fx2eeprom.h¶
The fx2eeprom.h
header contains EEPROM routines for the Cypress FX2 series. When using this header, the fx2
library must be linked in.
Reference¶
Functions
-
bool eeprom_read(uint8_t chip, uint16_t addr, uint8_t *buf, uint16_t len, bool double_byte)¶
This function reads
len
bytes at memory addressaddr
from EEPROM chip with bus addresschip
tobuf
. It writes two address bytes ifdouble_byte
is true.Returns
true
if the read is successful,false
otherwise.
-
bool eeprom_write(uint8_t chip, uint16_t addr, uint8_t *buf, uint16_t len, bool double_byte, uint8_t page_size, uint8_t timeout)¶
This function writes
len
bytes at memory addressaddr
to EEPROM chip with bus addresschip
frombuf
. It writes two address bytes ifdouble_byte
is true.Data is written in chunks up to
2 ** page_size
bytes, with each chunk ending on an address that is a multiple of2 ** page_size
. Use the page size specified in the EEPROM datasheet for significantly higher write performance.timeout
specifies the number of polling attempts after a write; 0 means wait forever. At 100 kHz, one polling attempt is ~120 us, at 400 kHz, ~30 us, so for typical wait cycles of up to 5 ms, a timeout of 166 should be sufficient in all cases.Returns
true
if the write is successful,false
otherwise.