Description
Describe the bug
Tried probing the I2C bus by connecting a BME280 sensor to the ESP32_DevKitC_WROOM board using the I2C0 bus in the "minimal" sample application. I2C and shell-related configurations were enabled. While scanning the I2C bus using the i2c scan i2c@3ff53000 command in the shell, a transfer error with code -14 was reported.
Pin configurations of I2C0 :
&i2c0 {
status = "okay";
clock-frequency = <I2C_BITRATE_STANDARD>;
sda-gpios = <&gpio0 21 GPIO_OPEN_DRAIN>;
scl-gpios = <&gpio0 22 GPIO_OPEN_DRAIN>;
pinctrl-0 = <&i2c0_default>;
pinctrl-names = "default";
};
Regression
- This is a regression.
Steps to reproduce
Enable the configs below in zephyr/samples/basic/minimal/prj.conf
CONFIG_LOG=y
CONFIG_SHELL=y
CONFIG_I2C=y
CONFIG_I2C_SHELL=y
Connect an i2c device to the esp32 (Used BME280)
Use the following build and flash commands
west build -b esp32_devkitc_wroom/esp32/procpu samples/basic/minimal/
west flash
After flashing, open the serial console and run the following command to scan for I2C devices:
i2c scan i2c@3ff53000
Relevant log output
uart:~$ i2c scan i2c@3ff53000
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- 76 --
1 devices found on i2c@3ff53000
[00:04:21.545,000] <err> i2c_esp32: I2C transfer error: -14
--- 67 messages dropped ---
[00:04:21.545,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.546,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.546,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.546,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.546,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.547,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.547,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.547,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.547,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.548,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.548,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.548,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.549,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.549,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.549,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.550,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.569,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.569,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.570,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.570,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.570,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.571,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.571,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.571,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.571,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.572,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.572,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.573,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.573,000] <err> i2c_esp32: I2C transfer error: -14
[00:04:21.573,000] <err> i2c_esp32: I2C transfer error: -14Impact
Annoyance – Minor irritation; no significant impact on usability or functionality.
Environment
No response
Additional Context
No response