The Arduino onboard USB to serial is connected to D0 (Rx) and D1 (Tx).
And without a USB connected to the Arduino you can use a USB/TTL adapter connected to D0 and D1 like this;
Arduino - USB/TTL
Tx - Rx
Rx - Tx
And to get the Arduino inte "programming" mode:
Automatic way, if the USB/TTL have CTS, connect it to Arduinos reset pin.
It's enforcing this line from the arduino:avr boards.txt
To be clear, the board is assumed to have a bootloader, even if you're not using it to get the code onto the board, that is upload via programmer.
You could edit that and change some fuses yourself. But you could also probably just use MCUdude ...
In the Arduino IDE do this:
File > Preferences > Show verbose output during: > upload (check) > OK
Tools > Burn Bootloader
After it finishes examine the output in the black console window at the bottom of the Arduino IDE window. If you look carefully you'll see that the Arduino IDE actually runs two separate AVRDUDE commands when you Burn ...
There are no programmers for ESP32. It only accepts Serial upload over bootloader.
Versions of IDE before 1.8.13 displayed programmers for all board support packages, that is why a programmer could be selected. Now only programmers for package of the selected board are available. But programmers are used only with the "Burn bootloader" or "...
For me the problem was the selected "processor" type.
I had to change it to 328p (old bootloader).
Also, raise the IDE's verbosity, in order to have a nice progress bar when loading the sketch.
OS: Linux Mint 18.3
Linux kernel: 4.13.0-37-generic
Arduino IDE: v1.8.5
board: the cheap and common Nano Chinese clone
USB to serial chip: CH340
If you don't have experience working with AVRs at a low level then stay away from that. It doesn't provide any connection for a programmer and relies on the Micronucleus bootloader already being in place.
If you really want to experiment with ATtiny development then go with either an Adafruit Trinket or a Digistump Digispark (both of which already have ...
If you are using the bootloader, you are not using a programmer. The programmer, when used, is connected to the ICSP pins on the Arduino. The bootloader however expects a well-defined sequence of data from the Arduino through the serial port immediately after reset. The bootloader recognizes that (if received) and reprograms the flash.
If you turn on ...
As of V1.8.2, the ATMEL-ICE is now included as a programmer in the Arduino IDE.
The ATMEL-ICE was not available as a in-system programmer (ISP) in version 1.6.8 of the Arduino IDE.
On the 20th of Jan 2017, user facchinm added the ATMEL-ICE to the list of programmers in the IDE, and it was merged into the master on the 8th of Feb. It was released as a ...
You might be on the wrong track.
You do need a crystal (or not, it depends on), and an Atmel programmer if you want to program an empty chip.
However, all Arduino boards come with a chip pre-programmed with a bootloader.
Then it is rather easy: you need an FTDI cable to connect the board to a PC. Then run Arduino IDE on the PC. (The FTDI cable is actually ...
Short answer: I'm afraid you can't do it with Arduino IDE 1.0.5.
First of all, be aware that -B20 does not specify the baud rate but the bitclock period (in us); this is specific to stk500v2 programmer.
Normally, enabling your programmer should only be a matter of adding it to the list of programmers known by Arduino IDE; that list can be ...
It looks like the capacitors on your crystal are considerably bigger than they should be.
You are switching the clock to the external crystal, and because you have such massive capacitors on it it's failing to oscillate. Without that oscillation the chip can't run, and so it can't respond to the programming.
The crystal capacitors should be roughly 2x the ...
You can download the hex machine code from the Arduino by using an ISP programmer, like this one:
A command like this could be used to read the flash memory and save it into myfile.hex:
avrdude -c avrisp -p m328p -U flash:r:myfile.hex:i
However be warned that this file will look like this:
It is certainly possible to do this.
I want to store the programming code in the EEPROM of the "Programmer Arduino" and using any interface like SPI, I2C or Serial, burn this code to the Second arduino.
I should point out that the EEPROM may not be large enough for this. For example, the Uno has only 1KB of EEPROM.
A more workable solution would be to ...
Yes, for the Due, but No, for a Zero or Adafruit Feather M0.
The Due uses the Atmel SAM3X8E featuring:
16 Kbytes ROM with embedded bootloader routines
As a ROM the contents are fixed during manufacture, so would be there in a new chip.
However it is worth noting that many SAM devices including this one have the NVM bits that are much like the fuse ...
You should have, somewhere in your hard drive, a file named
avrdude.conf. My copy of the file has the following lines:
id = "m2560";
desc = "ATmega2560";
signature = 0x1e ...
You can try running the code upload command directly using a precompiled hex file.
Here is how.
Go to preferences in Arduino IDE
Set the Show verbose output during: upload option.
Upload the blink sketch. (arduino does not have to be connected)
After the compilation, check the log window at bottom of the IDE.
You will find a line like this:
AVRDUDE can program EEPROM. I usually do this as part of the firmware burn - the operator can pick which config block should go into the board while running the programming cycle. In some cases the EEPROM info is even generated programmatically during the cycle to contain dynamic info like unit serial number and commision date.
Here is an example command ...
Benefits of STK500? Sure:
- It has push buttons
- It has LEDs
- It has easy accessible connectors to any controller pin
Actually that's all. If you want/need to make use of this, buy both. Use the STK for "rapid prototyping" and the Dragon for debugging.
But if your budget allows it, have a look at the STK600 instead of 500. It's more expensive, but not so "...
Is it possible to program Arduino UNO with USB/TTL adaptor without connecting the Vcc and GND pins (RX/TX and DTR only.)
As a minimum you need to add ground as well - even if the Mac is battery powered. Serial port signals are ground referenced so removing the ground would prevent operation.
Operation is possible without deriving Vcc from the USB ...
Yes, the -c option specifies the methods of interacting with the device's loader.
The source code of the arduino programmer is http://svn.savannah.nongnu.org/viewvc/trunk/avrdude/arduino.c?root=avrdude&view=markup
Specifically, '-c arduino' chooses the client side code tailored to the bootloader in the Arduino Uno. Looking at the code in the above ...
This board supports Attiny25/45/85 MCUs. It is possible to use bootloader with this board. It can be a low speed (1.5MBps) USB device. More info can be found in this article: https://makbit.com/web/firmware/breathing-life-into-digispark-clone-with-attiny-mcu/
TL;DR: It's basically a bigger digispark with a socket and different header.
Just for completeness:
It depends on the product description, recently I ordered two of your link and some of these. Those seem to be the same board as you asked for, but in your link the "Package includes" only mentions the board without MCU, which would render the question ...
Yes, you can substitute the Arduino Nano V3 for the Arduino Uno and follow the instructions here, providing that the Arduino Pro Mini is a 5V version. (Otherwise, you will have to do some voltage conversion.)
Both boards have the same SPI pins as the Arduino Uno. The connections would be as follows:
Arduino Nano --> Arduino Pro Mini
Micronucleus is a bootloader - in the same way that Optiboot is a bootloader used on the Uno. It provides the USB connection to program the chip.
Without it you can't do anything at all with that, since the USB port just plugs direct into the ATTiny chip. With no software on the chip the USB port doesn't do anything. It's kind of a catch-22 situation - you ...
It isn't clear to me what you need to do- both for specific chip and your programming needs.
You can easily program an ATTiny with just an arduino and a breadboard. A breakout board and a socket are fun, you could also build or buy a permanent shield for this.
With that breakout board (you could just use a breadboard, too) and an Arduino, you can program ...
I have successfully used Arduino as ISP (not to be confused with Arduino ISP) on a Mega clone that has a funky FTDI-clone onboard, and would not let me upload bootloader through serial. This worked fine, and is cheap.