aselectroworks / arduino-ft6336u Goto Github PK

Hello,
I use your library for a project, but I have a few issues.
I find that the value read_touch1_weight()never gives data.
Also, if the display is at rest, it still shows random touch events with ft6336u.read_touch1_event().
Finally, is it possible to have the display start at x=0 and y = 0 ?
Thanks very much. Attached is a small sketch to demonstrate this on a WT32-SCO1 display. Your library is advised by the manufacturer.

Erik, PA0ESH
WT32-SCO1-ReadTouchParam.ino.ino.zip

I use ESP32S3 and the code configuration is as follows.

#define I2C_SDA 2
#define I2C_SCL 1
#define RST_N_PIN -1
#define INT_N_PIN -1
FT6336U ft6336u(I2C_SDA, I2C_SCL, RST_N_PIN, INT_N_PIN);

When I looked at the serial port, after each reset, the serial port printed the following, of course, ft6336 is working normally.
E (16) gpio: gpio_set_level(226): GPIO output gpio_num error
E (26) gpio: gpio_set_level(226): GPIO output gpio_num error

I checked the FT6336U.cpp file. The problem is with the function digitalWrite(rst n, X).
It is located on lines 44 and 46.
I printed the values for rst_n and int_n and found that they were both 255, not -1.
So. I submit feedback to you.

When compiling it mainly complains about the order of the variable declarations
Swapping line 192 and 193 in the header file fixes the issue.

Compile log:

In file included from lib\Arduino-FT6336U\src\FT6336U.cpp:9:0:
lib\Arduino-FT6336U\src\FT6336U.h:127:14: warning: extra tokens at end of #ifdef directive
#ifdef ESP32 || ESP8266
^
lib\Arduino-FT6336U\src\FT6336U.cpp:16:14: warning: extra tokens at end of #ifdef directive
#ifdef ESP32 || ESP8266
^
In file included from lib\Arduino-FT6336U\src\FT6336U.cpp:9:0:
lib\Arduino-FT6336U\src\FT6336U.h: In constructor 'FT6336U::FT6336U(uint8_t, uint8_t)':
lib\Arduino-FT6336U\src\FT6336U.h:193:22: error: 'FT6336U::rst_n' will be initialized after [-Werror=reorder]
uint8_t rst_n = -1;
^
lib\Arduino-FT6336U\src\FT6336U.h:192:22: error: 'uint8_t FT6336U::int_n' [-Werror=reorder]
uint8_t int_n = -1;
^
lib\Arduino-FT6336U\src\FT6336U.cpp:13:1: error: when initialized here [-Werror=reorder]
FT6336U::FT6336U(uint8_t rst_n, uint8_t int_n)
^
In file included from lib\Arduino-FT6336U\src\FT6336U.cpp:9:0:
lib\Arduino-FT6336U\src\FT6336U.h: In constructor 'FT6336U::FT6336U(uint8_t, uint8_t, uint8_t, uint8_t)':
lib\Arduino-FT6336U\src\FT6336U.h:193:22: error: 'FT6336U::rst_n' will be initialized after [-Werror=reorder]
uint8_t rst_n = -1;
^
lib\Arduino-FT6336U\src\FT6336U.h:192:22: error: 'uint8_t FT6336U::int_n' [-Werror=reorder]
uint8_t int_n = -1;
^
lib\Arduino-FT6336U\src\FT6336U.cpp:17:1: error: when initialized here [-Werror=reorder]
FT6336U::FT6336U(uint8_t sda, uint8_t scl, uint8_t rst_n, uint8_t int_n)
^
lib\Arduino-FT6336U\src\FT6336U.cpp: In member function 'uint8_t FT6336U::readByte(uint8_t)':
lib\Arduino-FT6336U\src\FT6336U.cpp:254:12: warning: 'rdData' may be used uninitialized in this function [-Wmaybe-uninitialized]
return rdData;
^
cc1plus.exe: some warnings being treated as errors
In file included from src\main.cpp:15:0:
lib/Arduino-FT6336U/src/FT6336U.h:127:14: warning: extra tokens at end of #ifdef directive
#ifdef ESP32 || ESP8266
^

I am using a WT32-SC01 board. I have this working with TFT_eSPI library for display and your library for touch. I need to rotate the touch input to match the screen rotation. How may I do that? Still seems to be some minor issues but none that affect me at the moment. I just need X and Y of the touch. The current rotation is where the power connector is on the left of the WT32. I don't see any routine for rotation.

Thanks for the library!!

Mike

Resistive touch screen XPT2026 has a function touch.setRotation(1);
How can we do the same with capacitive FT6336U ?