-package com.atmel.fpslic;
-import com.ftdi.usb.*;
-import java.io.*;
-
-/**
- * Exposes the FpslicRaw interface of an FPSLIC wired to an FTDI USB-UART.
- */
-public class FpslicRawUsb implements FpslicRaw {
-
- private FpslicPins pins;
-
- public FpslicRawUsb(FtdiUart ftdiuart) throws IOException {
- this.pins = new FpslicPinsUsb(ftdiuart);
- reset();
- }
-
- public void reset() throws IOException {
-
- pins.avrrstPin(false);
- pins.configDataPin(false);
- pins.resetPin(false);
- pins.cclkPin(false);
-
- pins.conPin(false);
- pins.flush();
-
- pins.resetPin(false);
- try { Thread.sleep(500); } catch (Exception e) { }
- if (pins.initPin()) throw new RuntimeException("INIT was still high after pulling RESET low");
-
- pins.resetPin(true);
- try { Thread.sleep(500); } catch (Exception e) { }
- if (!pins.initPin()) throw new RuntimeException("INIT was still low after releasing RESET");
-
- sendConfigBits(0,2);
- pins.flush();
- }
-
- public OutputStream getConfigStream() throws IOException {
- reset();
- return new OutputStream() {
- int bytes = 0;
- int bits = 0;
- public void write(int in) throws IOException {
- for(int i=7; i>=0; i--) {
- bits++;
- sendConfigBits((((in & 0xff) & (1<<i))!=0)?1:0, 1);
- }
- }
- public void write(byte[] b, int off, int len) throws IOException {
- for(int i=off; i<off+len; i++)
- write(b[i]);
- }
- public void flush() throws IOException {
- pins.flush();
- }
- public void close() throws IOException {
-
- pins.flush();
-
- // turn off the CON pin we've been pulling low...
- pins.releaseConPin();
-
- if (!pins.initPin())
- throw new RuntimeException("initialization failed at " + bytes);
- for(int i=0; i<100; i++) {
- pins.flush();
- if (!pins.initPin())
- throw new RuntimeException("initialization failed at " + bytes);
- try { Thread.sleep(20); } catch (Exception e) { }
- sendConfigBits(0,1);
- }
-
- pins.close();
- }
- };
- }
-
- public OutputStream getOutputStream() throws IOException { return pins.getUartOutputStream(); }
- public InputStream getInputStream() throws IOException { return pins.getUartInputStream(); }
-
- public void selfTest() throws Exception {
- boolean pin;
- System.out.print("smoke check: ");
-
- // correct preamble
- getConfigStream();
- sendConfigBits(Integer.parseInt("00000000", 2), 8);
- sendConfigBits(Integer.parseInt("10110111", 2), 8);
- sendConfigBits(0,1);
- pins.flush();
- try { Thread.sleep(100); } catch (Exception e) { }
- pin = pins.initPin();
- System.out.print((pin ? green(" [pass]") : red(" [FAIL]")));
-
- // preamble shifted one bit earlier than it should be
- getConfigStream();
- sendConfigBits(Integer.parseInt("0000000", 2), 7);
- sendConfigBits(Integer.parseInt("10110111", 2), 8);
- sendConfigBits(0, 2);
- pins.flush();
- try { Thread.sleep(100); } catch (Exception e) { }
- pin = pins.initPin();
- System.out.print((pin ? red(" [FAIL]") : green(" [pass]")));
-
- // preamble shifted one bit later than it should be
- getConfigStream();
- sendConfigBits(Integer.parseInt("000000000", 2), 9);
- sendConfigBits(Integer.parseInt("10110111", 2), 8);
- //sendConfigBits(0, 1);
- pins.flush();
- try { Thread.sleep(100); } catch (Exception e) { }
- pin = pins.initPin();
- System.out.print((pin ? red(" [FAIL]") : green(" [pass]")));
-
- // plain 'ol bogus preamble
- getConfigStream();
- sendConfigBits(Integer.parseInt("00000000", 2), 8);
- sendConfigBits(Integer.parseInt("11110111", 2), 8);
- sendConfigBits(0, 1);
- pins.flush();
- try { Thread.sleep(100); } catch (Exception e) { }
- pin = pins.initPin();
- System.out.print((pin ? red(" [FAIL]") : green(" [pass]")));
-
- System.out.println();
- }
-
- // Private //////////////////////////////////////////////////////////////////////////////
-
- private void sendConfigBits(int dat, int numbits) throws IOException {
- for(int i=(numbits-1); i>=0; i--) {
- boolean bit = (dat & (1<<i)) != 0;
- pins.configDataPin(bit);
- pins.cclkPin(true);
- pins.cclkPin(false);
- //dbits &= ~(1<<6); // let the clock fall with the next data bit, whenever it goes out
- }
- }
-
- private static String red(Object o) { return "\033[31m"+o+"\033[0m"; }
- private static String green(Object o) { return "\033[32m"+o+"\033[0m"; }
-}