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Merge pull request #48 from leonardocavagnis/adc_config_fix
Fixing ADC initialization function to work properly on Portenta H7
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| <img src="https://content.arduino.cc/website/Arduino_logo_teal.svg" height="100" align="right" /> | ||
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| `Arduino_AdvancedAnalog` 〰 | ||
| =========================== | ||
| [](https://github.com/arduino-libraries/Arduino_AdvancedAnalog/actions/workflows/compile-examples.yml) | ||
| [](https://github.com/arduino-libraries/Arduino_AdvancedAnalog/actions/workflows/spell-check.yml) | ||
| [](https://github.com/arduino-libraries/Arduino_AdvancedAnalog/actions/workflows/sync-labels.yml) | ||
| [](https://github.com/arduino-libraries/Arduino_AdvancedAnalog/actions?workflow=Arduino+Lint) | ||
| # 〰️ Arduino AdvancedAnalog Library | ||
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| Advanced Analog Library for Arduino Giga. | ||
| The Arduino AdvancedAnalog library is designed to offer high performance DAC/ADC applications on boards based on the STM32H7 microcontroller. | ||
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| ## :mag_right: Resources | ||
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| * [How to install a library](https://www.arduino.cc/en/guide/libraries) | ||
| * [Help Center](https://support.arduino.cc/) | ||
| * [Forum](https://forum.arduino.cc) | ||
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| ## :bug: Bugs & Issues | ||
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| If you want to report an issue with this library, you can submit it to the [issue tracker](https://github.com/arduino-libraries/Arduino_AdvancedAnalog/issues) of this repository. Remember to include as much detail as you can about your hardware set-up, code and steps for reproducing the issue. Make sure you're using an original Arduino board. | ||
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| ## :technologist: Development | ||
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| There are many ways to contribute: | ||
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| * Improve documentation and examples | ||
| * Fix a bug | ||
| * Test open Pull Requests | ||
| * Implement a new feature | ||
| * Discuss potential ways to improve this library | ||
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| You can submit your patches directly to this repository as Pull Requests. Please provide a detailed description of the problem you're trying to solve and make sure you test on real hardware. | ||
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| ## :yellow_heart: Donations | ||
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| This open-source code is maintained by Arduino with the help of the community. We invest a considerable amount of time in testing code, optimizing it and introducing new features. Please consider [donating](https://www.arduino.cc/en/donate/) or [sponsoring](https://github.com/sponsors/arduino) to support our work, as well as [buying original Arduino boards](https://store.arduino.cc/) which is the best way to make sure our effort can continue in the long term. | ||
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| ## Known issues | ||
| * ADC is running at the slowest possible clock (PCLK), should probably set up a PLL and change the clock source. | ||
| 📖 For more information about this library please read the documentation [here](./docs/). |
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| # Arduino_AdvancedAnalog library | ||
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| The **Arduino_AdvancedAnalog** library is designed for high performance DAC/ADC applications on boards based on the STM32H747XI microcontroller: | ||
| [](../LICENSE) | ||
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| The **Arduino_AdvancedAnalog** library is designed to offer high performance DAC/ADC applications on boards based on the STM32H747XI microcontroller: | ||
| - [Arduino GIGA R1 WiFi](https://store.arduino.cc/products/giga-r1-wifi) | ||
| - [Arduino Portenta H7](https://store.arduino.cc/products/portenta-h7) | ||
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| To use this library: | ||
| ## Features | ||
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| - ADC/DAC parameters fine tuning: resolution, channel number, queue number and size | ||
| - ADC acquisition with DMA in double buffering mode | ||
| - ADC Multichannel acquisition | ||
| - DAC Multichannel writing | ||
| - Storing ADC samples history in multiple queues | ||
| ## Guides | ||
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| To learn more about using the DAC & ADC on the GIGA R1 WiFi, check out the [GIGA Advanced DAC/ADC Guide](https://docs.arduino.cc/tutorials/giga-r1-wifi/giga-audio). | ||
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| This includes examples such as audio playback from USB storage, generate sine waves and more. | ||
| ## Usage | ||
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| ### ADC | ||
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| To use this library for ADC applications, you must have a supported Arduino board and include the AdvancedAnalog library in your Arduino sketch. Here is a minimal example: | ||
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| ```cpp | ||
| #include <Arduino_AdvancedAnalog.h> | ||
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| AdvancedADC adc1(A0); | ||
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| void setup() { | ||
| Serial.begin(9600); | ||
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| // Initialize ADC with: resolution, sample rate, number of samples per channel, queue depth | ||
| if (!adc1.begin(AN_RESOLUTION_16, 16000, 32, 64)) { | ||
| Serial.println("Failed to start ADC!"); | ||
| while (1); | ||
| } | ||
| } | ||
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| void loop() { | ||
| // Check if an ADC measurement is ready | ||
| if (adc1.available()) { | ||
| // Get read buffer | ||
| SampleBuffer buf = adc1.read(); | ||
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| // Print sample from read buffer | ||
| Serial.println(buf[0]); | ||
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| // Release read buffer | ||
| buf.release(); | ||
| } | ||
| } | ||
| ``` | ||
| #### ADC Multichannel (GIGA R1 WiFi) | ||
| This library supports concurrent usage of up to **three** ADCs (_ADC1_, _ADC2_ and _ADC3_). | ||
| Each ADC instance can handle up to **five** channels. | ||
| **Note:** It's important to be aware that certain pins cannot be used across multiple ADCs or cannot share the same ADC. | ||
| *Please ensure that you refer to tables below when configuring your project to avoid conflicts in pin assignments.* | ||
| Below is a table illustrating the pin mapping for each ADC in **Arduino Giga R1 WiFi**: | ||
| | Pin | ADC1 | ADC2 | ADC3 | | ||
| |-------|-------|-------|-------| | ||
| | A0 | X | X | | | ||
| | A1 | X | X | | | ||
| | A2 | X | X | | | ||
| | A3 | X | X | | | ||
| | A4 | X | X | | | ||
| | A5 | X | X | X | | ||
| | A6 | X | X | X | | ||
| | A7 | X | | | | ||
| | A8 | | | X | | ||
| | A9 | | | X | | ||
| | A10 | X | X | | | ||
| | A11 | X | X | | | ||
| Here is a example for the Arduino GIGA R1 WiFi: | ||
| ```cpp | ||
| #include <Arduino_AdvancedAnalog.h> | ||
| AdvancedADC adc_a(A0, A1); | ||
| /* Mapped to ADC1 */ | ||
| AdvancedADC adc_b(A2); | ||
| /* Mapped to ADC2, because ADC1 is occupied by A0 and A1 */ | ||
| void setup() { | ||
| ... | ||
| ``` | ||
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| #### ADC Multichannel (Portenta H7) | ||
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| Below is a table illustrating the pin mapping for each ADC in **Portenta H7**: | ||
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| | Pin | ADC1 | ADC2 | ADC3 | | ||
| |-------|-------|-------|-------| | ||
| | A0 | X | X | | | ||
| | A1 | X | X | | | ||
| | A2 | | | X | | ||
| | A3 | | | X | | ||
| | A4 | X | X | X | | ||
| | A5 | X | X | | | ||
| | A6 | X | X | | | ||
| | A7 | X | X | | | ||
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| Here is an example for the Portenta H7: | ||
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| ```cpp | ||
| #include <Arduino_AdvancedAnalog.h> | ||
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| AdvancedADC adc_c(A2, A3, A4); | ||
| /* Mapped to ADC3 */ | ||
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| AdvancedADC adc_d(A5); | ||
| /* Mapped to ADC1 */ | ||
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| void setup() { | ||
| ... | ||
| ``` | ||
| ### DAC | ||
| To use this library for DAC application, you must have a supported Arduino board and include the AdvancedAnalog library in your Arduino sketch. Here is a minimal example for the Arduino GIGA R1 WiFi: | ||
| ```cpp | ||
| #include <Arduino_AdvancedAnalog.h> | ||
| AdvancedDAC dac1(A12); | ||
| void setup() { | ||
| Serial.begin(9600); | ||
| // Initialize DAC with: resolution, sample rate, number of samples per channel, queue depth | ||
| if (!dac1.begin(AN_RESOLUTION_12, 8000, 32, 64)) { | ||
| Serial.println("Failed to start DAC!"); | ||
| while (1); | ||
| } | ||
| } | ||
| void loop() { | ||
| if (dac1.available()) { | ||
| // Get a free buffer for writing | ||
| SampleBuffer buf = dac1.dequeue(); | ||
| // Write data to buffer (Even position: 0, Odd position: 0xFFF) | ||
| for (int i=0; i<buf.size(); i++) { | ||
| buf.data()[i] = (i % 2 == 0) ? 0: 0xFFF; | ||
| } | ||
| // Write the buffer to DAC | ||
| dac1.write(buf); | ||
| } | ||
| } | ||
| ``` | ||
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| ## Examples | ||
| - **[Advanced](../examples/Advanced):** This folder contains examples showing how to configure ADC/DAC to read/write data. | ||
| - **[Beginner](../examples/Beginner):** This folder contains examples showing how to generate waveforms with DAC. | ||
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| ## API | ||
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| The API documentation can be found [here](./api.md). | ||
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| ## License | ||
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| This library is released under the [LGPLv2.1 license](../LICENSE). | ||
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