Debugging is much better than littering your code with print statements for lots of reasons - which I’m not going to go into here. But setting debugging up is not always straightforward.
To make things easier, I use an esp32 s3 board that had JTAG built into it. I found this article on the internet and loosely followed the instructions: How to use JTAG built-in debugger of the ESP32-S3 in PLATFORMIO.
I’m not sure whether using Zadig is required, but I did do that bit.
Also, I did the ERASE FLASH step using the following command:
The platformio.ini file looked like this:
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| [env:esp32-s3-devkitc-1]
platform = espressif32
board = esp32-s3-devkitc-1
framework = arduino
lib_deps = adafruit/Adafruit NeoPixel@^1.15.5
build_type = debug
; Ensure the USB CDC (serial) remains active on boot
;build_flags =
; -D ARDUINO_USB_MODE=1
; -D ARDUINO_USB_CDC_ON_BOOT=1
;upload_speed = 2000000 ;ESP32S3 USB-Serial Converter maximum 2000000bps
;upload_port = COM5
;upload_flags = --erase-all
monitor_speed = 115200
monitor_port = COM4
;debug_tool = esp-builtin
;debug_init_break = break setup
|
I used the Adafruit NeoPixel library to control the S3 multi-colour pixel. The whole main.cpp file looked like this:
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| #include <Arduino.h>
#include <Adafruit_NeoPixel.h>
#define PIN_NEO_LED 48
#define NUM_NEO_PIXELS 1
Adafruit_NeoPixel strip(NUM_NEO_PIXELS, PIN_NEO_LED, NEO_GRB + NEO_KHZ800);
struct Colour {
int red; int green; int blue;
};
Colour ColourMap[] =
{
{6,0,0}, {0,6,0}, {0,0,6}, {3,3,0},
{3,0,3}, {0,3,3}, {2,2,2}
};
int ColourMap_NumElements = sizeof(ColourMap)/sizeof(ColourMap[0]);
int loopCounter=0;
void setup() {
// put your setup code here, to run once:
strip.begin();
strip.show();
Serial.begin(115200);
}
void loop() {
// put your main code here, to run repeatedly:
for (int j=0; j<ColourMap_NumElements; j++)
{
Colour c = ColourMap[j];
strip.setPixelColor(0, strip.Color(c.red, c.green, c.blue));
strip.show();
Serial.print(loopCounter);
Serial.print(" ");
loopCounter++;
delay(1000);
}
}
|
This was all I needed - I could then set breakpoints, step through the code and inspect variables.
