Wrong LED_BUILTIN definition for m5stack_atoms3 variant #11688
Description
Board
M5AtomS3
Device Description
M5Stack AtomS3-Lite with built-in button and RGB Led on GPIO #35
See M5 Stack wiki
Hardware Configuration
No external device connected
Version
v3.3.0
Type
Bug
IDE Name
Arduino IDE 1.8.19
Operating System
Windows 11
Flash frequency
80 Mhz
PSRAM enabled
no
Upload speed
921600
Description
When compiling and flashing Blink.ino or BlinkRGB.ino nothing happens on the board and the led does not change state.
Sketch
/*
Blink
Turns an LED on for one second, then off for one second, repeatedly.
Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
the correct LED pin independent of which board is used.
If you want to know what pin the on-board LED is connected to on your Arduino
model, check the Technical Specs of your board at:
https://www.arduino.cc/en/Main/Products
modified 8 May 2014
by Scott Fitzgerald
modified 2 Sep 2016
by Arturo Guadalupi
modified 8 Sep 2016
by Colby Newman
This example code is in the public domain.
https://www.arduino.cc/en/Tutorial/BuiltInExamples/Blink
*/
// the setup function runs once when you press reset or power the board
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}Debug Message
22:13:09.161 -> ESP-ROM:esp32s3-20210327
22:13:09.161 -> =========== Before Setup Start ===========
22:13:09.161 -> Chip Info:
22:13:09.161 -> ------------------------------------------
22:13:09.161 -> Model : ESP32-S3
22:13:09.161 -> Package : 0
22:13:09.161 -> Revision : 0.01
22:13:09.161 -> Cores : 2
22:13:09.161 -> CPU Frequency : 240 MHz
22:13:09.161 -> XTAL Frequency : 40 MHz
22:13:09.161 -> Features Bitfield : 0x00000012
22:13:09.161 -> Embedded Flash : No
22:13:09.161 -> Embedded PSRAM : No
22:13:09.161 -> 2.4GHz WiFi : Yes
22:13:09.161 -> Classic BT : No
22:13:09.161 -> BT Low Energy : Yes
22:13:09.161 -> IEEE 802.15.4 : No
22:13:09.161 -> ------------------------------------------
22:13:09.161 -> INTERNAL Memory Info:
22:13:09.161 -> ------------------------------------------
22:13:09.161 -> Total Size : 389396 B ( 380.3 KB)
22:13:09.161 -> Free Bytes : 351888 B ( 343.6 KB)
22:13:09.161 -> Allocated Bytes : 32508 B ( 31.7 KB)
22:13:09.161 -> Minimum Free Bytes: 346740 B ( 338.6 KB)
22:13:09.161 -> Largest Free Block: 294900 B ( 288.0 KB)
22:13:09.161 -> ------------------------------------------
22:13:09.161 -> Flash Info:
22:13:09.161 -> ------------------------------------------
22:13:09.161 -> Chip Size : 8388608 B (8 MB)
22:13:09.161 -> Block Size : 65536 B ( 64.0 KB)
22:13:09.161 -> Sector Size : 4096 B ( 4.0 KB)
22:13:09.161 -> Page Size : 256 B ( 0.2 KB)
22:13:09.161 -> Bus Speed : 80 MHz
22:13:09.161 -> Bus Mode : QIO
22:13:09.161 -> ------------------------------------------
22:13:09.161 -> Partitions Info:
22:13:09.161 -> ------------------------------------------
22:13:09.161 -> nvs : addr: 0x00009000, size: 20.0 KB, type: DATA, subtype: NVS
22:13:09.161 -> otadata : addr: 0x0000E000, size: 8.0 KB, type: DATA, subtype: OTA
22:13:09.161 -> app0 : addr: 0x00010000, size: 1280.0 KB, type: APP, subtype: OTA_0
22:13:09.161 -> app1 : addr: 0x00150000, size: 1280.0 KB, type: APP, subtype: OTA_1
22:13:09.161 -> spiffs : addr: 0x00290000, size: 1408.0 KB, type: DATA, subtype: SPIFFS
22:13:09.161 -> coredump : addr: 0x003F0000, size: 64.0 KB, type: DATA, subtype: COREDUMP
22:13:09.161 -> ------------------------------------------
22:13:09.161 -> Software Info:
22:13:09.161 -> ------------------------------------------
22:13:09.161 -> Compile Date/Time : Aug 2 2025 22:08:14
22:13:09.161 -> Compile Host OS : windows
22:13:09.161 -> ESP-IDF Version : v5.5-1-gb66b5448e0
22:13:09.161 -> Arduino Version : 3.3.0
22:13:09.161 -> ------------------------------------------
22:13:09.161 -> Board Info:
22:13:09.161 -> ------------------------------------------
22:13:09.161 -> Arduino Board : M5STACK_ATOMS3
22:13:09.161 -> Arduino Variant : m5stack_atoms3
22:13:09.161 -> Arduino FQBN : esp32:esp32:m5stack_atoms3:JTAGAdapter=default,PSRAM=disabled,FlashMode=qio,FlashSize=8M,LoopCore=1,EventsCore=1,USBMode=hwcdc,CDCOnBoot=cdc,MSCOnBoot=default,DFUOnBoot=default,UploadMode=default,PartitionScheme=default,CPUFreq=240,UploadSpeed=921600,DebugLevel=debug,EraseFlash=none
22:13:09.161 -> ============ Before Setup End ============
22:13:09.267 -> =========== After Setup Start ============
22:13:09.267 -> INTERNAL Memory Info:
22:13:09.267 -> ------------------------------------------
22:13:09.267 -> Total Size : 389396 B ( 380.3 KB)
22:13:09.267 -> Free Bytes : 351800 B ( 343.6 KB)
22:13:09.267 -> Allocated Bytes : 32564 B ( 31.8 KB)
22:13:09.267 -> Minimum Free Bytes: 346328 B ( 338.2 KB)
22:13:09.267 -> Largest Free Block: 294900 B ( 288.0 KB)
22:13:09.267 -> ------------------------------------------
22:13:09.267 -> GPIO Info:
22:13:09.267 -> ------------------------------------------
22:13:09.267 -> GPIO : BUS_TYPE[bus/unit][chan]
22:13:09.267 -> --------------------------------------
22:13:09.267 -> 19 : USB_DM
22:13:09.267 -> 20 : USB_DP
22:13:09.267 -> 35 : GPIO
22:13:09.267 -> 43 : UART_TX[0]
22:13:09.267 -> 44 : UART_RX[0]
22:13:09.267 -> ============ After Setup End =============
Other Steps to Reproduce
By manually changing locally the pins_arduino.h of the variant with this code instead of what seems a copy-paste of the generic ESP32S3 code mentioning pin 48:
#define PIN_RGB_LED 35
// BUILTIN_LED can be used in new Arduino API digitalWrite() like in Blink.ino
static const uint8_t LED_BUILTIN = SOC_GPIO_PIN_COUNT + PIN_RGB_LED;
the proper blicking behaviour is observed
I have checked existing issues, online documentation and the Troubleshooting Guide
- I confirm I have checked existing issues, online documentation and Troubleshooting guide.