42/42_EXT_03_42chips
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

nimp

Browse Source
This commit is contained in:
hugo LAMY
2025-03-09 03:00:00 +01:00
parent 03e1a7c19d
commit 90e77abe08
1 changed files with 61 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

64
module02/ex04/main.c
View File

@@ -36,6 +36,9 @@ typedef enum {
} State;
volatile char username[] = "admin";
volatile char password[] = "password";
volatile char username_input[100] = {0};
volatile char password_input[100] = {0};
volatile int input_index = 0;
volatile State state = USERNAME;
volatile int input_match = FALSE;
@@ -79,12 +82,20 @@ ISR(USART_RX_vect) { // Table 12-7 : we select the code for USART
uart_tx('\b'); // Move cursor back again
} else if (received_char == '\n' || received_char == '\r') { // if enter is received
if (state == USERNAME) {
if (input_index == STRLEN_LITERAL(username) && input_match) {
// if (input_index == STRLEN_LITERAL(username) && input_match) {
// username_correct = TRUE;
// } else {
// username_correct = FALSE;
// uart_printstr("(error1)");
// }
if (compare_str(username_input, username, STRLEN_LITERAL(username))) {
username_correct = TRUE;
} else {
username_correct = FALSE;
uart_printstr("(error1)");
}
input_match = FALSE;
state = PASSWORD;
input_index = 0;
@@ -109,18 +120,65 @@ ISR(USART_RX_vect) { // Table 12-7 : we select the code for USART
on_success();
}
} else {
fill_str(received_char);
if (state == USERNAME) {
check_str(received_char, username, STRLEN_LITERAL(username));
// check_str(received_char, username, STRLEN_LITERAL(username));
uart_tx(received_char);
}
else if (state == PASSWORD) {
check_str(received_char, password, STRLEN_LITERAL(password));
// check_str(received_char, password, STRLEN_LITERAL(password));
uart_tx('*');
}
input_index++;
}
}
void fill_str(char input) {
if (input_index >= 100) {
uart_printstr("(error8)");
return;
}
if (state == USERNAME) {
username_input[input_index] = input;
} else if (state == PASSWORD) {
password_input[input_index] = input;
}
}
int compare_str() {
char input_str[100] = {0};
char compare_str[100] = {0};
if (state == USERNAME) {
compare_str = username;
input_str = username_input;
} else if (state == PASSWORD) {
compare_str = password;
input_str = password_input;
}
int length = STRLEN_LITERAL(compare_str);
int index = 0;
while (*compare_str) {
if (index >= length) {
uart_printstr("(error5)");
return FALSE;
}
if (input_str[index] != *compare_str) {
uart_printstr("(error6)");
return FALSE;
}
compare_str++;
index++;
}
for (int i = 0; i < length; i++) {
if (input[i] != compare_str[i]) {
return FALSE;
}
}
return TRUE;
}
void check_str(char input, volatile char compare_str[], unsigned int length) {
if (input_index >= length) { // index has not already been incremented, so we need to compare greater or equal
uart_printstr("(error5)");