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#!/usr/bin/perl
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use strict;
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# Create stimulus/test file for 16550/16750 compatible UART cores
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#
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# Author: Sebastian Witt
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# Date: 06.02.2008
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# Version: 1.4
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# License: GPL
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#
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# History: 1.0 - Initial version
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# 1.1 - Update
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# 1.2 - FIFO test update
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# 1.3 - Automatic flow control tests
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# 1.4 - FIFO 64 tests
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#
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#
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# Global control settings
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#
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use constant CYCLE => 30e-9; # Cycle time
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#use constant CYCLE => 1e-9; # Cycle time
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use constant LOCAL_LOOP => 1; # Use UART local loopback
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use constant INITREGS => 1; # Initialize registers
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use constant TEST_CONTROL => 1; # Test control lines
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use constant TEST_INTERRUPT => 1; # Test interrupts
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use constant TEST_DEFAULT => 1; # Test standard modes
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use constant TEST_FIFO => 1; # Test 64 byte FIFO mode
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use constant TEST_FIFO64 => 1; # Test 64 byte FIFO mode
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use constant TEST_AFC => 1; # Test automatic flow control
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use constant UART_ADDRESS => 0x3f8; # UART base address
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# Prototypes
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sub logmessage($); # Message
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sub uart_write($$); # Address, Data
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sub uart_read($$); # Address, Expected data
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sub uart_setbaudrate($); # Baudrate
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sub uart_eu_send($); # Send serial data from external UART
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##################################################################
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# Main process
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##################################################################
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# Register addresses
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use constant {
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RBR => 0x00,
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DLL => 0x00,
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THR => 0x00,
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DLM => 0x01,
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IER => 0x01,
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IIR => 0x02,
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FCR => 0x02,
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LCR => 0x03,
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MCR => 0x04,
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LSR => 0x05,
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MSR => 0x06,
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SCR => 0x07,
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};
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# Register settings
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use constant {
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IER_ERBI => 0x01,
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IER_ETBEI => 0x02,
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IER_ELSI => 0x04,
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IER_EDSSI => 0x08,
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IIR_IP => 0x01,
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IIR_NONE => 0x01,
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IIR_RLSI => 0x06,
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IIR_RDAI => 0x04,
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IIR_CTOI => 0x0C,
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IIR_THRI => 0x02,
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IIR_MSRI => 0x00,
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IIR_F64E => 0x20,
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IIR_FE => 0xC0,
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FCR_FE => 0x01,
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FCR_RXFR => 0x02,
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FCR_TXFR => 0x04,
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FCR_DMS => 0x08,
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FCR_F64E => 0x20,
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FCR_RT1 => 0x00,
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FCR_RT4 => 0x40,
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FCR_RT8 => 0x80,
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FCR_RT14 => 0xC0,
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FCR_RT16 => 0x40,
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FCR_RT32 => 0x80,
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FCR_RT56 => 0xC0,
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LCR_WLS5 => 0x00,
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LCR_WLS6 => 0x01,
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LCR_WLS7 => 0x02,
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LCR_WLS8 => 0x03,
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LCR_STB => 0x04,
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LCR_PEN => 0x08,
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LCR_EPS => 0x10,
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LCR_SP => 0x20,
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LCR_BC => 0x40,
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LCR_DLAB => 0x80,
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MCR_DTR => 0x01,
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MCR_RTS => 0x02,
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MCR_OUT1 => 0x04,
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MCR_OUT2 => 0x08,
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MCR_LOOP => 0x10,
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MCR_AFE => 0x20,
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LSR_DR => 0x01,
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LSR_OE => 0x02,
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LSR_PE => 0x04,
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LSR_FE => 0x08,
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LSR_BI => 0x10,
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LSR_THRE => 0x20,
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LSR_TEMT => 0x40,
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LSR_RXFE => 0x80,
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MSR_DCTS => 0x01,
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MSR_DDSR => 0x02,
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MSR_TERI => 0x04,
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MSR_DDCD => 0x08,
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MSR_CTS => 0x10,
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MSR_DSR => 0x20,
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MSR_RI => 0x40,
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MSR_DCD => 0x80,
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};
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# Baudrate generator clock input period
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use constant BAUDGENCLK => 1.8432e6;
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# Current DLM/DLL register
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my $divisor = 0x0000;
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# Shadow registers with default values after reset
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my $RBR = 0x00;
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my $IER = 0x00;
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my $IIR = IIR_IP;
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my $FCR = 0x00;
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my $LCR = 0x00;
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my $MCR = 0x00;
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my $LSR = LSR_THRE | LSR_TEMT;
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#my $MSR = 0x00;
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my $MSR = 0x0F;
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my $SCR = 0x00;
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# De-assert reset (if available)
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waitcycle (10);
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print ("#SET 0 1 1 1 1\n");
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if (INITREGS) {
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logmessage ("UART: Initializing...");
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uart_write (IER, $IER);
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uart_write (FCR, $FCR);
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uart_write (LCR, $LCR);
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uart_write (MCR, $MCR);
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uart_write (SCR, $SCR);
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}
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logmessage ("UART: Checking registers after reset...");
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uart_read (RBR, $RBR);
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uart_read (RBR, $RBR);
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uart_read (IER, $IER);
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uart_read (IIR, $IIR);
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uart_read (LCR, $LCR);
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uart_read (MCR, $MCR);
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uart_read (LSR, $LSR);
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uart_read (MSR, $MSR);
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uart_read (SCR, $SCR);
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#logmessage ("UART: Checking SCR write/read...");
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#for (my $i = 0; $i <= 0x10; $i++) {
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# uart_write (SCR, $i);
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# uart_read (SCR, $i);
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#}
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if (LOCAL_LOOP) {
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logmessage ("UART: Enabling local LOOP mode...");
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uart_write (MCR, MCR_LOOP);
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uart_read (MCR, MCR_LOOP);
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}
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uart_setbaudrate (115200);
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logmessage ("UART: Enabling interrupts...");
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uart_write (IER, IER_ERBI | IER_ETBEI | IER_ELSI | IER_EDSSI);
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uart_read (IER, IER_ERBI | IER_ETBEI | IER_ELSI | IER_EDSSI);
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uart_read (IIR, IIR_THRI);
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uart_read (IIR, IIR_NONE);
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sub uart_check_control_lines ()
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{
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logmessage ("UART: Checking control lines...");
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uart_write (MCR, $MCR | MCR_DTR);
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uart_read (MCR, $MCR);
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uart_read (IIR, IIR_MSRI);
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uart_read (MSR, MSR_DSR | MSR_DDSR);
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uart_read (MSR, MSR_DSR);
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uart_read (IIR, IIR_NONE);
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uart_write (MCR, $MCR | MCR_RTS);
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uart_read (MCR, $MCR);
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uart_read (IIR, IIR_MSRI);
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uart_read (MSR, MSR_CTS | MSR_DSR | MSR_DCTS);
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uart_read (MSR, MSR_CTS | MSR_DSR);
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uart_read (IIR, IIR_NONE);
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uart_write (MCR, $MCR | MCR_OUT1);
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uart_read (MCR, $MCR);
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uart_read (MSR, MSR_CTS | MSR_DSR | MSR_RI);
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uart_read (IIR, IIR_NONE);
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uart_write (MCR, $MCR & ~MCR_OUT1);
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uart_read (MCR, $MCR);
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uart_read (IIR, IIR_MSRI);
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uart_read (MSR, MSR_CTS | MSR_DSR | MSR_TERI);
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uart_read (IIR, IIR_NONE);
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uart_read (MSR, MSR_CTS | MSR_DSR);
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uart_write (MCR, $MCR | MCR_OUT2);
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uart_read (MCR, $MCR);
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uart_read (IIR, IIR_MSRI);
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uart_read (MSR, MSR_CTS | MSR_DSR | MSR_DCD | MSR_DDCD);
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uart_read (MSR, MSR_CTS | MSR_DSR | MSR_DCD);
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uart_read (IIR, IIR_NONE);
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uart_write (MCR, $MCR & ~(MCR_DTR | MCR_RTS | MCR_OUT1 | MCR_OUT2));
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uart_read (MCR, $MCR);
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uart_read (IIR, IIR_MSRI);
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uart_read (MSR, MSR_DDSR | MSR_DCTS | MSR_DDCD);
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uart_read (IIR, IIR_NONE);
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}
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sub uart_check_interrupt_control ()
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{
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logmessage ("UART: Checking interrupt priority control...");
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uart_write (MCR, $MCR | MCR_DTR);
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uart_write (MCR, $MCR & ~MCR_DTR);
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uart_write (THR, 0x12);
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uart_wait (1);
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uart_write (LCR, $LCR | LCR_BC);
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uart_wait (1);
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uart_write (LCR, $LCR & ~LCR_BC);
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uart_read (IIR, IIR_RLSI);
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uart_read (LSR, LSR_DR | LSR_OE | LSR_BI | LSR_FE | LSR_THRE | LSR_TEMT);
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uart_read (IIR, IIR_RDAI);
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uart_read (IIR, IIR_RDAI);
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uart_rrbr (0x00);
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uart_write (THR, 0x34);
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uart_wait (1);
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uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
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uart_write (THR, 0x56);
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uart_read (IIR, IIR_RDAI);
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uart_wait (1);
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uart_read (IIR, IIR_RLSI);
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uart_read (LSR, LSR_DR | LSR_OE | LSR_THRE | LSR_TEMT);
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uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
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uart_read (IIR, IIR_RDAI);
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uart_rrbr (0x56);
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uart_read (IIR, IIR_THRI);
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uart_read (IIR, IIR_MSRI);
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uart_read (IIR, IIR_MSRI);
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uart_read (MSR, MSR_DDSR);
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uart_read (IIR, IIR_NONE);
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uart_write (THR, 0x78);
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uart_wait (1);
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uart_read (IIR, IIR_RDAI);
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uart_rrbr (0x78);
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uart_read (IIR, IIR_THRI);
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uart_read (IIR, IIR_NONE);
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}
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sub uart_check_default ()
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{
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for (my $mode = 0; $mode < 0x40; $mode++) {
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logmessage (sprintf ("UART: Setting LCR to 0x%02X", $mode));
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uart_write (LCR, $mode);
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logmessage ("UART: Transmission test single byte (FIFO disabled)");
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uart_wait (1);
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uart_write (THR, 0x55);
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uart_wait (1);
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uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
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uart_read (IIR, IIR_RDAI);
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uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
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uart_rrbr (0x55);
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uart_read (LSR, LSR_THRE | LSR_TEMT);
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uart_read (IIR, IIR_THRI);
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uart_read (IIR, IIR_NONE);
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logmessage ("UART: Transmission test multiple bytes (FIFO disabled)");
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for (my $i = 0; $i < 10; $i++) {
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uart_read (IIR, IIR_NONE);
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uart_write (THR, $i);
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uart_wait (1);
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uart_read (IIR, IIR_RDAI);
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uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
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uart_rrbr ($i);
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uart_read (IIR, IIR_THRI);
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uart_read (LSR, LSR_THRE | LSR_TEMT);
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}
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#logmessage ("UART: Transmission test loop (FIFO disabled)");
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#for (my $i = 0; $i < 1000; $i++) {
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# if (!($i % 100)) {
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# logmessage ("UART: Loop " . $i);
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# }
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# uart_write (THR, $i);
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# uart_read (IIR, IIR_THRI);
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# uart_wait (1);
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# uart_read (IIR, IIR_RDAI);
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# uart_rrbr ($i);
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# uart_read (IIR, IIR_NONE);
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#}
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302 |
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logmessage ("UART: Transmission test overflow (FIFO disabled)");
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uart_write (THR, 0x55);
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uart_wait (1);
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uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
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uart_read (IIR, IIR_RDAI);
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uart_write (THR, 0xAA);
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uart_wait (1);
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uart_read (IIR, IIR_RLSI);
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uart_read (LSR, LSR_DR | LSR_OE | LSR_THRE | LSR_TEMT);
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uart_read (IIR, IIR_RDAI);
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uart_wait (1);
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uart_read (IIR, IIR_RDAI);
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uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
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uart_rrbr (0xAA);
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uart_read (LSR, LSR_THRE | LSR_TEMT);
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uart_read (IIR, IIR_THRI);
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319 |
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uart_read (IIR, IIR_NONE);
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320 |
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321 |
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logmessage ("UART: Break control test");
|
322 |
|
|
uart_write (LCR, $LCR | LCR_BC);
|
323 |
|
|
uart_read (LCR, $LCR);
|
324 |
|
|
uart_wait (2);
|
325 |
|
|
uart_read (IIR, IIR_RLSI);
|
326 |
|
|
if (($LCR & LCR_PEN) && !($LCR & LCR_EPS)) {
|
327 |
|
|
uart_read (LSR, LSR_DR | LSR_PE | LSR_FE | LSR_BI | LSR_THRE | LSR_TEMT);
|
328 |
|
|
} else {
|
329 |
|
|
uart_read (LSR, LSR_DR | LSR_FE | LSR_BI | LSR_THRE | LSR_TEMT);
|
330 |
|
|
}
|
331 |
|
|
uart_read (IIR, IIR_RDAI);
|
332 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
333 |
|
|
uart_read (RBR, 0x00);
|
334 |
|
|
uart_read (IIR, IIR_NONE);
|
335 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
336 |
|
|
uart_write (LCR, $LCR & ~LCR_BC);
|
337 |
|
|
uart_read (LCR, $LCR);
|
338 |
|
|
uart_wait (2);
|
339 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
340 |
|
|
uart_read (IIR, IIR_NONE);
|
341 |
|
|
}
|
342 |
|
|
|
343 |
|
|
uart_write (LCR, 0x00);
|
344 |
|
|
}
|
345 |
|
|
|
346 |
|
|
sub uart_check_fifo ()
|
347 |
|
|
{
|
348 |
|
|
logmessage ("UART: Enabling FIFO...");
|
349 |
|
|
uart_write (FCR, FCR_FE);
|
350 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE);
|
351 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
352 |
|
|
|
353 |
|
|
logmessage ("UART: Testing FIFO trigger level 1 byte...");
|
354 |
|
|
uart_write (FCR, FCR_FE | FCR_RT1);
|
355 |
|
|
uart_send (1);
|
356 |
|
|
uart_wait (4);
|
357 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
358 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
359 |
|
|
uart_rrbr (0x00);
|
360 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE);
|
361 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
362 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
363 |
|
|
|
364 |
|
|
logmessage ("UART: Testing FIFO trigger level 4 byte...");
|
365 |
|
|
uart_write (FCR, FCR_FE | FCR_RT4);
|
366 |
|
|
uart_send (3);
|
367 |
|
|
uart_wait (7);
|
368 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
369 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
370 |
|
|
uart_rrbr (0x00);
|
371 |
|
|
uart_send (2);
|
372 |
|
|
uart_wait (6);
|
373 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
374 |
|
|
uart_wait (2);
|
375 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
376 |
|
|
uart_rrbr (1);
|
377 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE);
|
378 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
379 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
380 |
|
|
uart_rrbr (2);
|
381 |
|
|
uart_rrbr (0);
|
382 |
|
|
uart_rrbr (1);
|
383 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
384 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
385 |
|
|
|
386 |
|
|
logmessage ("UART: Testing FIFO trigger level 8 byte...");
|
387 |
|
|
uart_write (FCR, FCR_FE | FCR_RT8);
|
388 |
|
|
uart_send (7);
|
389 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
390 |
|
|
uart_wait (11);
|
391 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
392 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
393 |
|
|
uart_rrbr (0x00);
|
394 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE);
|
395 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
396 |
|
|
uart_send (2);
|
397 |
|
|
uart_wait (6);
|
398 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
399 |
|
|
uart_wait (2);
|
400 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
401 |
|
|
uart_rrbr (1);
|
402 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE);
|
403 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
404 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
405 |
|
|
uart_rrbr (2);
|
406 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
407 |
|
|
uart_rrbr (3);
|
408 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
409 |
|
|
uart_rrbr (4);
|
410 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
411 |
|
|
uart_rrbr (5);
|
412 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
413 |
|
|
uart_rrbr (6);
|
414 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
415 |
|
|
uart_rrbr (0);
|
416 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
417 |
|
|
uart_rrbr (1);
|
418 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
419 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
420 |
|
|
|
421 |
|
|
logmessage ("UART: Testing FIFO trigger level 14 byte...");
|
422 |
|
|
uart_write (FCR, FCR_FE | FCR_RT14);
|
423 |
|
|
uart_send (13);
|
424 |
|
|
uart_wait (17);
|
425 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
426 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
427 |
|
|
uart_rrbr (0x00);
|
428 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE);
|
429 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
430 |
|
|
uart_send (2);
|
431 |
|
|
uart_wait (6);
|
432 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
433 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
434 |
|
|
uart_rrbr (1);
|
435 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE);
|
436 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
437 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
438 |
|
|
uart_rrbr (2);
|
439 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
440 |
|
|
uart_rrbr (3);
|
441 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
442 |
|
|
uart_rrbr (4);
|
443 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
444 |
|
|
uart_rrbr (5);
|
445 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
446 |
|
|
uart_rrbr (6);
|
447 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
448 |
|
|
uart_rrbr (7);
|
449 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
450 |
|
|
uart_rrbr (8);
|
451 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
452 |
|
|
uart_rrbr (9);
|
453 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
454 |
|
|
uart_rrbr (10);
|
455 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
456 |
|
|
uart_rrbr (11);
|
457 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
458 |
|
|
uart_rrbr (12);
|
459 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
460 |
|
|
uart_rrbr (0);
|
461 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
462 |
|
|
uart_rrbr (1);
|
463 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
464 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
465 |
|
|
|
466 |
|
|
logmessage ("UART: Testing FIFO overrun...");
|
467 |
|
|
uart_write (FCR, FCR_FE | FCR_RT1);
|
468 |
|
|
uart_send (17);
|
469 |
|
|
uart_wait (17);
|
470 |
|
|
uart_read (IIR, IIR_RLSI | IIR_FE);
|
471 |
|
|
uart_read (LSR, LSR_DR | LSR_OE | LSR_THRE | LSR_TEMT);
|
472 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
473 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
474 |
|
|
uart_rrbr (0x00);
|
475 |
|
|
uart_read (IIR, IIR_RDAI | IIR_FE);
|
476 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
477 |
|
|
uart_write (FCR, FCR_FE | FCR_RXFR);
|
478 |
12 |
hasw |
uart_wait (1);
|
479 |
2 |
hasw |
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
480 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE);
|
481 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
482 |
|
|
|
483 |
|
|
logmessage ("UART: Miscellaneous FIFO tests...");
|
484 |
|
|
uart_write (LCR, 0x03);
|
485 |
|
|
uart_write (IER, IER_ERBI);
|
486 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
487 |
|
|
uart_write (FCR, FCR_FE | FCR_RT14);
|
488 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
489 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
490 |
|
|
logmessage ("UART: Sending 8 words");
|
491 |
|
|
uart_send (8);
|
492 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
493 |
|
|
uart_wait (12);
|
494 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
495 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
496 |
|
|
logmessage ("UART: Receiving 8 words");
|
497 |
|
|
uart_recv (8, 0);
|
498 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
499 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
500 |
|
|
logmessage ("UART: Sending 16 words");
|
501 |
|
|
uart_send (16);
|
502 |
|
|
uart_wait (4);
|
503 |
|
|
logmessage ("UART: Receiving 4 words");
|
504 |
|
|
uart_recv (4, 0);
|
505 |
|
|
logmessage ("UART: Sending 4 words");
|
506 |
|
|
uart_send (4);
|
507 |
|
|
uart_wait (12);
|
508 |
|
|
logmessage ("UART: Receiving 12 words");
|
509 |
|
|
uart_recv (12, 4);
|
510 |
|
|
uart_wait (8);
|
511 |
|
|
logmessage ("UART: Receiving 2 words");
|
512 |
|
|
uart_recv (2, 0);
|
513 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
514 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
515 |
|
|
logmessage ("UART: Sending 40 words");
|
516 |
|
|
uart_send (40);
|
517 |
|
|
uart_wait (4);
|
518 |
|
|
uart_read (LSR, LSR_DR);
|
519 |
|
|
uart_wait (20);
|
520 |
|
|
uart_read (LSR, LSR_DR | LSR_OE | LSR_THRE | LSR_TEMT);
|
521 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
522 |
|
|
logmessage ("UART: Receiving 3 words");
|
523 |
|
|
uart_recv (2, 2);
|
524 |
|
|
uart_rrbr (0x00);
|
525 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
526 |
|
|
logmessage ("UART: Receiving 13 words");
|
527 |
|
|
uart_recv (13, 1);
|
528 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
529 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
530 |
|
|
|
531 |
|
|
logmessage ("UART: Testing FIFO error counter...");
|
532 |
|
|
uart_write (IER, IER_ERBI | IER_ELSI);
|
533 |
|
|
logmessage ("UART: Sending 2 words");
|
534 |
|
|
uart_send (2);
|
535 |
|
|
uart_wait (2);
|
536 |
|
|
logmessage ("UART: Sending break");
|
537 |
|
|
uart_write (LCR, $LCR | LCR_BC);
|
538 |
|
|
uart_wait (1);
|
539 |
|
|
uart_write (LCR, $LCR & ~LCR_BC);
|
540 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
541 |
|
|
logmessage ("UART: Sending 4 words");
|
542 |
|
|
uart_send (4);
|
543 |
|
|
uart_wait (4);
|
544 |
|
|
logmessage ("UART: Sending break");
|
545 |
|
|
uart_write (LCR, $LCR | LCR_BC);
|
546 |
|
|
uart_wait (1);
|
547 |
|
|
uart_write (LCR, $LCR & ~LCR_BC);
|
548 |
|
|
logmessage ("UART: Sending 2 words");
|
549 |
|
|
uart_send (2);
|
550 |
|
|
uart_wait (6);
|
551 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
552 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
553 |
|
|
logmessage ("UART: Reading 2 words");
|
554 |
|
|
uart_rrbr (0x00);
|
555 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
556 |
|
|
uart_rrbr (0x01);
|
557 |
12 |
hasw |
uart_wait (1);
|
558 |
2 |
hasw |
uart_read (IIR, IIR_RLSI | IIR_FE);
|
559 |
|
|
uart_read (LSR, LSR_DR | LSR_FE | LSR_BI | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
560 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
561 |
|
|
logmessage ("UART: Reading break word");
|
562 |
|
|
uart_rrbr (0x00);
|
563 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
564 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
565 |
|
|
logmessage ("UART: Reading 4 words");
|
566 |
|
|
uart_rrbr (0x00);
|
567 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
568 |
|
|
uart_rrbr (0x01);
|
569 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
570 |
|
|
uart_rrbr (0x02);
|
571 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
572 |
|
|
uart_rrbr (0x03);
|
573 |
12 |
hasw |
uart_wait (1);
|
574 |
2 |
hasw |
uart_read (IIR, IIR_RLSI | IIR_FE);
|
575 |
|
|
uart_read (LSR, LSR_DR | LSR_FE | LSR_BI | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
576 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
577 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
578 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
579 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
580 |
|
|
logmessage ("UART: Reading break word");
|
581 |
|
|
uart_rrbr (0x00);
|
582 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
583 |
|
|
uart_rrbr (0x00);
|
584 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
585 |
|
|
uart_rrbr (0x01);
|
586 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
587 |
|
|
|
588 |
|
|
logmessage ("UART: Sending break");
|
589 |
|
|
uart_write (LCR, $LCR | LCR_BC);
|
590 |
|
|
uart_wait (1);
|
591 |
|
|
uart_write (LCR, $LCR & ~LCR_BC);
|
592 |
|
|
uart_read (IIR, IIR_RLSI | IIR_FE);
|
593 |
|
|
uart_read (LSR, LSR_DR | LSR_FE | LSR_BI | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
594 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
595 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
596 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT | LSR_RXFE);
|
597 |
|
|
logmessage ("UART: Reading break word");
|
598 |
|
|
uart_rrbr (0x00);
|
599 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
600 |
|
|
|
601 |
|
|
logmessage ("UART: FIFO test end");
|
602 |
|
|
}
|
603 |
|
|
|
604 |
14 |
hasw |
sub uart_check_fifo64 ()
|
605 |
|
|
{
|
606 |
|
|
logmessage ("UART: Testing FIFO in 64 byte mode...");
|
607 |
|
|
uart_write (IER, IER_ERBI | IER_ETBEI | IER_ELSI | IER_EDSSI);
|
608 |
|
|
uart_write (FCR, FCR_F64E | FCR_FE | FCR_RXFR | FCR_TXFR);
|
609 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE);
|
610 |
|
|
uart_write (LCR, $LCR | LCR_DLAB);
|
611 |
|
|
uart_write (FCR, FCR_F64E | FCR_FE);
|
612 |
|
|
uart_write (LCR, $LCR & ~LCR_DLAB);
|
613 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE | IIR_F64E);
|
614 |
|
|
|
615 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
616 |
|
|
logmessage ("UART: Testing FIFO trigger level 1 byte...");
|
617 |
|
|
uart_write (FCR, FCR_FE | FCR_RT1);
|
618 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE | IIR_F64E);
|
619 |
|
|
uart_send (1);
|
620 |
|
|
uart_wait (4);
|
621 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE | IIR_F64E);
|
622 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
623 |
|
|
uart_rrbr (0x00);
|
624 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE | IIR_F64E);
|
625 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
626 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE | IIR_F64E);
|
627 |
|
|
|
628 |
|
|
logmessage ("UART: Testing FIFO trigger level 16 byte...");
|
629 |
|
|
uart_write (FCR, FCR_FE | FCR_RT16);
|
630 |
|
|
uart_send (15);
|
631 |
|
|
uart_wait (15);
|
632 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE | IIR_F64E);
|
633 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
634 |
|
|
uart_rrbr (0x00);
|
635 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE | IIR_F64E);
|
636 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE | IIR_F64E);
|
637 |
|
|
uart_send (3);
|
638 |
|
|
uart_wait (3);
|
639 |
|
|
uart_read (IIR, IIR_RDAI | IIR_FE | IIR_F64E);
|
640 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
641 |
|
|
uart_rrbr (0x01);
|
642 |
|
|
uart_read (IIR, IIR_RDAI | IIR_FE | IIR_F64E);
|
643 |
|
|
uart_rrbr (0x02);
|
644 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE | IIR_F64E);
|
645 |
|
|
uart_recv (12, 3);
|
646 |
|
|
uart_recv (3);
|
647 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
648 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE | IIR_F64E);
|
649 |
|
|
|
650 |
|
|
logmessage ("UART: Testing FIFO trigger level 32 byte...");
|
651 |
|
|
uart_write (FCR, FCR_FE | FCR_RT32);
|
652 |
|
|
uart_send (31);
|
653 |
|
|
uart_wait (31);
|
654 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE | IIR_F64E);
|
655 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
656 |
|
|
uart_rrbr (0x00);
|
657 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE | IIR_F64E);
|
658 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE | IIR_F64E);
|
659 |
|
|
uart_send (3);
|
660 |
|
|
uart_wait (3);
|
661 |
|
|
uart_read (IIR, IIR_RDAI | IIR_FE | IIR_F64E);
|
662 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
663 |
|
|
uart_rrbr (0x01);
|
664 |
|
|
uart_read (IIR, IIR_RDAI | IIR_FE | IIR_F64E);
|
665 |
|
|
uart_rrbr (0x02);
|
666 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE | IIR_F64E);
|
667 |
|
|
uart_recv (28, 3);
|
668 |
|
|
uart_recv (3);
|
669 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
670 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE | IIR_F64E);
|
671 |
|
|
|
672 |
|
|
logmessage ("UART: Testing FIFO trigger level 56 byte...");
|
673 |
|
|
uart_write (FCR, FCR_FE | FCR_RT56);
|
674 |
|
|
uart_send (55);
|
675 |
|
|
uart_wait (55);
|
676 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE | IIR_F64E);
|
677 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
678 |
|
|
uart_rrbr (0x00);
|
679 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE | IIR_F64E);
|
680 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE | IIR_F64E);
|
681 |
|
|
uart_send (3);
|
682 |
|
|
uart_wait (3);
|
683 |
|
|
uart_read (IIR, IIR_RDAI | IIR_FE | IIR_F64E);
|
684 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
685 |
|
|
uart_rrbr (0x01);
|
686 |
|
|
uart_read (IIR, IIR_RDAI | IIR_FE | IIR_F64E);
|
687 |
|
|
uart_rrbr (0x02);
|
688 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE | IIR_F64E);
|
689 |
|
|
uart_recv (52, 3);
|
690 |
|
|
uart_recv (3);
|
691 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
692 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE | IIR_F64E);
|
693 |
|
|
|
694 |
|
|
uart_write (LCR, $LCR | LCR_DLAB);
|
695 |
|
|
uart_write (FCR, $FCR & ~FCR_F64E);
|
696 |
|
|
uart_write (LCR, $LCR & ~LCR_DLAB);
|
697 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
698 |
|
|
|
699 |
|
|
logmessage ("UART: FIFO64 test end");
|
700 |
|
|
}
|
701 |
|
|
|
702 |
12 |
hasw |
sub uart_check_afc ()
|
703 |
|
|
{
|
704 |
|
|
logmessage ("UART: Automatic flow control test");
|
705 |
|
|
uart_write (LCR, LCR_WLS8);
|
706 |
|
|
uart_read (LCR, LCR_WLS8);
|
707 |
|
|
uart_write (IER, IER_ERBI | IER_ETBEI | IER_ELSI | IER_EDSSI);
|
708 |
|
|
uart_read (IER, IER_ERBI | IER_ETBEI | IER_ELSI | IER_EDSSI);
|
709 |
|
|
logmessage ("UART: Setting FIFO trigger level to 4 bytes");
|
710 |
|
|
uart_write (FCR, FCR_FE | FCR_RT4);
|
711 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE);
|
712 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
713 |
|
|
logmessage ("UART: Enabling Auto-CTS");
|
714 |
|
|
uart_write (MCR, ($MCR & ~(MCR_DTR | MCR_RTS | MCR_OUT1 | MCR_OUT2)) | MCR_AFE);
|
715 |
|
|
uart_read (MSR, 0);
|
716 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
717 |
|
|
logmessage ("UART: Send 3 words");
|
718 |
|
|
uart_send (3);
|
719 |
|
|
uart_wait (6);
|
720 |
|
|
logmessage ("UART: Expecting no data was sent");
|
721 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
722 |
|
|
uart_read (LSR, 0);
|
723 |
|
|
logmessage ("UART: Enabling Auto-RTS");
|
724 |
|
|
uart_write (MCR, $MCR | MCR_RTS);
|
725 |
|
|
logmessage ("UART: Check if CTS is enabled");
|
726 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
727 |
|
|
uart_read (MSR, MSR_DCTS | MSR_CTS);
|
728 |
|
|
uart_wait (8);
|
729 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
730 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
731 |
|
|
logmessage ("UART: Check if CTS is enabled");
|
732 |
|
|
uart_read (MSR, MSR_CTS);
|
733 |
|
|
logmessage ("UART: Send 1 word");
|
734 |
|
|
uart_send (1);
|
735 |
|
|
uart_wait (2);
|
736 |
|
|
logmessage ("UART: Check if CTS is disabled");
|
737 |
|
|
uart_read (MSR, MSR_DCTS);
|
738 |
|
|
logmessage ("UART: Check LSR");
|
739 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
740 |
|
|
uart_read (IIR, IIR_CTOI | IIR_FE);
|
741 |
|
|
logmessage ("UART: Receive 3 words");
|
742 |
|
|
uart_recv (3);
|
743 |
|
|
logmessage ("UART: Check if CTS is disabled");
|
744 |
|
|
uart_read (MSR, 0);
|
745 |
|
|
logmessage ("UART: Receive 1 word");
|
746 |
|
|
uart_recv (1);
|
747 |
|
|
logmessage ("UART: Check LSR");
|
748 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
749 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE);
|
750 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
751 |
|
|
logmessage ("UART: Check if CTS is enabled again");
|
752 |
|
|
uart_read (MSR, MSR_DCTS | MSR_CTS);
|
753 |
|
|
logmessage ("UART: Send 6 words");
|
754 |
|
|
uart_send (5);
|
755 |
|
|
uart_send (1);
|
756 |
|
|
uart_wait (4);
|
757 |
|
|
logmessage ("UART: Check if CTS is disabled");
|
758 |
|
|
uart_read (MSR, MSR_DCTS);
|
759 |
|
|
logmessage ("UART: Check LSR");
|
760 |
|
|
uart_read (LSR, LSR_DR);
|
761 |
|
|
uart_wait (1);
|
762 |
|
|
logmessage ("UART: Receive 5 words");
|
763 |
|
|
uart_recv (5);
|
764 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
765 |
|
|
uart_wait (2);
|
766 |
|
|
logmessage ("UART: Check LSR");
|
767 |
|
|
uart_read (LSR, LSR_DR | LSR_THRE | LSR_TEMT);
|
768 |
|
|
logmessage ("UART: Check if CTS is enabled again");
|
769 |
|
|
uart_read (MSR, MSR_DCTS | MSR_CTS);
|
770 |
|
|
logmessage ("UART: Receive 1 words");
|
771 |
|
|
uart_recv (1);
|
772 |
|
|
logmessage ("UART: Check LSR");
|
773 |
|
|
uart_read (LSR, LSR_THRE | LSR_TEMT);
|
774 |
|
|
uart_read (IIR, IIR_THRI | IIR_FE);
|
775 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
776 |
|
|
logmessage ("UART: Check if CTS is enabled");
|
777 |
|
|
uart_read (MSR, MSR_CTS);
|
778 |
|
|
logmessage ("UART: Disable Automatic flow control");
|
779 |
|
|
uart_write (MCR, $MCR & ~(MCR_DTR | MCR_RTS | MCR_OUT1 | MCR_OUT2 | MCR_AFE));
|
780 |
|
|
uart_read (MSR, MSR_DCTS);
|
781 |
|
|
uart_read (IIR, IIR_NONE | IIR_FE);
|
782 |
|
|
uart_read (MCR, $MCR);
|
783 |
|
|
logmessage ("UART: Automatic flow control test finished");
|
784 |
|
|
}
|
785 |
|
|
|
786 |
14 |
hasw |
if (TEST_CONTROL) {
|
787 |
|
|
uart_check_control_lines ();
|
788 |
|
|
}
|
789 |
|
|
if (TEST_INTERRUPT) {
|
790 |
|
|
uart_check_interrupt_control ();
|
791 |
|
|
}
|
792 |
|
|
if (TEST_DEFAULT) {
|
793 |
|
|
uart_check_default ();
|
794 |
|
|
}
|
795 |
|
|
if (TEST_FIFO) {
|
796 |
|
|
uart_check_fifo ();
|
797 |
|
|
}
|
798 |
|
|
if (TEST_FIFO64) {
|
799 |
|
|
uart_check_fifo64 ();
|
800 |
|
|
}
|
801 |
12 |
hasw |
if (TEST_AFC) {
|
802 |
|
|
uart_check_afc ();
|
803 |
|
|
}
|
804 |
2 |
hasw |
|
805 |
|
|
##################################################################
|
806 |
|
|
# End main process
|
807 |
|
|
##################################################################
|
808 |
|
|
|
809 |
|
|
|
810 |
|
|
|
811 |
|
|
##################################################################
|
812 |
|
|
# Sub functions
|
813 |
|
|
##################################################################
|
814 |
|
|
|
815 |
|
|
# Convert number to binary string
|
816 |
|
|
sub num2binary($$)
|
817 |
|
|
{
|
818 |
|
|
my($num) = @_;
|
819 |
|
|
my $binary = $num ? '' : '0'; # in case $num is zero
|
820 |
|
|
my $len = $_[1];
|
821 |
|
|
my $result;
|
822 |
|
|
|
823 |
|
|
while ($num) {
|
824 |
|
|
$binary .= $num & 1 ? 1 : 0; # do the LSB
|
825 |
|
|
$num >>= 1; # on to the next bit
|
826 |
|
|
}
|
827 |
|
|
|
828 |
|
|
$result = scalar reverse $binary;
|
829 |
|
|
while (length($result)<$len) {
|
830 |
|
|
$result = "0".$result;
|
831 |
|
|
}
|
832 |
|
|
|
833 |
|
|
return $result;
|
834 |
|
|
}
|
835 |
|
|
|
836 |
|
|
|
837 |
|
|
# Insert wait cycles
|
838 |
|
|
sub waitcycle($)
|
839 |
|
|
{
|
840 |
|
|
printf ("#WAIT %d\n", $_[0]);
|
841 |
|
|
#printf ("DE %d\n", $_[0]+5);
|
842 |
|
|
}
|
843 |
|
|
|
844 |
|
|
# Log message
|
845 |
|
|
sub logmessage($)
|
846 |
|
|
{
|
847 |
|
|
print "#LOG $_[0]\n";
|
848 |
|
|
#print "LO $_[0]\n";
|
849 |
|
|
}
|
850 |
|
|
|
851 |
|
|
# Read from UART
|
852 |
|
|
sub uart_read($$)
|
853 |
|
|
{
|
854 |
|
|
printf ("#RD %s %s\n", num2binary ($_[0] & 7, 3), num2binary ($_[1] & 0xFF, 8));
|
855 |
|
|
#printf ("IR 0x%04X 0x%02X\n", UART_ADDRESS + ($_[0] & 7), $_[1] & 0xFF);
|
856 |
|
|
}
|
857 |
|
|
|
858 |
|
|
# Filter read from RBR (mask word length)
|
859 |
|
|
sub uart_rrbr($)
|
860 |
|
|
{
|
861 |
|
|
my $wls = $LCR & 0x03;
|
862 |
|
|
my $data = $_[0];
|
863 |
|
|
|
864 |
|
|
if ($wls == 0x00) { $data &= 0x1F; }
|
865 |
|
|
if ($wls == 0x01) { $data &= 0x3F; }
|
866 |
|
|
if ($wls == 0x02) { $data &= 0x7F; }
|
867 |
|
|
uart_read (RBR, $data);
|
868 |
|
|
}
|
869 |
|
|
|
870 |
|
|
# Write to UART
|
871 |
|
|
sub uart_write($$)
|
872 |
|
|
{
|
873 |
|
|
# Shadow register writes to local copy
|
874 |
|
|
SWITCH: {
|
875 |
|
|
if ($_[0] == THR) { $RBR = $_[1]; last SWITCH; }
|
876 |
|
|
if ($_[0] == IER) { $IER = $_[1]; last SWITCH; }
|
877 |
|
|
if ($_[0] == FCR) { $FCR = $_[1]; last SWITCH; }
|
878 |
|
|
if ($_[0] == LCR) { $LCR = $_[1]; last SWITCH; }
|
879 |
|
|
if ($_[0] == MCR) { $MCR = $_[1]; last SWITCH; }
|
880 |
|
|
if ($_[0] == SCR) { $SCR = $_[1]; last SWITCH; }
|
881 |
|
|
}
|
882 |
|
|
|
883 |
|
|
printf ("#WR %s %s\n", num2binary ($_[0] & 7, 3), num2binary ($_[1] & 0xFF, 8));
|
884 |
|
|
#printf ("IW 0x%04X 0x%02X\n", UART_ADDRESS + ($_[0] & 7), $_[1] & 0xFF);
|
885 |
|
|
}
|
886 |
|
|
|
887 |
|
|
# Set UART baudrate
|
888 |
|
|
sub uart_setbaudrate($)
|
889 |
|
|
{
|
890 |
|
|
logmessage ("UART: Setting baudrate to $_[0]");
|
891 |
|
|
$divisor = BAUDGENCLK / (16 * $_[0]);
|
892 |
|
|
uart_write (LCR, $LCR | LCR_DLAB);
|
893 |
|
|
uart_write (DLL, $divisor);
|
894 |
|
|
uart_write (DLM, $divisor >> 8);
|
895 |
|
|
uart_read (LCR, $LCR);
|
896 |
|
|
uart_read (DLL, $divisor);
|
897 |
|
|
uart_read (DLM, $divisor >> 8);
|
898 |
|
|
uart_write (LCR, $LCR & ~LCR_DLAB);
|
899 |
|
|
uart_read (LCR, $LCR);
|
900 |
|
|
}
|
901 |
|
|
|
902 |
|
|
# Wait until n words are transmitted/received
|
903 |
|
|
sub uart_wait ($)
|
904 |
|
|
{
|
905 |
|
|
my $steps = 1; # Start bit
|
906 |
|
|
$steps += 5 + ($LCR & 0x03); # Data
|
907 |
|
|
$steps += $LCR & LCR_PEN ? 1 : 0; # Parity
|
908 |
|
|
$steps += $LCR & LCR_STB ? 2 : 1; # Stop bit
|
909 |
|
|
$steps += 2; # Extra delay
|
910 |
|
|
|
911 |
|
|
my $txtime = $_[0]*$steps*($divisor*16)/BAUDGENCLK;
|
912 |
|
|
waitcycle ($txtime/CYCLE);
|
913 |
|
|
}
|
914 |
|
|
|
915 |
|
|
# Send n bytes
|
916 |
|
|
sub uart_send ($)
|
917 |
|
|
{
|
918 |
|
|
for (my $i = 0; $i < $_[0]; $i++) {
|
919 |
|
|
uart_write (THR, $i);
|
920 |
|
|
if (!($FCR & FCR_FE)) {
|
921 |
|
|
uart_wait (1);
|
922 |
|
|
}
|
923 |
|
|
}
|
924 |
|
|
}
|
925 |
|
|
|
926 |
|
|
# Receive n bytes
|
927 |
|
|
sub uart_recv ($$)
|
928 |
|
|
{
|
929 |
|
|
for (my $i = 0; $i < $_[0]; $i++) {
|
930 |
|
|
uart_rrbr ($i + $_[1]);
|
931 |
|
|
}
|
932 |
|
|
}
|
933 |
|
|
|
934 |
25 |
hasw |
# Send serial data from external UART
|
935 |
|
|
sub uart_eu_send($)
|
936 |
|
|
{
|
937 |
|
|
printf ("#EUS 8 %d\n", $_[0]);
|
938 |
|
|
}
|
939 |
|
|
|