Added I2C support for raspi & first rework of debugging

include/sta/devices/raspi/delay.hpp

@@ -0,0 +1,44 @@
+/**
+ * @file
+ * @brief Delay functions.
+ *
+ * Configuration:
+ *   * STA_RASPI_DELAY_US_TIM: 1 MHz TIM instance used by sta::delayUs
+ *
+ * NOTE: TIM time base must be started before use of sta::delayUs by calling sta::initHAL.
+ *       When using startup system task this is handled automatically.
+ */
+#ifndef STA_CORE_RASPI_DELAY_HPP
+#define STA_CORE_RASPI_DELAY_HPP
+
+
+// Only enable module on RASPI platform
+#include <sta/config.hpp>
+
+
+#if defined(STA_PLATFORM_RASPI) || defined(DOXYGEN)
+
+#include <cstdint>
+
+
+namespace sta
+{
+    /**
+     * @brief Millisecond delay.
+     *
+     * @param ms    Milliseconds
+     */
+    void delayMs(uint32_t ms);
+
+    /**
+     * @brief Microsecond delay.
+     *
+     * @param us    Microseconds
+     */
+    void delayUs(uint32_t us);
+} // namespace sta
+
+
+#endif // STA_PLATFORM_RASPI
+
+#endif // STA_CORE_RASPI_DELAY_HPP