added drivers in own folder

7 files changed, 795 insertions, 0 deletions

diff --git a/software/drivers/AW9523B.cpp b/software/drivers/AW9523B.cpp
new file mode 100644
index 0000000..ff96f2d
--- /dev/null
+++ b/software/drivers/AW9523B.cpp
@@ -0,0 +1,338 @@
+/*
+ * AW9523B.cpp
+ *
+ *  Created on: 26.02.2022
+ *      Author: michi
+ *  SPDX-FileCopyrightText: 2022 MDC Service <info@mdc-service.de>
+ *  SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+
+
+#ifdef STM32
+   #include "stm32l4xx_hal.h"
+#else
+   #include <sys/types.h>
+   #include <stdio.h>
+   #include "driver/i2c.h"
+   #define I2C_MASTER_TIMEOUT_MS       1000
+#endif
+#include "AW9523B.hpp"
+
+
+//#include <stdint.h>
+//#include <stdbool.h>
+
+
+#define _REG(port, reg) (port == P0 ? reg : reg + 1)
+
+AW9523B *i2c_gpio;
+
+/**
+ * readI2C: read a register of the AW9523B
+ *
+ * @param reg Register to be read.
+ * @returns Value of the register.
+ * @note The STM32 code need to be removed, because V3 will not use an STM32
+ */
+
+uint8_t AW9523B::readI2C(uint8_t reg)
+{
+	//AW9523B_REG_ID
+	uint8_t gelesen = 0;	
+	uint16_t MemAddress;
+	MemAddress = reg;
+//HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+#ifdef STM32
+	HAL_StatusTypeDef ret;
+	ret = HAL_I2C_Mem_Read( &(this->i2c_handle), _addr, MemAddress, 1, &gelesen, 1, HAL_MAX_DELAY);
+     	if (ret != HAL_OK)
+#else
+	esp_err_t res1;
+	printf("I2C read I2C-Bus:%d Addr:%d Register: %d BEGIN \n", this->i2c_num, _addr, reg );
+	//res1 = i2c_master_read_from_device(this->i2c_num, _addr, /*i2c_buf*/&gelesen, 1, I2C_MASTER_TIMEOUT_MS / portTICK_RATE_MS);
+	res1 = i2c_master_write_read_device(this->i2c_num, _addr, &reg, 1, &gelesen, 2, I2C_MASTER_TIMEOUT_MS / portTICK_RATE_MS);
+	printf(" --> gelesen Byte: %d \n", gelesen );
+	if (res1 != ESP_OK)
+#endif    
+    	{ printf("ERROR I2C read I2C -------------------------- \n"); ESP_ERROR_CHECK_WITHOUT_ABORT(res1); return 0; }
+    	else {  printf(" I2C read I2C-Bus OK \n");  return gelesen; }
+}
+
+/**
+ * writeI2C: read a register of the AW9523B
+ *
+ * @param reg Register to be written.
+ * @param val Value to be written  
+ * @returns true if ok. Otherwise false
+ * @note The STM32 code need to be removed, because V3 will not use an STM32
+ */
+
+uint8_t AW9523B::writeI2C(uint8_t reg, uint8_t val)
+{
+	//AW9523B_REG_ID
+	uint16_t MemAddress;
+	MemAddress = reg;
+    //HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress,
+    //uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+#ifdef STM32    
+	HAL_StatusTypeDef ret;
+	ret = HAL_I2C_Mem_Write( &(this->i2c_handle), _addr, MemAddress, 1, &val, 1, HAL_MAX_DELAY);
+    if (ret != HAL_OK)
+#else
+	uint8_t I2C_buf[3];
+	esp_err_t res1 = ESP_OK;
+	I2C_buf[0] = reg; //0x02;	// write to register 0x02
+	I2C_buf[1] = 255;
+	I2C_buf[2] = 255;
+	//res1 = i2c_master_write_to_device(I2C_MASTER_NUM, I2C_PORTEXP1, I2C_buf, 3, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
+	//ESP_ERROR_CHECK(res1 );
+	if (res1 != ESP_OK)
+#endif    
+    { printf("ERROR I2C write I2C -------------------------- \n"); ESP_ERROR_CHECK_WITHOUT_ABORT(res1); return false; }
+    else { printf(" I2C write I2C OK \n");  return true; }
+}
+
+
+#ifdef STM32
+AW9523B::AW9523B(uint8_t address, I2C_HandleTypeDef _i2c_handle) //AD[1:0] address offset
+{
+	i2c_handle = _i2c_handle;
+	_addr = AW9523B_I2C_ADDRESS + (address & 0x03);
+#else
+AW9523B::AW9523B(uint8_t address, int _i2c_num) //AD[1:0] address offset
+{   
+    i2c_num = _i2c_num; //I2C number, 0 or 1 on ESP32 
+    _addr = 0x58;/*AW9523B_I2C_ADDRESS; 0x58 for first AW9523, 0x58 for the second */
+#endif     
+}
+
+/**
+ * begin: initialize the AW9523B
+ *
+ * @returns true if ok. Otherwise false
+ * @note The STM32 code need to be removed, because V3 will not use an STM32
+ */
+
+bool AW9523B::begin()
+{
+//    Wire.begin();
+//    return readI2C(AW9523B_REG_ID) == AW9523B_ID;
+#ifdef STM32
+	HAL_StatusTypeDef ret;
+	ret = HAL_I2C_IsDeviceReady (&i2c_handle, _addr, 1, 1000);
+    	if (ret == HAL_OK)
+#else
+	uint8_t I2C_buf[3];
+	esp_err_t res1 = ESP_OK, res2 = ESP_OK;
+	I2C_buf[0] = 0x7F;	// write to soft-RESET register on AW9523
+	I2C_buf[1] = 0x00;	// write 0 to reset the AW9523
+//	res1 = i2c_master_write_to_device(I2C_MASTER_NUM, I2C_PORTEXP1, I2C_buf, 2, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
+//	res2 = i2c_master_write_to_device(I2C_MASTER_NUM, I2C_PORTEXP2, I2C_buf, 2, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
+	printf("\nMaster wrote %d %d %02X\n", res1,res2,I2C_buf[0]);
+	
+	if ( readI2C(AW9523B_REG_ID) == AW9523B_ID )
+#endif    
+    	{
+       	return true;
+    	} else { return false; }
+}
+
+
+/**
+ * scanAllAddress: scan the I2C bus
+ *
+ * @note writes to the console
+ */
+
+void AW9523B::scanAllAddress(void)
+{
+   esp_err_t res1;
+   uint8_t gelesen = 0;
+   uint8_t reg_addr = AW9523B_REG_ID;
+   printf("Scanning I2C bus for devices:\n");
+   fflush(stdout);
+   for (int i=0; i<255; i++)
+   {
+       //i2c_master_write_read_device(I2C_MASTER_NUM, slave_addr, &reg_addr,      1, data,     2, I2C_MASTER_TIMEOUT_MS / portTICK_RATE_MS);
+       //res1 = i2c_master_read_from_device(0,        i,          AW9523B_REG_ID, 1, &gelesen, 1, I2C_MASTER_TIMEOUT_MS / portTICK_RATE_MS);
+	res1 = i2c_master_write_read_device(0,        i,	    &reg_addr, 1, &gelesen, 1, I2C_MASTER_TIMEOUT_MS / portTICK_RATE_MS);
+       if (res1 == ESP_OK) 
+       { 
+           printf("\ndevice found on I2C-address %d, read value: %d AW9523=16 \n", i, gelesen); 
+       
+       }
+       else { printf(".");  }
+       fflush(stdout);
+       gelesen = 0;
+   }
+   printf("\nfinish I2C Bus scan\n");
+}
+
+/**
+ * configInOut: configure port 0 or 1 as Input or Output
+ *
+ * @param port port to configure. Ether 0 or 1
+ * @param inout input or output, type AW9523B_P0_CONF_STATE
+ */
+
+void AW9523B::configInOut(AW9523BPort port, uint8_t inout)
+{
+    writeI2C(_REG(port, AW9523B_P0_CONF_STATE), inout);
+}
+
+/**
+ * configLedGPIO: configure port 0 or 1 as Input or Output
+ *
+ * @param port port to configure. Ether 0 or 1
+ * @param inout input or output, type AW9523B_P0_CONF_STATE
+ */
+
+void AW9523B::configLedGPIO(AW9523BPort port, uint8_t ledGpio)
+{
+    writeI2C(_REG(port, AW9523B_P0_LED_MODE), ledGpio);
+}
+
+/**
+ * setPort0Mode: set the mode of port0
+ *
+ * @param mode ether GPIO or LED
+ */
+
+void AW9523B::setPort0Mode(AW9523BPortMode mode)
+{
+    writeI2C(AW9523B_REG_GLOB_CTR, mode | ledsDim);
+}
+
+/**
+ * setLedsDim: set dim value of the LED mode
+ *
+ * @param dim dimming value
+ */
+
+void AW9523B::setLedsDim(AW9523BLedsDim dim)
+{
+    writeI2C(AW9523B_REG_GLOB_CTR, dim | portMode);
+}
+
+/**
+ * setLed: set dim value of the LED mode
+ *
+ * @param led number of LED to set
+ * @param value dimming value of the LED
+ */
+
+
+void AW9523B::setLed(AW9523BLedDimCtrl led, uint8_t value)
+{
+    writeI2C(led, value);
+}
+
+/**
+ * portIn: set port 0 or 1 as input 
+ *
+ * @param port number of port to read. Ether 0 or 1
+ */
+
+void AW9523B::portIn(AW9523BPort port)
+{
+    _portIn = _REG(port, AW9523B_P0_IN_STATE);
+}
+
+/**
+ * portOut:set port 0 or 1 as output 
+ *
+ * @param port number of port to write. Ether 0 or 1
+ */
+
+void AW9523B::portOut(AW9523BPort port)
+{
+    _portOut = _REG(port, AW9523B_P0_OUT_STATE);
+}
+
+/**
+ * read: read from port 
+ *
+ * @param port number of port to read. Use the previous set _portIn.
+ * @returns the value read as Byte
+ */
+
+uint8_t AW9523B::read()
+{
+    return readI2C(_portIn);
+}
+
+/**
+ * read: read from port 0 or 1 
+ *
+ * @param port number of port to read. Ether 0 or 1
+ * @returns the value read as Byte
+ */
+
+uint8_t AW9523B::read(AW9523BPort port)
+{
+    return readI2C(AW9523B_P0_IN_STATE + port);
+}
+
+/**
+ * read: write to port
+ *
+ * @param data value to be written to the port, previously set by _portOut.
+ * @returns the value read as Byte
+ */
+
+uint8_t AW9523B::write(uint8_t data)
+{
+    return writeI2C(_portOut, data);
+}
+
+/**
+ * write: write to port
+ *
+ * @param port the port to write, ether 0 or 1
+ * @param data value to be written to the port.
+ * @returns the value read as Byte
+ */
+
+uint8_t AW9523B::write(AW9523BPort port, uint8_t data)
+{
+    return writeI2C(AW9523B_P0_OUT_STATE + port, data);
+}
+
+
+/**
+ * reset: software reset of the AW9523B
+ *
+ * @note remove the STM32 code
+ */
+
+void AW9523B::reset()
+{
+    writeI2C(AW9523B_REG_SOFT_RST, 0);
+}
+
+#ifdef STM32
+  extern "C" bool AW9523B_init(uint8_t address, I2C_HandleTypeDef _i2c_handle)
+  {
+	i2c_gpio = new AW9523B(address, _i2c_handle);
+	if (!i2c_gpio->begin() )
+	{
+	    //Serial.println("Error: AW9523B not found!");
+	    return false;
+	} else
+	{
+		i2c_gpio->reset();
+		i2c_gpio->setPort0Mode(PUSH_PULL);
+		return true;
+	}
+  }
+  extern "C" void AW9523B_destroy(void)
+  {
+	delete i2c_gpio;
+  }
+  extern "C" void AW9523B_setAllOutputHigh(void)
+  {
+	i2c_gpio->write(P0, 255);
+	i2c_gpio->write(P1, 255);
+  }
+#endif
diff --git a/software/drivers/AW9523B.hpp b/software/drivers/AW9523B.hpp
new file mode 100644
index 0000000..bf6d1df
--- /dev/null
+++ b/software/drivers/AW9523B.hpp
@@ -0,0 +1,150 @@
+/*
+ * AW9523B.h
+ *
+ *  Created on: 26.02.2022
+ *      Author: michi
+ *  SPDX-FileCopyrightText: 2022 MDC Service <info@mdc-service.de>
+ *  SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#ifndef _AW9523B_H_
+#define _AW9523B_H_
+
+//#include <Arduino.h>
+//#include <stdint.h>
+//#include <stdbool.h>
+
+#ifdef STM32
+   #include "stm32l4xx_hal.h"
+#endif
+
+
+/** Registers */
+#define AW9523B_I2C_ADDRESS 0x58   ///< I2C base address for AW9523B
+#define AW9523B_REG_ID 0x10        ///< id register
+#define AW9523B_ID 0x23            ///< id value
+#define AW9523B_P0_IN_STATE 0x00   ///< P0 port input state
+#define AW9523B_P1_IN_STATE 0x01   ///< P1 port input state
+#define AW9523B_P0_OUT_STATE 0x02  ///< P0 port output state
+#define AW9523B_P1_OUT_STATE 0x03  ///< P1 port output state
+#define AW9523B_P0_CONF_STATE 0x04 ///< P0 port config state
+#define AW9523B_P1_CONF_STATE 0x05 ///< P1 port config state
+#define AW9523B_REG_GLOB_CTR 0x11  ///< Global control register
+#define AW9523B_P0_LED_MODE 0x12   ///< P0 port led mode switch register
+#define AW9523B_P1_LED_MODE 0x13   ///< P1 port led mode switch register
+#define AW9523B_REG_SOFT_RST 0x7F  ///< Soft reset register
+
+
+
+/** AW9523B Port constants */
+enum AW9523BPort
+{
+    P0 = 0x00, // Port 0
+    P1 = 0x01, // Port 1
+};
+
+enum AW9523BPortMode
+{
+    OPEN_DRAIN = 0x00, // Port 0 open drain mode
+    PUSH_PULL = 1 << 4 // Port 0 push pull mode
+};
+
+/** AW9523B Port0 LED dimmer constants: 256 step dimming range select*/
+enum AW9523BLedsDim
+{
+    DIM_MAX = 0x00,//B00, // 0~IMAX 37mA(typical)
+    DIM_MED = 0x01,//B01, // 0~(IMAX×3/4)
+    DIM_LOW = 0x02,//B10, // 0~(IMAX×2/4)
+    DIM_MIN = 0x03,//B11, // 0~(IMAX×1/4)
+};
+
+/** AW9523B LED dimm current control registers*/
+enum AW9523BLedDimCtrl
+{
+    P1_0 = 0x20, // DIM0
+    P1_1 = 0x21, // DIM1
+    P1_2 = 0x22, // DIM2
+    P1_3 = 0x23, // DIM3
+    P0_0 = 0x24, // DIM4
+    P0_1 = 0x25, // DIM5
+    P0_2 = 0x26, // DIM6
+    P0_3 = 0x27, // DIM7
+    P0_4 = 0x28, // DIM8
+    P0_5 = 0x29, // DIM9
+    P0_6 = 0x2A, // DIM10
+    P0_7 = 0x2B, // DIM11
+    P1_4 = 0x2C, // DIM12
+    P1_5 = 0x2D, // DIM13
+    P1_6 = 0x2E, // DIM14
+    P1_7 = 0x2F, // DIM15
+};
+
+// Uncomment to enable debug messages
+//#define AW9523B_DEBUG
+
+// Define where debug output will be printed
+#define DEBUG_PRINTER Serial
+
+// Setup debug printing macros
+#ifdef AW9523B_DEBUG
+#define DEBUG_PRINT(...)                  \
+    {                                     \
+        DEBUG_PRINTER.print(__VA_ARGS__); \
+    }
+#define DEBUG_PRINTLN(...)                  \
+    {                                       \
+        DEBUG_PRINTER.println(__VA_ARGS__); \
+    }
+#else
+#define DEBUG_PRINT(...) \
+    {                    \
+    }
+#define DEBUG_PRINTLN(...) \
+    {                      \
+    }
+#endif
+
+/**************************************************************************/
+/*!
+    @brief  AW9523B I2C 16bit GPIO expander and LED driver
+*/
+/**************************************************************************/
+class AW9523B
+{
+
+public:
+#ifdef STM32
+    AW9523B(uint8_t address, I2C_HandleTypeDef _i2c_handle); //AD[1:0] address offset
+#else
+    AW9523B(uint8_t address, int _i2c_num); //AD[1:0] address offset
+#endif    
+    bool begin();
+    void configInOut(AW9523BPort port, uint8_t inout);
+    void configLedGPIO(AW9523BPort port, uint8_t ledGpio);
+    void setPort0Mode(AW9523BPortMode mode);
+    void setLedsDim(AW9523BLedsDim value);
+    void setLed(AW9523BLedDimCtrl led, uint8_t value);
+    void portIn(AW9523BPort port);
+    void portOut(AW9523BPort port);
+    uint8_t read();
+    uint8_t read(AW9523BPort port);
+    uint8_t write(uint8_t data);
+    uint8_t write(AW9523BPort port, uint8_t data);
+    void reset();
+    void scanAllAddress(void);
+private:
+    uint8_t writeI2C(uint8_t reg, uint8_t val);
+    uint8_t readI2C(uint8_t reg);
+    uint8_t _addr;
+    uint8_t _portIn = AW9523B_P0_IN_STATE;
+    uint8_t _portOut = AW9523B_P0_OUT_STATE;
+    AW9523BPortMode portMode = OPEN_DRAIN;
+    AW9523BLedsDim ledsDim = DIM_MAX;
+#ifdef STM32    
+    I2C_HandleTypeDef i2c_handle;//Michi
+#else
+    /*i2c_port_t*/int i2c_num;    
+#endif    
+};
+
+#endif // _AW9523B_H_
diff --git a/software/drivers/board_rev_A.cpp b/software/drivers/board_rev_A.cpp
new file mode 100644
index 0000000..29aa81d
--- /dev/null
+++ b/software/drivers/board_rev_A.cpp
@@ -0,0 +1,53 @@
+/*
+ * board_rev_A.cpp
+ *
+ *  Created on: 26.02.2022
+ *      Author: michi
+ *  SPDX-FileCopyrightText: 2022 MDC Service <info@mdc-service.de>
+ *  SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/queue.h"
+#include "driver/gpio.h"
+#include "schrank_ant_pcb.h" //contains setting of board revision
+
+#ifndef ESP32_BOARD_REV_B
+
+/**
+ * io_init: initialize Rev. A board
+ *
+ */
+
+void io_init(void)
+{
+
+#define GPO_BIT_MASK (1ULL << PHY_PWR)
+	gpio_config_t o_conf;
+	o_conf.intr_type = GPIO_INTR_DISABLE;
+	o_conf.mode = GPIO_MODE_OUTPUT;
+	o_conf.pin_bit_mask = GPO_BIT_MASK;
+	o_conf.pull_down_en = GPIO_PULLDOWN_ENABLE;
+	o_conf.pull_up_en = GPIO_PULLUP_DISABLE;
+	gpio_config(&o_conf);
+	gpio_set_level((gpio_num_t) PHY_PWR, 1);
+
+	// inputs
+	/*
+	 #define GPI_BIT_MASK ((1ULL << SWITCH)|(1ULL << SWITCH))
+	 gpio_config_t i_conf;
+	 i_conf.intr_type = GPIO_INTR_DISABLE;
+	 i_conf.mode = GPIO_MODE_INPUT;
+	 i_conf.pin_bit_mask = GPI_BIT_MASK;
+	 i_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
+	 i_conf.pull_up_en = GPIO_PULLUP_DISABLE;
+	 gpio_config(&i_conf);
+	 */
+}
+
+#endif
diff --git a/software/drivers/board_rev_A.hpp b/software/drivers/board_rev_A.hpp
new file mode 100644
index 0000000..9c359cc
--- /dev/null
+++ b/software/drivers/board_rev_A.hpp
@@ -0,0 +1,61 @@
+/*
+ * board_rev_A.hpp
+ *
+ *  Created on: 26.02.2022
+ *      Author: michi
+ *  SPDX-FileCopyrightText: 2022 MDC Service <info@mdc-service.de>
+ *  SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+
+
+
+#ifndef _BOARD_REV_A_H_
+#define _BOARD_REV_A_H_
+
+#include "schrank_ant_pcb.h" //contains setting of board revision
+
+//board definitions for Rev A board (LAN8720 module)
+
+//    +3,3V              				// Pin 1
+//    GND                				// Pin 2
+//    ESP_EN              				// Pin 3
+#define UHF_RXD_MISO  		36  		// pin 4	UART
+#define LCD_RXD_MISO  		39  		// pin 5	UART
+// NC pin 6
+#define I2Cint				35	  		// pin 7	EXP
+//#define SCL			  		33 			// pin 8	EXP disabled Michi, all boards have SCL on 32
+//#define SDA			  		32 			// pin 9	EXP disabled Michi, all boards have SDA on 33
+#define SCL			  		32 //new Michi 01.05.2022
+#define SDA			  		33 //new Michi 01.05.2022
+#define EMAC_RXD0_RMII 		25 			// pin 10   ETH
+#define EMAC_RXD1_RMII  	26  		// pin 11   ETH
+#define EMAC_RX_CRS_DV  	27  		// pin 12   ETH
+#define HS2_CLK  			14  		// pin 13   ETH
+#define PHY_PWR  			12  		// pin 14   ETH
+//  									// pin 15	GND
+#define I2C_SDA_40p			13  		// pin 16	40p
+// NC pin 17 bis 22
+#define HS2_CMD  			15  		// pin 23   ETH
+#define HS2_DATA0  			02  		// pin 24   ETH
+#define ETH_CLKREF 			0 			// pin 25   ETH
+#define UHF_TXD_MOSI 		04  		// pin 26	UART
+#define LCD_TXD_MOSI 		16  		// pin 27	UART
+#define EMAC_CLK_OUT_180  	17 			// pin 28   ETH
+#define SPI_CS  			05  		// pin 29	40p
+#define MDIO_RMII  			18			// pin 30	ETH
+#define EMAC_TXD0_RMII		19  		// pin 31	ETH
+//NC pin 32
+#define EMAC_TX_EN_RMII  	21  		// pin 33	ETH
+#define RDR_RXD_MISO  		03  		// pin 34	UART
+#define RDR_TXD_MOSI  		01  		// pin 35	UART
+#define EMAC_TXD1_RMII  	22  		// pin 36	ETH
+#define MDC_RMII  			23			// pin 37	ETH
+//GND pin 38, 39
+#define I2C_PORTEXP					0x22
+
+
+void io_init(void);
+
+#endif
+
diff --git a/software/drivers/board_rev_B.cpp b/software/drivers/board_rev_B.cpp
new file mode 100644
index 0000000..da2b00e
--- /dev/null
+++ b/software/drivers/board_rev_B.cpp
@@ -0,0 +1,117 @@
+/*
+ * board_rev_B.cpp
+ *
+ *  Created on: 26.02.2022
+ *      Author: michi
+ *  SPDX-FileCopyrightText: 2022 MDC Service <info@mdc-service.de>
+ *  SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+#include "freertos/queue.h"
+#include "driver/gpio.h"
+#include "driver/i2c.h"
+#include "schrank_ant_pcb.h" //contains setting of board revision
+
+#ifdef ESP32_BOARD_REV_B
+#include "board_rev_B.hpp"
+
+/**
+ * io_init: initalize Rev. B boards
+ *
+ */
+
+void io_init(void)
+{
+	#define GPO_BIT_MASK 0 //we dont have GPIO as outputs, all output is done via I2C Port Expander
+/* as we have not ouput, leave default settings
+	gpio_config_t o_conf;
+	o_conf.intr_type = GPIO_INTR_DISABLE;
+	o_conf.mode = GPIO_MODE_OUTPUT;
+	o_conf.pin_bit_mask = GPO_BIT_MASK;
+	o_conf.pull_down_en = GPIO_PULLDOWN_ENABLE;
+	o_conf.pull_up_en = GPIO_PULLUP_DISABLE;
+	gpio_config(&o_conf);
+*/	
+	//gpio_set_level((gpio_num_t) PHY_PWR, 1);
+
+	// inputs
+
+	#define IRQ2Esp 34
+	#define I2Cext_INT 35
+	 #define GPI_BIT_MASK ((1ULL<<IRQ2Esp) | (1ULL<<I2Cext_INT)) 
+	 //io_conf.pin_bit_mask = (1ULL<<15);//bit mask of the pins that you want to set,e.g.GPIO15
+	 gpio_config_t i_conf;
+	 i_conf.intr_type = GPIO_INTR_DISABLE;
+	 i_conf.mode = GPIO_MODE_INPUT;
+	 i_conf.pin_bit_mask = GPI_BIT_MASK;
+	 i_conf.pull_down_en = GPIO_PULLDOWN_DISABLE;
+	 i_conf.pull_up_en = GPIO_PULLUP_DISABLE;
+	 gpio_config(&i_conf);
+	 
+}
+
+
+
+
+esp_err_t i2c_init(void) {	
+	int res1,res2;
+	int I2C_master_port = I2C_MASTER_NUM;
+	uint8_t I2C_buf[5];
+	i2c_config_t I2C_conf = { .mode = I2C_MODE_MASTER, .sda_io_num = I2C_MASTER_SDA_IO, .scl_io_num = I2C_MASTER_SCL_IO, .sda_pullup_en = GPIO_PULLUP_ENABLE, .scl_pullup_en = GPIO_PULLUP_ENABLE, .master { .clk_speed = I2C_MASTER_FREQ_HZ, } };
+	i2c_param_config(I2C_master_port, &I2C_conf);
+		
+	printf("\nInstall i2c_driver: Mode=%d sda_io_num=%d scl_io_num=%d\n", I2C_MODE_MASTER, I2C_MASTER_SDA_IO, I2C_MASTER_SCL_IO);
+	res1=i2c_driver_install(I2C_master_port, I2C_conf.mode,
+	I2C_MASTER_RX_BUF_DISABLE, I2C_MASTER_TX_BUF_DISABLE, 0);	
+	ESP_ERROR_CHECK_WITHOUT_ABORT(res1);
+	printf("After i2c_driver_install\n");
+	vTaskDelay(500 / portTICK_PERIOD_MS);
+
+//1. Init AW9523 on address 0x00
+	I2C_buf[0] = 0x7F;	// write to AW9523 Soft Reset register
+	I2C_buf[1] = 0x00;	// write data to output port 1
+	I2C_buf[2] = 0x00;	// write data to output port 1
+	printf("I2C write to bus %d to I2C-Adress %d byte0 = %d byte 1 = %d\n", I2C_MASTER_NUM, I2C_PORTEXP1, I2C_buf[0], I2C_buf[1] );
+	res1 = i2c_master_write_to_device(I2C_MASTER_NUM, I2C_PORTEXP1, I2C_buf, 3, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
+	printf("I2C write to bus %d to I2C-Adress %d byte0 = %d byte 1 = %d\n", I2C_MASTER_NUM, I2C_PORTEXP2, I2C_buf[0], I2C_buf[1] );
+	res2 = i2c_master_write_to_device(I2C_MASTER_NUM, I2C_PORTEXP2, I2C_buf, 3, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
+	printf("\nMaster wrote %d %d %02X\n", res1,res2,I2C_buf[0]);
+	printf("After AW9523 soft-RESET\n");
+	vTaskDelay(500 / portTICK_PERIOD_MS);
+
+//2. Set outputs push pull in AW9523 Global Control Register	
+	I2C_buf[0] = 0x11;	// write data to Global Control Register
+	I2C_buf[1] = 0x10;	// write data to Global Control Register, set Bit4 to Push Pull
+	res1 = i2c_master_write_to_device(I2C_MASTER_NUM, I2C_PORTEXP1, I2C_buf, 2, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
+	res2 = i2c_master_write_to_device(I2C_MASTER_NUM, I2C_PORTEXP2, I2C_buf, 2, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
+	printf("\nMaster wrote %d %d %02X\n", res1,res2,I2C_buf[0]);		
+
+	I2C_buf[0] = 0x02;	// write data to output port 1
+	I2C_buf[1] = 0xFF;	// write data to output port 1
+	I2C_buf[2] = 0xFF;	// write data to output port 1
+	I2C_buf[3] = 0x00;	// write data to output port 1
+	I2C_buf[4] = 0x00;	// write data to output port 1
+	res1 = i2c_master_write_to_device(I2C_MASTER_NUM, I2C_PORTEXP1, I2C_buf, 5, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
+	res2 = i2c_master_write_to_device(I2C_MASTER_NUM, I2C_PORTEXP2, I2C_buf, 5, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);
+	printf("\nMaster wrote %d %d %02X\n", res1,res2,I2C_buf[0]);
+	printf("After AW9523 all GPIOs HIGH\n");
+	vTaskDelay(500 / portTICK_PERIOD_MS);
+
+
+	
+//2. Set AW9523-PhyPower to high	
+/*	I2C_buf[0] = 0x02;	// write to register 0x02
+	I2C_buf[1] = 255;	// set all pins high
+	I2C_buf[2] = 255;	// set all pins high
+	res1 = i2c_master_write_to_device(I2C_MASTER_NUM, I2C_PORTEXP2, I2C_buf, 3, I2C_MASTER_TIMEOUT_MS / portTICK_PERIOD_MS);	
+*/	
+	return res1;
+}
+
+#endif
diff --git a/software/drivers/board_rev_B.hpp b/software/drivers/board_rev_B.hpp
new file mode 100644
index 0000000..d890fef
--- /dev/null
+++ b/software/drivers/board_rev_B.hpp
@@ -0,0 +1,72 @@
+/*
+ * board_rev_B.hpp
+ *
+ *  Created on: 26.02.2022
+ *      Author: michi
+ *  SPDX-FileCopyrightText: 2022 MDC Service <info@mdc-service.de>
+ *  SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#ifndef _BOARD_REV_B_H_
+#define _BOARD_REV_B_H_
+
+//board definitions for Rev B board (LAN8720 on board)
+#include "schrank_ant_pcb.h" //contains setting of board revision
+
+
+#define UHF_RXD_MISO  		36  		// pin 4	UART
+#define LCD_RXD_MISO  		39  		// pin 5	UART
+
+#define SCL			  	32 //new Michi 01.05.2022
+#define SDA			  	33 //new Michi 01.05.2022
+
+
+#define I2C_MASTER_SCL_IO		SCL
+#define I2C_MASTER_SDA_IO           	SDA
+#define I2C_MASTER_NUM              	0                          /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
+#define I2C_MASTER_FREQ_HZ          	100000                     /*!< I2C master clock frequency */
+#define I2C_MASTER_TX_BUF_DISABLE   	0                          /*!< I2C master doesn't need buffer */
+#define I2C_MASTER_RX_BUF_DISABLE   	0                          /*!< I2C master doesn't need buffer */
+#define I2C_MASTER_TIMEOUT_MS       	1000
+#define I2C_PORTEXP			0x22
+#define I2Cint				35	
+#define EMAC_RXD0_RMII 		25 			// pin 10   ETH
+#define EMAC_RXD1_RMII  		26  		// pin 11   ETH  
+#define EMAC_RX_CRS_DV  		27 	
+#define HS2_CLK  			14     
+//#define PHY_PWR is in Rev B handled by I2C port expander, no longer a GPIO
+//#define I2C_SDA_40p			13  // the I2C to the RasPi 40 port header is switched with the second port expander 
+#define HS2_CMD  			15 
+#define HS2_DATA0  			02  
+#define ETH_CLKREF 			0 
+#define UHF_TXD_MOSI 			04 
+#define LCD_TXD_MOSI 			5
+//#define EMAC_CLK_OUT_180  	17 // there is no GPIO17 on the WROVER module
+#define SPI_CS  			13// was: 05
+#define MDIO_RMII  			18
+#define EMAC_TXD0_RMII			19
+#define EMAC_TX_EN_RMII  		21
+#define RDR_RXD_MISO  			03 
+#define RDR_TXD_MOSI  			01
+#define EMAC_TXD1_RMII  		22
+#define MDC_RMII  			23
+//#define I2C_PORTEXP			0x22 
+
+#define I2C_MASTER_NUM              0                          /*!< I2C master i2c port number, the number of i2c peripheral interfaces available will depend on the chip */
+  
+// AW9523 I2C adress P40 1011000 = 88, 0x58
+// AW9523 I2C adress 10110 AD1 AD0 RW	
+//#define AW9523B_I2C_ADDRESS_MAIN 88 //0x58
+#define AW9523B_I2C_ADDRESS_MAIN 	0x58
+	
+// AW9523 I2C adress P40 10110100 = 90, 0x5A	
+#define AW9523B_I2C_ADDRESS_ETH  	0x5A //90dec   
+#define I2C_PORTEXP1			0x58
+#define I2C_PORTEXP2			0x5A
+
+void io_init(void);   	 
+esp_err_t i2c_init(void);
+void kolban_i2cscanner(void ); 
+
+#endif
+
diff --git a/software/drivers/component.mk b/software/drivers/component.mk
new file mode 100644
index 0000000..a98f634
--- /dev/null
+++ b/software/drivers/component.mk
@@ -0,0 +1,4 @@
+#
+# "main" pseudo-component makefile.
+#
+# (Uses default behaviour of compiling all source files in directory, adding 'include' to include path.)