I2C PWM expander added from different Project

2024-11-16 16:42:29 +01:00
parent deccb3186c
commit f6608075ff
7 changed files with 327 additions and 0 deletions
@@ -0,0 +1,50 @@
+/**
+ * @file i2cPort.hpp
+ * @author Gustice
+ * @brief C++ Wrapper for I2C-interface
+ *
+ * @copyright Copyright (c) 2024
+ */
+
+#pragma once
+
+#include "driver/gpio.h"
+#include "driver/i2c_master.h"
+#include "portBase.hpp"
+#include <vector>
+
+/**
+ * @brief I2C-Master Class
+ * @details More recent implementation of IDF-based I2C master
+ */
+class I2cMaster : public PortBase {
+  public:
+    class Slave {
+      public:
+        enum ClockRate {
+            _100k = 100000,
+            _400k = 400000,
+        };
+
+        Slave(I2cMaster &interface, uint8_t addr, ClockRate rate = _100k);
+        ~Slave();
+        bool writeTo(const std::vector<uint8_t> &data);
+        std::vector<uint8_t> readFrom(const std::vector<uint8_t> &address, unsigned size);
+
+      protected:
+        const uint8_t Addr;
+        I2cMaster &Interface;
+        i2c_master_dev_handle_t _devHandle;
+    };
+
+    I2cMaster(i2c_port_t port, gpio_num_t sda, gpio_num_t scl);
+    ~I2cMaster() = default;
+
+    bool probe(uint8_t addr);
+
+    const i2c_port_t Port;
+
+  private:
+    friend class Slave;
+    i2c_master_bus_handle_t _busHandle;
+};