Add Wemos DC mottor shild (v1.0.0) support

I2CDEVICES.md

@@ -65,3 +65,4 @@ Index | Define              | Driver  | Device   | Address(es) | Description
   42  | USE_DS1624          | xsns_59 | DS1621   | 0x48 - 0x4F | Temperature sensor
   42  | USE_DS1624          | xsns_59 | DS1624   | 0x48 - 0x4F | Temperature sensor
   43  | USE_AHT1x           | xsns_63 | AHT10/15 | 0x38        | Temperature and humidity sensor
+  44  | USE_WEMOS_MOTOR_V1  | xdrv_34 |          | 0x2D - 0x30 | WEMOS motor shield v1.0.0 (6612FNG)

tasmota/my_user_config.h

@@ -502,6 +502,9 @@
       #define MTX_ADDRESS7     0x00              // [DisplayAddress7] I2C address of seventh 8x8 matrix module
       #define MTX_ADDRESS8     0x00              // [DisplayAddress8] I2C address of eigth 8x8 matrix module
 //    #define USE_DISPLAY_SH1106                   // [DisplayModel 7] [I2cDriver6] Enable SH1106 Oled 128x64 display (I2C addresses 0x3C and 0x3D)
+//  #define USE_WEMOS_MOTOR_V1
+    #define USE_WEMOS_MOTOR_V1_ADDR  0x30
+    #define USE_WEMOS_MOTOR_V1_FREQ  1000
 #endif  // USE_I2C
 
 // -- SPI sensors ---------------------------------

tasmota/support_features.ino

@@ -516,7 +516,10 @@ void GetFeatures(void)
 #ifdef USE_AHT1x
   feature5 |= 0x10000000;  // xsns_63_aht1x.ino
 #endif
-//  feature5 |= 0x20000000;
+#ifdef USE_WEMOS_MOTOR_V1
+  feature5 |= 0x20000000;  // xdrv_34_wemos_motor_v1.ino
+#endif
+
 //  feature5 |= 0x40000000;
 //  feature5 |= 0x80000000;
 

tasmota/tasmota_post.h

@@ -223,6 +223,9 @@ extern "C" void custom_crash_callback(struct rst_info * rst_info, uint32_t stack
 //#define USE_ARDUINO_SLAVE                        // Add support for Arduino Uno/Pro Mini via serial interface including flashing (+2k3 code, 44 mem)
 #undef DEBUG_THEO                                // Disable debug code
 #undef USE_DEBUG_DRIVER                          // Disable debug code
+#define USE_WEMOS_MOTOR_V1
+  #define USE_WEMOS_MOTOR_V1_ADDR  0x30
+  #define USE_WEMOS_MOTOR_V1_FREQ  1000
 #endif  // FIRMWARE_SENSORS
 
 /*********************************************************************************************\

tasmota/xdrv_34_wemos_motor_v1.ino

@@ -0,0 +1,188 @@
+/*
+  xdrv_34_wemos_motor_v1.ino - Support for I2C WEMOS motor shield (6612FNG)
+
+  Copyright (C) 2020  Andre Thomas and Theo Arends
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program 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 General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifdef USE_I2C
+#ifdef USE_WEMOS_MOTOR_V1
+/*********************************************************************************************\
+ * WEMOS_MOTOR_V1 - DC motor driver shield (6612FNG) v 1.0.0
+ *
+ * I2C Address: 0x30
+ * Command format:
+ * driver44 <command>,<motor>,<direction>{,<duty>}
+ * command:
+ *    RESET - reset a motor shield
+ *    SETMOTOR - seter motor state
+ * motor:
+ *    0 - motor A
+ *    1 - motor B
+ * direction:
+ *    0 - short break
+ *    1 - CCW
+ *    2 - CW
+ *    3 - stop
+ *    4 - standby
+ * duty (optional):
+ *    0 - 100% (100% by default)
+\*********************************************************************************************/
+
+#define XDRV_34 34
+#define XI2C_44 44 // See I2CDEVICES.md
+
+#define MOTOR_A 0
+#define MOTOR_B 1
+
+#define SHORT_BRAKE 0
+#define CCW 1
+#define CW 2
+#define STOP 3
+#define STANDBY 4
+
+bool wemos_driver_detected = false;
+
+uint8_t _motor;
+
+void Wemos_Driver_Detect(void)
+{
+  if (!I2cActive(USE_WEMOS_MOTOR_V1_ADDR))
+  {
+    I2cSetActiveFound(USE_WEMOS_MOTOR_V1_ADDR, "WEMOS_MOTOR_V1");
+    wemos_driver_detected = true;
+    Motor_Reset();
+    return;
+  }
+}
+
+void Motor_Reset(void)
+{
+  Wire.begin();
+  Motor_SetFreq(USE_WEMOS_MOTOR_V1_FREQ);
+  Response_P(PSTR("{\"WEMOS_MOTOR_V1\":{\"RESET\":\"OK\"}}"));
+}
+
+void Motor_SetFreq(uint32_t freq)
+{
+  Wire.beginTransmission(USE_WEMOS_MOTOR_V1_ADDR);
+  Wire.write(((byte)(freq >> 16)) & (byte)0x0f);
+  Wire.write((byte)(freq >> 16));
+  Wire.write((byte)(freq >> 8));
+  Wire.write((byte)freq);
+  Wire.endTransmission(); // stop transmitting
+  delay(100);
+}
+
+void Motor_SetMotor(uint8_t motor, uint8_t dir, float pwm_val)
+{
+  uint16_t _pwm_val;
+  Wire.beginTransmission(USE_WEMOS_MOTOR_V1_ADDR);
+  Wire.write(motor | (byte)0x10);
+  Wire.write(dir);
+
+  _pwm_val = uint16_t(pwm_val * 100);
+
+  if (_pwm_val > 10000)
+    _pwm_val = 10000;
+
+  Wire.write((byte)(_pwm_val >> 8));
+  Wire.write((byte)_pwm_val);
+  Wire.endTransmission();
+
+  delay(100);
+
+  Response_P(PSTR("{\"WEMOS_MOTOR_V1\":{\"SETMOTOR\":\"OK\"}}"));
+}
+
+bool Motor_Command(void)
+{
+  uint8_t args_count = 0;
+  if (XdrvMailbox.data_len > 0)
+  {
+    args_count = 1;
+  }
+  else
+  {
+    return false;
+  }
+
+  for (uint32_t idx = 0; idx < XdrvMailbox.data_len; idx++)
+  {
+    if (' ' == XdrvMailbox.data[idx])
+    {
+      XdrvMailbox.data[idx] = ',';
+    }
+    if (',' == XdrvMailbox.data[idx])
+    {
+      args_count++;
+    }
+  }
+  UpperCase(XdrvMailbox.data, XdrvMailbox.data);
+
+  char *command = strtok(XdrvMailbox.data, ",");
+
+  if (strcmp(command, "RESET") == 0)
+  {
+    Motor_Reset();
+    return true;
+  }
+
+  if (strcmp(command, "SETMOTOR") == 0)
+  {
+    if (args_count >= 3)
+    {
+
+      int motor = atoi(strtok(NULL, ","));
+      int dir = atoi(strtok(NULL, ","));
+      int duty = 100;
+
+      if (args_count == 4)
+      {
+        duty = atoi(strtok(NULL, ","));
+      }
+
+      Motor_SetMotor(motor, dir, duty);
+
+      return true;
+    }
+  }
+  return false;
+}
+
+bool Xdrv34(uint8_t function)
+{
+  if (!I2cEnabled(XI2C_44))
+  {
+    return false;
+  }
+  bool result = false;
+  if (FUNC_INIT == function)
+  {
+    Wemos_Driver_Detect();
+    result = wemos_driver_detected;
+  }
+  else if (wemos_driver_detected)
+  {
+    if (FUNC_COMMAND_DRIVER == function && XI2C_44 == XdrvMailbox.index)
+    {
+      result = Motor_Command();
+    }
+  }
+  return result;
+}
+
+#endif // USE_WEMOS_MOTOR_V1
+#endif // USE_IC2