<![CDATA[Bus Mapping M5Core2 <-> M5Stack]]>Hello,

in past I used some M5Stack modules at M5Stack and now I like to migrate to M5Core2. The challenge ist the different bus system.

Pin	M5Stack	M5Core2
GND	2	1,3,5
SCK	4	11
MISO	6	9
RESET	8	6
nu	10	-
nu	12	-
A0	14	-
A1	16	-
A2	18	-
A3	20	-
A4	22	-
A5	24	-
AREF	26	-
IO12	28	-
IO13	30	-
5V	1	28
MOSI	3	7
SS	5	-
D0/RX	7	13
D1/Tx	9	14
D2/SDA	11	SYS:17, EXT:19
D3/SCI	13	SYS:18, EXT:20
D4	15	-
D5	17	-
D6	19	-
D7	21	-
IO8	23	-
IO9	25	-
IO10	27	-
IO11	29	-
IO35	-	2
IO36	-	4
IO25	-	8
IO26	-	10
3,3V	-	12
Rx2	-	15
Tx2	-	16
IO19	-	22
IO0	-	24
IO34	-	26
BAT	-	30

Who has experience with using an M5Stack module on an M5Core2?

]]>https://community.m5stack.com/topic/2429/bus-mapping-m5core2-m5stackRSS for NodeSat, 14 Mar 2026 09:11:54 GMTSat, 31 Oct 2020 09:57:53 GMT60<![CDATA[Reply to Bus Mapping M5Core2 <-> M5Stack on Thu, 31 Dec 2020 15:11:29 GMT]]>@nlindin This one works!

#include <M5Core2.h>
#include <IRremote.h>

IRrecv irrecv(35);
decode_results ircode;

void setup() {
M5.begin();
irrecv.enableIRIn();
}

void loop()
{
if (irrecv.decode(&ircode))
{
Serial.println(ircode.value, HEX);
delay(100);
irrecv.resume();
}
m5.update();
}

]]>https://community.m5stack.com/post/11474https://community.m5stack.com/post/11474Thu, 31 Dec 2020 15:11:29 GMT<![CDATA[Reply to Bus Mapping M5Core2 <-> M5Stack on Tue, 29 Dec 2020 11:14:10 GMT]]>@ajb2k3 The IR in the GoPlus2 gives this by the serial monitor. Any updates?
Thank you and happy 2021.
E (42353) rmt: rmt_write_items(797): RMT PARAM LEN ERROR
send done
76
recv done
76
.
.
.

]]>https://community.m5stack.com/post/11412https://community.m5stack.com/post/11412Tue, 29 Dec 2020 11:14:10 GMT<![CDATA[Reply to Bus Mapping M5Core2 <-> M5Stack on Fri, 11 Dec 2020 20:52:20 GMT]]>Hi again!
For now I have changed the .ino from GPIO 5 to GPIO 33, (35 is the same for both, Stack and Core2) but the ir receiver gives only "PARAM LEN ERROR" from all my remotes and buttons. I continue doing something wrong with the Core2+Goplus 2.
Any help, please?
Thank you!

]]>https://community.m5stack.com/post/11164https://community.m5stack.com/post/11164Fri, 11 Dec 2020 20:52:20 GMT<![CDATA[Reply to Bus Mapping M5Core2 <-> M5Stack on Wed, 02 Dec 2020 11:34:44 GMT]]>@ajb2k3 Thank you for your answer. I want to say an example in arduino for Core2+Goplus2. With Uiflow it seems to work fine. With Arduino I am totally stuck in this scenario.

]]>https://community.m5stack.com/post/10989https://community.m5stack.com/post/10989Wed, 02 Dec 2020 11:34:44 GMT<![CDATA[Reply to Bus Mapping M5Core2 <-> M5Stack on Wed, 02 Dec 2020 10:21:32 GMT]]>@nlindin what is arduino- mix Core2 ?
Go plus2 is sat on my bench waiting to be documented when i finish the coreink but had some issue with the coreink delaying documentation.

]]>https://community.m5stack.com/post/10986https://community.m5stack.com/post/10986Wed, 02 Dec 2020 10:21:32 GMT<![CDATA[Reply to Bus Mapping M5Core2 <-> M5Stack on Tue, 01 Dec 2020 23:36:23 GMT]]>@m5stack Hi! Could you please put an example? I can not find a valid one. For example, how can we -using arduino- mix Core2 and GoPlus2 module? The example does not work. Thank you very much!

]]>https://community.m5stack.com/post/10985https://community.m5stack.com/post/10985Tue, 01 Dec 2020 23:36:23 GMT<![CDATA[Reply to Bus Mapping M5Core2 <-> M5Stack on Thu, 05 Nov 2020 11:14:44 GMT]]>@felmue Thank you for your help.

]]>https://community.m5stack.com/post/10624https://community.m5stack.com/post/10624Thu, 05 Nov 2020 11:14:44 GMT<![CDATA[Reply to Bus Mapping M5Core2 <-> M5Stack on Thu, 05 Nov 2020 11:13:26 GMT]]>Hi guys

I've put together a comparison sheet showing the similarities and differences between M5Stack / M5Core2 bus and GPIO usage. You can find it here:

https://www.gwendesign.ch/kb/m5stack/m5core2/#m5core2-bus-and-gpios-compared-to-m5stack

Cheers
Felix

]]>https://community.m5stack.com/post/10623https://community.m5stack.com/post/10623Thu, 05 Nov 2020 11:13:26 GMT<![CDATA[Reply to Bus Mapping M5Core2 <-> M5Stack on Mon, 02 Nov 2020 10:44:43 GMT]]>Core2-bus has some differences with M5-bus. so when you stack the module to the core2. you need to make some pin num change in your code.

]]>https://community.m5stack.com/post/10568https://community.m5stack.com/post/10568Mon, 02 Nov 2020 10:44:43 GMT