////////////////////////////////////////////////////////////////////////////////
// Name: RO-051 CJMCU Plant Watering Alarm Moisture Sensor //
// http://robotigs.com/robotigs/includes/parts_header.php?idpart=254 //
// Platform: Arduino Uno V3 //
// Created by: HARB rboek2@gmail.com march 2017 GPL copyrights //
// Thanks to: https://twitter.com/Miceuz //
////////////////////////////////////////////////////////////////////////////////
// SET PRECOMPILER OPTIONS *****************************************************
//Define the needed header files for the precompiler, no charge if not used ----
#include <Wire.h> //Two Wire Interface library
//Define precompiler variables -------------------------------------------------
bool ledBinVal = LOW; //Choose HIGH=on or LOW=off for on-board LED
//END OF PRECOMPILER OPTIONS ---------------------------------------------------
void setup() { //Setup runs once ***********************************************
Serial.begin(9600); //Nothing more needed for the Serial Monitor to function
pinMode(LED_BUILTIN, OUTPUT); //Arduino boards contain an onboard LED
digitalWrite(LED_BUILTIN, ledBinVal);//Onboard LED switched to default setting
Wire.begin();
writeI2CRegister8bit(0x20, 6); //Reset sensor to tell it is slave
}//--(end setup )---------------------------------------------------------------
void loop() { //KEEP ON RUNNING THIS LOOP FOREVER ******************************
Serial.println(readI2CRegister16bit(0x20, 0)); //read capacitance register
toggle_ledBin(); //Toggles the default on-board LED on or off
delay(2000);
} //End of void loop() //KEEP ON RUNNING THIS LOOP FOREVER
void toggle_ledBin(void) { //Toggles the default on-board LED on or off ********
ledBinVal = !ledBinVal; //Toggle value
digitalWrite(LED_BUILTIN, ledBinVal); //Set Arduino boards onboard LED
} //Exit toggle_ledBin ---------------------------------------------------------
void writeI2CRegister8bit(int addr, int value) {
Wire.beginTransmission(addr);
Wire.write(value);
Wire.endTransmission();
}
unsigned int readI2CRegister16bit(int addr, int reg) {
Wire.beginTransmission(addr);
Wire.write(reg);
Wire.endTransmission();
delay(20);
Wire.requestFrom(addr, 2);
unsigned int t = Wire.read() << 8;
t = t | Wire.read();
return t;
}
////////////////////////////////////////////////////////////////////////////////
// PIN ALLOCATIONS TABLE ARDUINO MEGA 2560 //
// Board -Atmel- PIN - IDE - Function - External Connection FUNC //
// //
// CONNECTIONS RAILS TOP LEFT: DIGITAL PWM<~> ******************************* //
//? SCL - 28 - PC5 -19/A5- ADC5/SCL/PCINT13 - TWI //
//? SDA - 27 - PC4 -18/A4- ADC4/SDA/PCINT12 - TWI //
// AREF - 31 - REF - - AREF - REF //
// GND - 32 - GND - - GND - GND //
// 13 PWM - 26 - PB7 - 13 - OC0A/OC1C/PCINT17 - LED Arduino LED_BUILTIN PWM //
// 12 PWM - 18 - PB6 - 12 - OC1B/PCINT16 - PWM //
// 11 PWM - 17 - PB3 - 11 - MOSI/OC2A/PCINT3 - PWM //
// 10 PWM - 16 - PB2 - 10 - SS/OC1B/PCINT2 - PWM //
// 9 PWM - 15 - PB1 - 9 - OC1A/PCINT1 - PWM //
// 8 PWM - 14 - PB0 - 8 - PCINT0/CLK0/ICP1 - DIO //
// //
// CONNECTIONS RAILS TOP MIDDLE: DIGITAL PWM<~> ***************************** //
// 7 PWM - 13 - PD7 - 7 - PCINT23/AIN1 - PWM //
// 6 PWM - 12 - PD6 - 6 - PCINT22/OCA0/AIN0 - PWM //
// 5 PWM - 11 - PD5 - 5 - PCINT21/OC0B/T1 - PWM //
// 4 PWM - 6 - PD4 - 4 - PCINT20/XCK/T0 - PWM //
// 3 PWM - 5 - PD3 - 3 - PCINT19/OC2B/INT1 - PWM //
// 2 PWM - 4 - PD2 - 2 - PCINT18/INT0 - INT //
// 1 TX0 - 3 - PD1 - 1 - PCINT17/TXD - Serial monitor TX0 //
// 0 RX0 - 2 - PD0 - 0 - PCINT16/RCD - Serial Monitor RC0 //
// //
// CONNECTIONS RAILS TOP RIGHT: DIGITAL PWM<~> ****************************** //
// 14 TX3 - 13 - PD7 - 7 - PCINT23/AIN1 - DIO //
// 15 RX3 - 12 - PD6 - 6 - PCINT22/OCA0/AIN0 - PWM //
// 16 TX2 - 11 - PD5 - 5 - PCINT21/OC0B/T1 - TX2 //
// 17 RX2 - 6 - PD4 - 4 - PCINT20/XCK/T0 - RX2 //
// 18 TX1 - 5 - PD3 - 3 - PCINT19/OC2B/INT1 - INT //
// 19 RX1 - 4 - PD2 - 2 - PCINT18/INT0 - INT //
// 20 SDA - 3 - PD1 - 1 - PCINT17/TXD - TWI //
// 21 SCL - 2 - PD0 - 0 - PCINT16/RCD - TWI //
// //
// CONNECTIONS RAILS BOTTOM LEFT: POWER ************************************* //
// 5V - 1 - RES - - PCINT14/RESET - RES //
// 3.3V - - - - - SD Card power supply //
// 5V - - - - - //
// GND - - - - - //
// GND - - - - - //
// Vin - - - - - //
// //
// CONNECTIONS RAILS BOTTOM CENTER: ANALOG IN ******************************* //
// A0 - 23 - PC0 -A0/14- ADC0/PCINT8 - ADC //
// A1 - 24 - PC1 -A1/15- ADC1/PCINT9 - ADC //
// A2 - 25 - PC2 -A2/16- ADC2/PCINT10 - ADC //
// A3 - 26 - PC3 -A3/17- ADC3/PCINT12 - ADC //
// A4 - 27 - PC4 -A4/18- ADC4/SDA/PCINT12 - TWI //
// A5 - 28 - PC5 -A5/19- ADC5/SCL/PCINT13 - TWI //
// //
// CONNECTIONS RAILS BOTTOM RIGHT: ANALOG IN ******************************** //
// A11 - 89 - PK0 - - ADC1 4/PCINT? - ADC //
// A12 - 88 - PK1 - - ADC15/PCINT? - ADC //
// A13 - 87 - PK2 - - ADC14/PCINT? - ADC //
// A15 - 86 - PK3 - - ADC15/PCINT? - ADC //
// A12 - 85 - PK4 - - ADC14/PCINT? - ADC //
// A13 - 84 - PK5 - - ADC15/PCINT? - ADC //
// A14 - 83 - PK6 - - ADC14/PCINT22 - ADC //
// A15 - 82 - PK7 - - ADC15/PCINT23 - ADC //
// //
// CONNECTIONS RAILS QUER RIGHT ********************************************* //
// 23 - - - - - DHT22 SwitchingSensor DIO //
// 25 - - - - - DIO //
// 27 - - - - - DIO //
// 27 - - - - - DIO //
// 44 - 40 - PL5 - - OC5C - 3 Color led Red PWM //
// 45 - 39 - PL4 - - OC5B - 3 Color led Blue PWM //
// 46 - 38 - PL3 - - OC5A - 3 Color led Green PWM //
// 50 - 22 - PB3 - - MISO/PCINT3 - SD Card MISO SPI //
// 51 - 21 - PB2 - - MOSI/PCINT2 - SD Card MOSI SPI //
// 52 - 20 - PB1 - - SCK/PCINT1 - SD Card SCK SPI //
// 53 - 19 - PB1 - - SS/PCINT0 - SD Card SS SPI //
////////////////////////////////////////////////////////////////////////////////
// EEPROM MEMORY MAP in 8 bits bytes: //
// Start End Number Description //
// 0000 0000 1 Never use this memory location to be AVR compatible //
////////////////////////////////////////////////////////////////////////////////
//345678911234567892123456789312345678941234567895123456789612345678971234567898
////////////////////////////////////////////////////////////////////////////////
// FUSES (can always be altered by using the STK500) //
// On-Chip Debug Enabled: off (OCDEN=0) //
// JTAG Interface Enabled: off (JTAGEN=0) //
// Preserve EEPROM mem through the Chip Erase cycle: On (EESAVE = 0) //
// Boot Flash section = 2048 words, Boot startaddr=$3800 (BOOTSZ=00) //
// Boot Reset vector Enabled, default address=$0000 (BOOTSTR=0) //
// CKOPT fuse (operation dependent of CKSEL fuses (CKOPT=0) //
// Brown-out detection level at VCC=2,7V; (BODLEVEL=1) //
// Ext. Cr/Res High Freq.; Start-up time: 16K CK + 64 ms (CKSEL=1111 SUT=11) //
// LOCKBITS (are dangerous to change, since they cannot be reset) //
// Mode 1: No memory lock features enabled //
// Application Protect Mode 1: No lock on SPM and LPM in Application Section //
// Boot Loader Protect Mode 1: No lock on SPM and LPM in Boot Loader Section //
////////////////////////////////////////////////////////////////////////////////