uploaded 5 days ago
Library for reading and writing I2C EEPROM memory
Readme
# ESP-IDF component for for I2C EEPROM
An ESP-IDF component for communicating with I2C EEPROM memory chips.
## Usage
### Creating the EEPROM configuration struct
For AT24CS64 (page size of 32 bytes, 8-bit data addressing):
```
eeprom_configuration_t configuration = {
.device = i2c_device_handle,
.page_size = 16,
.address_16bit = false,
.timeout_ms = 100,
};
```
For AT24C512 (page size of 128 bytes, 16-bit data addressing):
```
eeprom_configuration_t configuration = {
.device = i2c_device_handle,
.page_size = 128,
.address_16bit = true,
.timeout_ms = 100,
};
```
### Reading from an EEPROM
```
uint8_t data[128];
esp_err_t res = eeprom_read(&configuration, 0, data, sizeof(data));
if (res == ESP_OK) {
printf("Read data from EEPROM: ");
for (size_t i = 0; i < sizeof(data); i++) {
printf("%02X ");
}
printf("\r\n");
} else {
printf("Failed to read from EEPROM (%u)\r\n", res);
}
```
### Writing to an EEPROM
```
uint8_t data[128];
for (size_t i = 0; i < sizeof(data); i++) data[i] = i; // Fill buffer with test pattern
esp_err_t res = eeprom_write(&configuration, 0, data, sizeof(data)); // Write 128 bytes to EEPROM at data address 0
if (res == ESP_OK) {
printf("Data written to EEPROM\r\n");
} else {
printf("Failed to write to EEPROM (%u)\r\n", res);
}
```
Links
- Homepage
-
Repository
76382589ac64075a9a089b2358f2c5260e4fbe8b
- Issues
- MIT
Supports all targets
To add this component to your project, run:
download archive
idf.py add-dependency "nicolaielectronics/eeprom^2.0.1"
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