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

ports/esp32/src/bacnet_app.h

@@ -0,0 +1,69 @@
+/**
+ * @file
+ * @brief Public BACnet application hooks for the PlatformIO ESP32 port
+ * @author Kato Gangstad
+ */
+
+#ifndef M5STAMPLC_BACNET_APP_H
+#define M5STAMPLC_BACNET_APP_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Initialize the BACnet application and datalink bindings
+ */
+void bacnet_app_init(void);
+
+/**
+ * @brief Run one BACnet processing cycle
+ */
+void bacnet_app_tick(void);
+
+/**
+ * @brief Get the number of published PLC inputs
+ * @return number of PLC inputs
+ */
+uint8_t bacnet_app_input_count(void);
+
+/**
+ * @brief Get the number of published PLC relays
+ * @return number of PLC relays
+ */
+uint8_t bacnet_app_relay_count(void);
+
+/**
+ * @brief Push a PLC input state into the BACnet object model
+ * @param index zero-based input index
+ * @param active input state
+ */
+void bacnet_app_input_set(uint8_t index, bool active);
+
+/**
+ * @brief Read the requested state for a PLC relay
+ * @param index zero-based relay index
+ * @return true if the relay should be active
+ */
+bool bacnet_app_relay_get(uint8_t index);
+
+/**
+ * @brief Update the published PLC temperature value
+ * @param value_celsius temperature in degrees Celsius
+ */
+void bacnet_app_temperature_set(float value_celsius);
+
+/**
+ * @brief Update the published free heap value
+ * @param value_kb free heap in kilobytes
+ */
+void bacnet_app_free_heap_kb_set(float value_kb);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif