Rev 1.6 - Sample Period Work in progress
Dependencies: mbed Bitmap N5110 TMP102 Joystick
main.cpp
- Committer:
- louismarr
- Date:
- 2021-12-16
- Revision:
- 6:117edd5dc0a0
- Parent:
- 5:138a91e25e1c
- Child:
- 7:ef1dab708752
File content as of revision 6:117edd5dc0a0:
/* 2645_I2C_TMP102_Library Sample code from ELEC2645 Week 17 Lab Demonstrates how to re-factor the TMP102 code into a library (c) Craig A. Evans, University of Leeds, Feb 2016 */ #include "mbed.h" // include the library header, ensure the library has been imported into the project #include "TMP102.h" #include "N5110.h" #include "Bitmap.h" // Create TMP102 object TMP102 tmp102(I2C_SDA,I2C_SCL); N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11); // UART connection for PC Serial serial(USBTX,USBRX); AnalogIn SP(PTB2); // K64F on-board LEDs DigitalOut r_led(LED_RED); DigitalOut g_led(LED_GREEN); DigitalOut b_led(LED_BLUE); // K64F on-board switches InterruptIn sw2(SW2); InterruptIn sw3(SW3); // error function hangs flashing an LED void error(); // setup serial port void init_serial(); // set-up the on-board LEDs and switches void init_K64F(); int main() { // initialise the board and serial port init_K64F(); init_serial(); // call the sensor init method using dot syntax tmp102.init(); lcd.init(); lcd.setContrast(0.4); while (1) { // read temperature and print over serial port float T = tmp102.get_temperature(); serial.printf("T = %f C\n",T); // small delay - 1s to match the update rate of the sensor (1 Hz) lcd.clear(); // clear buffer at start of every loop // can directly print strings at specified co-ordinates (must be less than 84 pixels to fit on display) lcd.printString("Lets Gan!",0,0); char buffer[14]; // each character is 6 pixels wide, screen is 84 pixels (84/6 = 14) // so can display a string of a maximum 14 characters in length // or create formatted strings - ensure they aren't more than 14 characters long // int temperature = 27; int length = sprintf(buffer,"T=%.2F 'C",T); // print formatted data to buffer // it is important the format specifier ensures the length will fit in the buffer if (length <= 14) // if string will fit on display (assuming printing at x=0) lcd.printString(buffer,0,2); // display on screen float Set = 33 * SP; length = sprintf(buffer,"SP=%.2F 'C",Set); if (length <= 14) // if string will fit on display (assuming printing at x=0) lcd.printString(buffer,0,4); // display on screen serial.printf(" SP = %f", Set); /* float pressure = 1012.3; // same idea with floats length = sprintf(buffer,"P = %.2f mb",pressure); if (length <= 14) lcd.printString(buffer,0,3); */ lcd.refresh(); wait(1.0); } } void init_serial() { // set to highest baud - ensure terminal software matches serial.baud(9600); } void init_K64F() { // on-board LEDs are active-low, so set pin high to turn them off. r_led = 1; g_led = 1; b_led = 1; // since the on-board switches have external pull-ups, we should disable the internal pull-down // resistors that are enabled by default using InterruptIn sw2.mode(PullNone); sw3.mode(PullNone); }