More transformation to C++

src/hal/hal_esp32.h

@@ -14,33 +14,81 @@
 #define _hal_esp32_h_
 
 #include <stdint.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/queue.h>
 #include "driver/spi_master.h"
 
-#ifdef __cplusplus
 extern "C" {
-#endif
 
-typedef struct lmic_pinmap {
-    spi_host_device_t spi_host;
-    uint8_t nss;
-    uint8_t rxtx;
-    uint8_t rst;
-    uint8_t dio0;
-    uint8_t dio1;
-    int8_t rssi_cal; // cal in dB -- added to RSSI measured prior to decision. Must include noise guardband!
-} lmic_pinmap;
+    typedef struct lmic_pinmap {
+        spi_host_device_t spi_host;
+        uint8_t nss;
+        uint8_t rxtx;
+        uint8_t rst;
+        uint8_t dio0;
+        uint8_t dio1;
+        int8_t rssi_cal; // cal in dB -- added to RSSI measured prior to decision. Must include noise guardband!
+    } lmic_pinmap;
 
-extern lmic_pinmap lmic_pins;
+    extern lmic_pinmap lmic_pins;
 
-void hal_startBgTask();
-void hal_wakeUp();
-void hal_initCriticalSection();
-void hal_enterCriticalSection();
-void hal_leaveCriticalSection();
-
-
-#ifdef __cplusplus
 }
-#endif
+
+
+enum HAL_Event {
+    DIO0 = 0,
+    DIO1,
+    DIO2,
+    TIMER,
+    WAKEUP
+};
+
+
+enum WaitKind {
+    CHECK_IO,
+    WAIT_FOR_ANY_EVENT,
+    WAIT_FOR_TIMER
+};
+
+
+
+class HAL_ESP32
+{
+public:
+    HAL_ESP32();
+
+    void init();
+    void startBackgroundTask();
+    void wakeUp();
+    void initCriticalSection();
+    void enterCriticalSection();
+    void leaveCriticalSection();
+    void spiWrite(uint8_t cmd, const uint8_t *buf, int len);
+    void spiRead(uint8_t cmd, uint8_t *buf, int len);
+    uint8_t checkTimer(uint32_t time);
+    void sleep();
+    void waitUntil(uint32_t time);
+
+private:
+    static void backgroundTask(void* pvParameter);
+    static void dioIrqHandler(void* arg);
+    void ioInit();
+    void spiInit();
+    void timerInit();
+    void prepareNextAlarm(uint32_t time);
+    void armTimer();
+    void disarmTimer();
+    static void IRAM_ATTR timerIrqHandler(void *arg);
+    bool wait(WaitKind waitKind);
+
+    QueueHandle_t dioQueue;
+    spi_device_handle_t spiHandle;
+    spi_transaction_t spiTransaction;
+    uint64_t nextTimerEvent;
+    SemaphoreHandle_t mutex;
+};
+
+extern HAL_ESP32 ttn_hal;
+
 
 #endif // _hal_esp32_h_