Differences

This shows you the differences between two versions of the page.

--- tinyidiot [2018/12/19 16:23] – [TinyIdiot] yair
+++ tinyidiot [2018/12/20 21:44] – [code] yair
@@ Line 33: / Line 33: @@
 ==== code ====
-<code>
+https://github.com/idiot-io/TinyTony
-/*
-  TinyIdiot
-  tiytony esp8266
-  drv8830 code from https://jiwashin.blogspot.com/2016/09/drive-dc-motor-by-drv8830-and-esp8266.html
-  pdf > http://www.tij.co.jp/jp/lit/ds/symlink/drv8830.pdf
-  ##wiring
-  ESP	        DRV 8830
-  GPIO 4	|   SDA
-  GPIO 5	|   SCL
-  VIN	    |   Vcc
-  GND	    |   Gnd
-  * **connect to the ESP only with I2C pulled up with 3.3v.**
-  * Motor (+) and OUT1, motor (-) and OUT2
-  * A 1 nF ceramic capacitor between + and - of the motor
-  * A resistance of 0.2 Ω between ISENSE and GND of the DRV 8830
-  * 0.1 μF ceramic capacitor between VCC and GND of the DRV 8830
-  * A 10 kΩ resistor between SDA and 3.3 v
-  * A 10 kΩ resistor between SCL and 3.3 v
-  * 5 V output such as USB serial and VIN of ESP - WROOM - 02 board
-  * GND of USB serial etc. and GND of ESP - WROOM - 02 board
-*/
-#include <Arduino.h>
-#include <Wire.h>
-uint8_t readMotorStatus();
-void resetMotorStatus();
-void runMotor(int inVector);
-void writeToDriver(byte inDirection, byte inVoltage);
-void brakeMotor();
-const int kDrv8830Address = 0x64;
-const int kBitClear  = 0x80;
-const int kBitILimit = 0x10;
-const int kBitOTS    = 0x08;
-const int kBitUVLO   = 0x04;
-const int kBitOCP    = 0x02;
-const int kBitFault  = 0x01;
-//
-//  Setup
-//
-void setup() {
-  Serial.begin(115200);
-  Wire.begin();
-}
-//
-//  Loop
-//
-float r = 0;
-void loop() {
-  //
-  //  Motor
-  float s = sin(r) * 64.0;
-  r += 0.1;
-  if (r > 6.28) r = 0.0;
-  int out = (s > 0) ? 0x01 : 0x02;
-  int speed = s;
-  runMotor(speed);
-  int status = readMotorStatus();
-  if (status & kBitFault) {
-    Serial.print("Motor Fault : ");
-    Serial.println(status, HEX);
-    resetMotorStatus();
-  }
-  delay(100);
-}
-//
-//  DRV8830 Controll
-//
-uint8_t readMotorStatus() {
-  uint8_t result = 0x00;
-  Wire.beginTransmission(kDrv8830Address);
-  Wire.write(0x01); //  read register 0x01
-  Wire.endTransmission();
-  Wire.requestFrom(kDrv8830Address, 1);
-  if (Wire.available()) {
-    result = Wire.read();
-  } else {
-    Serial.println("No status data");
-  }
-  return result;
-}
-void resetMotorStatus() {
-  Wire.beginTransmission(kDrv8830Address);
-  Wire.write(0x01); //  fault
-  Wire.write(0x80);  // clear
-  Wire.endTransmission(true);
-}
-void runMotor(int inVector) {
-  int direction;
-  int voltage;
-  if (inVector > 0) {
-    direction = 0x01;
-    voltage = inVector;
-  } else if (inVector == 0) {
-    direction = 0x00;
-    voltage = 0;
-  } else {
-    direction = 0x02;
-    voltage = -inVector;
-  }
-  writeToDriver(direction, voltage);
-}
-void brakeMotor() {
-  writeToDriver(0x03, 0x00);
-}
-void writeToDriver(byte inDirection, byte inVoltage) {
-  if (inVoltage <= 0x05) inVoltage = 0x06;  // minimum voltage value is 0x06.
-  int outData = (inVoltage & 0x3f) << 2 | (inDirection & 0x03);
-  Wire.beginTransmission(kDrv8830Address);
-  Wire.write(0x00); //  control
-  Wire.write(outData);  //
-  Wire.endTransmission(true);
-  delay(12);
-}
-</code>