- Welcome to Olimex Support Forum.
Olimex Support Forum
Recent posts
#21
New Products release / New Open Source Hardware board...
Last post by olimex - November 11, 2025, 02:39:35 PMNew Open Source Hardware board in stock: ESP32-C5-DevKit-Lipo Dual band 2.4Ghz and 5Ghz WiFi 6, Bluetooth 5 LE, Zigbee, Thread, Matter in breadboard friendly DIL format
https://olimex.wordpress.com/2025/11/11/new-open-source-hardware-board-in-stock-esp32-c5-devkit-lipo-dual-band-2-4ghz-and-5ghz-wifi-6-bluetooth-5-le-zigbee-thread-matter/ #esp32 #esp32c5 #iot #wifi6 #zigbee #matter
https://olimex.wordpress.com/2025/11/11/new-open-source-hardware-board-in-stock-esp32-c5-devkit-lipo-dual-band-2-4ghz-and-5ghz-wifi-6-bluetooth-5-le-zigbee-thread-matter/ #esp32 #esp32c5 #iot #wifi6 #zigbee #matter
#22
AVR / Re: Need Help Programming a AT...
Last post by LubOlimex - November 11, 2025, 08:56:47 AMDescribe the exact connections between the target and the AVR-P20, maybe I can spot something wrong.
Maybe also test with avrdude it should have support for STK200.
Maybe also test with avrdude it should have support for STK200.
#23
AVR / Re: Need Help Programming a AT...
Last post by beatlerat - November 10, 2025, 11:16:59 PMQuote from: LubOlimex on November 10, 2025, 08:37:22 AMUmmm, ATtiny13 doesn't come in a package suitable for AVR-P20-10MHZ...You are correct. I added an eight pin socket and correctly ran wires from the existing socket to the eight pin.
THanks
I am also running BASCOM AVR Demo
#24
FPGA / Re: Programming iCE40HX1K-EVB ...
Last post by nenadp - November 10, 2025, 03:08:30 PMHey LubOlimex,
Great, thanks! That worked, once I "rotated" all my cable connections I got the propper response:
Great, thanks! That worked, once I "rotated" all my cable connections I got the propper response:
init..
cdone: high
reset..
cdone: low
flash ID: 0x1C 0x70 0x15 0x1C 0x70 0x15 0x1C 0x70 0x15 0x1C 0x70 0x15 0x1C 0x70 0x15 0x1C 0x70 0x15 0x1C 0x70 0x15 0x1C 0x70 0x15 0x1C 0x70 0x15 0x1C 0x70 0x15 0x1C 0x70
cdone: high
Bye.
#25
FPGA / Re: Programming iCE40HX1K-EVB ...
Last post by LubOlimex - November 10, 2025, 09:14:17 AMI believe the UEXT orientation is wrong. I mean the brown wire that should be connected to UEXT pin 2 is in fact connected to UEXT pin 9. Refer to this picture, pay attention to the UEXT connector cut (opening) in the picture:
https://www.olimex.com/Products/Modules/UEXT/images/UEXT-PINS.jpg
https://www.olimex.com/Products/Modules/UEXT/images/UEXT-PINS.jpg
#26
AVR / Re: Need Help Programming a AT...
Last post by LubOlimex - November 10, 2025, 08:37:22 AMUmmm, ATtiny13 doesn't come in a package suitable for AVR-P20-10MHZ...
#27
AVR / Need Help Programming a ATTiny...
Last post by beatlerat - November 09, 2025, 01:14:54 AMI thought I could do this without help, but I need to find a good tutorial, or a push to get going. Here is my program.
$crystal = 1000000
Dim X As Byte
Config Portb.3 = Output
Do
Toggle Portb.3
Waitms 200
Toggle Portb.3
Waitms 1300
Loop
It compiles OK, but when I send it to the chip, nothing happens. I had to replace the LM317T regulator on the board, but when I apply 12 volts to the board, the LED does not light up. I set the chip voltage to 5 volts and have the 3.3v shunt unplugged. I am using an older Keyspan USB to serial converter, and I am assuming my baud rates are suspect. I have everything set to 9600.
Please help me where to look. I am trying to keep this simple as I have been unable to program the chip using a Arduino Nano.
Thanks for your help.
$crystal = 1000000
Dim X As Byte
Config Portb.3 = Output
Do
Toggle Portb.3
Waitms 200
Toggle Portb.3
Waitms 1300
Loop
It compiles OK, but when I send it to the chip, nothing happens. I had to replace the LM317T regulator on the board, but when I apply 12 volts to the board, the LED does not light up. I set the chip voltage to 5 volts and have the 3.3v shunt unplugged. I am using an older Keyspan USB to serial converter, and I am assuming my baud rates are suspect. I have everything set to 9600.
Please help me where to look. I am trying to keep this simple as I have been unable to program the chip using a Arduino Nano.
Thanks for your help.
#28
FPGA / Re: Programming iCE40HX1K-EVB ...
Last post by nenadp - November 08, 2025, 06:00:25 PMHey mywave82 thanks for this tutorial. (I'm newbie to the world of FPGA)
I am trying to follow it, my components are:
- Olimex ICE40HX1K-EVB
(Note: CN3 instead CN1)
- Lattice FT2232H-56Q MINI MDL
I have connected pins as on your diagram:
When trying to execute:
or even
it says:
init..
cdone: low
reset..
cdone: low
Extended Device String Length is 0xFF, this is likely a read error. Ignoring...
flash ID: 0xFF 0xFF 0xFF 0xFF
cdone: low
(that is, when i hold Olimex reset button, if reset button is not pressed, then cdone is: high)
I also read somewhere that longer cables might be the issue. Mine are around 20cm.
I wonder if my cable connections are wrong or perhaps perhaps something else going on?
Thanks for clues.
I am trying to follow it, my components are:
- Olimex ICE40HX1K-EVB
(Note: CN3 instead CN1)
- Lattice FT2232H-56Q MINI MDL
I have connected pins as on your diagram:
WIRE | ICE40HX1Kz-EVB | FT2232H-56Q MINI MDL
---------------------------------------------------------
BROWN | GND | CN2 GND
ORANGE | CDONE | CN2 AD6
YELLOW | CRESET | CN2 AD7
WHITE | SDI | CN2 AD2
PURPLE | SDO | CN2 AD1
BLUE | SCK | CN2 AD0
GREEN | SS_B | CN2 AD4
BLACK | --- | CN3 VBUS to CN3 VCC
RED | --- | CN3 V3V to CN3 VIO
When trying to execute:
Code Select
iceprog -t
or even
Code Select
iceprog -t -s
it says:
init..
cdone: low
reset..
cdone: low
Extended Device String Length is 0xFF, this is likely a read error. Ignoring...
flash ID: 0xFF 0xFF 0xFF 0xFF
cdone: low
(that is, when i hold Olimex reset button, if reset button is not pressed, then cdone is: high)
I also read somewhere that longer cables might be the issue. Mine are around 20cm.
I wonder if my cable connections are wrong or perhaps perhaps something else going on?
Thanks for clues.
#29
A64 / Re: PE16/POWERON PIN with 1k r...
Last post by LubOlimex - November 07, 2025, 09:29:13 AMJust remove the resistor you placed and use the PWRON1 button, hold it for few seconds and the board would turn off and won't boot back again. That is until you press and hold it again, then it will boot.
#30
ESP32 / Re: ESP32-POE problems on just...
Last post by LubOlimex - November 07, 2025, 08:56:02 AMThere is physical reason by design for this behavior. Check D4 diode on the GPI36 wire, diode is near the UEXT and it leads to this continuity behavior.
Diode is placed to prevent accidental parasitic powering via the UART. If you are good enough with the soldering iron you can remove the diode and solder the pads together, this will lead to similar behavior as other pins at the UEXT.
Notice that GPI34 is only input regarding the ESP32 chip, this is by Espressif design, hence we decided to name the wire as GPI34 (as opposed to GPIO34).
Diode is placed to prevent accidental parasitic powering via the UART. If you are good enough with the soldering iron you can remove the diode and solder the pads together, this will lead to similar behavior as other pins at the UEXT.
Notice that GPI34 is only input regarding the ESP32 chip, this is by Espressif design, hence we decided to name the wire as GPI34 (as opposed to GPIO34).