Add support for 1-wire interface for ESP32

targets/FreeRTOS/ESP32_DevKitC/nanoCLR/nanoFramework.Devices.OneWire/nf_devices_onewire_native.cpp

@@ -0,0 +1,30 @@
+//
+// Copyright (c) 2018 The nanoFramework project contributors
+// See LICENSE file in the project root for full license information.
+//
+
+#include "nf_devices_onewire_native.h"
+
+static const CLR_RT_MethodHandler method_lookup[] =
+{
+    NULL,
+    Library_nf_devices_onewire_native_nanoFramework_Devices_OneWire_OneWireController::TouchReset___BOOLEAN,
+    Library_nf_devices_onewire_native_nanoFramework_Devices_OneWire_OneWireController::TouchBit___BOOLEAN__BOOLEAN,
+    Library_nf_devices_onewire_native_nanoFramework_Devices_OneWire_OneWireController::TouchByte___U1__U1,
+    Library_nf_devices_onewire_native_nanoFramework_Devices_OneWire_OneWireController::WriteByte___U1__U1,
+    Library_nf_devices_onewire_native_nanoFramework_Devices_OneWire_OneWireController::ReadByte___U1,
+    Library_nf_devices_onewire_native_nanoFramework_Devices_OneWire_OneWireController::FindFirstDevice___BOOLEAN__BOOLEAN__BOOLEAN,
+    Library_nf_devices_onewire_native_nanoFramework_Devices_OneWire_OneWireController::FindNextDevice___BOOLEAN__BOOLEAN__BOOLEAN,
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+};
+
+const CLR_RT_NativeAssemblyData g_CLR_AssemblyNative_nanoFramework_Devices_OneWire =
+{
+    "nanoFramework.Devices.OneWire", 
+    0x4BFAF309,
+    method_lookup,
+    { 1, 0, 0, 11 }
+};

targets/FreeRTOS/ESP32_DevKitC/nanoCLR/nanoFramework.Devices.OneWire/nf_devices_onewire_native.h

@@ -0,0 +1,59 @@
+//
+// Copyright (c) 2018 The nanoFramework project contributors
+// See LICENSE file in the project root for full license information.
+//
+
+#ifndef _NF_DEVICES_ONEWIRE_NATIVE_H_
+#define _NF_DEVICES_ONEWIRE_NATIVE_H_
+
+#include <nanoCLR_Interop.h>
+#include <nanoCLR_Runtime.h>
+//#include <hal.h>
+
+struct Library_nf_devices_onewire_native_nanoFramework_Devices_OneWire_OneWireController
+{
+    static const int FIELD___syncLock = 1;
+    static const int FIELD___serialNumber = 2;
+
+    NANOCLR_NATIVE_DECLARE(TouchReset___BOOLEAN);
+    NANOCLR_NATIVE_DECLARE(TouchBit___BOOLEAN__BOOLEAN);
+    NANOCLR_NATIVE_DECLARE(TouchByte___U1__U1);
+    NANOCLR_NATIVE_DECLARE(WriteByte___U1__U1);
+    NANOCLR_NATIVE_DECLARE(ReadByte___U1);
+    NANOCLR_NATIVE_DECLARE(FindFirstDevice___BOOLEAN__BOOLEAN__BOOLEAN);
+    NANOCLR_NATIVE_DECLARE(FindNextDevice___BOOLEAN__BOOLEAN__BOOLEAN);
+
+    //--//
+
+};
+
+extern const CLR_RT_NativeAssemblyData g_CLR_AssemblyNative_nanoFramework_Devices_OneWire;
+
+// struct with parameters for 1-Wire working thread
+struct OneWireFindStruct
+{
+    bool DoReset;
+    bool AlarmOnly;
+    bool FindFirst;
+};
+
+/**
+ * @brief   Driver state machine possible states.
+ */
+typedef enum {
+  ONEWIRE_UNINIT,                /* Not initialized.                           */
+  ONEWIRE_STOP,                  /* Stopped.                                   */
+  ONEWIRE_READY,                 /* Ready.                                     */
+  ONEWIRE_ACTIVE                 /* Generating random number.                  */
+} oneWireState;
+
+//character to send on the UART to mimic 1-Wire bus signals
+#define IWIRE_WR0           0x00    // 1-Wire write 0 time slot
+#define IWIRE_WR1           0xFF    // 1-Wire write 1 time slot
+#define IWIRE_RD            0xFF    // 1-Wire read time slot
+
+// ROM commands
+#define SEARCH_ROM               0xF0    /* search ROM */
+#define COND_SEARCH_ROM          0xEC    /* conditional search ROM */
+
+#endif  //_NF_DEVICES_ONEWIRE_NATIVE_H_