ICS-Microprocessor-2020/Modbus_1_Deva4ki
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Добавлена проверка адреса на наличие ошибок перед чтением из ПЗУ.
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Лада Южакова 2023-06-21 13:17:50 +00:00
parent baa98357c1
commit 67f31a96dc
2 changed files with 56 additions and 48 deletions
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85
device_address.c
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@ -1,41 +1,46 @@
#include "device_address.h" #include "device_address.h"
#define DEFAULT_MODBUS_ADDRESS (32) uint8_t EEPROM_ReadByte(uint32_t adr)
{
uint8_t EEPROM_ReadByte(uint8_t __eeprom*adr) while (EECR & (1<<EEPE));
{ EEAR = adr;
while (EECR & (1<<EEWE)); EECR |= (1<<EERE);
EEAR = (uint16_t)adr; return EEDR;
EECR |= (1<<EERE); }
return EEDR;
} void EEPROM_WriteByte(uint32_t adr, uint8_t value)
{
void EEPROM_WriteByte(uint8_t __eeprom*adr, uint8_t value) while (EECR & (1<<EEPE));
{ EEAR = adr;
while (EECR & (1<<EEWE)); EEDR = value;
EEAR = (uint16_t)adr; EECR |= (1<<EEMPE);
EEDR = value; EECR |= (1<<EEPE);
EECR |= (1<<EEMWE); }
EECR |= (1<<EEWE);
} uint8_t get_device_address(void)
{
uint8_t get_device_address(void) if(is_valid_device_address())
{ {
return EEPROM_ReadByte(0); return EEPROM_ReadByte(0);
} }
else
void write_device_address(uint8_t address) {
{ return get_default_address();
EEPROM_WriteByte(0, address); }
EEPROM_WriteByte(1, ~address); }
}
void write_device_address(uint8_t address)
uint8_t get_default_address(void) {
{ EEPROM_WriteByte(0, address);
return DEFAULT_MODBUS_ADDRESS; EEPROM_WriteByte(1, ~address);
} }
int is_valid_device_address(void) uint8_t get_default_address(void)
{ {
return (EEPROM_ReadByte(0) ^ EEPROM_ReadByte(1) == 0xFF); return DEFAULT_MODBUS_ADDRESS;
}
int is_valid_device_address(void)
{
return ((EEPROM_ReadByte(0) ^ EEPROM_ReadByte(1)) == 0xFF);
} }

19
device_address.h
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@ -1,9 +1,12 @@
#ifndef DEVICE_ADDRESS_H #ifndef DEVICE_ADDRESS_H
#define DEVICE_ADDRESS_H #define DEVICE_ADDRESS_H
#include <stdint.h>
uint8_t get_device_address(void); #include <avr/io.h>
void write_device_address(uint8_t address); #define DEFAULT_MODBUS_ADDRESS (32)
uint8_t get_default_address(void);
int is_valid_device_address(void); uint8_t get_device_address(void);
void write_device_address(uint8_t address);
uint8_t get_default_address(void);
int is_valid_device_address(void);
#endif /*DEVICE_ADDRESS_H*/ #endif /*DEVICE_ADDRESS_H*/