SPI EEPROM Access Library for RaspberryPi
- WiringPi Library
This project uses the wiringPiSPISetup() function to initialize SPI, and use /dev/spidev0.0.
If you use it on a board other than the RPI board, you may need to change the SPI device.
As far as I know, there are these libraries.- WiringPi for OrangePi
- WiringPi for BananaPi
- WiringPi for NanoPi
- WiringPi for Pine-64
#define SPI_CHANNEL 0 // /dev/spidev0.0
//#define SPI_CHANNEL 1 // /dev/spidev0.1
snprintf(device, 19, "/dev/spidev0.%d", SPI_CHANNEL);
There are several variations in the M95 series.
4.5 V to 5.5 V for M95xxx
2.5 V to 5.5 V for M95xxx-W
1.8 V to 5.5 V for M95xxx-R
M95xxx don't work with Raspberry Pi
| Device | # of Bits | # of Bytes | Byte Address range | Page Size(Byte) | Page Address Range |
|---|---|---|---|---|---|
| M95080 | 8K | 1024 | 0x00-0x3FF | 32 | 0-31 |
| M95160 | 16K | 2048 | 0x00-0x7FF | 32 | 0-63 |
| M95320 | 32K | 4096 | 0x00-0xFFF | 32 | 0-127 |
| M95640 | 64K | 8192 | 0x00-0x1FFF | 32 | 0-255 |
| M95128 | 128K | 16384 | 0x00-0x3FFF | 64 | 0-255 |
| M95256 | 256K | 32768 | 0x00-0x7FFF | 64 | 0-511 |
| Device | # of Bits | # of Bytes | Byte Address Range | Page Size(Byte) | Page Address Range |
|---|---|---|---|---|---|
| AT25010 | 1K | 128 | 0-0x7F | 8 | 0-15 |
| AT25020 | 2K | 256 | 0-0xFF | 8 | 0-31 |
| AT25040 | 4K | 512 | 0-0x1FF | 8 | 0-63 |
| AT25080 | 8K | 1024 | 0-0x3FF | 32 | 0-31 |
| AT25160 | 16K | 2048 | 0-0x7FF | 32 | 0-63 |
| AT25320 | 32K | 4096 | 0-0xFFF | 32 | 0-127 |
| AT25640 | 64K | 8192 | 0-0x1FFF | 32 | 0-255 |
| AT25128 | 128K | 16384 | 0-0x3FFF | 64 | 0-255 |
| AT25256 | 256K | 32768 | 0-0x7FFF | 64 | 0-511 |
| AT25512 | 512K | 65536 | 0-0xFFFF | 128 | 0-511 |
for M95080
cc -o main main.c eeprom.c -lwiringPi -DM95080
for M95160
cc -o main main.c eeprom.c -lwiringPi -DM95160
for M95320
cc -o main main.c eeprom.c -lwiringPi -DM95320
for M95640
cc -o main main.c eeprom.c -lwiringPi -DM95640
for M95128
cc -o main main.c eeprom.c -lwiringPi -DM95128
for M95256
cc -o main main.c eeprom.c -lwiringPi -DM95256
for AT25010
cc -o main main.c eeprom.c -lwiringPi -DAT25010
for AT25020
cc -o main main.c eeprom.c -lwiringPi -DAT25020
for AT25040
cc -o main main.c eeprom.c -lwiringPi -DAT25040
for AT25080
cc -o main main.c eeprom.c -lwiringPi -DAT25080
for AT25160
cc -o main main.c eeprom.c -lwiringPi -DAT25160
for AT25320
cc -o main main.c eeprom.c -lwiringPi -DAT25320
for AT25640
cc -o main main.c eeprom.c -lwiringPi -DAT25640
for AT25128
cc -o main main.c eeprom.c -lwiringPi -DAT25128
for AT25256
cc -o main main.c eeprom.c -lwiringPi -DAT25256
for AT25512
cc -o main main.c eeprom.c -lwiringPi -DAT25512
// Open device
uint32_t eeprom_open(struct eeprom *dev, int16_t channel, uint32_t model);
// Get EEPROM memory byte size
uint32_t eeprom_totalBytes(struct eeprom *dev);
// Get EEPROM page number
int16_t eeprom_lastPage(struct eeprom *dev);
// Get EEPROM page byte size
uint16_t eeprom_pageSize(struct eeprom *dev);
// Get EEPROM name
char * eeprom_name(struct eeprom *dev);
// Read data from EEPROM
uint8_t eeprom_readByte(struct eeprom *dev, uint16_t address);
// Write data to EEPROM by address
void eeprom_writeByte(struct eeprom *dev, uint16_t address, uint8_t data);
// Write data to EEPROM by page
void eeprom_writePage(struct eeprom *dev, uint16_t pages, uint8_t *data);
