#include <xs1.h>
#include <platform.h>
#include <print.h>

in port p_uart_rx = XS1_PORT_1O;

void super_simple_test( port in p_UART_RX )
{
	unsigned time, i, bit_time,data;
	unsigned char buf;
	bit_time  = XS1_TIMER_MHZ * 1000000 / 56700U;
	
	printstrln("Running super simple UART test...");
	
	while (1)
	{
		p_UART_RX when pinseq( 0) :> int _ @ time;
		time += bit_time + (bit_time >> 1);

		// sample each bit in the middle.
		for (i = 0; i < 8; i += 1)
		{
			p_UART_RX @ time :> >> data;
			time += bit_time;
		}

		// reshuffle the data.
		buf = (unsigned char) (data >> 24);
		printchar(buf);
	}
}

int main (void)
{
	super_simple_test( p_uart_rx );
	return 0;
}