NP-41 Emulator (may be)

[Chris Chung]

(04-20-2016 12:02 PM)Sylvain Cote Wrote:  OK, libusb is absolutely needed, after libusb was installed, everything started to work

Code:

c:\HPCalc\NP41>mspdebug rf2500 "prog np41.hex"
MSPDebug version 0.23 - debugging tool for MSP430 MCUs
Copyright (C) 2009-2015 Daniel Beer <dlbeer@gmail.com>
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Chip info database from MSP430.dll v3.3.1.4 Copyright (C) 2013 TI, Inc.

Trying to open interface 1 on \\.\libusb0-0001--0x0451-0xf432
Initializing FET...
FET protocol version is 30394216
Set Vcc: 3000 mV
Configured for Spy-Bi-Wire
Device ID: 0x2955
fet: unknown device
msg28_data: [0x1a bytes]
    29 55 00 a0 00 00 00 00 00 00 02 02 01 00 2a f7
    00 00 89 00 00 00 00 00 00 00
Using Olimex identification procedure
Device ID: 0x2955
  Code start address: 0x2100
  Code size         : 57088 byte = 55 kb
  RAM  start address: 0x1100
  RAM  end   address: 0x20ff
  RAM  size         : 4096 byte = 4 kb
Device: MSP430G2955
Number of breakpoints: 2
fet: FET returned NAK
warning: device does not support power profiling
Chip ID data: 29 55
Erasing...
Programming...
Writing 4096 bytes at 4400...
Writing 4096 bytes at 5400...
Writing 4096 bytes at 6400...
Writing 4096 bytes at 7400...
Writing 4096 bytes at 8400...
Writing 4096 bytes at 9400...
Writing 4096 bytes at a400...
Writing  356 bytes at b400...
Writing  320 bytes at fc00...
Writing    2 bytes at ffca...
Writing    2 bytes at ffda...
Writing    2 bytes at ffe8...
Writing    2 bytes at ffee...
Writing    2 bytes at fffe...
Writing    2 bytes at fdfe...
Done, 29360 bytes total

If I understand correctly, the Launchpad is now able to reprogram the flash either directly or through the microcontroller.

But the unit is still not working, at least from the user perspective (LCD dead, no sound feedback)

I need to leave for work, I will do more testing tonight.

Best regards,

Sylvain

Hi Sylvain,

It appears that the SBW programming via the Launchpad is successful. The fact that the LCD did not show up should be caused by H/W failures. My other unit had the same fade after I added the serial flash, SD card holder and other addons. This version of PCB was not well thought and the sharing of a number of SPI bus lines may have caused the firmware to held up / SPI failing.

Don't worry about it now. When the new board comes, I will be able to create a unit to swap w/ you for further testing. The new PCB had the serial flash and SD card eliminated and should be more reliable. Anyway my serial flash experiment did not work and I do not plan to pursue it at this moment.

It appears that the NP41 unit (14 segment) is more reliable and the fact it is more simple (less parts, capacitors, etc). Only problem is it's harder to solder.