Adjusted mutex lock and delay for modbus

src/remoteIO.h

@@ -8,9 +8,21 @@
 class remoteIO
 {
 public:
-    typedef enum {CH1, CH2, CH3, CH4, CH5, CH6, CH7, CH8, CH_MAX} channel_t;
+    typedef enum
+    {
+        CH1,
+        CH2,
+        CH3,
+        CH4,
+        CH5,
+        CH6,
+        CH7,
+        CH8,
+        CH_MAX
+    } channel_t;
 
 private:
+    const uint32_t c_minDelay = 100;
     const uint16_t REG_VERSION = 0x8000;
     const uint16_t REG_COILS = 0x0000;
     const uint16_t REG_INPUT = 0x0000;
@@ -32,8 +44,12 @@ public:
 
     void resetAll(const bool value);
 
+private:
+    void delayRequest();
+
 private:
     bool m_initialized;
     drivers::MODBUS &m_bus;
     const uint8_t m_address;
+    uint32_t m_lastRequest;
 };