We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
Hi can anyone tell me the basics of what this code is doing? I know it is writing to eeprom but is it writing a byte at a time and incrimenting the address?
EECSN is the eeprom pin.
#define EE_WRSR 0x01 #define EE_WRITE 0x02 #define EE_READ 0x03 #define EE_WRDI 0x04 #define EE_RDSR 0x05 #define EE_WREN 0x06 void EEWrite(unsigned int addr, unsigned char b) { while((EEStatus() & 0x01) != 0x00) // Wait if busy ; EECSN = 0; SPI_ReadWrite(EE_WREN); EECSN = 1; EECSN = 0; SPI_ReadWrite(EE_WRITE); SPI_ReadWrite(addr >> 8); SPI_ReadWrite(addr & 0xff); SPI_ReadWrite(b); EECSN = 1; }
thank you all.
no i have not come across data segments before. i have did a little research and have changed output options to LARGE:Variables in XDATA.......and i have raised the PACKET_SIZE to 3000...enough to store approx 3 hours of data. The error has now gone....problem solved???
no i have not come across data segments before. If you want success, you need to get more familiar with the processor and the tools before forging on.
have changed output options to LARGE:Variables in XDATA.......and i have raised the PACKET_SIZE to 3000...enough to store approx 3 hours of data. The error has now gone....problem solved???
sure, but the right way? at the same time, you have, probably slowed the execution speed by 2 times or more.
Revert to SMALL and uniquely qualify your array to xdata.
Using LARGE can cost execution penalties of great magnitude and, typically will increase your code size by a large amount.
Code a for loop moving something to your array and look at the generated assembler for SMALL and LARGE
Erik