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ESP32 Morse Code

Arduino ESP32 Morse Code Library

This Morse Code library allows the programmer to generate Morse Code via a GPIO pin or send audio Morse Code via the on-board DAC.

Usage

Clone the library to your project:

	git clone https://github.com/basepr1me/ESP32-Morse-Code.git libraries/Morse

Two class instantiation methods are in place:

	Morse(TYPE, PIN/DAC_CHANNEL);
	Morse(TYPE, PIN/DAC_CHANNEL, WPM);

Types available are:

	M_GPIO	// GPIO Pin Type
	M_DAC	// DAC_CHANNEL Type

It is highly desirable to configure the DAC CW generator by hand:

	dac_cw_config_t dac_cw_config;

	dac_cw_config.en_ch = DAC_CHANNEL_2;
	dac_cw_config.scale = DAC_CW_SCALE_2;
	dac_cw_config.phase = DAC_CW_PHASE_180;
	dac_cw_config.freq = 550;

	morse_dac.dac_cw_configure(&dac_cw_config);

Pro-sign Morse Code can be generated using backticks:

	String tx = "ab2cd de a2bcd `sos`";

To enable the Morse Code, two watchdogs are available:

	morse.gpio_watchdog();
	morse_dac.dac_watchdog();

To set the WPM, two functions are available:

	morse.gpio_set_wpm(WPM)
	morse.dac_set_wpm(WPM)

Example

See the LED_DAC Example file for more information.

Notes

Only two DAC pins are available on the ESP32. These pins are:

	DAC_CHANNEL_1: 25
	DAC_CHANNEL_2: 26

I don't pretend to know anything about writing Arduino libraries. This style is OpenBSD style and may not look right in the Arduino IDE, since I don't use it.

Author

Tracey Emery

If you like this software, consider donating.

See the License file for more information.