The ST NUCLEO L4342KC and Digilent Pmod OLEDrgb tested. Be aware of the correct revision of the OS and correct versions of the display driver libraries!
Dependencies: Adafruit_SSD1331_Mbed Adafruit-GFX
main.cpp
- Committer:
- timo_k2
- Date:
- 2020-08-29
- Revision:
- 0:adc62c00bb85
File content as of revision 0:adc62c00bb85:
/* mbed Microcontroller Library * Copyright (c) 2019 ARM Limited * SPDX-License-Identifier: Apache-2.0 ************************************************************************ * * Commissioning test for the L432KC and the Pmod small OLED display * ************************************************************************* * Description: McLab10_OLEDrgb_L432KC * "Test module Pmod Digilent Lextronic" will be displayed on OLEDrgb module * with different size and colors..... and later the variable values. * * Material * 1. ST L432KC ( or some other micro controller board with SPI communication ) * 2. Digilent Pmod OLEDrgb and the libraries * Adafruit_SSD1331_Mbed * Adafruit-GFX * These libraries can be found with search on the page * https://www.mbed.com/en/platform/mbed-os/ * Please connect L432KC - Pmod_OLEDrgb with lines: * L432KC D13 - OLED 4 SCK hardware defined for the SPI * L432KC D11 - OLED 2 MOSI hardware definef for the SPI * L432KC D9 - OLED 1 CS or any other free * L432KC D10 - OLED 7 DC or any other free * L432KC D6 - OLED 8 RES or any other free * VCC - OLED 9 VCCEN Enable - VCC * VCC - OLED10 PMODEN Pmod Enable - VCC * GND - OLED 5 Ground * VCC - OLED 6 Power supply 3,3 V * ************************************************************************* * Compiles OK, works with hardware with operating system revision 6691:cf4f12a * Compiles OK, DOESN'T WORK with hardware with op sys revision 7088:3ab72c7 * Timo Karppinen 28.08.2020 **************************************************************/ #include "mbed.h" #include "Adafruit_SSD1331.h" // By using the Adafruit SSD1331 library and Adafruit GFX library #include "Adafruit_GFX.h" // we will get similar code than in Arduino-boards working. // There are other SSD1331 libraries, too. // https://os.mbed.com/search/?q=ssd1331 // The tested are: // Adafruit_SSD1331_Mbed by Marijn Romeijn // Adafruit_GFX by Team_EIC // PmodOLEDrgb Adafruit_SSD1331 OLED(D9, D6, D10, D11, NC, D13); // cs, res, dc, mosi, (nc), sck //DigitalOut LED(LED1); // LED1, LED2, LED3 and LED4 are the D13 PB_3 pin in this board and //can not be used because of the SPI DigitalOut VCCEN(D3); DigitalOut PMODEN(D5); // Definition of colours on the OLED display #define Black 0x0000 #define Blue 0x001F #define Red 0xF800 #define Green 0x07E0 #define Cyan 0x07FF #define Magenta 0xF81F #define Yellow 0xFFE0 #define White 0xFFFF float stepsScaledF = 0; // 32 bit floating point void getSTEPS(); char Time[50],Date[50]; void getTime(); int first = 0; int main() { // Showing with a LED that program has started // LED = 0; VCCEN = 1; // if you did not connect VCCEN permanently to Vcc PMODEN = 1; // if you did not connect PMODEN permanently to Vcc ThisThread::sleep_for(2000); // LED = 1; ThisThread::sleep_for(2000); // LED = 0; // Initalize the PmodOLEDrgb OLED.begin(); // initialization of display object OLED.clearScreen(); while (true) { while(first < 3) { first += 1; OLED.fillScreen(Black); // background screen in black OLED.setTextColor(Cyan); // colour of text in cyan OLED.setCursor(0,0); // cursor is in x=0 and y=15 OLED.printf("Test module Pmod"); // display text ThisThread::sleep_for(500); // wait 500 ms OLED.setCursor(0,15); // cursor is in x=0 and y=15 OLED.setTextSize(2); // size of text OLED.setTextColor(Red); // text in red colour OLED.printf("DIGILENT"); // display text OLED.setCursor(20,40); // cursor is in x=20 and y=40 OLED.setTextSize(1); // size of text OLED.setTextColor(Green); // text in green colour OLED.printf("LEXTRONIC"); // display text OLED.drawFastHLine(1, 60, OLED.width()-1, Blue); //blue line x=1, width-1 and y=60 ThisThread::sleep_for(2000); // wait 2 s OLED.fillScreen(Black); // background display in black (erase display) OLED.fillRoundRect(5, 5, 30, 40, 1, Blue); // French flag bleu blanc rouge OLED.fillRoundRect(35, 5, 30, 40, 1, White); OLED.fillRoundRect(65, 5, 30, 40, 1, Red); OLED.fillCircle(90, 55, 5, Yellow); // yellow circle with radius=5 in x=90 and y=55 ThisThread::sleep_for(2000); // wait 2 s } getTime(); OLED.clearScreen(); OLED.fillScreen(Black); // background screen in black OLED.setTextColor(Cyan); // colour of text in cyan ThisThread::sleep_for(300); OLED.setCursor(0,0); // cursor is in x=0 and y=0 OLED.printf("Rec '%s' \n",Time); getSTEPS(); OLED.printf("value = '%0.1f' \n",stepsScaledF); if (stepsScaledF > 2.00) { OLED.setTextColor(Yellow); OLED.printf("Be aware of reaching the limit"); OLED.fillRoundRect(10, 35, 50, 3 , 1, Yellow); } OLED.setCursor(0,40); // cursor is in x=0 and y=0 OLED.printf("Wait a moment !"); OLED.drawFastHLine(1, 60, OLED.width()-1, Blue); // blue line x=1 to screen width-1 and y=60 printf("printed on OLED"); ThisThread::sleep_for(3000); } } void getTime() { time_t seconds = time(NULL); // https://os.mbed.com/docs/mbed-os/v6.2/apis/time.html strftime(Time,40,"%H:%M:%S", localtime(&seconds)); strftime(Date,40,"%d-%b-%Y", localtime(&seconds)); printf("Recorded '%s' \r\n",Time); } void getSTEPS() { static int count; count = count + 100; if (count > 4095){ count = 0; } stepsScaledF = (float(count))*(float(2.50)/4095); // The value 2.50 is 64 bit double precision floating point of type double. // Conversions to 32 bit floating point of type float. printf("Counter value '%d' \r\n",count); printf("Scaled output '%0.1f' \r\n",stepsScaledF); ThisThread::sleep_for(100); }