Timo Karppinen
A concept design laboratory prototype for measuring ambient light value. The high levels typically mean that there is high rates of UVA nad UVB radiation as well. A warning of this is displayed on a small screen. NXP FRDM-K64F, Digilent Pmod modules Pmod OLEDrgb and Pmod ALS.
Dependencies: Adafruit_SSD1331_Mbed Adafruit-GFX
Diff: main.cpp
- Revision:
- 1:2f167213fd2d
- Parent:
- 0:87339e72a5eb
--- a/main.cpp Sun Apr 19 16:06:25 2020 +0000
+++ b/main.cpp Sat May 16 15:55:53 2020 +0000
@@ -1,13 +1,59 @@
/* mbed Microcontroller Library
* Copyright (c) 2019 ARM Limited
* SPDX-License-Identifier: Apache-2.0
- */
+************************************************************************
+*
+* Test of the Pmod small OLED display and ambient light sensor
+*
+*************************************************************************
+* Description: Pmod_OLED_ALS1
+* The message "Test module Pmod Digilent Lextronic" will be display on OLEDrgb module
+* with different size and colors..... and sensor value as well.
+*
+* Material
+* 1. NXP FRDM-K64F ( 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 FRDM-K64F - Pmod_OLEDrgb with lines:
+* K64F D13 - OLED 4 SCK hardware defined for the SPI
+* K64F D11 - OLED 2 MOSI hardware definef for the SPI
+* K64F D8 - OLED 1 CS or any other free
+* K64F D10 - OLED 7 DC or any other free
+* K64F D7 - 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
+*
+*************************************************************************
+* 3. Digilent Pmod ALS ambient light sensor
+* Please connect FRDM-K64F - PmodALS with lines:
+* K64F D13 - ALS 4 SCK hardware defined for the SPI
+* K64F D12 - ALS 3 MISO hardware defined for the SPI
+* K64F D4 - ALS 1 CS or any other free
+* GND - ALS 5 GND
+* Vcc - ALS 6 Vcc
+
+ALS data on the SPI
+D15 ... D13 - three zeros
+D12 ... D04 - 8 bits of ambient light data
+D03 ... D00 - four zeros
+
+Details on the connection of ADC IC chip on ALS board are given
+http://www.ti.com/lit/ds/symlink/adc081s021.pdf
+*
+* Timo Karppinen 24.04.2020
+**************************************************************/
+
#include "mbed.h"
-#include "Adafruit_SSD1331.h"
-#include "Adafruit_GFX.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
+
// PmodOLEDrgb
Adafruit_SSD1331 OLED(D8, D7, D10, D11, NC, D13); // cs, res, dc, mosi, (nc), sck
@@ -42,7 +88,7 @@
char Time[50],Date[50];
void getTime();
-int first(0);
+int first = 0;
int main()
{
@@ -50,19 +96,21 @@
LED = 0;
VCCEN = 1; // if you did not connect VCCEN permanently to Vcc
PMODEN = 1; // if you did not connect PMODEN permanently to Vcc
- wait_ms(2000);
+ ThisThread::sleep_for(2000);
LED = 1;
- wait_ms(2000);
+ ThisThread::sleep_for(2000);
LED = 0;
// Initalize the PmodOLEDrgb
- OLED.begin(); // initialization of display objcet
+ OLED.begin(); // initialization of display object
// SPI for the ALS
alsCS = 1;
// Setup the spi for 8 bit data, high steady state clock,
// second edge capture, with a 12MHz clock rate
spi.format(8,0);
- spi.frequency(12000000);
+ spi.frequency(12000000);
+
+ OLED.clearScreen();
while (true) {
while(first < 3)
@@ -72,7 +120,7 @@
OLED.setTextColor(Cyan); // color of text in cyan
OLED.setCursor(0,0); // cursor is in x=0 and y=15
OLED.printf("Test module Pmod"); // display text
- wait_ms(500); // wait 500 ms
+ 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 color
@@ -82,36 +130,38 @@
OLED.setTextColor(Green); // text in green color
OLED.printf("LEXTRONIC"); // display text
OLED.drawFastHLine(1, 60, OLED.width()-1, Blue); // blue line x=1 to screen width-1 and y=60
- wait_ms(2000); // wait 2 s
+ 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
- wait_ms(2000); // wait 2 s
+ ThisThread::sleep_for(2000); // wait 2 s
}
getTime();
+ OLED.clearScreen();
OLED.fillScreen(Black); // background screen in black
OLED.setTextColor(Cyan); // color of text in cyan
- wait_ms(300);
+ ThisThread::sleep_for(300);
OLED.setCursor(0,0); // cursor is in x=0 and y=0
- OLED.printf("Rec '%s' \r\n",Time);
+ OLED.printf("Rec '%s' \n",Time);
getALS();
- OLED.printf("LUX = '%0.1f' \r\n",alsScaledF);
+ OLED.printf("LUX = '%0.1f' \n",alsScaledF);
if (alsScaledF > 100)
{
OLED.setTextColor(Yellow);
- OLED.printf("Be aware of high UV radiation!");
+ OLED.printf("Be aware of high UV radiation! \n\n");
OLED.fillRoundRect(10, 35, 50, 3 , 1, Yellow);
}
- OLED.setCursor(0,40); // cursor is in x=0 and y=0
+ //OLED.setCursor(0,40); // cursor is in x=0 and y=0
OLED.printf("Test completed");
+ OLED.drawFastHLine(1, 60, OLED.width()-1, Blue); // blue line x=1 to screen width-1 and y=60
printf("printed on OLED");
- wait(1);
+ ThisThread::sleep_for(3000);
}
}
@@ -142,6 +192,6 @@
// Conversions to 32 bit floating point of type float.
printf("Ambient light raw 8 bit 0...255 = '%d' \r\n",alsRaw);
printf("Ambient light scaled to LUX = '%0.1f' \r\n",alsScaledF);
- wait_ms(100);
+ ThisThread::sleep_for(100);
}