Has anyone ever had any success getting a cheap ST7735 based display to work with an Argon (Firmware v2.10)? I can see some similar threads regarding Photons.
The device in question is the same as used in this blog:
After failing to get it to display anything (just the white screen), I tried it on an Arduino Nano and it worked fine. The wiring I have used is (let me know if there is a table function on this BB!):
Screen NanoPin NanoPinDesc Argon ArgonPinDesc
1 GND GND GND GND GND
2 VSS 5V 5V 3V3 3v3
3 SCK D13 SCK D13 SPI_SCK
4 SDA D11 MOSI D12 SPI_MOSI
5 RES D12 MISO D11 SPI_MISO
6 DC D8 D8 D8 D8
7 CS D10 SS A5 SPI_SS
8 LEDA 3v3 3v3 3v3 3v3
On the Argon, the code I have used (found on another post)
#include <Adafruit_ST7735.h> // Hardware-specific library for ST7735
#define TFT_CS A5
#define TFT_RST D11
#define TFT_DC D8
//#define COLOR1 ST7735_WHITE
//#define COLOR2 ST7735_BLACK
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);
void setup()
{
tft.initR( INITR_GREENTAB );
tft.fillScreen(ST7735_BLACK);
tft.setCursor(0, 0);
tft.setTextColor(ST7735_WHITE);
tft.setTextWrap(true);
tft.print("Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur adipiscing ante sed nibh tincidunt feugiat. Maecenas enim massa, fringilla");
tft.drawLine(0, 0, tft.width()-1, tft.height()-1, ST7735_YELLOW);
tft.drawLine(tft.width()-1, 0, 0, tft.height()-1, ST7735_YELLOW);
tft.drawPixel(0, tft.height()/2, ST7735_GREEN);
}
void loop() {
}
On the nano, the header is slightly different
#include <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library for ST7735
#include <Adafruit_ST7789.h> // Hardware-specific library for ST7789
#include <SPI.h>
#define TFT_CS 10
#define TFT_RST 12 // Or set to -1 and connect to Arduino RESET pin
#define TFT_DC 8
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);
It works perfectly on the nano, as do a number of other example programs. This uses the Adafruit library, the _RK library fails to compile (I can include errors if useful)
