add save option

src/ascii_cmd.c

@@ -366,7 +366,11 @@ void process_ascii_cmd(RDSModulator* enc, unsigned char *str) {
     unsigned char *cmd, *arg;
     uint16_t cmd_len = _strnlen((const char*)str, CTL_BUFFER_SIZE);
 
-    // Process commands with = delimiter at position 2 (format: X=y...)
+    if (str[0] == '*') {
+        saveToFile(enc->enc);
+        return;
+    }
+
     if (cmd_len > 1 && str[1] == '=') {
         cmd = str;
         cmd[1] = 0;

src/ascii_cmd.h

@@ -1,4 +1,5 @@
 #include "modulator.h"
+#include "rds.h"
 #define CMD_BUFFER_SIZE	255
 #define CTL_BUFFER_SIZE	(CMD_BUFFER_SIZE * 2)
 #define READ_TIMEOUT_MS	100

src/rds.c

@@ -4,8 +4,10 @@
 #include "lib.h"
 #include <time.h>
 
-void saveToFile(const char *filename, RDSEncoder *emp) {
-    FILE *file = fopen(filename, "wb");
+void saveToFile(RDSEncoder *emp) {
+	char encoderPath[256];
+	snprintf(encoderPath, sizeof(encoderPath), "%s/.rdsEncoder", getenv("HOME"));
+    FILE *file = fopen(encoderPath, "wb");
     if (file == NULL) {
         perror("Error opening file");
         return;
@@ -14,8 +16,10 @@ void saveToFile(const char *filename, RDSEncoder *emp) {
     fclose(file);
 }
 
-void loadFromFile(const char *filename, RDSEncoder *emp) {
-    FILE *file = fopen(filename, "rb");
+void loadFromFile(RDSEncoder *emp) {
+	char encoderPath[256];
+	snprintf(encoderPath, sizeof(encoderPath), "%s/.rdsEncoder", getenv("HOME"));
+    FILE *file = fopen(encoderPath, "rb");
     if (file == NULL) {
         perror("Error opening file");
         return;
@@ -24,8 +28,10 @@ void loadFromFile(const char *filename, RDSEncoder *emp) {
     fclose(file);
 }
 
-int fileExists(const char *filename) {
-    FILE *file = fopen(filename, "rb");
+int rdssaved() {
+	char encoderPath[256];
+	snprintf(encoderPath, sizeof(encoderPath), "%s/.rdsEncoder", getenv("HOME"));
+    FILE *file = fopen(encoderPath, "rb");
     if (file) {
         fclose(file);
         return 1;
@@ -404,13 +410,10 @@ void init_rds_encoder(RDSEncoder* enc) {
 
 	init_rtplus(enc, GROUP_11A);
 
-	char encoderPath[256];
-	snprintf(encoderPath, sizeof(encoderPath), "%s/.rdsEncoder", getenv("HOME"));
-
-	if (fileExists(encoderPath)) {
-		loadFromFile(encoderPath, enc);
+	if (rdssaved()) {
+		loadFromFile(enc);
 	} else {
-		saveToFile(encoderPath, enc);
+		saveToFile(enc);
 	}
 }
 

src/rds.h

@@ -279,6 +279,10 @@ typedef struct
 
 #define IS_TYPE_B(a)	(a[1] & INT16_11)
 
+void saveToFile(RDSEncoder *emp);
+void loadFromFile(RDSEncoder *emp);
+int rdssaved();
+
 void init_rds_encoder(RDSEncoder* enc);
 void get_rds_bits(RDSEncoder* enc, uint8_t *bits);
 void set_rds_rt1(RDSEncoder* enc, unsigned char *rt1);