Arduino Wire(i2c) library cannot be used together with this library

[cheops]

I am using pioarduino release 3.2.0 (#147)
when using Wire from arduino together with this dirver I get an error

E (972) i2c: CONFLICT! driver_ng is not allowed to be used with this old driver

Wire I2C bus configuration

#include <Wire.h>
Wire.begin(SDA_PIN, SCL_PIN);

disabling the touch and portexpander is not enough to use this library (only for display) and also use Wire library

#define ESP_PANEL_DRIVERS_BUS_USE_ALL                   (0)
    #define ESP_PANEL_DRIVERS_BUS_USE_I2C               (0)
#define ESP_PANEL_DRIVERS_BUS_COMPILE_UNUSED_DRIVERS    (0)

#define ESP_PANEL_DRIVERS_TOUCH_USE_ALL                 (0)
    #define ESP_PANEL_DRIVERS_TOUCH_USE_AXS15231B       (0)
    #define ESP_PANEL_DRIVERS_TOUCH_USE_CHSC6540        (0)
    #define ESP_PANEL_DRIVERS_TOUCH_USE_CST816S         (0)
    #define ESP_PANEL_DRIVERS_TOUCH_USE_FT5x06          (0)
    #define ESP_PANEL_DRIVERS_TOUCH_USE_GT911           (0)
    #define ESP_PANEL_DRIVERS_TOUCH_USE_GT1151          (0)
    #define ESP_PANEL_DRIVERS_TOUCH_USE_SPD2010         (0)
    #define ESP_PANEL_DRIVERS_TOUCH_USE_ST1633          (0)
    #define ESP_PANEL_DRIVERS_TOUCH_USE_ST7123          (0)
    #define ESP_PANEL_DRIVERS_TOUCH_USE_STMPE610        (0)
    #define ESP_PANEL_DRIVERS_TOUCH_USE_TT21100         (0)
    #define ESP_PANEL_DRIVERS_TOUCH_USE_XPT2046         (0)
#define ESP_PANEL_DRIVERS_TOUCH_COMPILE_UNUSED_DRIVERS          (0)

#define ESP_PANEL_DRIVERS_EXPANDER_USE_ALL                      (0)
    #define ESP_PANEL_DRIVERS_EXPANDER_USE_CH422G               (0)
    #define ESP_PANEL_DRIVERS_EXPANDER_USE_HT8574               (0)
    #define ESP_PANEL_DRIVERS_EXPANDER_USE_TCA95XX_8BIT         (0)
    #define ESP_PANEL_DRIVERS_EXPANDER_USE_TCA95XX_16BIT        (0)

#define ESP_PANEL_BOARD_LCD_BUS_TYPE        (ESP_PANEL_BUS_TYPE_MIPI_DSI)
#define ESP_PANEL_BOARD_LCD_BUS_SKIP_INIT_HOST      (0)     // 0/1. Typically set to 0

#define ESP_PANEL_BOARD_USE_TOUCH               (0)
#define ESP_PANEL_BOARD_TOUCH_BUS_SKIP_INIT_HOST        (1)     // 0/1. Typically set to 0

#define ESP_PANEL_BOARD_USE_EXPANDER            (0)
#define ESP_PANEL_BOARD_EXPANDER_SKIP_INIT_HOST     (1)     // 0/1

wire.cpp https://github.com/espressif/arduino-esp32/blob/master/libraries/Wire/src/Wire.cpp#L36
now uses the driver_ng

[cheops]

related to #147

[christophe195]

Can this help? https://github.com/esp-arduino-libs/ESP32_Display_Panel/blob/master/docs/envs/use_with_arduino.md#how-to-avoid-i2c-re-initialization-when-using-esp32_display_panel-in-arduino-ide-eg-when-using-wire-library

[cheops]

Rereading my issue, I see my explanation is not clear enough.

case one

void setup()
{
    #include <Wire.h>
    Wire.begin(SDA_PIN, SCL_PIN);

    esp_panel::board::Board *board = new esp_panel::board::Board();
    board->init();
    assert(board->begin());
}

results in runtime error:

E (972) i2c: CONFLICT! driver_ng is not allowed to be used with this old driver

case two

For this part I had enabled the I2C Driver
#define ESP_PANEL_DRIVERS_BUS_USE_I2C (1)
#define ESP_PANEL_DRIVERS_TOUCH_USE_GT911 (1)

void setup()
{
    #include <Wire.h>
    Wire.begin(SDA_PIN, SCL_PIN);

    esp_panel::board::Board *board = new esp_panel::board::Board();
    board->init();

    /**
     * Should be called after `board->init()` and before `board->begin()`
     */
    // For I2C Touch
    static_cast<esp_panel::drivers::BusI2C *>(board->getTouch()->getBus())->configI2C_HostSkipInit();

    assert(board->begin());
}

results in runtime error:

E (972) i2c: CONFLICT! driver_ng is not allowed to be used with this old driver

case three

This however runs fine (omitting the Wire.begin():

void setup()
{
    #include <Wire.h>

    esp_panel::board::Board *board = new esp_panel::board::Board();
    board->init();
    assert(board->begin());
}

[Y1hsiaochunnn]

esp-idf updated the i2c driver from the old version of i2c.h to i2c_master.h. The library is not yet fully adapted to the new driver, so it will give an error.

Developers are already adapting.

[Lzw655]

Hi @cheops,

@Y1hsiaochunnn is right. The library needs to support the i2c_ng driver to resolve this issue.

[cheops]

ok, from what I can see these parts need updating to i2c_ng driver
https://github.com/search?q=repo%3Aesp-arduino-libs%2FESP32_Display_Panel%20%23include%20%22driver%2Fi2c.h%22&type=code
also the ESP32_IO_Expander uses the i2c_legacy driver and needs updating
https://github.com/search?q=repo%3Aesp-arduino-libs%2FESP32_IO_Expander%20%23include%20%22driver%2Fi2c.h%22&type=code

For my project main board I do not necessary need i2c touch nor io-expander (although some of the project dev boards have i2c touch)
So I will temporarily remove those blocks from the code in my project to get the project main board up and running (and the dev boards without touch).
Let's see how that works out.

[cheops]

For my project main board I do not necessary need i2c touch nor io-expander (although some of the project dev boards have i2c touch) So I will temporarily remove those blocks from the code in my project to get the project main board up and running (and the dev boards without touch). Let's see how that works out.

That works, I have the display working and Arduino Wire(i2c-ng) is also working!

[Lzw655]

For my project main board I do not necessary need i2c touch nor io-expander (although some of the project dev boards have i2c touch) So I will temporarily remove those blocks from the code in my project to get the project main board up and running (and the dev boards without touch). Let's see how that works out.

That works, I have the display working and Arduino Wire(i2c-ng) is also working!

Nice!

[RobCrown82]

I'm also facing the same issue. I can't include any arduino libraries using Wire.h because the ESP32-P4 immediately throws the i2c conflict runtime error. For my project I need to use the i2c touchscreen on my display. Is this display library going to be updated in the next release to use the new i2c_ng driver as opposed to the legacy i2c driver?

[Lzw655]

I'm also facing the same issue. I can't include any arduino libraries using Wire.h because the ESP32-P4 immediately throws the i2c conflict runtime error. For my project I need to use the i2c touchscreen on my display. Is this display library going to be updated in the next release to use the new i2c_ng driver as opposed to the legacy i2c driver?

Yes, I am working on it. Since this library depends on ESP32_IO_Expander, it also requires an update to the i2c_ng driver. This has just been completed, and I'm also in the process of updating this library.