![](/media/cache/profiles/Timo_01_DSC_4754_533x533.jpg.50x50_q85.jpg)
The code is developed for the hardware NUCLEO-L432KC and Digilent Pmod OLEDrgb. The purpose is to make students learn the development process and test that the hardware works fine. For converting this to Mbed OS 6 Adafruit_GFX.h needed to add #include "Stream.h" in beginning of the Adafruit_GFX.h Adafruit_SSD1331.cpp wait_ms(200) replaced with ThisThread::sleep_for(200ms); for all the similar wait_ms lines.
Dependencies: Adafruit-GFX-MbedOS6
Diff: main.cpp
- Revision:
- 0:9f57fa937a86
- Child:
- 1:de95c9ab922e
diff -r 000000000000 -r 9f57fa937a86 main.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Sat Aug 29 12:22:13 2020 +0000 @@ -0,0 +1,161 @@ +/* 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 "Stream.h" // testing +#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(2000ms); + // LED = 1; + ThisThread::sleep_for(2000ms); + // 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(500ms); // 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(2s); // 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(2s); // wait 2 s + } + + getTime(); + OLED.clearScreen(); + OLED.fillScreen(Black); // background screen in black + OLED.setTextColor(Cyan); // colour of text in cyan + ThisThread::sleep_for(300ms); + 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(3000ms); +} +} + +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(100ms); +} \ No newline at end of file