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Embedded development / Re: Setting AVR Fuses in C code
« Last post by Pecan on April 11, 2024, 06:57:59 am »Be careful. Validate the code before using it.
Chatty can make things up ya know.
User
Can you translate that to c++
ChatGPT
Certainly! Here's the code translated to C++:
cpp
Copy code
#include <avr/io.h>
#include <util/delay.h>
// Default fuses
struct Fuses {
uint8_t low;
uint8_t high;
uint8_t extended;
};
Fuses fuses_default = {
.low = (LFUSE_DEFAULT & ~FUSE_CKDIV8 & ~FUSE_SPIEN & ~FUSE_BODLEVEL1 & ~FUSE_BODLEVEL0),
.high = (HFUSE_DEFAULT & ~FUSE_BOOTSZ1 & ~FUSE_BOOTSZ0 & ~FUSE_SPIEN & ~FUSE_EESAVE),
.extended = EFUSE_DEFAULT,
};
// Modified fuses
Fuses fuses_modified = {
.low = 0xFF, // Sets the lfuse to use an external crystal oscillator
.high = (HFUSE_DEFAULT & ~FUSE_BOOTSZ1 & ~FUSE_BOOTSZ0 & ~FUSE_SPIEN & ~FUSE_EESAVE),
.extended = EFUSE_DEFAULT,
};
int main(void) {
DDRB |= (1 << PB5); // Set PB5 (Arduino pin 13) as output
while (1) {
PORTB |= (1 << PB5); // Turn on LED
_delay_ms(1000); // Delay for 1 second
PORTB &= ~(1 << PB5); // Turn off LED
_delay_ms(1000); // Delay for 1 second
}
return 0;
}
In this C++ version, I've used a struct to define the Fuses and initialized two instances: fuses_default and fuses_modified. The .low, .high, and .extended members of the Fuses struct correspond to the low, high, and extended fuse bytes, respectively.
The rest of the code remains the same. Make sure you have the AVR GCC toolchain installed to compile and upload this C++ code to your Atmega328P microcontroller.
Chatty can make things up ya know.
User
Can you translate that to c++
ChatGPT
Certainly! Here's the code translated to C++:
cpp
Copy code
#include <avr/io.h>
#include <util/delay.h>
// Default fuses
struct Fuses {
uint8_t low;
uint8_t high;
uint8_t extended;
};
Fuses fuses_default = {
.low = (LFUSE_DEFAULT & ~FUSE_CKDIV8 & ~FUSE_SPIEN & ~FUSE_BODLEVEL1 & ~FUSE_BODLEVEL0),
.high = (HFUSE_DEFAULT & ~FUSE_BOOTSZ1 & ~FUSE_BOOTSZ0 & ~FUSE_SPIEN & ~FUSE_EESAVE),
.extended = EFUSE_DEFAULT,
};
// Modified fuses
Fuses fuses_modified = {
.low = 0xFF, // Sets the lfuse to use an external crystal oscillator
.high = (HFUSE_DEFAULT & ~FUSE_BOOTSZ1 & ~FUSE_BOOTSZ0 & ~FUSE_SPIEN & ~FUSE_EESAVE),
.extended = EFUSE_DEFAULT,
};
int main(void) {
DDRB |= (1 << PB5); // Set PB5 (Arduino pin 13) as output
while (1) {
PORTB |= (1 << PB5); // Turn on LED
_delay_ms(1000); // Delay for 1 second
PORTB &= ~(1 << PB5); // Turn off LED
_delay_ms(1000); // Delay for 1 second
}
return 0;
}
In this C++ version, I've used a struct to define the Fuses and initialized two instances: fuses_default and fuses_modified. The .low, .high, and .extended members of the Fuses struct correspond to the low, high, and extended fuse bytes, respectively.
The rest of the code remains the same. Make sure you have the AVR GCC toolchain installed to compile and upload this C++ code to your Atmega328P microcontroller.
