Esp32_pins

Table over GPIO pins on different boards used in the project, Note: some pins are both routed out and used on the boards.

Symbol	Explanation
*	Main (bottom) connector of board
**	Secondary connector, like the I2C on T4
(TEXT)	TEXT is on the dev board itself, like screen, some buttons, touch
TEXT	TEXT is something we connected in the project

GPIO	Input	Output	T4	T-Display	Wt32-SC01	Notes
0	pulled up	OK	*	(Button)	*	outputs PWM signal at boot
1	TX	OK	*		*	TX pin debug output at boot
2	OK	OK	(SD)	* INC-	* INC-	connected to on-board LED
3	OK	RX	*			RX pin HIGH at boot
4	OK	OK	* (ILI9341)	(ST7789V)	* SPEED+
5	OK	OK	(ILI9341)	(ST7789V)	*	outputs PWM signal at boot
6	x	x				integrated SPI flash
7	x	x				integrated SPI flash
8	x	x				integrated SPI flash
9	x	x				integrated SPI flash
10	x	x				SPI flash
11	x	x				SPI flash
12	OK	OK	(ILI9341)	*	*	boot fail if pulled high
13	OK	OK	(SD)	* KEY_OK	* (WT-352215-A2)
14	OK	OK	(SD)		* (WT-352215-A2)	outputs PWM signal at boot
15	OK	OK	(SD)	* KEY_BACK	* (WT-352215-A2)	outputs PWM signal at boot
16	OK	OK		(ST7789V)
17	OK	OK		* SPEED+
18	OK	OK	(ILI9341)	(ST7789V)	* SDA
19	OK	OK	*	(ST7789V)	* SCL
21	OK	OK	** SDA	* SDA	* (WT-352215-A2)
22	OK	OK	** SCL	* SCL	* (WT-352215-A2)
23	OK	OK	(ILI9341)	(ST7789V)	* (WT-352215-A2)
25	OK	OK	* AW9523_INTN	* AW9523_INTN	* AW9523_INTN	is still INC- in the code as HW is not ready yet
26	OK	OK		* REED	* REED
27	OK	OK	(ILI9341)	* INC+	* INC+
32	OK	OK	* (ILI9341)	* SPEED-	* SPEED-
33	OK	OK	* AW9523_RSTN	* AW9523_RSTN	* AW9523_RSTN	is still SPEED+ in the code as HW is not ready yet
34	OK	x	*		*	input only
35	OK	x	*	(Button)	*	input only
36	OK	x	*	* KEY_DOWN	* (EM_INT)	input only SVP
37	OK	x	(Button2)	* KEY_UP		input only
38	OK	x	(Button1)	* KEY_LEFT		input only
39	OK	x	* (Button3)	* KEY_RIGHT	* (TP_INT)	input only SVN