Add ST7789 support about esp-idf-parallel-tft

[modi12jin]

If someone wants to use this screen, they need to pay attention to the screen interface and backlight voltage

[nopnop2002]

I found this on AliExpress.

Can I buy this converted PCB on AliExpress?

[modi12jin]

I drew the screen adapter board by myself, but it did not solve the backlight problem. I used a boost module, and it is better to use a backlight chip because of the constant current.

DD1718PA with pins 3-18V turn to positive and negative 5V 6V 9V 12V 15V 24V DC Step Up Boost Converter Power Supply Module

Screen interface adapter board

lceda screen interface adapter board project

Project_AXT524124转接板_2021-09-23_11-13-02.zip

Touch adapter board can be bought ready-made

[nopnop2002]

Thank you for information.

[modi12jin]

1_Screen ST7789V (8080 parallel port 8-bit) pin connection relationship with ESP32-S2 pin

ST7789V pin number	LCD function	ESP32-S2 pin
1	BL_K	GND
2	BL_A	15V
3	GND	GND
4	IOVCC(1.8V/2.8V)	3.3V
5	VDD(2.8V)	3.3V
6	GND	GND
7	/CS	GND
8	/RSTB	3.3V
9	RS	GPIO41
10	WRB	GPIO40
11	RDB	3.3V
12	DB7	GPIO7
13	DB6	GPIO6
14	DB5	GPIO5
15	DB4	GPIO4
16	DB3	GPIO3
17	DB2	GPIO2
18	DB1	GPIO1
19	DB0	GPIO0
20	TE	Hang in the air
21	NC	Hang in the air
22	NC	Hang in the air
23	NC	Hang in the air
24	NC	Hang in the air

2_Touch FT5336 pin and ESP32-S2 pin connection relationship

FT5336 pin number	touch function	ESP32-S2 pin
1	GND	GND
2	INT(1.8V)	Hang in the air
3	GND	GND
4	SDA(1.8V)	GPIO8
5	SCL(1.8V)	GPIO9
6	RESET(1.8V)	3.3V
7	VDD(2.8V)	3.3V
8	GND	GND

[nopnop2002]

Perhaps ST7789 and ILI9341 have the same control code.

Try with ILI9341.