2K and placed at 0xF000 address of > HCS12 DG128 microcontroller. Boot procces consist of this parts: > > > 1. Host (PC or CAN-master) send 4 messages with specific ID. This > messages contains unique (4 double words) address of module. (Address > writed in protected area of bootrom and can not be rewrited) > > > 2. If module received its address it start receive other messages that > hold RAM-data. This way let us load any program to RAM. At then end > we send message this 'jump to RAM' command. > > > 3. RAM program had all needed Flash/EEPROM routines > (PROGRAM/ERASE/READ). For example host can send 'flash erase' > > > command or 'load flash' command. > > > 4. Then host done flash programming it's send 'reset command'. After > this module reboots (by watchdog) and starts again from bootrom. After > 0.3 sec passed, if no messages with address of modules comes, module > jumped from bootrom to main program in Flash. > > > > > All code (for bootrom and RAM program) writed in C. (assemler used > only for 'jump to address' routine). All works fine. It is simple to > write this programs (I have spend two weeks). If you want, I can send > sources. > > > > > WBR, lenux > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -------------------- > > > > ">http://docs.yahoo.com/info/terms/ -------------------- |
|
|
Reply by ●September 18, 20032003-09-18
|
Hi, We use CAN for programming and internal data aquisition of target processor. We have our own hardware for PC interface(parallel port to CAN interface using HCS12). Our software developed in VC++ (MFC application). Refer Motorola application Note AN1828 "Flash programming via CAN" it is good document to begin. Regards, Venu --- Andreas Mueller <> wrote: > Hello Lenux, > > I have written a simple download procedure for > downloading via RS232 (for DP256 CPU). It works > fine, but I also wanted to download code via CAN. Is > it possible that you send me a example how to do > this? > What Hardware, software do you use on PC- side ? > Best regards > > Andy > > ----- Original Message ----- > From: lenux22 > To: > Sent: Wednesday, September 17, 2003 11:18 AM > Subject: [68HC12] Re: Flash/EEPROM Programming via > CAN > Hello, Trevor. > To interface with HCS12 (i.e. load program to it) > we use CAN-USB or > CAN-COM module. Yes, we write PC program (in C) to > communicate via USB > or COM port with target (HCS12 device). All cables > we made by > ourselfs. Our standart cable is 4-pin (CAN HIGH, > CAN LOW, VCC and GND) > and connected to HCS12 to supply it with Vcc. > > > WBR, lenux > > --- In , "Trevor Wigle" > <trevorwigle@e...> > wrote: > > Hi Lenux, > > > Thank you for you informative response and > generously posting your > code. > > > I was curious what you did for the host (i.e., > non-HC12) side of > things. > > Did you write a PC program to communicate with > your bootrom? If so, > for > > what language (Visual Basic, some scripting > language, etc.)? How > did you > > interface your target HC12 to your PC (or > whatever contains the > "new" code)? > > Did you use any specific cables, like Vector's > CANcardX (or make a > "smart" > > cable mentioned in the app note)? Can you make > any recommendations? > > > Thanks, > > - Andrew > > > -----Original Message----- > > From: lenux22 [mailto:lenux22@y...] > > Sent: Thursday, September 11, 2003 3:22 AM > > To: > > Subject: [68HC12] Re: Flash/EEPROM Programming > via CAN > > > > Hi Trevor, > > > > Yes, we made our own bootrom, which let us > download program to FLASH > > by CAN. Our bootrom have size 2K and placed at > 0xF000 address of > > HCS12 DG128 microcontroller. Boot procces > consist of this parts: > > > > 1. Host (PC or CAN-master) send 4 messages with > specific ID. This > > messages contains unique (4 double words) > address of module. > (Address > > writed in protected area of bootrom and can not > be rewrited) > > > > 2. If module received its address it start > receive other messages > that > > hold RAM-data. This way let us load any program > to RAM. At then end > > we send message this 'jump to RAM' command. > > > > 3. RAM program had all needed Flash/EEPROM > routines > > (PROGRAM/ERASE/READ). For example host can send > 'flash erase' > > > === message truncated === __________________________________ |
