add esp32 chip manager on ESPHome for portenta C33

Author: fabik111

libraries/ESPhost/src/EspChipManager.cpp

@@ -0,0 +1,41 @@
+/* ########################################################################## */
+/* - File: EspChipManager.h
+   - Copyright (c): 2025 Arduino srl.
+   - Author: Fabio Massimo Centonze ([email protected])
+
+     This library is free software; you can redistribute it and/or
+     modify it under the terms of the GNU Lesser General Public
+     License as published by the Free Software Foundation; either
+     version 2.1 of the License, or (at your option) any later version.
+
+     This library is distributed in the hope that it will be useful,
+     but WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     Lesser General Public License for more details.
+
+     You should have received a copy of the GNU Lesser General Public
+     License along with this library; if not, write to the Free Software
+     Foundation, Inc.,51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA */
+/* ########################################################################## */
+
+#include "EspChipManager.h"
+
+#define ESP_RESET         BSP_IO_PORT_08_PIN_04
+#define DATA_READY_PIN    100
+
+CEspChipManager& CEspChipManager::getInstance() {
+    static CEspChipManager instance;
+    return instance;
+}
+
+void CEspChipManager::initialize() {
+    if (!isInitialized) {
+        R_IOPORT_PinCfg(NULL, digitalPinToBspPin(DATA_READY_PIN), (uint32_t) (IOPORT_CFG_IRQ_ENABLE | IOPORT_CFG_PORT_DIRECTION_INPUT | IOPORT_CFG_PULLUP_ENABLE));
+        R_IOPORT_PinCfg(NULL, ESP_RESET, IOPORT_CFG_PORT_DIRECTION_OUTPUT);
+        R_IOPORT_PinWrite(NULL, ESP_RESET, BSP_IO_LEVEL_HIGH);
+        R_IOPORT_PinWrite(NULL, ESP_RESET, BSP_IO_LEVEL_LOW);
+        R_IOPORT_PinWrite(NULL, ESP_RESET, BSP_IO_LEVEL_HIGH);
+        isInitialized = true;
+    }
+}
+

libraries/ESPhost/src/EspChipManager.h

@@ -0,0 +1,39 @@
+/* ########################################################################## */
+/* - File: EspChipManager.h
+   - Copyright (c): 2025 Arduino srl.
+   - Author: Fabio Massimo Centonze ([email protected])
+
+     This library is free software; you can redistribute it and/or
+     modify it under the terms of the GNU Lesser General Public
+     License as published by the Free Software Foundation; either
+     version 2.1 of the License, or (at your option) any later version.
+
+     This library is distributed in the hope that it will be useful,
+     but WITHOUT ANY WARRANTY; without even the implied warranty of
+     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+     Lesser General Public License for more details.
+
+     You should have received a copy of the GNU Lesser General Public
+     License along with this library; if not, write to the Free Software
+     Foundation, Inc.,51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA */
+/* ########################################################################## */
+
+#ifndef ESP_CHIP_MANAGER_H
+#define ESP_CHIP_MANAGER_H
+#include <Arduino.h>
+
+class CEspChipManager {
+   public:
+      static CEspChipManager& getInstance();
+
+      // Delete copy constructor and assignment operator to enforce singleton
+      CEspChipManager(const CEspChipManager&) = delete;
+      CEspChipManager& operator=(const CEspChipManager&) = delete;
+      // General initialization
+      void initialize();
+   private:
+      CEspChipManager() = default;
+      ~CEspChipManager() = default;
+      bool isInitialized = false;
+};
+#endif // ESP_CHIP_MANAGER_H

libraries/ESPhost/src/EspSpiDriver.cpp

@@ -29,6 +29,7 @@
  * ######## */
 
 #include "EspSpiDriver.h"
+#include "EspChipManager.h"
 
 /* #####################
  * Configuration defines 
@@ -58,7 +59,6 @@
 #define ESP_CS     BSP_IO_PORT_01_PIN_03 
 #else
 /* GPIOs */
-#define ESP_RESET         BSP_IO_PORT_08_PIN_04
 #define HANDSHAKE         BSP_IO_PORT_08_PIN_06  
 #define DATA_READY        BSP_IO_PORT_08_PIN_03
 #define DATA_READY_PIN    100
@@ -157,15 +157,11 @@ int esp_host_spi_init(void) {
    }
 
    /* ++++++++++++++++++++++++++++++++++
-    *  GPIOs (HANDSHAKE and DATA_READY)
+    *  GPIOs (HANDSHAKE and CS)
     * ++++++++++++++++++++++++++++++++++ */
    R_IOPORT_PinCfg(NULL, HANDSHAKE, IOPORT_CFG_PORT_DIRECTION_INPUT);
-   /* DATA READY is configure in attach interrupt function below */
    //#ifdef EXPLICIT_PIN_CONFIGURATION
-   R_IOPORT_PinCfg(NULL, DATA_READY, (uint32_t) (IOPORT_CFG_IRQ_ENABLE | IOPORT_CFG_PORT_DIRECTION_INPUT ));
-
    R_IOPORT_PinCfg(NULL, ESP_CS, IOPORT_CFG_PORT_DIRECTION_OUTPUT);
-   R_IOPORT_PinCfg(NULL, ESP_RESET, IOPORT_CFG_PORT_DIRECTION_OUTPUT);
    //#endif
 
    /* +++++
@@ -270,7 +266,7 @@ int esp_host_spi_init(void) {
       return ESP_HOSTED_SPI_DRIVER_SPI_FAIL_OPEN;
    }
 
-   R_IOPORT_PinWrite(NULL, ESP_RESET, BSP_IO_LEVEL_HIGH);
+   CEspChipManager::getInstance().initialize();
    spi_driver_initialized = true;
    return ESP_HOSTED_SPI_DRIVER_OK; 
 }