Modbus RTU - Multi Devices

main/config_store.h

@@ -0,0 +1,53 @@
+#ifndef CONFIG_STORE_H
+#define CONFIG_STORE_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+#define DEVICE_NAME_MAX_LEN      32
+#define DEVICE_CSV_MAX_LEN       64
+#define MAX_VIRTUAL_DEVICES      3
+
+typedef enum
+{
+    MB_RTU_PARITY_NONE = 0,
+    MB_RTU_PARITY_EVEN,
+    MB_RTU_PARITY_ODD
+} modbus_rtu_parity_t;
+
+typedef struct
+{
+    uint32_t baud_rate;
+    modbus_rtu_parity_t parity;
+    uint8_t stop_bits;      /* 1 or 2 */
+    uint8_t uart_num;       /* UART_NUM_0/1/2 as integer */
+    int tx_pin;
+    int rx_pin;
+    int de_pin;             /* -1 if unused / auto-direction shield */
+} modbus_rtu_settings_t;
+
+typedef struct
+{
+    uint8_t device_count;
+} modbus_settings_t;
+
+typedef struct
+{
+    bool enabled;
+    uint8_t unit_id;
+    char name[DEVICE_NAME_MAX_LEN];
+    char csv[DEVICE_CSV_MAX_LEN];
+} virtual_device_settings_t;
+
+typedef struct
+{
+    modbus_rtu_settings_t rtu;
+    modbus_settings_t modbus;
+    virtual_device_settings_t devices[MAX_VIRTUAL_DEVICES];
+} device_config_t;
+
+void config_store_set_defaults(device_config_t *cfg);
+bool config_store_load(const char *filename, device_config_t *cfg);
+
+#endif /* CONFIG_STORE_H */