Closed
Description
Board
ESP32
Device Description
38 pin narrow ESP32-WROOM-32 KEEYEE board
Hardware Configuration
this is a compiler problem haven't gotten to the board yet.
Version
v2.0.4
IDE Name
Arduino
Operating System
MacOS 11.6.8
Flash frequency
40mhz
PSRAM enabled
yes
Upload speed
115200
Description
While compiling a test sketch in Arduino IDE for ESP32 I received an error "The "python3" command requires the command line developer tools." This is a part of Apple's Xcode which is a development environment that I do not have and which takes a significant amount of space on a computer. Is there a way around this or do I absolutely have to install this thing?
My computer is a 2013 MacBook Air and the current versions of Xcode available on the App Store and Apples Developer site will not run on it and I can't seem to find older versions on the Apple developer site. I just want to work with the esp32 not the entire MACOS.
Thank you for any help you can provide.
Sketch
/*
ledcWrite_RGB.ino
Runs through the full 255 color spectrum for an rgb led
Demonstrate ledcWrite functionality for driving leds with PWM on ESP32
This example code is in the public domain.
Some basic modifications were made by vseven, mostly commenting.
*/
// Set up the rgb led names
uint8_t ledR = 2;
uint8_t ledG = 4;
uint8_t ledB = 5;
uint8_t ledArray[3] = {1, 2, 3}; // three led channels
const boolean invert = true; // set true if common anode, false if common cathode
uint8_t color = 0; // a value from 0 to 255 representing the hue
uint32_t R, G, B; // the Red Green and Blue color components
uint8_t brightness = 255; // 255 is maximum brightness, but can be changed. Might need 256 for common anode to fully turn off.
// the setup routine runs once when you press reset:
void setup()
{
Serial.begin(115200);
delay(10);
ledcAttachPin(ledR, 1); // assign RGB led pins to channels
ledcAttachPin(ledG, 2);
ledcAttachPin(ledB, 3);
// Initialize channels
// channels 0-15, resolution 1-16 bits, freq limits depend on resolution
// ledcSetup(uint8_t channel, uint32_t freq, uint8_t resolution_bits);
ledcSetup(1, 12000, 8); // 12 kHz PWM, 8-bit resolution
ledcSetup(2, 12000, 8);
ledcSetup(3, 12000, 8);
}
// void loop runs over and over again
void loop()
{
Serial.println("Send all LEDs a 255 and wait 2 seconds.");
// If your RGB LED turns off instead of on here you should check if the LED is common anode or cathode.
// If it doesn't fully turn off and is common anode try using 256.
ledcWrite(1, 255);
ledcWrite(2, 255);
ledcWrite(3, 255);
delay(2000);
Serial.println("Send all LEDs a 0 and wait 2 seconds.");
ledcWrite(1, 0);
ledcWrite(2, 0);
ledcWrite(3, 0);
delay(2000);
Serial.println("Starting color fade loop.");
for (color = 0; color < 255; color++) { // Slew through the color spectrum
hueToRGB(color, brightness); // call function to convert hue to RGB
// write the RGB values to the pins
ledcWrite(1, R); // write red component to channel 1, etc.
ledcWrite(2, G);
ledcWrite(3, B);
delay(100); // full cycle of rgb over 256 colors takes 26 seconds
}
}
// Courtesy http://www.instructables.com/id/How-to-Use-an-RGB-LED/?ALLSTEPS
// function to convert a color to its Red, Green, and Blue components.
void hueToRGB(uint8_t hue, uint8_t brightness)
{
uint16_t scaledHue = (hue * 6);
uint8_t segment = scaledHue / 256; // segment 0 to 5 around the
// color wheel
uint16_t segmentOffset =
scaledHue - (segment * 256); // position within the segment
uint8_t complement = 0;
uint16_t prev = (brightness * ( 255 - segmentOffset)) / 256;
uint16_t next = (brightness * segmentOffset) / 256;
if(invert)
{
brightness = 255 - brightness;
complement = 255;
prev = 255 - prev;
next = 255 - next;
}
switch(segment ) {
case 0: // red
R = brightness;
G = next;
B = complement;
break;
case 1: // yellow
R = prev;
G = brightness;
B = complement;
break;
case 2: // green
R = complement;
G = brightness;
B = next;
break;
case 3: // cyan
R = complement;
G = prev;
B = brightness;
break;
case 4: // blue
R = next;
G = complement;
B = brightness;
break;
case 5: // magenta
default:
R = brightness;
G = complement;
B = prev;
break;
}
}Debug Message
xcode-select: note: no developer tools were found at '/Applications/Xcode.app', requesting install. Choose an option in the dialog to download the command line developer tools.
exit status 1
Error compiling for board ESP32-WROOM-DA Module.
Other Steps to Reproduce
To reproduce this error you will need to have a MACOS without Xcode installed. When I clicked the install request no software was found by the Apple search.
I have checked existing issues, online documentation and the Troubleshooting Guide
- I confirm I have checked existing issues, online documentation and Troubleshooting guide.