feat-hal-2 (#4)

Finished working initial version

Co-authored-by: Andis Zīle <andis.jarganns@gmail.com>
Reviewed-on: #4
Co-authored-by: Andis Zīle <andis.jargans@gmail.com>
Co-committed-by: Andis Zīle <andis.jargans@gmail.com>

firmware/src/bsp/dout.cpp

@@ -0,0 +1,37 @@
+/**** Includes ****/
+#include "../utils/utils.h"
+#include "mcu/mcu_hal.h"
+#include "dout.h"
+
+using namespace bsp;
+
+/**** Private definitions ****/
+/**** Private constants ****/
+/**** Private variables ****/
+/**** Private function declarations ****/
+/**** Public function definitions ****/
+bsp::DigitalOut::DigitalOut(void)
+{
+	return;
+}
+
+bsp::DigitalOut::~DigitalOut(void)
+{
+	return;
+}
+
+void bsp::DigitalOut::write(int8_t level)
+{
+	if(this->is_inverted)
+	{
+		if(level==0) level = 1;
+		else if (level > 0) level  = 0;
+	};
+	
+	mcu::gpio_write(this->gpio_ch, level);
+	
+	this->last_writen = level;
+}
+
+/**** Private function definitions ****/
+