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#include <stdio.h> #include <stdbool.h> #include <string.h> #include <time.h> // Define states typedef enum { NORMAL_OPERATION, NIR_RESTORE, NVM_RESTORE } SystemState; // Constants for the simulation #define DATA_SIZE 256 // Simulated memory regions char WarnungNIRIn[DATA_SIZE] = "Last Warning Status from NoInitRam."; char WarnungNVMIn[DATA_SIZE] = "Last Warning Status from NVRAM."; char WarnungRestore[DATA_SIZE]; // This will hold the restored data // Global variables SystemState currentState = NORMAL_OPERATION; unsigned int SicherungHaltenMax = 3; // Function to restore data from NoInitRam void restoreDataFrom_NIR(void) { printf("Restoring data from NoInitRam...\n"); strncpy(WarnungRestore, WarnungNIRIn, DATA_SIZE); printf("Data restored: %s\n", WarnungRestore); } // Function to restore data from NVRAM void restoreDataFrom_NVM(void) { printf("Restoring data from NVRAM...\n"); strncpy(WarnungRestore, WarnungNVMIn, DATA_SIZE); printf("Data restored: %s\n", WarnungRestore); } // Function to hold the data for a specified amount of time void holdDataFor(unsigned int SicherungHalten) { printf("Holding data for %u seconds...\n", SicherungHalten); clock_t start_time = clock(); while (clock() < ((float) start_time / CLOCKS_PER_SEC + SicherungHalten)); printf("Data hold complete.\n"); } int main() { bool DatenRestore = 0; bool SpeicherNIRUngueltig = (strlen(WarnungNIRIn) == 0); // Check if there is no valid data bool SpeicherNVMUngueltig = (strlen(WarnungNVMIn) == 0); // Check if there is no valid data bool Normalbetrieb = 0; // Main function to manage memory restoration while (true) { // Assume an infinite loop for a real-time system switch (currentState) { case NORMAL_OPERATION: if (!SpeicherNIRUngueltig) { // Check if there's any data currentState = NIR_RESTORE; DatenRestore = 1; Normalbetrieb = 1; } else if (!SpeicherNVMUngueltig) { // Check if there's any data currentState = NVM_RESTORE; DatenRestore = 1; Normalbetrieb = 1; } else { printf("Error: No valid memory data available.\n"); // Stay in NORMAL_OPERATION if no valid data } break; case NIR_RESTORE: restoreDataFrom_NIR(); holdDataFor(SicherungHaltenMax); // Hold data for 3 seconds currentState = NORMAL_OPERATION; DatenRestore = 0; Normalbetrieb = 1; break; case NVM_RESTORE: restoreDataFrom_NVM(); holdDataFor(SicherungHaltenMax); // Hold data for 3 seconds currentState = NORMAL_OPERATION; DatenRestore = 0; Normalbetrieb = 1; break; default: printf("Invalid state detected.\n"); currentState = NORMAL_OPERATION; break; } } return 0; }
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