2 * Copyright © 2010 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
19 package org.altusmetrum.altoslib_11;
23 public class AltosDebug {
25 public static final byte WR_CONFIG = 0x1d;
26 public static final byte RD_CONFIG = 0x24;
27 public static final byte CONFIG_TIMERS_OFF = (1 << 3);
28 public static final byte CONFIG_DMA_PAUSE = (1 << 2);
29 public static final byte CONFIG_TIMER_SUSPEND = (1 << 1);
30 public static final byte SET_FLASH_INFO_PAGE = (1 << 0);
32 public static final byte GET_PC = 0x28;
33 public static final byte READ_STATUS = 0x34;
34 public static final byte STATUS_CHIP_ERASE_DONE = (byte) (1 << 7);
35 public static final byte STATUS_PCON_IDLE = (1 << 6);
36 public static final byte STATUS_CPU_HALTED = (1 << 5);
37 public static final byte STATUS_POWER_MODE_0 = (1 << 4);
38 public static final byte STATUS_HALT_STATUS = (1 << 3);
39 public static final byte STATUS_DEBUG_LOCKED = (1 << 2);
40 public static final byte STATUS_OSCILLATOR_STABLE = (1 << 1);
41 public static final byte STATUS_STACK_OVERFLOW = (1 << 0);
43 public static final byte SET_HW_BRKPNT = 0x3b;
44 public static byte HW_BRKPNT_N(byte n) { return (byte) ((n) << 3); }
45 public static final byte HW_BRKPNT_N_MASK = (0x3 << 3);
46 public static final byte HW_BRKPNT_ENABLE = (1 << 2);
48 public static final byte HALT = 0x44;
49 public static final byte RESUME = 0x4c;
50 public static byte DEBUG_INSTR(byte n) { return (byte) (0x54|(n)); }
51 public static final byte STEP_INSTR = 0x5c;
52 public static byte STEP_REPLACE(byte n) { return (byte) (0x64|(n)); }
53 public static final byte GET_CHIP_ID = 0x68;
56 private AltosLink link;
60 void ensure_debug_mode() throws InterruptedException {
68 void dump_memory(String header, int address, byte[] bytes, int start, int len) {
69 System.out.printf("%s\n", header);
70 for (int j = 0; j < len; j++) {
73 System.out.printf("\n");
74 System.out.printf ("%04x:", address + j);
76 System.out.printf(" %02x", bytes[start + j]);
78 System.out.printf("\n");
84 } catch (InterruptedException ie) {
91 public void write_memory(int address, byte[] bytes, int start, int len) throws InterruptedException {
93 // dump_memory("write_memory", address, bytes, start, len);
94 link.printf("O %x %x\n", len, address);
95 for (int i = 0; i < len; i++)
96 link.printf("%02x", bytes[start + i]);
99 public void write_memory(int address, byte[] bytes) throws InterruptedException {
100 write_memory(address, bytes, 0, bytes.length);
106 public byte[] read_memory(int address, int length)
107 throws IOException, InterruptedException {
108 byte[] data = new byte[length];
112 link.printf("I %x %x\n", length, address);
116 String line = link.get_reply();
118 throw new IOException("No reply");
121 if (!AltosLib.ishex(line) || line.length() % 2 != 0)
122 throw new IOException(
124 ("Invalid reply \"%s\"", line));
125 int this_time = line.length() / 2;
126 for (int j = 0; j < this_time; j++)
127 data[start + j] = (byte) ((AltosLib.fromhex(line.charAt(j*2)) << 4) +
128 AltosLib.fromhex(line.charAt(j*2+1)));
132 // dump_memory("read_memory", address, data, 0, length);
138 * Write raw bytes to the debug link using the 'P' command
140 public void write_bytes(byte[] bytes) throws IOException, InterruptedException {
143 while (i < bytes.length) {
144 int this_time = bytes.length - i;
148 for (int j = 0; j < this_time; j++)
149 link.printf(" %02x", bytes[i+j]);
155 public void write_byte(byte b) throws IOException, InterruptedException {
156 byte[] bytes = { b };
161 * Read raw bytes from the debug link using the 'G' command
163 public byte[] read_bytes(int length)
164 throws IOException, InterruptedException {
168 link.printf("G %x\n", length);
170 byte[] data = new byte[length];
172 String line = link.get_reply();
175 throw new IOException("Timeout in read_bytes");
177 String tokens[] = line.split("\\s+");
178 for (int j = 0; j < tokens.length; j++) {
179 if (!AltosLib.ishex(tokens[j]) ||
180 tokens[j].length() != 2)
181 throw new IOException(
183 ("Invalid read_bytes reply \"%s\"", line));
186 throw new IOException(
188 ("Invalid read_bytes reply \"%s\"", line));
190 data[i + j] = (byte) Integer.parseInt(tokens[j], 16);
191 } catch (NumberFormatException ne) {
192 throw new IOException(
194 ("Invalid read_bytes reply \"%s\"", line));
202 public byte read_byte() throws IOException, InterruptedException {
203 return read_bytes(1)[0];
206 public byte debug_instr(byte[] instruction) throws IOException, InterruptedException {
207 byte[] command = new byte[1 + instruction.length];
208 command[0] = DEBUG_INSTR((byte) instruction.length);
209 for (int i = 0; i < instruction.length; i++)
210 command[i+1] = instruction[i];
211 write_bytes(command);
215 public byte resume() throws IOException, InterruptedException {
220 public int read_uint16() throws IOException, InterruptedException {
221 byte[] d = read_bytes(2);
222 return ((int) (d[0] & 0xff) << 8) | (d[1] & 0xff);
225 public int read_uint8() throws IOException, InterruptedException {
226 byte[] d = read_bytes(1);
227 return (int) (d[0] & 0xff);
230 public int get_chip_id() throws IOException, InterruptedException {
231 write_byte(GET_CHIP_ID);
232 return read_uint16();
235 public int get_pc() throws IOException, InterruptedException {
237 return read_uint16();
240 public byte read_status() throws IOException, InterruptedException {
241 write_byte(READ_STATUS);
245 static final byte LJMP = 0x02;
247 public void set_pc(int pc) throws IOException, InterruptedException {
248 byte high = (byte) (pc >> 8);
249 byte low = (byte) pc;
250 byte[] jump_mem = { LJMP, high, low };
251 debug_instr(jump_mem);
254 public boolean check_connection() throws IOException, InterruptedException {
255 byte reply = read_status();
256 if ((reply & STATUS_CHIP_ERASE_DONE) == 0)
258 if ((reply & STATUS_PCON_IDLE) != 0)
260 if ((reply & STATUS_POWER_MODE_0) == 0)
265 public AltosRomconfig romconfig() throws InterruptedException {
267 byte[] bytes = read_memory(0xa0, 10);
268 AltosHexfile hexfile = new AltosHexfile (bytes, 0xa0);
269 return new AltosRomconfig(hexfile);
270 } catch (IOException ie) {
272 return new AltosRomconfig();
278 public void reset() {
282 public AltosDebug (AltosLink link) {