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Hello,
In a program, I use SDK to programm flash like this : Initialisation : iFlashFD = open (BSP_DEVICE_NAME_FLASH_X, 0, NULL); For read : ioctl(iFlashFD, FLASH_CMD_SEEK, &wAdresse); read (iFlashFD, iVariable, wNbWords); For write : ioctl(iFlashFD, FLASH_CMD_SEEK, &wAdresse); write (iFlashFD, iVariable, wNbWords); Sometimes, the write operation makes the program counter jump in "asm void configUnhandledInterruptISR (void)". And when we look at the file vector.c, it's the interrupt 25 (SPI receiver full and/or error) which has occured. What can i do ? Thanks |
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Programming dataFlash
Started by ●October 24, 2003
Reply by ●October 25, 20032003-10-25
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Try disabling interrupts prior to writing to flash and re enable when finished. If this is not an option, you need to make sure that no interrupts that occur during the write operation access flash. I just learned this my self recently. Jacob -----Original Message----- From: Lionel Degoutte [mailto:] Sent: Friday, October 24, 2003 6:46 AM To: yahoo dsp56f807 Subject: [motoroladsp] Programming dataFlash Hello, In a program, I use SDK to programm flash like this : Initialisation : iFlashFD = open (BSP_DEVICE_NAME_FLASH_X, 0, NULL); For read : ioctl(iFlashFD, FLASH_CMD_SEEK, &wAdresse); read (iFlashFD, iVariable, wNbWords); For write : ioctl(iFlashFD, FLASH_CMD_SEEK, &wAdresse); write (iFlashFD, iVariable, wNbWords); Sometimes, the write operation makes the program counter jump in "asm void configUnhandledInterruptISR (void)". And when we look at the file vector.c, it's the interrupt 25 (SPI receiver full and/or error) which has occured. What can i do ? Thanks _____________________________________ Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. _____________________________________ About this discussion group: To Join: To Post: To Leave: Archives: http://www.yahoogroups.com/group/motoroladsp More Groups: http://www.dsprelated.com/groups.php3 |
