Flash memory in pic16f887

[VRL_15]

I need to write the data to the flash memory by I2C communication and then read the same.
If anyone has an idea, please let me know

Thanks

 

[Nigel Goodwin]

Assuming it has writeable program memory (and I expect an 887 has) then you do it the same way as any other write to program memory. However, why are you wanting to use I2C to do it? - it seems a bit obscure?.

 

[VRL_15]

the writing to flash memory code in the datasheet didn't work for me.

Is there any specific directive org command to access flash and EEPROM?

is there any another option or any useful tutorial that can help me out?

Thanks

 

[Nigel Goodwin]

the writing to flash memory code in the datasheet didn't work for me.

You probably did something wrong then? - but again, why via I2C?.

You might have a look at:

 

[VRL_15]

i am trying to use an external memory and transfer the data from stored flash memory in PIC to it by I2C.

I think I am not going in the right direction.

Can you guide me in this.

I will start all over.

I need to record some data, write it to flash memory of PIC read it and also send it to external memory module by I2C communication.

I hope I made the question clear

please tell me the correct approach

 

[VRL_15]

Flash program memory may only be written to if the
destination address is in a segment of memory that is
not write-protected, as defined in bits WRT<1:0> of the
Configuration Word Register 2.

The datasheet of PIC16f887 states as above.

But how to access Configuration Word Register 2??????

 

[Nigel Goodwin]

Flash program memory may only be written to if the
destination address is in a segment of memory that is
not write-protected, as defined in bits WRT<1:0> of the
Configuration Word Register 2.

The datasheet of PIC16f887 states as above.

But how to access Configuration Word Register 2??????

Haven't you tried looking at the template in MPLAB for the chip?, here's the config settings for a 16F1827 which also has two config registers.

__CONFIG _CONFIG1, _FOSC_INTOSC & _WDTE_OFF & _PWRTE_OFF & _MCLRE_ON & _CP_OFF & _CPD_OFF & _BOREN_OFF & _CLKOUTEN_OFF & _IESO_OFF & _FCMEN_OFF
__CONFIG _CONFIG2, _WRT_OFF & _PLLEN_OFF & _STVREN_OFF & _BORV_19 & _LVP_OFF