Initial checkin of empty MCP9808 driver

src/mgos_mcp9808_internal.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include "mgos.h"
+#include "mgos_i2c.h"
+#include "mgos_mcp9808.h"
+#include <math.h>
+
+#define MGOS_MCP9808_DEFAULT_I2CADDR       (0x18)
+
+#define MGOS_MCP9808_MEAS_HIGHREP_STRETCH  (0x2C06)
+#define MGOS_MCP9808_MEAS_MEDREP_STRETCH   (0x2C0D)
+#define MGOS_MCP9808_MEAS_LOWREP_STRETCH   (0x2C10)
+#define MGOS_MCP9808_MEAS_HIGHREP          (0x2400)
+#define MGOS_MCP9808_MEAS_MEDREP           (0x240B)
+#define MGOS_MCP9808_MEAS_LOWREP           (0x2416)
+#define MGOS_MCP9808_READSTATUS            (0xF32D)
+#define MGOS_MCP9808_CLEARSTATUS           (0x3041)
+#define MGOS_MCP9808_SOFTRESET             (0x30A2)
+#define MGOS_MCP9808_HEATEREN              (0x306D)
+#define MGOS_MCP9808_HEATERDIS             (0x3066)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct mgos_mcp9808 {
+  struct mgos_i2c *i2c;
+  uint8_t i2caddr;
+  double last_read_time;
+
+  float temperature;
+};
+
+#ifdef __cplusplus
+}
+#endif