Alternative flashing methods

Via Arduino/ESP8266

Flashing firmware via Arduino is implemented using the project https://github.com/wavesoft/CCLib But with minor improvements!!!

AndrewLinden described that he was able to flash CC2531 using CCLib with comments.

As described I made a fork of the CCLib library with minor changes for flashing firmware via Arduino:

Timeouts of operations
After opening the port (I have in Windows 7) Arduino reboots and, accordingly, does not respond to requests - made a 3 seconds pause (found somewhere in internet).
The port speed is reduced to 9600, because at another speed leaving communication errors: ERROR: Could not read from the serial port!

Flashing proccess:

Download and unpack the archive with the library https://github.com/kirovilya/CCLib.
Flashing Arduino sketch via Arduino IDE CCLib\Arduino\CCLib\Examples\CCLib_proxy\CCLib_proxy.ino

If flashing via esp8266 (wemos d1 mini), you need change connection (p. 5) and Pinout configuration in Arduino/CCLib/Examples/CCLib_proxy/CCLib_proxy.ino:

int CC_RST   = 5;
int CC_DC    = 4;
int CC_DD_I  = 14;
int CC_DD_O  = 12;

Install Python 2.7 or later (tested with python 2.7.13), if not installed
Install pyserial 3.0.1, if not installed pip install -r CCLib\Python\requirements.txt or pip install pyserial==3.0.1
Connect the contacts as described https://github.com/kirovilya/CCLib#1-prepare-your-arduino-board But in my case, I connected completely without resistors, combined the contacts CC_DD_I and CC_DD_O together and connected to the DD pin of the DEBUG connector!

I connected only 3 specified contacts and GND. During the firmware, the stick and Arduino must be connected to the USB.

After that, try to get information about the chip - if it works, then the connection is correct (example for COM9 port - Arduino port):

C:\Projects\CCLib\Python>python cc_info.py -p COM9
INFO: Found a CC2531 chip on COM9

Chip information:
      Chip ID : 0xb524
   Flash size : 256 Kb
    Page size : 2 Kb
    SRAM size : 8 Kb
          USB : Yes

Device information:
 IEEE Address : 00124b0014aa
           PC : 0000

Debug status:
 [ ] CHIP_ERASE_BUSY
 [ ] PCON_IDLE
 [X] CPU_HALTED
 [ ] PM_ACTIVE
 [ ] HALT_STATUS
 [ ] DEBUG_LOCKED
 [X] OSCILLATOR_STABLE
 [ ] STACK_OVERFLOW

Debug config:
 [ ] SOFT_POWER_MODE
 [ ] TIMERS_OFF
 [X] DMA_PAUSE
 [X] TIMER_SUSPEND

Another example of connection on MacOS

If everything is successful, then download modified firmware for flashing via Arduino
Start the flashing firmware (it takes a long time, about 2-3 hours):

C:\Projects\ZigBee>python cc_write_flash.py -e -p COM9 --in=CC2531ZNP-Pro-Secure_LinkKeyJoin_mod.hex
INFO: Found a CC2531 chip on COM9

Chip information:
      Chip ID : 0xb524
   Flash size : 256 Kb
    Page size : 2 Kb
    SRAM size : 8 Kb
          USB : Yes
Sections in CC2531ZNP-Pro-Secure_LinkKeyJoin_mod.hex:

 Addr.    Size
-------- -------------
 0x0000   8176 B
 0x1ff6   10 B
 0x3fff0   1 B
 0x2000   239616 B

This is going to ERASE and REPROGRAM the chip. Are you sure? <y/N>:  y

Flashing:
 - Chip erase...
 - Flashing 4 memory blocks...
 -> 0x0000 : 8176 bytes
    Progress 100%... OK
 -> 0x1ff6 : 10 bytes
    Progress 100%... OK
 -> 0x3fff0 : 1 bytes
    Progress 100%... OK
 -> 0x2000 : 239616 bytes
    Progress 100%... OK

Completed

3.9 KiB Raw Blame History

Alternative flashing methods

Via Arduino/ESP8266

3.9 KiB

Raw Blame History