Using WiFi on Tab5 with the Arduino IDE

[smily77]

@teastain thanks but unfortunatly doesn't the Tab5 exist in 2.1.4 an simpler than the below can't the sketch be made:

#include <M5Unified.h>
#include <WiFi.h>
void setup() {
auto cfg = M5.config();
M5.begin(cfg); // ← hier wird intern der C6 hochgefahren
WiFi.begin(ssid, password);
}

[teastain]

@smily77 a-HA!
Thank you.

[felmue]

Hi guys

the ESP32C6 is connected via SDIO bus to the ESP32P4 but unfortunately the GPIOs used in Tab5 differ from the GPIOs used by the ESP32P4 eval board.

In other words the pre-compiled Arduino library is setup to use SDIO GPIOs which do not match the Tab5 hardware.

So in order to use Arduino you'll need to pre-compile the Arduino library yourself using the Arduino library builder or setup the build system to use Arduino as ESP-IDF component. Both ways should allow to modify the SDIO GPIOs accordingly.

Note: the SDIO GPIOs used in Tab5 can be found here.

Thanks
Felix

[smily77]

@felmue

This applies as well if you use the M5Stack pkg? - is there a "how to" somewere for this?

[felmue]

Hello @smily77

no, AFAIK there is no specific 'how to' for M5Tab5 - only the generic about how to build your own Arduino library using Arduino library builder or how to use Arduino as ESP-IDF component. See links above.

Thanks
Felix

[smily77]

There seams to be an additional Issue the Tab5 uses SDIO2 - The correct GPIO's only don't work

[felmue]

Hello @smily77

I believe SDIO2 is used so the communication between ESP32P4 (master) and ESP32C6 (slave) can be exclusive, e.g. not shared with other slaves.

Thanks
Felix

[New_Comix]

Hi there,

are there any (better) news about using Wifi within the Arduino environment?

kind regards
Jörg

[felmue]

Hi guys

corresponding github issue for reference.

It seems there isn't an easier way just (yet) than using Espressif Library Builder.

Thanks
Felix

[smily77]

It was mentioned that in the next ESP-Arduino package 3.3.0 the issue with the connection will be solved by this possibility:

WiFi.setPins(clk, cmd, d0, d1, d2, d3, rst);
WiFi.begin(ssid, pass);

This sounds promising. However the Tab 5 doc's lists the Pins for clk, cmd, d0, d1, d2, d3 but not for the reset pin (rst). Does somebody know how the reset of the C6 is wired to the P4 in the Tab 5?

[felmue]

Hello @smily77

according to the schematic GPIO15 is used as reset pin (SOC_EXTRF_RST).

Thanks
Felix

[sapphire]

@smily77 Did you manage to get the SD card reader to work?

[Krmiller]

@sapphire Same, can't get the SD to work. Anyone?

Thanks,
Kris

[sapphire]

I managed to get the SD card reader to work.

H_SDIO_DRV error: sdio card init failed
The WiFi module (ESP32-C6) uses an independent set of dedicated pins (SDIO2_D0 to SDIO2_CK), thus avoiding any physical interface overlap and conflicts.

sd_mmc_card:
id: sd_card
clk_pin: GPIO43
cmd_pin: GPIO44
data0_pin: GPIO39
data1_pin: GPIO40
data2_pin: GPIO41
data3_pin: GPIO42
mode_1bit: false
slot: 0

esp32_hosted:
variant: esp32c6
active_high: true
clk_pin: GPIO12
cmd_pin: GPIO13
d0_pin: GPIO11
d1_pin: GPIO10
d2_pin: GPIO9
d3_pin: GPIO8
reset_pin: GPIO15
slot: 1

[jredrejo]

@sapphire but this topic refers to WiFi. any one could solve this probem? I've tried all the steps I've could without success.
It seems there are more people who are having this same issue, no way to use wifi in our Tab5: https://www.reddit.com/r/M5Stack/comments/1p04d3b/comment/ntozc4p/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button