sd_flash_write

[Nasib]

PLease, could anyone provide me a code exaple on which i can learn how to use sd_flash_write & sd_flash_erease ? 

I tried to use them but keil give me this : 

.\_build\nrf51822_xxac.axf: Error: L6218E: Undefined symbol flash_word_write (referred from main.o).

Thanks 

[Jørgen Holmefjord]

Hi,

flash_word_write is a function defined in the flashwrite example in the SDK, this is not related to the use of sd_flash_write & sd_flash_erease. How are you trying to use the functions? Are you using them in a softdevice project?

Best regards,
Jørgen

[Nasib]

Hi. I solved that error. but i still cant write in memory while i am using the sde. 

The code pass over the lines, erases properly the memory but doesn't write anything. 

I want to know how to write... and which is the free memory i can use. 

In the code below you can see what i am doing ( i use codesize-2 because i already used codesize-1 to write something before initialize the sde) 



pg_size = NRF_FICR->CODEPAGESIZE;
pg_num = NRF_FICR->CODESIZE-2; // Use last page in flash
//---------------------------------
addr = (uint32_t *)(pg_size * pg_num);
uint32_t buffer[3]={1,2,3};
sd_flash_page_erase(pg_num);
nrf_delay_ms(50);
devuelve= sd_flash_write(addr,(uint32_t*)buffer,3);



devuelve is 0.... and nothing is writed in flash