Como dice el titulo Problema con Arduino uno CH340, tengo varios arduino unos, todos con el Chip atmega328 tipo DIP28, pero este que es un smd atmega328, y el ch340, tenia un problema, no lo podia usr con mi cnc, ya que conectava con el universal grbl, pero realizaba algunos pasos y despues hacia lo que queria, asi que decidi dejarlo para pruebas, ordenando encontre una tft 128x160, asi que le cargue un codigo de test y a cierto tiempo no siempre el mismo, se bloquea, y hay que apagarlo y prenderlo varias veces para que inicie, pero en los demas arduinos uno, podes dejarlo toda la noche y no se bloquean, sera falla del chip smd o vino enfermo de fabrica.
este es el codigo
/*
This is an example on how to use the 1.8" TFT 128x160 SPI ST7735 display using the Adafruit library.
ST7735 TFT SPI display pins for Arduino Uno/Nano:
* LED = 3.3V
* SCK = 13
* SDA = 11
* A0 = 8
* RESET = 9
* CS = 10
* GND = GND
* VCC = 5V
Another version marked as KMR-1.8 SPI:
This version only supports 3.3V logic so put a level shifter for all I/O pins, or a 2.2k resistor between
the display and arduino, and a 3.3k resistor to ground to create a simple voltage divider to produce a 3V output.
* LED- = GND
* LED+ = 15Ω resistor to 5V
* CS = 10
* SCL = 13
* SDA = 11
* A0 = 8
* RESET = 9
* VCC = 5V or 3.3V (the display has it's own 3.3V regulator)
* GND = GND
Hardware SPI Pins:
* Arduino Uno SCK=13, SDA=11
* Arduino Nano SCK=13, SDA=11
* Arduino Due SCK=76, SDA=75
* Arduino Mega SCK=52, SDA=51
SPI pin names can be confusing. These are the alternative names for the SPI pins:
MOSI = DIN = R/W = SDO = DI = SI = MTSR = SDA = D1 = SDI
CS = CE = RS = SS
DC = A0 = DO = DOUT = SO = MRST
RESET = RST
SCLK = CLK = E = SCK = SCL = D0
Libraries needed:
https://github.com/adafruit/Adafruit-ST7735-Library
https://github.com/adafruit/Adafruit-GFX-Library
Reference page for GFX Library: https://cdn-learn.adafruit.com/downloads/pdf/adafruit-gfx-graphics-library.pdf
Color is expressed in 16 bit with Hexadecimal value.
To select a particular color, go here and copy the "Hexadecimal 16 bit color depth value":
https://ee-programming-notepad.blogspot.com/2016/10/16-bit-color-generator-picker.html
Common colors:
* BLACK 0x0000
* BLUE 0x001F
* RED 0xF800
* GREEN 0x07E0
* CYAN 0x07FF
* MAGENTA 0xF81F
* YELLOW 0xFFE0
* WHITE 0xFFFF
A way to select a color is to write: "ST7735_BLACK", or "ST7735_BLUE", etc.
Or just write the code for the color. Either way, it works.
List of custom fonts: https://learn.adafruit.com/adafruit-gfx-graphics-library/using-fonts
Note about custom font:
* Text background color is not supported for custom fonts. For these reason you would need to draw a filled
rectangle before drawing the text. But this would cause the text to flicker, so I don't recommend using custom fonts
for components that refresh continuously.
* Using custom fonts slows down the arduino loop, so the refresh rate is lesser than using the standard font.
Sketch made by: InterlinkKnight
Last modification: 01/11/2018
*/
#include <Adafruit_GFX.h> // Include core graphics library
#include <Adafruit_ST7735.h> // Include Adafruit_ST7735 library to drive the display
#include <SPI.h>
// Declare pins for the display:
#define TFT_CS 10
#define TFT_RST 9 // You can also connect this to the Arduino reset in which case, set this #define pin to -1!
#define TFT_DC 8
// The rest of the pins are pre-selected as the default hardware SPI for Arduino Uno (SCK = 13 and SDA = 11)
// Create display:
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);
#include <Fonts/FreeSerif18pt7b.h> // Add a custom font
int Variable1; // Create a variable to have something dynamic to show on the display
void setup() // Start of setup
{
// Display setup:
// Use this initializer if you're using a 1.8" TFT
tft.initR(INITR_BLACKTAB); // Initialize a ST7735S chip, black tab
tft.fillScreen(ST7735_BLACK); // Fill screen with black
//tft.setRotation(0); // Set orientation of the display. Values are from 0 to 3. If not declared, orientation would be 0,
// which is portrait mode.
tft.setTextWrap(false); // By default, long lines of text are set to automatically “wrap” back to the leftmost column.
// To override this behavior (so text will run off the right side of the display - useful for
// scrolling marquee effects), use setTextWrap(false). The normal wrapping behavior is restored
// with setTextWrap(true).
// We are going to print on the display everything that is static on the setup, to leave the loop free for dynamic elements:
// Write to the display the text "Hello":
tft.setCursor(0, 0); // Set position (x,y)
tft.setTextColor(ST7735_WHITE); // Set color of text. First is the color of text and after is color of background
tft.setTextSize(3); // Set text size. Goes from 0 (the smallest) to 20 (very big)
tft.println("Hello"); // Print a text or value
// Start using a custom font:
tft.setFont(&FreeSerif18pt7b); // Set a custom font
tft.setTextSize(0); // Set text size. We are using custom font so you should always set text size as 0
// Write to the display the text "World":
tft.setCursor(0, 50); // Set position (x,y)
tft.setTextColor(ST7735_RED); // Set color of text. We are using custom font so there is no background color supported
tft.println("Adrian!"); // Print a text or value
// Stop using a custom font:
tft.setFont(); // Reset to standard font, to stop using any custom font previously set
// Draw rectangle:
tft.drawRect(0, 60, 60, 30, ST7735_CYAN); // Draw rectangle (x,y,width,height,color)
// It draws from the location to down-right
// Draw rounded rectangle:
tft.drawRoundRect(68, 60, 60, 30, 10, ST7735_CYAN); // Draw rounded rectangle (x,y,width,height,radius,color)
// It draws from the location to down-right
// Draw triangle:
tft.drawTriangle(60,120, 70,94, 80,120, ST7735_YELLOW); // Draw triangle (x0,y0,x1,y1,x2,y2,color)
// Draw filled triangle:
tft.fillTriangle(100,120, 110,94, 120,120, ST7735_CYAN); // Draw filled triangle (x0,y0,x1,y1,x2,y2,color)
// Draw line:
tft.drawLine(0, 125, 127, 125, ST7735_CYAN); // Draw line (x0,y0,x1,y1,color)
// Draw circle:
tft.drawCircle(15, 144, 14, ST7735_GREEN); // Draw circle (x,y,radius,color)
// Draw a filled circle:
tft.fillCircle(60, 144, 14, ST7735_BLUE); // Draw circle (x,y,radius,color)
// Draw rounded rectangle and fill:
tft.fillRoundRect(88, 130, 40, 27, 5, 0xF81B); // Draw rounded filled rectangle (x,y,width,height,color)
} // End of setup
void loop() // Start of loop
{
Variable1++; // Increase variable by 1
if(Variable1 > 150) // If Variable1 is greater than 150
{
Variable1 = 0; // Set Variable1 to 0
}
// Convert Variable1 into a string, so we can change the text alignment to the right:
// It can be also used to add or remove decimal numbers.
char string[10]; // Create a character array of 10 characters
// Convert float to a string:
dtostrf(Variable1, 3, 0, string); // (<variable>,<amount of digits we are going to use>,<amount of decimal digits>,<string name>)
// We are going to print on the display everything that is dynamic on the loop, to refresh continuously:
// Write to the display the Variable1 with left text alignment:
tft.setCursor(13, 67); // Set position (x,y)
tft.setTextColor(ST7735_YELLOW, ST7735_BLACK); // Set color of text. First is the color of text and after is color of background
tft.setTextSize(2); // Set text size. Goes from 0 (the smallest) to 20 (very big)
tft.println(Variable1); // Print a text or value
// There is a problem when we go, for example, from 100 to 99 because it doesn't automatically write a background on
// the last digit we are not longer refreshing. We need to check how many digits are and fill the space remaining.
if(Variable1 < 10) // If Variable1 is less than 10...
{
// Fill the other digit with background color:
tft.fillRect(23, 67, 12, 18, ST7735_BLACK); // Draw filled rectangle (x,y,width,height,color)
}
if(Variable1 < 100) // If Variable1 is less than 100...
{
// Fill the other digit with background color:
tft.fillRect(36, 67, 12, 18, ST7735_BLACK); // Draw filled rectangle (x,y,width,height,color)
}
// Write to the display the string with right text alignment:
tft.setCursor(81, 67); // Set position (x,y)
tft.setTextColor(ST7735_GREEN, ST7735_BLACK); // Set color of text. First is the color of text and after is color of background
tft.setTextSize(2); // Set text size. Goes from 0 (the smallest) to 20 (very big)
tft.println(string); // Print a text or value
// We are going to write the Variable1 with a custom text, so you can see the issues:
// Draw a black square in the background to "clear" the previous text:
// This is because we are going to use a custom font, and that doesn't support brackground color.
// We are basically printing our own background. This will cause flickering, though.
tft.fillRect(0, 90, 55, 34, ST7735_BLACK); // Draw filled rectangle (x,y,width,height,color)
// Start using a custom font:
tft.setFont(&FreeSerif18pt7b); // Set a custom font
tft.setTextSize(0); // Set text size. We are using custom font so you should always set text size as 0
// Write to the display the Variable1:
tft.setCursor(0, 120); // Set position (x,y)
tft.setTextColor(ST7735_MAGENTA); // Set color of text. We are using custom font so there is no background color supported
tft.println(Variable1); // Print a text or value
// Stop using a custom font:
tft.setFont(); // Reset to standard font, to stop using any custom font previously set
} // End of loop```