42/42_EXT_03_42chips
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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
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64
module02/ex04/main.c
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@@ -36,6 +36,9 @@ typedef enum {
} State; } State;
volatile char username[] = "admin"; volatile char username[] = "admin";
volatile char password[] = "password"; volatile char password[] = "password";
volatile char username_input[100] = {0};
volatile char password_input[100] = {0};
volatile int input_index = 0; volatile int input_index = 0;
volatile State state = USERNAME; volatile State state = USERNAME;
volatile int input_match = FALSE; 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 uart_tx('\b'); // Move cursor back again
} else if (received_char == '\n' || received_char == '\r') { // if enter is received } else if (received_char == '\n' || received_char == '\r') { // if enter is received
if (state == USERNAME) { 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; username_correct = TRUE;
} else { } else {
username_correct = FALSE; username_correct = FALSE;
uart_printstr("(error1)"); uart_printstr("(error1)");
} }
input_match = FALSE; input_match = FALSE;
state = PASSWORD; state = PASSWORD;
input_index = 0; input_index = 0;
@@ -109,18 +120,65 @@ ISR(USART_RX_vect) { // Table 12-7 : we select the code for USART
on_success(); on_success();
} }
} else { } else {
fill_str(received_char);
if (state == USERNAME) { if (state == USERNAME) {
check_str(received_char, username, STRLEN_LITERAL(username)); // check_str(received_char, username, STRLEN_LITERAL(username));
uart_tx(received_char); uart_tx(received_char);
} }
else if (state == PASSWORD) { else if (state == PASSWORD) {
check_str(received_char, password, STRLEN_LITERAL(password)); // check_str(received_char, password, STRLEN_LITERAL(password));
uart_tx('*'); uart_tx('*');
} }
input_index++; 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) { 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 if (input_index >= length) { // index has not already been incremented, so we need to compare greater or equal
uart_printstr("(error5)"); uart_printstr("(error5)");