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esp32:esp32_main [2020/10/13 20:04] admin [Espressif ESP32 Development Board] |
esp32:esp32_main [2020/11/17 16:01] (current) admin [DAC and ADC] |
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[[https:// | [[https:// | ||
[[https:// | [[https:// | ||
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+ | ---- | ||
+ | ===== DAC and ADC ===== | ||
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+ | **ADC**\\ | ||
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+ | ADC_0db: sets no attenuation (1V input = ADC reading of 1088). | ||
+ | ADC_2_5db: sets an attenuation of 1.34 (1V input = ADC reading of 2086). | ||
+ | ADC_6db: sets an attenuation of 1.5 (1V input = ADC reading of 2975). | ||
+ | ADC_11db: sets an attenuation of 3.6 (1V input = ADC reading of 3959). | ||
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+ | taken from: [[https:// | ||
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+ | ---- | ||
+ | **DAC**\\ | ||
+ | The ESP32 has two DAC pins, GPIO25 and GPIO26. The resolution is 8 bits.\\ | ||
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+ | For generating a sine wave one finds a good manual here: [[https:// | ||
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---- | ---- | ||