Difference between revisions of "Arduino flasher 3.3v"

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(Created page with "== Introduction == This explains how to: * Easily lower the voltage of an arduino * Use that arduino to flash a coreboot image on a GM45 Thinkpad with a SOIC16 chip It requir...")
 
(Introduction)
Line 12: Line 12:
  
 
It was tested with:
 
It was tested with:
* An arduino.org "nano version 3.3"
+
* An Arduino.org "nano version 3.3"
* A Ssparkfun "FTDI Basic 3v3" (Uses an FTDI FT232R)
+
* A Sparkfun "FTDI Basic 3v3" (Uses an FTDI FT232R)
 +
 
 +
== HOWTO ==
 +
* Flash the Arduino with frser-duino and lower the serial port speed to 115200
 +
# make u2
 +
# BLBAUD=57600 SERIAL_DEV=/dev/ttyUSB0 make program
 +
* Connect the FTDI adapter to RX and TX of the arduino
 +
* Connect the 3V3 of the FTDI adapter to the 5V pin of the Arduino
 +
* Connect the GND of the FTDI adapter to the GDN of the arduino.
 +
* Get an USB cable and don't connect it to the computer
 +
* Connect it to the FTDI adapter
 +
* Connect the clip (Like a SOIC-8 or SOIC16 Pomona clip) to the arduino
 +
* Connect the USB cable to the computer.

Revision as of 15:52, 16 March 2017

Introduction

This explains how to:

  • Easily lower the voltage of an arduino
  • Use that arduino to flash a coreboot image on a GM45 Thinkpad with a SOIC16 chip

It requires:

  • An AVR Arduino at 5v
  • An USB<->Serial adapter capable of providing enough current to power up:
    • The arduino
    • The flash chip
    • The circuits around the flash chip

It was tested with:

  • An Arduino.org "nano version 3.3"
  • A Sparkfun "FTDI Basic 3v3" (Uses an FTDI FT232R)

HOWTO

  • Flash the Arduino with frser-duino and lower the serial port speed to 115200
# make u2
# BLBAUD=57600 SERIAL_DEV=/dev/ttyUSB0 make program
  • Connect the FTDI adapter to RX and TX of the arduino
  • Connect the 3V3 of the FTDI adapter to the 5V pin of the Arduino
  • Connect the GND of the FTDI adapter to the GDN of the arduino.
  • Get an USB cable and don't connect it to the computer
  • Connect it to the FTDI adapter
  • Connect the clip (Like a SOIC-8 or SOIC16 Pomona clip) to the arduino
  • Connect the USB cable to the computer.