✨ (dac): Add CoreDAC spike

Co-Authored-By: Maxime Blanc <[email protected]>
Co-Authored-By: SamHadjes <[email protected]>

spikes/CMakeLists.txt

@@ -13,6 +13,7 @@ add_subdirectory(${SPIKES_DIR}/lk_command_kit)
 add_subdirectory(${SPIKES_DIR}/lk_config_kit)
 add_subdirectory(${SPIKES_DIR}/lk_coreled)
 add_subdirectory(${SPIKES_DIR}/lk_core_touch_sensor)
+add_subdirectory(${SPIKES_DIR}/lk_dac)
 add_subdirectory(${SPIKES_DIR}/lk_event_queue)
 add_subdirectory(${SPIKES_DIR}/lk_file_reception)
 add_subdirectory(${SPIKES_DIR}/lk_file_manager_kit)
@@ -57,6 +58,7 @@ add_dependencies(spikes_leka
 	spike_lk_command_kit
 	spike_lk_coreled
 	spike_lk_core_touch_sensor
+	spike_lk_dac
 	spike_lk_event_queue
 	spike_lk_file_reception
 	spike_lk_file_manager_kit

spikes/lk_dac/CMakeLists.txt

@@ -0,0 +1,22 @@
+# Leka - LekaOS
+# Copyright 2024 APF France handicap
+# SPDX-License-Identifier: Apache-2.0
+
+add_mbed_executable(spike_lk_dac)
+
+target_include_directories(spike_lk_dac
+	PRIVATE
+	.
+)
+
+target_sources(spike_lk_dac
+	PRIVATE
+	main.cpp
+)
+
+target_link_libraries(spike_lk_dac
+	CoreSTM32Hal
+	CoreDAC
+)
+
+target_link_custom_leka_targets(spike_lk_dac)

spikes/lk_dac/main.cpp

@@ -0,0 +1,77 @@
+// Leka - LekaOS
+// Copyright 2024 APF France handicap
+// SPDX-License-Identifier: Apache-2.0
+
+#include <cmath>
+
+#include "rtos/ThisThread.h"
+
+#include "CoreDAC.h"
+#include "CoreSTM32Hal.h"
+#include "CoreSTM32HalBasicTimer.h"
+#include "DigitalOut.h"
+#include "LogKit.h"
+
+using namespace leka;
+using namespace std::chrono_literals;
+
+auto hal = CoreSTM32Hal {};
+
+namespace audio::internal {
+
+extern "C" auto hal_timer = CoreSTM32HalBasicTimer {hal};
+extern "C" auto coredac	  = CoreDAC {hal, hal_timer};
+
+}	// namespace audio::internal
+
+auto audio_enable = mbed::DigitalOut {SOUND_ENABLE, 1};
+
+constexpr uint32_t sample_rate_hz = 44'100;
+constexpr auto coefficient		  = 10;
+
+void fillBufferWithSinWave(uint16_t *buffer, uint32_t samples_per_period, uint16_t maxValue, uint16_t minValue)
+{
+	auto resolution = 2.0 * M_PI / samples_per_period;
+
+	auto sin0_1		   = [](double value) { return (sin(value) + 1.0) / 2.0; };
+	auto normalization = [maxValue, minValue](double standard_value) {
+		return standard_value * (maxValue - minValue) + minValue;
+	};
+
+	for (uint32_t sample = 0; sample < samples_per_period; sample += coefficient) {
+		auto standard_value	  = sin0_1(sample * resolution);
+		auto normalized_value = normalization(standard_value);
+		std::fill_n(buffer + sample, coefficient, static_cast<uint16_t>(normalized_value));
+	}
+}
+
+auto main() -> int
+{
+	logger::init();
+
+	log_info("Hello, World!\n\n");
+
+	audio::internal::hal_timer.initialize(sample_rate_hz * coefficient);
+	audio::internal::coredac.initialize();
+
+	const uint32_t frequency = 440;
+	const uint16_t maxVal	 = 0xFFF;
+	const uint16_t minVal	 = 0x000;
+	std::array<uint16_t, sample_rate_hz * coefficient / frequency> buffer {};
+	fillBufferWithSinWave(buffer.data(), buffer.size(), maxVal, minVal);
+
+	audio::internal::coredac.registerDataToPlay(buffer);
+
+	log_info("buffer size: %d", buffer.size());
+	log_info("Start sound");
+	audio::internal::coredac.start();
+
+	rtos::ThisThread::sleep_for(1s);
+
+	log_info("Stop sound");
+	audio::internal::coredac.stop();
+
+	while (true) {
+		rtos::ThisThread::sleep_for(1min);
+	}
+}