peripheral_test.c

此文档为采用FPGA实现的以太网MAC层

#include "excalibur.h"
#include "i2c.h"


//#define ADC_PRESENT

//send 8 bits to the memory
#ifdef ADC_PRESENT
void adc_txchar (Uint16 data)
{
    while (!(na_adc->np_spistatus & np_spistatus_trdy_mask));
    na_adc->np_spitxdata = data;
}

//receive 8 bits from the memory
Uint16 adc_rxchar ()
{
    while (!(na_adc->np_spistatus & np_spistatus_rrdy_mask));
    return (na_adc->np_spirxdata);
}
#else
void adc_txchar(Uint16 data)
{
	return;
}

Uint16 adc_rxchar()
{
	return 1;
}
#endif



int main()
{
	
	volatile Uint8 answer;
	volatile Uint8 data[10];
	
	volatile Uint32 x;
	volatile Uint32 y;
	volatile Uint32 time;
	
	T_i2c *psti2c = (T_i2c *) na_i2c;
	

	/* Initialize I2C Verilog module */
	i2c_init(psti2c);

	printf("Peripheral test executing from %X\n",nasys_program_mem);
	


	/////////////////////////////////////////////////////
	
	printf("Press 'a' for SPI ADC test\n");
	printf("Press 'b' for Button->LED test\n");
	printf("Press 'c' to view RTC time\n");
	printf("Press 'l' for 5VIO test\n");
	printf("Press 's' to set RTC time to 0 and enable\n");
	printf("Press 't' to view Temperature\n");
	printf("Press 'x' to EXIT\n");
	
	
	
	while (1)
	{
		if (na_uart_dbg->np_uartstatus & np_uartstatus_rrdy_mask)
		{
			answer = na_uart_dbg->np_uartrxdata;
			
			switch (answer)
			{
			case 'a':
				
				/* SPI ADC test */
				printf("Displaying ADC Channel 1+2 on LED's...\n");
				
				while (1)
				{
					adc_txchar(0x7800);
					x = adc_rxchar() >> 2;
					adc_txchar(0x6800);
					x += (adc_rxchar() >> 2);
					na_led_port->np_piodata = (x) & 0xff;
					
				}
				break;
				
			case 'b':
				/* Push-button test */
				
				printf("Displaying push-buttons on LED's...\n");
				
				while (1)
				{
					na_led_port->np_piodata = na_pb->np_piodata;
				}
				
				break;
				
			case 'c':
				/* Read RTC time */
				
				rtc_inttotime(i2c_rtc_gettime(psti2c), data);
				printf("H: %d M: %d S: %d\n",data[0],data[1],data[2]);
				printf("Please make another selection\n");
				break;
				
				
			case 'l':
				
				printf("Running 5VIO test...\n");
				
				
				//na_led_port->np_piodata = na_hv_in->np_piodata;
				printf("5V Input port reads %X\n",na_hv_in->np_piodata);
				na_hv_out->np_piodata = 0xAA;
				printf("5V Input port reads %X\n",na_hv_in->np_piodata);
				na_hv_out->np_piodata = 0x55;
				printf("5V Input port reads %X\n",na_hv_in->np_piodata);
				
				
				
				break;
				
			
				
			case 's':
				/* Sets RTC time to 0 and enables */
				
				printf("Setting time\n");
				time = rtc_timetoint(0, 0, 0);
				printf("Return code: %d\n",i2c_rtc_settime(psti2c,time));
				printf("Please make another selection\n");
				break;
				
				
			case 't':
				/* Gets Temperature */
				
				x = i2c_get_temp(psti2c);
				printf("Get temperature returned: %d\n",x);
				printf("Please make another selection\n");
				
				break;
				
			case 'x':
				
				exit(0);
				break;
				
				
			default:
				
				printf("Invalid\n");
				
				break;
				
				
				
			} /* End switch/case */
			
		} /* End rxchar test */
		
	} /* end while loop */
	
	
	
	return 0;
	
	
} /* end main */