I am trying to finish a project where I have a 3G SIM5320A shield and a TFT LCD shield stacked on an Arduino Mega. When I stack only the LCD shield and only wire power, ground, RX and TX to the SIM shield everything works as expected. But when I stack the SIM shield on the arduino and the LCD on the SIM the LCD only shows a white screen. Any help is appreciated.
#include <Elegoo_GFX.h>
#include <Elegoo_TFTLCD.h>
#include <TouchScreen.h>
#include <Adafruit_FONA.h>
#include <SoftwareSerial.h>
#include <DHT.h>
#include <stdint.h>
#if defined(__SAM3X8E__)
#undef __FlashStringHelper::F(string_literal)
#define F(string_literal) string_literal
#endif
// Define the pins used for the touchscreen
#define YP A3
#define XM A2
#define YM 9
#define XP 8
#define TS_MINX 120
#define TS_MAXX 900
#define TS_MINY 70
#define TS_MAXY 920
TouchScreen ts = TouchScreen(XP,YP, XM, YM, 300);
// Define the pins used for the LCD display
#define LCD_CS A3 // Chip Select goes to Analog 3
#define LCD_CD A2 // Command/Data goes to Analog 2
#define LCD_WR A1 // LCD Write goes to Analog 1
#define LCD_RD A0 // LCD Read goes to Analog 0
#define LCD_RESET A4
#define BLACK 0x0000
#define BLUE 0x001F
#define RED 0xF800
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define WHITE 0xFFFF
Elegoo_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
// Define pins for the SIM Shield
#define FONA_TX 50
#define FONA_RX 51
#define FONA_RST A5
SoftwareSerial fonaSS = SoftwareSerial(FONA_TX, FONA_RX);
SoftwareSerial *fonaSerial = &fonaSS;
Adafruit_FONA_3G fona = Adafruit_FONA_3G(FONA_RST);
#define DHTPIN 30
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);
// Global variables
float humidity = 0;
float temp = 0;
char currentNumber[21];
bool alertSent = false;
uint8_t type;
void setup() {
while(!Serial);
Serial.begin(115200);
tft.reset();
uint16_t identifier = tft.readID();
if(identifier == 0x9325) {
Serial.println(F("Found ILI9325 LCD driver"));
} else if(identifier == 0x9328) {
Serial.println(F("Found ILI9328 LCD driver"));
} else if(identifier == 0x4535) {
Serial.println(F("Found LGDP4535 LCD driver"));
}else if(identifier == 0x7575) {
Serial.println(F("Found HX8347G LCD driver"));
} else if(identifier == 0x9341) {
Serial.println(F("Found ILI9341 LCD driver"));
} else if(identifier == 0x8357) {
Serial.println(F("Found HX8357D LCD driver"));
} else if(identifier==0x0101)
{
identifier=0x9341;
Serial.println(F("Found 0x9341 LCD driver"));
}else {
Serial.print(F("Unknown LCD driver chip: "));
Serial.println(identifier, HEX);
Serial.println(F("If using the Elegoo 2.8\" TFT Arduino shield, the line:"));
Serial.println(F(" #define USE_Elegoo_SHIELD_PINOUT"));
Serial.println(F("should appear in the library header (Elegoo_TFT.h)."));
Serial.println(F("If using the breakout board, it should NOT be #defined!"));
Serial.println(F("Also if using the breakout, double-check that all wiring"));
Serial.println(F("matches the tutorial."));
identifier=0x9341;
}
tft.begin(identifier);
tft.setRotation(2);
pinMode(13, OUTPUT);
drawHomeScreen();
fonaSerial->begin(4800);
if (!fona.begin(*fonaSerial)) {
Serial.println(F("Couldn't find FONA"));
}
type = fona.type();
Serial.println(F("FONA is OK"));
Serial.print(F("Found "));
switch (type) {
case FONA800L:
Serial.println(F("FONA 800L")); break;
case FONA800H:
Serial.println(F("FONA 800H")); break;
case FONA808_V1:
Serial.println(F("FONA 808 (v1)")); break;
case FONA808_V2:
Serial.println(F("FONA 808 (v2)")); break;
case FONA3G_A:
Serial.println(F("FONA 3G (American)")); break;
case FONA3G_E:
Serial.println(F("FONA 3G (European)")); break;
default:
Serial.println(F("???")); break;
}
// Print module IMEI number.
char imei[15] = {0}; // MUST use a 16 character buffer for IMEI!
uint8_t imeiLen = fona.getIMEI(imei);
if (imeiLen > 0) {
Serial.print("Module IMEI: "); Serial.println(imei);
}
dht.begin();
}
#define MINPRESSURE 10
#define MAXPRESSURE 1000
void loop() {
// put your main code here, to run repeatedly:
// Check for temp/humidity changes and update the view if needed.
updateTemp();
// Get user touches
digitalWrite(13, HIGH);
TSPoint p = ts.getPoint();
digitalWrite(13, LOW);
pinMode(XM, OUTPUT);
pinMode(YP, OUTPUT);
if (p.z > MINPRESSURE && p.z < MAXPRESSURE) {
p.x = map(p.x, TS_MINX, TS_MAXX, tft.width(), 0);
p.y = (tft.height()-map(p.y, TS_MINY, TS_MAXY, tft.height(), 0));
// call changeNumber function if the user touches inside the change number button.
if (p.x > 20 && p.x < 220 && p.y > 150 && p.y < 200) {
changeNumber();
}
}
}
// Function that displays the number pad on the LCD screen
unsigned long drawNumberInputScreen() {
tft.fillScreen(WHITE);
unsigned long start = micros();
tft.setTextColor(BLACK);
tft.setTextSize(2);
tft.setCursor(60, 25);
tft.print(currentNumber);
tft.setTextColor(WHITE);
tft.setTextSize(2);
//Row 1
tft.fillRect(0, 55, 80, 62, BLACK);
tft.drawRect(0, 55, 80, 62, BLUE);
tft.setCursor(35,80);
tft.print("1");
tft.fillRect(80, 55, 80, 62, BLACK);
tft.drawRect(80, 55, 80, 62, BLUE);
tft.setCursor(115,80);
tft.print("2");
tft.fillRect(160, 55, 80, 62, BLACK);
tft.drawRect(160, 55, 80, 62, BLUE);
tft.setCursor(195,80);
tft.print("3");
//Row 2
tft.fillRect(0, 117, 80, 62, BLACK);
tft.drawRect(0, 117, 80, 62, BLUE);
tft.setCursor(35,142);
tft.print("4");
tft.fillRect(80, 117, 80, 62, BLACK);
tft.drawRect(80, 117, 80, 62, BLUE);
tft.setCursor(115,142);
tft.print("5");
tft.fillRect(160, 117, 80, 62, BLACK);
tft.drawRect(160, 117, 80, 62, BLUE);
tft.setCursor(195,142);
tft.print("6");
//Row 3
tft.fillRect(0, 179, 80, 62, BLACK);
tft.drawRect(0, 179, 80, 62, BLUE);
tft.setCursor(35,204);
tft.print("7");
tft.fillRect(80, 179, 80, 62, BLACK);
tft.drawRect(80, 179, 80, 62, BLUE);
tft.setCursor(115,204);
tft.print("8");
tft.fillRect(160, 179, 80, 62, BLACK);
tft.drawRect(160, 179, 80, 62, BLUE);
tft.setCursor(195,204);
tft.print("9");
//Row 4
tft.fillRect(0, 241, 80, 62, BLACK);
tft.drawRect(0, 241, 80, 62, BLUE);
tft.setCursor(30,266);
tft.print("<-");
tft.fillRect(80, 241, 80, 62, BLACK);
tft.drawRect(80, 241, 80, 62, BLUE);
tft.setCursor(115,266);
tft.print("0");
tft.fillRect(160, 241, 80, 62, BLACK);
tft.drawRect(160, 241, 80, 62, BLUE);
tft.setCursor(190,266);
tft.print("Ent");
}
// Function the displays the Home screen on the LCD screen
unsigned long drawHomeScreen() {
tft.fillScreen(BLACK);
unsigned long start = micros();
tft.setCursor(0,10);
tft.setTextColor(WHITE);
tft.setTextSize(3);
tft.print("Temp: ");
tft.println(temp);
tft.print("Humi: ");
tft.println(humidity);
tft.fillRect(20,150,200, 50, RED);
tft.drawRect(20,150,200,50,WHITE);
tft.setCursor(42, 168);
tft.setTextSize(2);
tft.print("Change Number");
//tft.setTextSize(1);
tft.setCursor(35,210);
tft.print("Current Number: ");
tft.setCursor(60,230);
tft.print(currentNumber);
return micros() - start;
}
// Function the reads user touches to change the alert number
void changeNumber() {
drawNumberInputScreen();
bool stillEntering = true;
int index = 0;
// Stay in the function until the user touches the "Ent" or "<-" buttons.
while (stillEntering) {
digitalWrite(13, HIGH);
TSPoint p = ts.getPoint();
digitalWrite(13, LOW);
pinMode(XM, OUTPUT);
pinMode(YP, OUTPUT);
if (p.z > MINPRESSURE && p.z < MAXPRESSURE) {
p.x = map(p.x, TS_MINX, TS_MAXX, tft.width(), 0);
p.y = (tft.height()-map(p.y, TS_MINY, TS_MAXY, tft.height(), 0));
if (p.x >= 0 && p.x <= 79 && p.y >= 55 && p.y <= 116) {
currentNumber[index] = '1';
drawNumberInputScreen();
index += 1;
} else if (p.x >= 80 && p.x <= 159 && p.y >= 55 && p.y <= 116) {
currentNumber[index] = '2';
drawNumberInputScreen();
index += 1;
} else if (p.x >= 160 && p.x <= 239 && p.y >= 55 && p.y <= 116) {
currentNumber[index] = '3';
drawNumberInputScreen();
index += 1;
} else if (p.x >= 0 && p.x <= 79 && p.y >= 117 && p.y <= 178) {
currentNumber[index] = '4';
drawNumberInputScreen();
index += 1;
} else if (p.x >= 80 && p.x <= 159 && p.y >= 117 && p.y <= 178) {
currentNumber[index] = '5';
drawNumberInputScreen();
index += 1;
} else if (p.x >= 160 && p.x <= 239 && p.y >= 117 && p.y <= 178) {
currentNumber[index] = '6';
drawNumberInputScreen();
index += 1;
} else if (p.x >= 0 && p.x <= 79 && p.y >= 179 && p.y <= 240) {
currentNumber[index] = '7';
drawNumberInputScreen();
index += 1;
} else if (p.x >= 80 && p.x <= 159 && p.y >= 179 && p.y <= 240) {
currentNumber[index] = '8';
drawNumberInputScreen();
index += 1;
} else if (p.x >= 160 && p.x <= 239 && p.y >= 179 && p.y <= 240) {
currentNumber[index] = '9';
drawNumberInputScreen();
index += 1;
} else if (p.x >= 0 && p.x <= 79 && p.y >= 241 && p.y <= 302) {
stillEntering = false;
} else if (p.x >= 80 && p.x <= 159 && p.y >= 241 && p.y <= 302) {
currentNumber[index] = '0';
drawNumberInputScreen();
index += 1;
} else if (p.x >= 160 && p.x <= 239 && p.y >= 241 && p.y <= 302) {
stillEntering = false;
}
}
}
drawHomeScreen();
}
unsigned long sendingAlert() {
tft.fillScreen(BLACK);
unsigned long start = micros();
tft.setCursor(57,70);
tft.setTextColor(WHITE);
tft.setTextSize(3);
tft.print("Sending");
tft.setCursor(45,100);
tft.print("Alert To:");
tft.setCursor(60,150);
tft.setTextSize(2);
tft.print(currentNumber);
return micros() - start;
}
// Function that is responsable for sending the alert
void sendAlert(){
char message[141] = {'T','e','m','p','e','r','a', 't','u', 'r', 'e', 'i', 's', '8','0',' ','d','e','g','r','e','e','s'};
while (!alertSent) {
sendingAlert();
if (!fona.sendSMS(currentNumber, message)){
alertSent = false;
} else {
alertSent = true;
}
delay(500);
}
drawHomeScreen();
}
/* Function that updates the home display is the tempature or humidity has changed and sends the alert if the temperature
* is at the desired temperature
*/
void updateTemp() {
float currentTemp = dht.readTemperature(true);
float currentHumidity = dht.readHumidity();
if (currentTemp == 80.0) {
sendAlert();
}
if ((currentTemp - temp) >= 0.5 || (currentTemp - temp) <= -0.5) {
temp = currentTemp;
humidity = currentHumidity;
drawHomeScreen();
}
if ((currentHumidity - humidity) >= 0.5 || (currentHumidity - humidity) <= -0.5) {
temp = currentTemp;
humidity = currentHumidity;
drawHomeScreen();
}
}```
