1 files changed, 146 insertions, 0 deletions
diff --git a/source/notes/pic-mcu/pickit2/pk2cmd-stuff/pk2cmd_script.py b/source/notes/pic-mcu/pickit2/pk2cmd-stuff/pk2cmd_script.py
new file mode 100644
index 0000000..f1de6ce
--- /dev/null
+++ b/source/notes/pic-mcu/pickit2/pk2cmd-stuff/pk2cmd_script.py
@@ -0,0 +1,146 @@
+import pic24
+
+NoOperands = [
+    0xD5, 0xD6, 0xD7, 0xD8,
+    0xEF, # comment on this one: Read & toss 2 response words
+    0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB
+]
+
+ScriptCommandTable = {
+    0xB4: 'SCMD_JT2_WAIT_PE_RESP',
+    0xB5: 'SCMD_JT2_GET_PE_RESP',
+    0xB6: 'SCMD_JT2_XFERINST_BUF',
+    0xB7: 'SCMD_JT2_XFRFASTDAT_BUF',
+    0xB8: 'SCMD_JT2_XFRFASTDAT_LIT',
+    0xB9: 'SCMD_JT2_XFERDATA32_LIT',
+    0xBA: 'SCMD_JT2_XFERDATA8_LIT',
+    0xBB: 'SCMD_JT2_SENDCMD',
+    0xBC: 'SCMD_JT2_SETMODE',
+    0xBD: 'SCMD_UNIO_TX_RX',
+    0xBE: 'SCMD_UNIO_TX',
+    0xBF: 'SCMD_MEASURE_PULSE',
+    0xC0: 'SCMD_ICDSLAVE_TX_BUF_BL',
+    0xC1: 'SCMD_ICDSLAVE_TX_LIT_BL',
+    0xC2: 'SCMD_ICDSLAVE_RX_BL',
+    0xC3: 'SCMD_SPI_RDWR_BYTE_BUF',
+    0xC4: 'SCMD_SPI_RDWR_BYTE_LIT',
+    0xC5: 'SCMD_SPI_RD_BYTE_BUF',
+    0xC6: 'SCMD_SPI_WR_BYTE_BUF',
+    0xC7: 'SCMD_SPI_WR_BYTE_LIT',
+    0xC8: 'SCMD_I2C_RD_BYTE_NACK',
+    0xC9: 'SCMD_I2C_RD_BYTE_ACK',
+    0xCA: 'SCMD_I2C_WR_BYTE_BUF',
+    0xCB: 'SCMD_I2C_WR_BYTE_LIT',
+    0xCC: 'SCMD_I2C_STOP',
+    0xCD: 'SCMD_I2C_START',
+    0xCE: 'SCMD_AUX_STATE_BUFFER',
+    0xCF: 'SCMD_SET_AUX',
+    0xD0: 'SCMD_WRITE_BITS_BUF_HLD',
+    0xD1: 'SCMD_WRITE_BITS_LIT_HLD',
+    0xD2: 'SCMD_CONST_WRITE_DL',
+    0xD3: 'SCMD_WRITE_BUFBYTE_W',
+    0xD4: 'SCMD_WRITE_BUFWORD_W',
+    0xD5: 'SCMD_RD2_BITS_BUFFER',
+    0xD6: 'SCMD_RD2_BYTE_BUFFER',
+    0xD7: 'SCMD_VISI24',
+    0xD8: 'SCMD_NOP24',
+    0xD9: 'SCMD_COREINST24',
+    0xDA: 'SCMD_COREINST18',
+    0xDB: 'SCMD_POP_DOWNLOAD',
+    0xDC: 'SCMD_ICSP_STATES_BUFFER',
+    0xDD: 'SCMD_LOOP_BUFFER',
+    0xDE: 'SCMD_ICDSLAVE_TX_BUF',
+    0xDF: 'SCMD_ICDSLAVE_TX_LIT',
+    0xE0: 'SCMD_ICDSLAVE_RX',
+    0xE1: 'SCMD_POKE_SFR',
+    0xE2: 'SCMD_PEEK_SFR',
+    0xE3: 'SCMD_EXIT_SCRIPT',
+    0xE4: 'SCMD_GOTO_INDEX',
+    0xE5: 'SCMD_IF_GT_GOTO',
+    0xE6: 'SCMD_IF_EQ_GOTO',
+    0xE7: 'SCMD_DELAY_SHORT',
+    0xE8: 'SCMD_DELAY_LONG',
+    0xE9: 'SCMD_LOOP',
+    0xEA: 'SCMD_SET_ICSP_SPEED',
+    0xEB: 'SCMD_READ_BITS',
+    0xEC: 'SCMD_READ_BITS_BUFFER',
+    0xED: 'SCMD_WRITE_BITS_BUFFER',
+    0xEE: 'SCMD_WRITE_BITS_LITERAL',
+    0xEF: 'SCMD_READ_BYTE',
+    0xF0: 'SCMD_READ_BYTE_BUFFER',
+    0xF1: 'SCMD_WRITE_BYTE_BUFFER',
+    0xF2: 'SCMD_WRITE_BYTE_LITERAL',
+    0xF3: 'SCMD_SET_ICSP_PINS',
+    0xF4: 'SCMD_BUSY_LED_OFF',
+    0xF5: 'SCMD_BUSY_LED_ON',
+    0xF6: 'SCMD_MCLR_GND_OFF',
+    0xF7: 'SCMD_MCLR_GND_ON',
+    0xF8: 'SCMD_VPP_PWM_OFF',
+    0xF9: 'SCMD_VPP_PWM_ON',
+    0xFA: 'SCMD_VPP_OFF',
+    0xFB: 'SCMD_VPP_ON',
+    0xFC: 'SCMD_VDD_GND_OFF',
+    0xFD: 'SCMD_VDD_GND_ON',
+    0xFE: 'SCMD_VDD_OFF',
+    0xFF: 'SCMD_VDD_ON'
+}
+
+def disassemble(blob, offset):
+    code = blob[offset]
+    length = 1
+    command = ScriptCommandTable[code]
+    result = {}
+    result['mnemonic'] = command
+    if code == 0xCF:
+        length += 1
+        result['op'] = hex(blob[offset + 1])
+    elif code == 0xD3 or code == 0xD4:
+        length += 1
+        immediate = blob[offset + 1]
+    elif code == 0xD9:
+        if blob[offset + 1 + 2] == 0x04:
+            # it's a goto, and there's a second instruction. this OUGHT to be
+            # followed by a SCMD_NOP24...
+            if blob[offset + 1 + 3] == 0xD8:
+                # it is! whew
+                instrbytes = blob[offset + 1:offset + 1 + 3]
+                instrbytes.append(0)
+                instrbytes.append(0)
+                instrbytes.append(0)
+
+                (postinstr_offset, instr) = pic24.disassemble(instrbytes, 0)
+                length = 1 + 3 + 1 # the command, three real bytes + the nop
+                result['op'] = instr #pic24.render(instr)
+            else:
+                (postinstr_offset, instr) = pic24.disassemble(blob, offset + 1)
+#                length = postinstr_offset - offset
+                length = 4
+                result['op'] = instr #pic24.render(instr)
+                print("Goto not followed by nop, uhh what's " + hex(blob[offset + 3 + 1]))
+        else:
+            (postinstr_offset, instr) = pic24.disassemble(blob, offset + 1)
+            length = postinstr_offset - offset
+            result['op'] = instr #pic24.render(instr)
+    elif code in NoOperands:
+        pass
+    elif code == 0xE7 or code == 0xE8:
+        length += 1
+        result['op'] = hex(blob[offset + 1])
+    elif code == 0xEE:
+        length += 2
+# not sure if this is really two operands
+        result['op'] = hex(blob[offset + 1]) + ", " + hex(blob[offset + 2])
+    elif code == 0xE9:
+        length += 2
+        result['op'] = hex((blob[offset + 2] << 8) + blob[offset + 1])
+    elif code == 0xF2:
+        length += 1
+        result['op'] = hex(blob[offset + 1])
+    elif code == 0xF3:
+        length += 1
+        result['op'] = hex(blob[offset + 1])
+    else:
+        print("Unknown: " + command)
+        return None
+
+    return (offset + length, result)