han back
/
CLEO_SMART_AIRCON
SMART CLEO Smart Aircon
Revision 0:c5ba7cb9a63e, committed 2017-12-06
- Comitter:
- SMART_CLEO
- Date:
- Wed Dec 06 08:53:58 2017 +0000
- Commit message:
- SMART_CLEO
Changed in this revision
diff -r 000000000000 -r c5ba7cb9a63e TextLCD/TextLCD.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextLCD/TextLCD.cpp Wed Dec 06 08:53:58 2017 +0000 @@ -0,0 +1,163 @@ +/* mbed TextLCD Library, for a 4-bit LCD based on HD44780 + * Copyright (c) 2007-2010, sford + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "TextLCD.h" +#include "mbed.h" + +TextLCD::TextLCD(PinName rs, PinName rw, PinName e, PinName d0, PinName d1, + PinName d2, PinName d3, LCDType type) : _rs(rs), _rw(rw), + _e(e), _d(d0, d1, d2, d3), + _type(type) { + + _rw = 0; + _e = 1; + _rs = 0; // command mode + _d.output(); + + wait(0.015); // Wait 15ms to ensure powered up + + // send "Display Settings" 3 times (Only top nibble of 0x30 as we've got 4-bit bus) + for (int i=0; i<3; i++) { + writeByte(0x3); + wait(0.00164); // this command takes 1.64ms, so wait for it + } + writeByte(0x2); // 4-bit mode + wait(0.000040f); // most instructions take 40us + + writeCommand(0x28); // Function set 001 BW N F - - + writeCommand(0x0C); + writeCommand(0x6); // Cursor Direction and Display Shift : 0000 01 CD S (CD 0-left, 1-right S(hift) 0-no, 1-yes + cls(); +} + +void TextLCD::character(int column, int row, int c) { + int a = address(column, row); + writeCommand(a); + writeData(c); +} + +void TextLCD::cls() { + writeCommand(0x01); // cls, and set cursor to 0 + wait(0.00164f); // This command takes 1.64 ms + locate(0, 0); +} + +void TextLCD::locate(int column, int row) { + _column = column; + _row = row; +} + +int TextLCD::_putc(int value) { + if (value == '\n') { + _column = 0; + _row++; + if (_row >= rows()) { + _row = 0; + } + } else { + character(_column, _row, value); + _column++; + if (_column >= columns()) { + _column = 0; + _row++; + if (_row >= rows()) { + _row = 0; + } + } + } + return value; +} + +int TextLCD::_getc() { + return -1; +} + +void TextLCD::writeByte(int value) { + _rw = 0; + + _d = value >> 4; + wait(0.000040f); // most instructions take 40us + _e = 0; + wait(0.000040f); + _e = 1; + _d = value >> 0; + wait(0.000040f); + _e = 0; + wait(0.000040f); // most instructions take 40us + _e = 1; +} + +void TextLCD::writeCommand(int command) { + _rs = 0; + writeByte(command); +} + +void TextLCD::writeData(int data) { + _rs = 1; + writeByte(data); +} + +int TextLCD::address(int column, int row) { + switch (_type) { + case LCD20x4: + switch (row) { + case 0: + return 0x80 + column; + case 1: + return 0xc0 + column; + case 2: + return 0x94 + column; + case 3: + return 0xd4 + column; + } + case LCD16x2B: + return 0x80 + (row * 40) + column; + case LCD16x2: + case LCD20x2: + default: + return 0x80 + (row * 0x40) + column; + } +} + +int TextLCD::columns() { + switch (_type) { + case LCD20x4: + case LCD20x2: + return 20; + case LCD16x2: + case LCD16x2B: + default: + return 16; + } +} + +int TextLCD::rows() { + switch (_type) { + case LCD20x4: + return 4; + case LCD16x2: + case LCD16x2B: + case LCD20x2: + default: + return 2; + } +}
diff -r 000000000000 -r c5ba7cb9a63e TextLCD/TextLCD.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TextLCD/TextLCD.h Wed Dec 06 08:53:58 2017 +0000 @@ -0,0 +1,111 @@ +/* mbed TextLCD Library, for a 4-bit LCD based on HD44780 + * Copyright (c) 2007-2010, sford + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#ifndef MBED_TEXTLCD_H +#define MBED_TEXTLCD_H + +#include "mbed.h" + +/** A TextLCD interface for driving 4-bit HD44780-based LCDs + * + * Currently supports 16x2, 20x2 and 20x4 panels + * + * @code + * #include "mbed.h" + * #include "TextLCD.h" + * + * TextLCD lcd(p10, p12, p15, p16, p29, p30); // rs, e, d0-d3 + * + * int main() { + * lcd.printf("Hello World!\n"); + * } + * @endcode + */ +class TextLCD : public Stream { +public: + + /** LCD panel format */ + enum LCDType { + LCD16x2 /**< 16x2 LCD panel (default) */ + , LCD16x2B /**< 16x2 LCD panel alternate addressing */ + , LCD20x2 /**< 20x2 LCD panel */ + , LCD20x4 /**< 20x4 LCD panel */ + }; + + /** Create a TextLCD interface + * + * @param rs Instruction/data control line + * @param e Enable line (clock) + * @param d0-d3 Data lines + * @param type Sets the panel size/addressing mode (default = LCD16x2) + */ + TextLCD(PinName rs, PinName rw, PinName e, PinName d0, PinName d1, PinName d2, PinName d3, LCDType type = LCD16x2); + +#if DOXYGEN_ONLY + /** Write a character to the LCD + * + * @param c The character to write to the display + */ + int putc(int c); + + /** Write a formated string to the LCD + * + * @param format A printf-style format string, followed by the + * variables to use in formating the string. + */ + int printf(const char* format, ...); +#endif + + /** Locate to a screen column and row + * + * @param column The horizontal position from the left, indexed from 0 + * @param row The vertical position from the top, indexed from 0 + */ + void locate(int column, int row); + + /** Clear the screen and locate to 0,0 */ + void cls(); + + int rows(); + int columns(); + +protected: + + // Stream implementation functions + virtual int _putc(int value); + virtual int _getc(); + + int address(int column, int row); + void character(int column, int row, int c); + void writeByte(int value); + void writeCommand(int command); + void writeData(int data); + + DigitalOut _rs, _rw, _e; + BusInOut _d; + LCDType _type; + + int _column; + int _row; +}; + +#endif
diff -r 000000000000 -r c5ba7cb9a63e main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Wed Dec 06 08:53:58 2017 +0000 @@ -0,0 +1,157 @@ +#include "mbed.h" +#include "TextLCD.h" + +#define DHTLIB_OK 0 +#define DHTLIB_ERROR_CHECKSUM -1 +#define DHTLIB_ERROR_TIMEOUT -2 + +PinName pin_DHT11 = PA_15; + +// INA, INB +PinName pin_DC[2] = {PA_6, PA_7}; + +DigitalInOut data_pin(pin_DHT11); +PwmOut INA(pin_DC[0]); +PwmOut INB(pin_DC[1]); + +// rs, rw, e, d0-d3 +TextLCD lcd(PB_12, PB_13, PB_14, PB_15, PA_9, PA_10, PA_11); + +enum{STOP, CW, CCW}; + +uint8_t Temp_High = 28, Temp_Low = 26, Aircon_flag = 0; + +Timer tmr; + +int humi; +int temp; + +void DC_Ctrl(uint8_t dir, float Speed); +int dht_read(void); + +int main() { + + lcd.printf("Temp : [C]\n"); + lcd.printf("DC MOTOR : OFF"); + + while(1) { + if(dht_read() == 0) + { + lcd.locate(7, 0); + lcd.printf("%3d", temp); + if(Aircon_flag == 0) + { + if(Temp_High <= temp) + { + DC_Ctrl(CW, 50); + lcd.locate(11, 1); + lcd.printf("ON "); + Aircon_flag = 1; + } + } + else + { + if(Temp_Low >= temp) + { + DC_Ctrl(STOP, 0); + lcd.locate(11, 1); + lcd.printf("OFF"); + Aircon_flag = 0; + } + } + } + wait(2); + } +} + +void DC_Ctrl(uint8_t dir, float Speed) +{ + switch(dir) + { + case STOP: + INA = 0; + INB = 0; + break; + case CW: + INA = Speed/100; + INB = 0; + break; + case CCW: + INA = 0; + INB = Speed/100; + break; + } +} + +int dht_read(void){ + + // BUFFER TO RECEIVE + uint8_t bits[5]; + uint8_t cnt = 7; + uint8_t idx = 0; + + tmr.stop(); + tmr.reset(); + + // EMPTY BUFFER + for(int i=0; i< 5; i++) bits[i] = 0; + + // REQUEST SAMPLE + data_pin.output(); + data_pin.write(0); + wait_ms(18); + data_pin.write(1); + wait_us(10); + data_pin.input(); + wait_us(40); + + // ACKNOWLEDGE or TIMEOUT + unsigned long loopCnt = 10000; + + while(data_pin.read() == 0)if(!loopCnt--)return DHTLIB_ERROR_TIMEOUT; + + loopCnt = 10000; + + while(data_pin.read() == 1)if(!loopCnt--)return DHTLIB_ERROR_TIMEOUT; + + // READ OUTPUT - 40 BITS => 5 BYTES or TIMEOUT + + for(int i=0; i<40; i++){ + + loopCnt = 10000; + + while(data_pin.read() == 0)if(loopCnt-- == 0)return DHTLIB_ERROR_TIMEOUT; + + //unsigned long t = micros(); + tmr.start(); + + loopCnt = 10000; + + while(data_pin.read())if(!loopCnt--)return DHTLIB_ERROR_TIMEOUT; + + if(tmr.read_us() > 40) bits[idx] |= (1 << cnt); + + tmr.stop(); + tmr.reset(); + + if(cnt == 0){ // next byte? + + cnt = 7; // restart at MSB + idx++; // next byte! + + }else cnt--; + + } + + // WRITE TO RIGHT VARS + // as bits[1] and bits[3] are allways zero they are omitted in formulas. + humi = bits[0]; + temp = bits[2]; + + uint8_t sum = bits[0] + bits[1] + bits[2] + bits[3]; + + if(bits[4] != sum){return DHTLIB_ERROR_CHECKSUM;} + + return DHTLIB_OK; + +} \ No newline at end of file
diff -r 000000000000 -r c5ba7cb9a63e mbed-os.lib --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-os.lib Wed Dec 06 08:53:58 2017 +0000 @@ -0,0 +1,1 @@ +https://github.com/ARMmbed/mbed-os/#ca661f9d28526ca8f874b05432493a489c9671ea