From 6ded6b1ebe6dfdbcebdec652df58d37b3f2932c4 Mon Sep 17 00:00:00 2001
From: Raphael Lehmann <raphael@rleh.de>
Date: Tue, 21 Dec 2021 07:44:27 +0100
Subject: [PATCH] [example] ADS816X ADC example for Nucleo-F429ZI

---
 examples/nucleo_f429zi/ads_ads816x/main.cpp   | 68 +++++++++++++++++++
 .../nucleo_f429zi/ads_ads816x/project.xml     | 11 +++
 2 files changed, 79 insertions(+)
 create mode 100644 examples/nucleo_f429zi/ads_ads816x/main.cpp
 create mode 100644 examples/nucleo_f429zi/ads_ads816x/project.xml

diff --git a/examples/nucleo_f429zi/ads_ads816x/main.cpp b/examples/nucleo_f429zi/ads_ads816x/main.cpp
new file mode 100644
index 0000000000..44463c58e8
--- /dev/null
+++ b/examples/nucleo_f429zi/ads_ads816x/main.cpp
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2021, Raphael Lehmann
+ *
+ * This file is part of the modm project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+// ----------------------------------------------------------------------------
+
+#include <modm/board.hpp>
+#include <modm/platform/spi/spi_master_1.hpp>
+#include <modm/driver/adc/ads816x.hpp>
+
+using namespace Board;
+
+using SpiMaster = SpiMaster1;
+using Cs = GpioA4;
+using Mosi = GpioB5;
+using Miso = GpioB4;
+using Sck = GpioB3;
+
+using Ads816x = modm::Ads816x<SpiMaster, Cs>;
+
+Ads816x adc{};
+
+int
+main()
+{
+	Board::initialize();
+	Leds::setOutput();
+
+	MODM_LOG_INFO << "ADS816X Demo on Nucleo-F429ZI\n" << modm::endl;
+
+	SpiMaster::initialize<Board::SystemClock, 10_MHz>();
+	SpiMaster::connect<Sck::Sck, Mosi::Mosi, Miso::Miso>();
+
+	MODM_LOG_INFO << "ADC in manual mode:" << modm::endl;
+	RF_CALL_BLOCKING(adc.initialize(modm::ads816x::Mode::Manual));
+	// Set channel 0 as next channel, ignore result
+	RF_CALL_BLOCKING(adc.manualModeConversion(0));
+
+	for (uint8_t i{1}; i <= 8; i++) {
+		uint16_t result = RF_CALL_BLOCKING(adc.manualModeConversion(i));
+		MODM_LOG_INFO.printf("ADC Channel %u: %05u\n", (i-1), result);
+	}
+
+	MODM_LOG_INFO << "\nADC in auto sequence mode:" << modm::endl;
+	RF_CALL_BLOCKING(adc.initialize(modm::ads816x::Mode::AutoSequence));
+
+	uint32_t counter(0);
+
+	while (true)
+	{
+		Leds::write(counter % ((1 << (Leds::width+1)) - 1));
+
+		std::array<uint16_t, 8> results;
+		RF_CALL_BLOCKING(adc.autoSequenceConversion(0xff, results));
+		MODM_LOG_INFO.printf("ADC Sequence: %05u %05u %05u %05u %05u %05u %05u %05u\n",
+							results[0], results[1], results[2], results[3],
+							results[4], results[5], results[6], results[7]);
+
+		modm::delay(Button::read() ? 1ms : 1000ms);
+	}
+
+	return 0;
+}
diff --git a/examples/nucleo_f429zi/ads_ads816x/project.xml b/examples/nucleo_f429zi/ads_ads816x/project.xml
new file mode 100644
index 0000000000..624827aad4
--- /dev/null
+++ b/examples/nucleo_f429zi/ads_ads816x/project.xml
@@ -0,0 +1,11 @@
+<library>
+  <extends>modm:nucleo-f429zi</extends>
+  <options>
+    <option name="modm:build:build.path">../../../build/nucleo_f429zi/ads_ads816x</option>
+  </options>
+  <modules>
+    <module>modm:build:scons</module>
+    <module>modm:platform:spi:1</module>
+    <module>modm:driver:ads816x</module>
+  </modules>
+</library>