Steve Karg
4781582204
* Changed ATmega168 example for ATmega328 on Arduino Uno R3 with DFR0259 RS485 shield. Added ADC interface from BDK port and mapped to some AV objects. Removed MS/TP MAC address DIP switch GPIO and moved MS/TP configuration to AV objects. Added AV units property. Added some Uno R3 Digital Inputs and outputs mapped to some BV. Added AVR EEPROM from BDK port and mapped some non-volatile data including MAC address and max manager and baud rate, device ID and names and description and location.
54 lines
1.2 KiB
C
54 lines
1.2 KiB
C
/**
|
|
* @brief This module manages the internal AVR non-volatile data storage
|
|
* @author Steve Karg <skarg@users.sourceforge.net>
|
|
* @date 2007
|
|
* @copyright SPDX-License-Identifier: MIT
|
|
*/
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include "hardware.h"
|
|
#include "eeprom.h"
|
|
|
|
/**
|
|
* @brief Read a block of bytes from the EEPROM
|
|
* @param eeaddr - EEPROM starting memory address (offset of zero)
|
|
* @param buf - where to store the data that is read
|
|
* @param len - number of bytes of data to read
|
|
* @return The number of bytes read
|
|
*/
|
|
int eeprom_bytes_read(uint16_t eeaddr, uint8_t *buf, int len)
|
|
{
|
|
int count = 0; /* return value */
|
|
|
|
while (len) {
|
|
__EEGET(buf[count], eeaddr);
|
|
count++;
|
|
eeaddr++;
|
|
len--;
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
/**
|
|
* @brief Write a block of bytes to the EEPROM
|
|
* @param eeaddr - EEPROM starting memory address (offset of zero)
|
|
* @param buf - data to write to the EEPROM
|
|
* @param len - number of bytes of data
|
|
* @return The number of bytes written
|
|
*/
|
|
int eeprom_bytes_write(uint16_t eeaddr, const uint8_t *buf, int len)
|
|
{
|
|
int count = 0;
|
|
|
|
while (len) {
|
|
__EEPUT(eeaddr, buf[count]);
|
|
count++;
|
|
eeaddr++;
|
|
len--;
|
|
}
|
|
|
|
return count;
|
|
}
|