Esempi in C++ (Cpp) per uart_lsr_clear

Esempio n. 1

File: serial.c Progetto: Biamp-Systems/blackfin-uboot

static int uart_getc(uint32_t uart_base)
{
	uint16_t uart_rbr_val;

	/* wait for data ! */
	while (!uart_tstc(uart_base))
		continue;

	/* grab the new byte */
	uart_rbr_val = bfin_read(&pUART->rbr);

#ifdef CONFIG_DEBUG_SERIAL
	/* grab & clear the LSR */
	uart_lsr_t uart_lsr_val = uart_lsr_read(uart_base);

	cached_lsr[cache_count] = uart_lsr_val;
	cached_rbr[cache_count] = uart_rbr_val;
	cache_count = (cache_count + 1) % ARRAY_SIZE(cached_lsr);

	if (uart_lsr_val & (OE|PE|FE|BI)) {
		printf("\n[SERIAL ERROR]\n");
		do {
			--cache_count;
			printf("\t%3zu: RBR=0x%02x LSR=0x%02x\n", cache_count,
				cached_rbr[cache_count], cached_lsr[cache_count]);
		} while (cache_count > 0);
		return -1;
	}
#endif
	uart_lsr_clear(uart_base);

	return uart_rbr_val;
}

Esempio n. 2

/* Symbol for common u-boot code to call. */
int serial_init(void)
{
	serial_initialize();
	serial_setbrg();
	uart_lsr_clear();
#ifdef CONFIG_DEBUG_SERIAL
	cache_count = 0;
	memset(cached_lsr, 0x00, sizeof(cached_lsr));
	memset(cached_rbr, 0x00, sizeof(cached_rbr));
#endif
	return 0;
}

Esempio n. 3

int serial_getc(void)
{
	uint16_t uart_rbr_val;

	/* wait for data ! */
	while (!serial_tstc())
		continue;

	/* grab the new byte */
	uart_rbr_val = *pUART_RBR;

#ifdef CONFIG_DEBUG_SERIAL
	/* grab & clear the LSR */
	uint16_t uart_lsr_val = uart_lsr_read();

	cached_lsr[cache_count] = uart_lsr_val;
	cached_rbr[cache_count] = uart_rbr_val;
	cache_count = (cache_count + 1) % ARRAY_SIZE(cached_lsr);

	if (uart_lsr_val & (OE|PE|FE|BI)) {
		uint16_t dll, dlh;
		printf("\n[SERIAL ERROR]\n");
		ACCESS_LATCH();
		dll = *pUART_DLL;
		dlh = *pUART_DLH;
		ACCESS_PORT_IER();
		printf("\tDLL=0x%x DLH=0x%x\n", dll, dlh);
		do {
			--cache_count;
			printf("\t%3i: RBR=0x%02x LSR=0x%02x\n", cache_count,
				cached_rbr[cache_count], cached_lsr[cache_count]);
		} while (cache_count > 0);
		return -1;
	}
#endif
	uart_lsr_clear();

	return uart_rbr_val;
}