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; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
22 import java.util.concurrent.*;
27 public class AltosDebug extends AltosSerial {
29 public static final byte WR_CONFIG = 0x1d;
30 public static final byte RD_CONFIG = 0x24;
31 public static final byte CONFIG_TIMERS_OFF = (1 << 3);
32 public static final byte CONFIG_DMA_PAUSE = (1 << 2);
33 public static final byte CONFIG_TIMER_SUSPEND = (1 << 1);
34 public static final byte SET_FLASH_INFO_PAGE = (1 << 0);
36 public static final byte GET_PC = 0x28;
37 public static final byte READ_STATUS = 0x34;
38 public static final byte STATUS_CHIP_ERASE_DONE = (byte) (1 << 7);
39 public static final byte STATUS_PCON_IDLE = (1 << 6);
40 public static final byte STATUS_CPU_HALTED = (1 << 5);
41 public static final byte STATUS_POWER_MODE_0 = (1 << 4);
42 public static final byte STATUS_HALT_STATUS = (1 << 3);
43 public static final byte STATUS_DEBUG_LOCKED = (1 << 2);
44 public static final byte STATUS_OSCILLATOR_STABLE = (1 << 1);
45 public static final byte STATUS_STACK_OVERFLOW = (1 << 0);
47 public static final byte SET_HW_BRKPNT = 0x3b;
48 public static byte HW_BRKPNT_N(byte n) { return (byte) ((n) << 3); }
49 public static final byte HW_BRKPNT_N_MASK = (0x3 << 3);
50 public static final byte HW_BRKPNT_ENABLE = (1 << 2);
52 public static final byte HALT = 0x44;
53 public static final byte RESUME = 0x4c;
54 public static byte DEBUG_INSTR(byte n) { return (byte) (0x54|(n)); }
55 public static final byte STEP_INSTR = 0x5c;
56 public static byte STEP_REPLACE(byte n) { return (byte) (0x64|(n)); }
57 public static final byte GET_CHIP_ID = 0x68;
62 void ensure_debug_mode() {
67 } catch (InterruptedException ie) {
73 void dump_memory(String header, int address, byte[] bytes, int start, int len) {
74 System.out.printf("%s\n", header);
75 for (int j = 0; j < len; j++) {
78 System.out.printf("\n");
79 System.out.printf ("%04x:", address + j);
81 System.out.printf(" %02x", bytes[start + j]);
83 System.out.printf("\n");
89 public void write_memory(int address, byte[] bytes, int start, int len) {
91 // dump_memory("write_memory", address, bytes, start, len);
92 printf("O %x %x\n", len, address);
93 for (int i = 0; i < len; i++)
94 printf("%02x", bytes[start + i]);
97 public void write_memory(int address, byte[] bytes) {
98 write_memory(address, bytes, 0, bytes.length);
104 public byte[] read_memory(int address, int length)
105 throws IOException, InterruptedException {
106 byte[] data = new byte[length];
110 printf("I %x %x\n", length, address);
114 String line = get_reply().trim();
115 if (!Altos.ishex(line) || line.length() % 2 != 0)
116 throw new IOException(
118 ("Invalid reply \"%s\"", line));
119 int this_time = line.length() / 2;
120 for (int j = 0; j < this_time; j++)
121 data[start + j] = (byte) ((Altos.fromhex(line.charAt(j*2)) << 4) +
122 Altos.fromhex(line.charAt(j*2+1)));
126 // dump_memory("read_memory", address, data, 0, length);
132 * Write raw bytes to the debug link using the 'P' command
134 public void write_bytes(byte[] bytes) throws IOException {
137 while (i < bytes.length) {
138 int this_time = bytes.length - i;
142 for (int j = 0; j < this_time; j++)
143 printf(" %02x", bytes[i+j]);
149 public void write_byte(byte b) throws IOException {
150 byte[] bytes = { b };
155 * Read raw bytes from the debug link using the 'G' command
157 public byte[] read_bytes(int length)
158 throws IOException, InterruptedException {
162 printf("G %x\n", length);
164 byte[] data = new byte[length];
166 String line = get_reply();
169 throw new IOException("Timeout in read_bytes");
171 String tokens[] = line.split("\\s+");
172 for (int j = 0; j < tokens.length; j++) {
173 if (!Altos.ishex(tokens[j]) ||
174 tokens[j].length() != 2)
175 throw new IOException(
177 ("Invalid read_bytes reply \"%s\"", line));
180 throw new IOException(
182 ("Invalid read_bytes reply \"%s\"", line));
184 data[i + j] = (byte) Integer.parseInt(tokens[j], 16);
185 } catch (NumberFormatException ne) {
186 throw new IOException(
188 ("Invalid read_bytes reply \"%s\"", line));
196 public byte read_byte() throws IOException, InterruptedException {
197 return read_bytes(1)[0];
200 public byte debug_instr(byte[] instruction) throws IOException, InterruptedException {
201 byte[] command = new byte[1 + instruction.length];
202 command[0] = DEBUG_INSTR((byte) instruction.length);
203 for (int i = 0; i < instruction.length; i++)
204 command[i+1] = instruction[i];
205 write_bytes(command);
209 public byte resume() throws IOException, InterruptedException {
214 public int read_uint16() throws IOException, InterruptedException {
215 byte[] d = read_bytes(2);
216 return ((int) (d[0] & 0xff) << 8) | (d[1] & 0xff);
219 public int read_uint8() throws IOException, InterruptedException {
220 byte[] d = read_bytes(1);
221 return (int) (d[0] & 0xff);
224 public int get_chip_id() throws IOException, InterruptedException {
225 write_byte(GET_CHIP_ID);
226 return read_uint16();
229 public int get_pc() throws IOException, InterruptedException {
231 return read_uint16();
234 public byte read_status() throws IOException, InterruptedException {
235 write_byte(READ_STATUS);
239 static final byte LJMP = 0x02;
241 public void set_pc(int pc) throws IOException, InterruptedException {
242 byte high = (byte) (pc >> 8);
243 byte low = (byte) pc;
244 byte[] jump_mem = { LJMP, high, low };
245 debug_instr(jump_mem);
248 public boolean check_connection() throws IOException, InterruptedException {
249 byte reply = read_status();
250 if ((reply & STATUS_CHIP_ERASE_DONE) == 0)
252 if ((reply & STATUS_PCON_IDLE) != 0)
254 if ((reply & STATUS_POWER_MODE_0) == 0)
259 public AltosRomconfig romconfig() {
261 byte[] bytes = read_memory(0xa0, 10);
262 return new AltosRomconfig(bytes, 0);
263 } catch (IOException ie) {
264 } catch (InterruptedException ie) {
266 return new AltosRomconfig();
272 public void reset() {
276 public AltosDebug (AltosDevice in_device) throws FileNotFoundException, AltosSerialInUseException {