OK So I see two issues.
1. You should use SDMMC on Wrover-Kit
2. If you want to use SPI and use the LCD as well, you need to init first a new SPI port (HSPI) and then init the SD card to use that port.
LCD and SD do not share pins and the SPI port is going to the device initialised last.
WROVER Dev Kit 4.1 LCD and SD Not Working
- ESP_Me-no-dev
- Posts: 80
- Joined: Mon Jan 04, 2016 6:30 pm
Re: WROVER Dev Kit 4.1 LCD and SD Not Working
Hello ESP_Me-no-dev
Many thanks for your helpfull reply.
I will test your notes.
I will revert .
Kind regards,
ilioSS
Many thanks for your helpfull reply.
I will test your notes.
I will revert .
Kind regards,
ilioSS
- Segmentation Fault
- Posts: 22
- Joined: Sat Apr 04, 2020 1:49 am
Re: WROVER Dev Kit 4.1 LCD and SD Not Working
Hi ESP_Me-no-dev, thank you for looking into this.
Your advice on both SD and LCD on SPI absolutely makes sense, there should be different names for different SPI buses, duh!!
Doing that helps, but there is still an issue.
My modified code:
The result is SD working normally, but the LCD screen is white.
- Then I tried removing the SD card and rebooting. The LCD is working!!!
- I put back the SD card without rebooting, SD and SdFat working, lcd black but is not printing anything new.
- Removing the SD again, the LCD is working.
But because 1 picture is 0x3E7 words:
So the question is: Is it possible to have the (SPI)LCD and SD working simultaneously?
(I have read that some ppl are suggesting removing R167. Is that recommended? That 0Ω resistor is connecting the CD pin of the SD to the D/C pin of the LCD and then this line is pulled up with a 10k. What are the drawbacks of having the CD pin floating? If R167 is removed and then CD is pulled up to 3V3 from another root would that work or does SD need IO21?)
Your advice on both SD and LCD on SPI absolutely makes sense, there should be different names for different SPI buses, duh!!
Doing that helps, but there is still an issue.
My modified code:
Code: Select all
#include <WiFiClient.h>
#include <WiFi.h>
#include <esp_wifi.h>
#include <ESP32Ping.h>
#include <HTTPClient.h>
#include <WebServer.h>
#include <ESPmDNS.h>
#define FS_NO_GLOBALS
#include <SdFat.h>
#include <sdios.h>
#include <WROVER_KIT_LCD.h>
#include <FreeStack.h>
#include <My_library.h>
#include <SPI.h>
#include <SD.h>
int SERIAL_BAUD_RATE = 1500000;
#define SD_CS 13
#define RGB_LED_RED 0
#define RGB_LED_GREEN 2
#define RGB_LED_BLUE 4
SPIClass SD_SPI(HSPI);
WROVER_KIT_LCD tft; //object responsible for display control
#define USE_SDIO 0
SdFat sd((SPIClass*)&SD_SPI);
// global for card size
uint32_t cardSize;
// global for card erase size
uint32_t eraseSize;
// store error strings in flash
#define sdErrorMsg(msg) sd.errorPrint(F(msg));
void setup()
{
// SET LEDs
pinMode(RGB_LED_BLUE, OUTPUT);
digitalWrite(RGB_LED_BLUE, LOW);
pinMode(RGB_LED_RED, OUTPUT);
digitalWrite(RGB_LED_RED, LOW);
// SET Serial
Serial.begin(SERIAL_BAUD_RATE);
// Set SD
SD_SPI.begin(14, 2, 15/*, SD_CS*/); // The bultin SD card SPI for WROVER
// Initialize SD
Serial.print("Initializing the SD card... ");
if (SD.begin(SD_CS, SD_SPI))
{
Serial.println("OK!");
// check for index.htm file
Serial.print("Checking for index.htm... ");
if (SD.exists("/index.htm"))
{
Serial.println("OK!");
}
else
{
Serial.println("Failed!");
}
}
else
{
Serial.println("Failed!");
}
// CHeck sd fat
Serial.println("Initialising sd FAT:");
uint32_t t = millis();
#if USE_SDIO
if (!sd.cardBegin(SD_CS, SD_SCK_MHZ(10)))
{
Serial.print("cardBegin failed in #if USE_SDIO");
sdErrorMsg("\ncardBegin failed");
}
#else // USE_SDIO
if (!sd.cardBegin(SD_CS, SD_SCK_MHZ(10)))
{
Serial.print("cardBegin failed in #else (of #if USE_SDIO)");
sdErrorMsg("cardBegin failed");
}
else
{
if (!sd.fsBegin())
{
sdErrorMsg("\nFile System initialization failed.\n");
}
}
#endif // USE_SDIO
t = millis() - t;
Serial.print("init time: ");
Serial.print(t); Serial.println("ms");
// Set LCD
tft.begin();
tft.setRotation(1); // rotate to landscape
// Write on LCD
tft.fillScreen(WROVER_BLACK); // paints the entire canvas
tft.setCursor(0, 0); // position the cursor at the origin
tft.setTextColor(WROVER_WHITE);
tft.setTextSize(1); // font size - 1
tft.println("Chip: ESP32");
tft.println("Board: ESP-WROVER-KIT V4.1");
uint64_t chipid = ESP.getEfuseMac();
tft.printf("Chip ID = %04X", (uint16_t)(chipid>>32));//print High 2 bytes
tft.printf("%08X",(uint32_t)chipid);//print Low 4bytes.
tft.println();
tft.print("Chip Size: "); tft.println(ESP.getFlashChipSize());
tft.print("Chip Speed: "); tft.println(ESP.getFlashChipSpeed());
tft.print("Chip Mode: "); tft.println(ESP.getFlashChipMode());
tft.print("Running setup and loop on core: "); tft.println(xPortGetCoreID());
}
void loop ()
{
delay(1000);
tft.println(".");
Check_Serial_income();
}
void Check_Serial_income()
{
if (Serial.available() > 0)
{
String IncomingData = Recieve_serial('\n');
if (IncomingData == "CHECK_SD_FAT" )
{
Serial.println("Initialising sd FAT:");
uint32_t t = millis();
if (!sd.cardBegin(SD_CS, SD_SCK_MHZ(10)))
{
Serial.print("cardBegin failed in #else (of #if USE_SDIO)");
sdErrorMsg("cardBegin failed");
}
else
{
if (!sd.fsBegin())
{
sdErrorMsg("\nFile System initialization failed.\n");
}
}
t = millis() - t;
Serial.print("init time: ");
Serial.print(t); Serial.println("ms");
}
else if (IncomingData.substring(0, 8) == "LIST_SD:" )
{
String arg_ = IncomingData.substring(8, IncomingData.length());
if (SD.begin(SD_CS, SD_SPI))
{
fs::File dir = SD.open(arg_);
// return the command received
Serial.println("LIST_SD:" + arg_);
if (!dir.isDirectory())
{
dir.close();
Serial.println("NOT DIR");
Serial.println("---END---");
return;
}
dir.rewindDirectory();
// return the requested path
if (arg_ != "/" && arg_.charAt(0) != '/')
{
Serial.print("/");
}
for (int cnt = 0; true; ++cnt)
{
fs::File entry = dir.openNextFile();
if (!entry)
{
break;
}
String _name = entry.name();
if (_name.charAt(0) == '/')
{
_name = _name.substring(1, _name.length());
}
Serial.print(_name);
if (cnt > 0 && entry.isDirectory())
{
Serial.println("/");
}
else
{
Serial.println();
}
entry.close();
}
dir.close();
Serial.println("---END---");
}
else
{
Serial.println("SD not found.");
return; // init failed
}
}
else if (IncomingData.substring(0, 10) == "WRITE_LCD:")
{
String LCD_TEXT = IncomingData.substring(10, IncomingData.length());
Serial.println("Accepted text for LCD = " + LCD_TEXT);
tft.print(LCD_TEXT);
}
else
{
Serial.println("Unknown command:'" + IncomingData + "'" );
Serial.print("0x: ");
for (int i = 0; i < IncomingData.length(); i++)
{
Serial.print(IncomingData.charAt(i), HEX);
if (i < IncomingData.length() - 1)
{
Serial.print("-");
}
}
if (IncomingData.length() > 0)
{
Serial.println();
}
}
}
}
- Then I tried removing the SD card and rebooting. The LCD is working!!!
- I put back the SD card without rebooting, SD and SdFat working, lcd black but is not printing anything new.
- Removing the SD again, the LCD is working.
But because 1 picture is 0x3E7 words:
So the question is: Is it possible to have the (SPI)LCD and SD working simultaneously?
(I have read that some ppl are suggesting removing R167. Is that recommended? That 0Ω resistor is connecting the CD pin of the SD to the D/C pin of the LCD and then this line is pulled up with a 10k. What are the drawbacks of having the CD pin floating? If R167 is removed and then CD is pulled up to 3V3 from another root would that work or does SD need IO21?)
Re: WROVER Dev Kit 4.1 LCD and SD Not Working
Hello ESP_Me_no_dev,
After two day,s of wrestling with my TFT display and various pinout sugestions and all I was able to find on the internet I must admit no succes.
At the moment I have a working set-up so realy the motivation to solve the problem is not there howeever it still bodders me and sorry for your effort.
So my final moment to throw the towel is;
Confusing pin-out.
SD as you told HSPI CS 15, CLK 14, MISO 12, MOSI 13 ok no problem
The TFT: VSPI RST 19, CS 5, D/C 22 (conflict with my sensor on 21 and 22 SCL/SDA) , DIN 23, clk 18
as far as I understand no pins should be used by both.
For now I,am happy.
Thanks .
Regards ilioSS
After two day,s of wrestling with my TFT display and various pinout sugestions and all I was able to find on the internet I must admit no succes.
At the moment I have a working set-up so realy the motivation to solve the problem is not there howe
Code: Select all
// *************** AsyncWebserver *******************
#include <AsyncEventSource.h>
#include <ESPAsyncWebServer.h>
#include <AsyncTCP.h>
//**************** WIFI *****************************
#include <WiFi.h>
#include <WiFiUdp.h> // nodig voor de tijd NTP
AsyncWebServer server(80);
//**************** TIME ******************************
#include <time.h>
long timezone = 1;
byte daysavetime = 1;
//**************** SPIFFS ****************************
#include <SPIFFS.h> // SPIFFS file flashen
//**************** ESPmDNS **************************
#include <ESPmDNS.h>
//**************** FS *******************************
#include <FS.h>
#include <FSImpl.h>
#include <vfs_api.h>
File fsUploadFile; // a File variable to temporarily store the received file
//**************** OTA ******************************
#include <ArduinoOTA.h> // Over the air programming
const char* ssid = "mmm"; // Replace with your network credentials
const char* password = "nnnn";
//************** Display ****************************
#include <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library for ST7735
#define TFT_CS 15 // Chip Select
#define TFT_RST 12 // Or set to -1 and connect to Arduino RESET pin
#define TFT_DC 4 // D/C
#define TFT_BACKLIGHT 25 // Backlight
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);
// *************** SD ******************************
#include <SD.h>
#include <SPI.h>
#define CS_PIN 2 // chipselect pin gedefinieerd SD card
//**************** BME280 ****************************
#include <Wire.h>
#include <Adafruit_BME280.h>
#include <Adafruit_Sensor.h>
#define SEALEVELPRESSURE_HPA (1013.25)
Adafruit_BME280 bme; // I2C SDA=21 en SCL=22
// *************** DALLAS temp. *********************
#include <OneWire.h>
#include <DallasTemperature.h>
#define TEMP_SENSOR_PIN 5
OneWire oneWire(TEMP_SENSOR_PIN); // Set up a OneWire instance to communicate with OneWire devices
DallasTemperature sensors(&oneWire); // Create an instance of the temperature sensor class
const int ledPin = 13; // Set LED GPIO13
String ledState; // Stores LED state
String yy;
String mm;
String dd;
String hr;
String mi;
String se;
String dataMessage; // met gegevens om te loggen
String headerMessage; // file header met colom gegevens datum, tijd, tempbi,hum,press,tempbu
String tempbi; // van BME
String humidity; // van BME
String pressure; // van BME
String tempbu;
String temperature;
long previousMillis = 0; // tbv display wissel
long interval = 120000; // tbv display wissel
// *************** BME-280 ***************************
String getTemperature() { // Variable to store the HTTP request String header;
float temperature = bme.readTemperature();
Serial.println(temperature);
return String(temperature);
}
String getHumidity() {
float humidity = bme.readHumidity();
Serial.println(humidity);
return String(humidity);
}
String getPressure() {
float pressure = bme.readPressure()/ 100.0F;
Serial.println(pressure);
return String(pressure);
}
//**************** DS18B20 ***************************
String readDSTemperatureC() { // Call sensors.requestTemperatures() to issue a global temperature and Requests to all devices on the bus
sensors.requestTemperatures();
delay(20);
float tempbu = sensors.getTempCByIndex(0);
delay(20);
Serial.println(tempbu);
return String(tempbu);
}
//**************** LED etc.**************************
String processor(const String& var){ // Replaces placeholder with LED state value
Serial.println(var);
if(var == "STATE"){ // var in index.html page (id)
if(digitalRead(ledPin)){
ledState = "ON";
}
else{
ledState = "OFF";
}
Serial.print(ledState);
return ledState;
}
else if (var == "TEMPERATURE"){ // var in index.html page (id)
return getTemperature(); // BME-280 temperature binnen
}
else if (var == "HUMIDITY"){ // var in index.html page (id)
return getHumidity();
}
else if (var == "PRESSURE"){ // var in index.html page (id)
return getPressure();
}
else if (var == "TEMPBU"){ // var in index.html page (id)
return readDSTemperatureC(); // DS18B20 buiten
}
}
//**************** SET-UP ****************************
void setup(){
Serial.begin(115200);
pinMode(TFT_BACKLIGHT, OUTPUT);
digitalWrite(TFT_BACKLIGHT, HIGH); // Backlight on
pinMode(ledPin, OUTPUT); // bool status;
pinMode(2, OUTPUT);
SPI.begin();
sensors.begin(); // Start up the DS18B20 library
bme.begin();
if (!bme.begin(0x76)) {
Serial.println("Could not find a valid BME280 sensor, check wiring!");
while (1);
}
initSD();
startWIFI();
initTFT();
startOTA();
if(!SPIFFS.begin()){ // Initialize SPIFFS
Serial.println("An Error has occurred while mounting SPIFFS");
return;
}
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){ // Route for root / web page
request->send(SPIFFS, "/index.html", String(), false, processor);
});
server.on("/favicon.ico", HTTP_GET, [](AsyncWebServerRequest *request){ // was /favicon.ico
request->send(SPIFFS, "/favicon.png", "image/png");
});
server.on("/style.css", HTTP_GET, [](AsyncWebServerRequest *request){ // Route to load style.css file
request->send(SPIFFS, "/style.css", "text/css");
});
server.on("/on", HTTP_GET, [](AsyncWebServerRequest *request){ // Route to set GPIO to HIGH
digitalWrite(ledPin, HIGH);
request->send(SPIFFS, "/index.html", String(), false, processor);
});
server.on("/off", HTTP_GET, [](AsyncWebServerRequest *request){ // Route to set GPIO to LOW
digitalWrite(ledPin, LOW);
request->send(SPIFFS, "/index.html", String(), false, processor);
});
server.on("/temperature", HTTP_GET, [](AsyncWebServerRequest *request){ // Route to the BME Temperature
request->send_P(200, "text/plain", getTemperature().c_str());
});
server.on("/humidity", HTTP_GET, [](AsyncWebServerRequest *request){ // Route to the BME Humidity
request->send_P(200, "text/plain", getHumidity().c_str());
});
server.on("/pressure", HTTP_GET, [](AsyncWebServerRequest *request){ // Route to the BME Pressure
request->send_P(200, "text/plain", getPressure().c_str());
});
server.on("/tempbu", HTTP_GET, [](AsyncWebServerRequest *request){ // Route to the DS18B20 Temperature
request->send_P(200, "text/plain", readDSTemperatureC().c_str());
});
server.begin(); // Start server
}
//**************** LOOP ****************************
void loop(){
ArduinoOTA.handle();
unsigned long currentMillis = millis();
Serial.println("Contacting Time Server");
configTime(3600*timezone, daysavetime*3600, "time.nist.gov", "0.pool.ntp.org", "1.pool.ntp.org");
struct tm tmstruct ;
delay(200);
tmstruct.tm_year = 0;
getLocalTime(&tmstruct, 5000);
Serial.printf("\nNow is : %d-%02d-%02d %02d:%02d:%02d\n",(tmstruct.tm_year)+1900,( tmstruct.tm_mon)+1, tmstruct.tm_mday,tmstruct.tm_hour , tmstruct.tm_min, tmstruct.tm_sec);
Serial.println("");
yy = (tmstruct.tm_year)+1900;
mm = ( tmstruct.tm_mon)+1;
dd = tmstruct.tm_mday;
hr = (tmstruct.tm_hour);
mi = (tmstruct.tm_min);
se = (tmstruct.tm_sec);
getReadings();
delay(20);
getBME();
delay(20);
displayText();
String path = "/" + mm + "-" + dd + ".csv"; // format maand dag
headerMessage = "Tijd, temperature,humidity,pressure,tempbu \n"; // tijd,temperature, humidity, pressure, tempbu
dataMessage = String(hr) + ":" + String(mi) + ":" + String(se) + "," + String(temperature) + "," + String(humidity) + "," + String(pressure) + "," + String(tempbu)+ "\r\n"; // uur:minuut:sec,temperature, humidity, pressure, tempbu
File file = SD.open(path.c_str());
if(!file) {
Serial.println("File doens't exist");
Serial.println("Creating file...");
writeFile(SD, path.c_str(), headerMessage.c_str());
}
else {
Serial.println("File already exists");
}
file.close();
if (dd != dd) { // nieuwe dag
writeFile(SD, path.c_str(), headerMessage.c_str());
}
if (currentMillis - previousMillis > interval) {
appendFile(SD, path.c_str(), dataMessage.c_str());// SD
previousMillis = currentMillis;
}
}
//**************** VOIDS *****************************
void startOTA(){
ArduinoOTA
.onStart([]() {
String type;
if (ArduinoOTA.getCommand() == U_FLASH)
type = "sketch";
else // U_SPIFFS
type = "filesystem";
Serial.println("Start updating " + type); // NOTE: if updating SPIFFS this would be the place to unmount SPIFFS using SPIFFS.end()
})
.onEnd([]() {
Serial.println("\nEnd");
})
.onProgress([](unsigned int progress, unsigned int total) {
Serial.printf("Progress: %u%%\r", (progress / (total / 100)));
})
.onError([](ota_error_t error) {
Serial.printf("Error[%u]: ", error);
if (error == OTA_AUTH_ERROR) Serial.println("Auth Failed");
else if (error == OTA_BEGIN_ERROR) Serial.println("Begin Failed");
else if (error == OTA_CONNECT_ERROR) Serial.println("Connect Failed");
else if (error == OTA_RECEIVE_ERROR) Serial.println("Receive Failed");
else if (error == OTA_END_ERROR) Serial.println("End Failed");
});
ArduinoOTA.begin();
Serial.println("Ready");
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
}
void initTFT(){
tft.initR(INITR_BLACKTAB); // initialize a ST7735S chip, black tab
tft.setTextWrap(false); // Allow text to run off right edge
tft.fillScreen(ST77XX_BLACK);
}
void displayText() {
int x;
x=random(0,100);
tft.setRotation(-45);
tft.fillScreen(ST77XX_BLACK);
tft.setCursor(0, x);
tft.setTextColor(ST77XX_RED);
tft.setTextSize(2);
tft.print("Temp:");
tft.setTextColor(ST77XX_YELLOW);
tft.setTextSize(2);
tft.println(temperature);
delay(1500);
tft.fillScreen(ST77XX_BLACK);
x=random(0,100);
tft.setCursor(0,x);
tft.setTextColor(ST77XX_GREEN);
tft.setTextSize(2);
tft.print("Hum :");
tft.setTextColor(ST77XX_GREEN);
tft.setTextSize(2);
tft.println(humidity);
delay(1500);
tft.fillScreen(ST77XX_BLACK);
x=random(0,100);
tft.setCursor(0,x);
tft.setTextColor(ST77XX_BLUE);
tft.setTextSize(2);
tft.print("Pres:");
tft.setTextColor(ST77XX_BLUE);
tft.println(pressure);
delay(1500);
tft.fillScreen(ST77XX_BLACK);
x=random(0,100);
tft.setCursor(0,x);
tft.setTextColor(ST77XX_RED);
tft.setTextSize(2);
tft.print("Tempbu:");
tft.setTextColor(ST77XX_YELLOW);
tft.setTextSize(2);
tft.println(tempbu);
delay(2500);
tft.fillScreen(ST77XX_GREEN);
x=random(0,70);
tft.setCursor(20, x);
tft.setTextSize(2);
tft.setTextColor(ST77XX_BLACK);
tft.println("Datum:");
tft.println("");
tft.print(yy);
tft.print(":");
tft.print(mm);
tft.print(":");
tft.println(dd);
delay(2500);
tft.fillScreen(ST77XX_GREEN);
x=random(0,70);
tft.setCursor(30, x);
tft.println("Time:");
tft.println("");
tft.print(hr);
tft.print("-");
tft.print(mi);
tft.print("-");
tft.println(se);
delay(2500);
}
void initSD() {
SD.begin(2);
Serial.print("Initializing SD card...");
if (!SD.begin(2))
{
Serial.println("Card failed, or not present"); // see if the card is present and can be initialized:
while (1) ; // don't do anything more: nu mag door ook als er geen kaart is
}
Serial.println("card initialized.");
delay(10);
Serial.println("\r\n");
}
void startWIFI() { // Connect to Wi-Fi
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password); {
while (WiFi.waitForConnectResult() != WL_CONNECTED) { // while (WiFi.status() != WL_CONNECTED)
delay(1000);
Serial.println("Connecting to WiFi..");
Serial.println(WiFi.localIP()); // Print ESP32 Local IP Address
Serial.println("Ready");
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
}
}
}
void getReadings(){ // Function to get DS18B20 temperature
sensors.requestTemperatures();
delay(30);
tempbu = sensors.getTempCByIndex(0); // Temperature in Celsius
delay(30);
}
void getBME() { // BME-280 readings
temperature = bme.readTemperature();
delay(20);
humidity = bme.readHumidity();
delay(20);
pressure = bme.readPressure()/ 100.0F;
delay(20);
}
void startmDNS() {
if (!MDNS.begin("esp32")) {
Serial.println("Error setting up MDNS responder!");
while(1) {
delay(100);
}
}
Serial.println("mDNS responder started");
server.begin(); // Start TCP (HTTP) server
Serial.println("TCP server started");
MDNS.addService("http", "tcp", 80); // Add service to MDNS-SD
}
void appendFile(fs::FS &fs, const char * path, const char * message) { // Append data to the SD card (DON'T MODIFY THIS FUNCTION)
Serial.println("");
Serial.printf("Appending to file: %s\n", path);
File file = fs.open(path, FILE_APPEND);
if(!file) {
Serial.println("Failed to open file for appending");
return;
}
if(file.print(message)) {
Serial.println("Message");
Serial.print(dataMessage.c_str());
Serial.println("Appended");
} else {
Serial.println("Append failed");
}
file.close();
}
void writeFile(fs::FS &fs, const char * path, const char * message) { // Write to the SD card (DON'T MODIFY THIS FUNCTION)
Serial.printf("Writing file: %s\n", path);
File file = fs.open(path, FILE_WRITE);
if(!file) {
Serial.println("Failed to open file for writing");
return;
}
if(file.print(message)) {
Serial.println("File written");
} else {
Serial.println("Write failed");
}
file.close();
}
So my final moment to throw the towel is;
Confusing pin-out.
SD as you told HSPI CS 15, CLK 14, MISO 12, MOSI 13 ok no problem
The TFT: VSPI RST 19, CS 5, D/C 22 (conflict with my sensor on 21 and 22 SCL/SDA) , DIN 23, clk 18
as far as I understand no pins should be used by both.
For now I,am happy.
Thanks .
Regards ilioSS
- Segmentation Fault
- Posts: 22
- Joined: Sat Apr 04, 2020 1:49 am
Re: WROVER Dev Kit 4.1 LCD and SD Not Working
Segmentation Fault wrote: ↑Tue Apr 28, 2020 11:17 pmHi ESP_Me-no-dev, thank you for looking into this.
Your advice on both SD and LCD on SPI absolutely makes sense, there should be different names for different SPI buses, duh!!
Doing that helps, but there is still an issue.
My modified code:The result is SD working normally, but the LCD screen is white.Code: Select all
#include <WiFiClient.h> #include <WiFi.h> #include <esp_wifi.h> #include <ESP32Ping.h> #include <HTTPClient.h> #include <WebServer.h> #include <ESPmDNS.h> #define FS_NO_GLOBALS #include <SdFat.h> #include <sdios.h> #include <WROVER_KIT_LCD.h> #include <FreeStack.h> #include <My_library.h> #include <SPI.h> #include <SD.h> int SERIAL_BAUD_RATE = 1500000; #define SD_CS 13 #define RGB_LED_RED 0 #define RGB_LED_GREEN 2 #define RGB_LED_BLUE 4 SPIClass SD_SPI(HSPI); WROVER_KIT_LCD tft; //object responsible for display control #define USE_SDIO 0 SdFat sd((SPIClass*)&SD_SPI); // global for card size uint32_t cardSize; // global for card erase size uint32_t eraseSize; // store error strings in flash #define sdErrorMsg(msg) sd.errorPrint(F(msg)); void setup() { // SET LEDs pinMode(RGB_LED_BLUE, OUTPUT); digitalWrite(RGB_LED_BLUE, LOW); pinMode(RGB_LED_RED, OUTPUT); digitalWrite(RGB_LED_RED, LOW); // SET Serial Serial.begin(SERIAL_BAUD_RATE); // Set SD SD_SPI.begin(14, 2, 15/*, SD_CS*/); // The bultin SD card SPI for WROVER // Initialize SD Serial.print("Initializing the SD card... "); if (SD.begin(SD_CS, SD_SPI)) { Serial.println("OK!"); // check for index.htm file Serial.print("Checking for index.htm... "); if (SD.exists("/index.htm")) { Serial.println("OK!"); } else { Serial.println("Failed!"); } } else { Serial.println("Failed!"); } // CHeck sd fat Serial.println("Initialising sd FAT:"); uint32_t t = millis(); #if USE_SDIO if (!sd.cardBegin(SD_CS, SD_SCK_MHZ(10))) { Serial.print("cardBegin failed in #if USE_SDIO"); sdErrorMsg("\ncardBegin failed"); } #else // USE_SDIO if (!sd.cardBegin(SD_CS, SD_SCK_MHZ(10))) { Serial.print("cardBegin failed in #else (of #if USE_SDIO)"); sdErrorMsg("cardBegin failed"); } else { if (!sd.fsBegin()) { sdErrorMsg("\nFile System initialization failed.\n"); } } #endif // USE_SDIO t = millis() - t; Serial.print("init time: "); Serial.print(t); Serial.println("ms"); // Set LCD tft.begin(); tft.setRotation(1); // rotate to landscape // Write on LCD tft.fillScreen(WROVER_BLACK); // paints the entire canvas tft.setCursor(0, 0); // position the cursor at the origin tft.setTextColor(WROVER_WHITE); tft.setTextSize(1); // font size - 1 tft.println("Chip: ESP32"); tft.println("Board: ESP-WROVER-KIT V4.1"); uint64_t chipid = ESP.getEfuseMac(); tft.printf("Chip ID = %04X", (uint16_t)(chipid>>32));//print High 2 bytes tft.printf("%08X",(uint32_t)chipid);//print Low 4bytes. tft.println(); tft.print("Chip Size: "); tft.println(ESP.getFlashChipSize()); tft.print("Chip Speed: "); tft.println(ESP.getFlashChipSpeed()); tft.print("Chip Mode: "); tft.println(ESP.getFlashChipMode()); tft.print("Running setup and loop on core: "); tft.println(xPortGetCoreID()); } void loop () { delay(1000); tft.println("."); Check_Serial_income(); } void Check_Serial_income() { if (Serial.available() > 0) { String IncomingData = Recieve_serial('\n'); if (IncomingData == "CHECK_SD_FAT" ) { Serial.println("Initialising sd FAT:"); uint32_t t = millis(); if (!sd.cardBegin(SD_CS, SD_SCK_MHZ(10))) { Serial.print("cardBegin failed in #else (of #if USE_SDIO)"); sdErrorMsg("cardBegin failed"); } else { if (!sd.fsBegin()) { sdErrorMsg("\nFile System initialization failed.\n"); } } t = millis() - t; Serial.print("init time: "); Serial.print(t); Serial.println("ms"); } else if (IncomingData.substring(0, 8) == "LIST_SD:" ) { String arg_ = IncomingData.substring(8, IncomingData.length()); if (SD.begin(SD_CS, SD_SPI)) { fs::File dir = SD.open(arg_); // return the command received Serial.println("LIST_SD:" + arg_); if (!dir.isDirectory()) { dir.close(); Serial.println("NOT DIR"); Serial.println("---END---"); return; } dir.rewindDirectory(); // return the requested path if (arg_ != "/" && arg_.charAt(0) != '/') { Serial.print("/"); } for (int cnt = 0; true; ++cnt) { fs::File entry = dir.openNextFile(); if (!entry) { break; } String _name = entry.name(); if (_name.charAt(0) == '/') { _name = _name.substring(1, _name.length()); } Serial.print(_name); if (cnt > 0 && entry.isDirectory()) { Serial.println("/"); } else { Serial.println(); } entry.close(); } dir.close(); Serial.println("---END---"); } else { Serial.println("SD not found."); return; // init failed } } else if (IncomingData.substring(0, 10) == "WRITE_LCD:") { String LCD_TEXT = IncomingData.substring(10, IncomingData.length()); Serial.println("Accepted text for LCD = " + LCD_TEXT); tft.print(LCD_TEXT); } else { Serial.println("Unknown command:'" + IncomingData + "'" ); Serial.print("0x: "); for (int i = 0; i < IncomingData.length(); i++) { Serial.print(IncomingData.charAt(i), HEX); if (i < IncomingData.length() - 1) { Serial.print("-"); } } if (IncomingData.length() > 0) { Serial.println(); } } } }
- Then I tried removing the SD card and rebooting. The LCD is working!!!
- I put back the SD card without rebooting, SD and SdFat working, lcd black but is not printing anything new.
- Removing the SD again, the LCD is working.
But because 1 picture is 0x3E7 words:
So the question is: Is it possible to have the (SPI)LCD and SD working simultaneously?
(I have read that some ppl are suggesting removing R167. Is that recommended? That 0Ω resistor is connecting the CD pin of the SD to the D/C pin of the LCD and then this line is pulled up with a 10k. What are the drawbacks of having the CD pin floating? If R167 is removed and then CD is pulled up to 3V3 from another root would that work or does SD need IO21?)
Bump!
Any news on the matter?
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