<![CDATA[Using WiFi on Tab5 with the Arduino IDE]]>I got my Tab5 - cool thing :-) but I I have an issue with WiFi.

Basically the C6 should work as a coprocessor connected with SIDO. This should allow using Wifi as normal with:

#include <WiFi.h>
WiFi.begin(ssid, password);

in the Arduino IDE. But instead a runtime error appears, and it restarts amd so on

         sdio_mempool_create free:34078468 min-free:34077500 lfb-def:33030132 lfb-8bit:33030132

        E (1734) sdmmc_common: sdmmc_init_ocr: send_op_cond (1) returned 0x107
        E (1734) sdio_wrapper: sdmmc_card_init failed
        E (4372) H_SDIO_DRV: sdio card init failed

       FreeRTOS: FreeRTOS Task "sdio_read" should not return, Aborting now!

Does anyone know how to fix or have just a working example (there isn't any example around and even the P4 example with WiFi in the arduino IDE do not work)

Arduino IDE : 2.3.6; M5Stack Package 3.2.0 (all M5Stack lib on the latest state as well)

]]>https://community.m5stack.com/topic/7576/using-wifi-on-tab5-with-the-arduino-ideRSS for NodeWed, 11 Mar 2026 12:48:20 GMTMon, 26 May 2025 20:06:16 GMT60<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Sat, 13 Dec 2025 10:25:20 GMT]]>@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

]]>https://community.m5stack.com/post/30307https://community.m5stack.com/post/30307Sat, 13 Dec 2025 10:25:20 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Tue, 12 Aug 2025 03:25:29 GMT]]>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

]]>https://community.m5stack.com/post/29727https://community.m5stack.com/post/29727Tue, 12 Aug 2025 03:25:29 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Wed, 06 Aug 2025 17:10:05 GMT]]>@sapphire Same, can't get the SD to work. Anyone?

Thanks,
Kris

]]>https://community.m5stack.com/post/29698https://community.m5stack.com/post/29698Wed, 06 Aug 2025 17:10:05 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Thu, 17 Jul 2025 14:29:11 GMT]]>@smily77 Did you manage to get the SD card reader to work?

]]>https://community.m5stack.com/post/29541https://community.m5stack.com/post/29541Thu, 17 Jul 2025 14:29:11 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Thu, 26 Jun 2025 12:18:09 GMT]]>Hello @smily77

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

Thanks
Felix

]]>https://community.m5stack.com/post/29341https://community.m5stack.com/post/29341Thu, 26 Jun 2025 12:18:09 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Thu, 26 Jun 2025 11:41:06 GMT]]>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?

]]>https://community.m5stack.com/post/29340https://community.m5stack.com/post/29340Thu, 26 Jun 2025 11:41:06 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Sun, 22 Jun 2025 06:28:37 GMT]]>Hi guys

corresponding github issue for reference.

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

Thanks
Felix

]]>https://community.m5stack.com/post/29304https://community.m5stack.com/post/29304Sun, 22 Jun 2025 06:28:37 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Sat, 21 Jun 2025 20:27:59 GMT]]>Hi there,

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

kind regards
Jörg

]]>https://community.m5stack.com/post/29302https://community.m5stack.com/post/29302Sat, 21 Jun 2025 20:27:59 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Sat, 31 May 2025 15:36:11 GMT]]>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

]]>https://community.m5stack.com/post/29139https://community.m5stack.com/post/29139Sat, 31 May 2025 15:36:11 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Sat, 31 May 2025 08:44:35 GMT]]>There seams to be an additional Issue the Tab5 uses SDIO2 - The correct GPIO's only don't work

]]>https://community.m5stack.com/post/29138https://community.m5stack.com/post/29138Sat, 31 May 2025 08:44:35 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Fri, 30 May 2025 09:55:28 GMT]]>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

]]>https://community.m5stack.com/post/29134https://community.m5stack.com/post/29134Fri, 30 May 2025 09:55:28 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Fri, 30 May 2025 08:36:38 GMT]]>@felmue

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

]]>https://community.m5stack.com/post/29133https://community.m5stack.com/post/29133Fri, 30 May 2025 08:36:38 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Wed, 28 May 2025 20:44:55 GMT]]>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

]]>https://community.m5stack.com/post/29117https://community.m5stack.com/post/29117Wed, 28 May 2025 20:44:55 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Tue, 27 May 2025 20:49:27 GMT]]>@smily77 a-HA!
Thank you.

]]>https://community.m5stack.com/post/29113https://community.m5stack.com/post/29113Tue, 27 May 2025 20:49:27 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Tue, 27 May 2025 19:15:12 GMT]]>@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);
}

]]>https://community.m5stack.com/post/29112https://community.m5stack.com/post/29112Tue, 27 May 2025 19:15:12 GMT<![CDATA[Reply to Using WiFi on Tab5 with the Arduino IDE on Mon, 26 May 2025 23:57:56 GMT]]>@smily77 said in Using WiFi on Tab5 with the Arduino IDE:

M5Stack Package 3.2.0

This board pkg (3.20) seems to be broken for many of us.
We have had to revert to ver2.14 and I have notified M5Stack support.

Try reverting and see.
If still a problem make a simpler de-bug version of your sketch and add complications.

]]>https://community.m5stack.com/post/29111https://community.m5stack.com/post/29111Mon, 26 May 2025 23:57:56 GMT