esp32: replace port with PlatformIO implementation and add CI build (#1292)

ports/esp32/src/dlenv.h

@@ -0,0 +1,48 @@
+/**
+ * @file
+ * @brief BACnet MS/TP datalink environment declarations for the PlatformIO
+ * ESP32 port
+ * @author Kato Gangstad
+ */
+
+#ifndef M5STAMPLC_DLENV_H
+#define M5STAMPLC_DLENV_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "bacnet/bacdef.h"
+#include "bacnet/datalink/dlenv.h"
+#include "bacnet/datalink/dlmstp.h"
+#include "bacnet/datalink/mstp.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define BACNET_MSTP_MAX_MASTER 127
+#define BACNET_MSTP_MAX_INFO_FRAMES 1
+
+/**
+ * @brief Initialize the BACnet MS/TP datalink environment
+ * @param mac_address local MS/TP MAC address
+ * @return true if initialization succeeded
+ */
+bool m5_dlenv_init(uint8_t mac_address);
+
+/**
+ * @brief Run periodic MS/TP maintenance work
+ * @param seconds elapsed seconds since the last call
+ */
+void dlenv_maintenance_timer(uint16_t seconds);
+
+/**
+ * @brief Shut down the MS/TP datalink environment
+ */
+void dlenv_cleanup(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif