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--- projects:repair:dell_pa10 [2013/05/11 20:47] – [Alternatives implementations] admin
+++ projects:repair:dell_pa10 [2013/10/29 02:05] (current) – [Relevant articles] admin
@@ Line 67: / Line 67: @@
   * Other: 12HV609, 12HV615, 16HV540, 16HV610
-==== Alternatives implementations ====
+==== attinty13 solution ====
+Test the communications with the controller with:
+  avrdude -P usb -c dragon_isp -p attiny13 -v
+With the attiny13 solution, program the microcontroller with:
+  avrdude -P usb -c dragon_isp -p attiny13 -Uflash:w:/Users/iudex/Downloads/tiny13-90w/Dell_1wire.hex:i
+  avrdude -P usb -c dragon_isp -p attiny13 -Ueeprom:w:/Users/iudex/Downloads/tiny13-90w/Dell_1wire.eep:i
+The terminal mode can be entered with:
+  avrdude -P usb -c dragon_isp -p attiny13 -t
+==== fuse settings ====
+  * see at this page for info about setting the fuses: [[http://www.engbedded.com/fusecalc]]
+==== Debugging with Bus Pirate ====
+Connect Bus Pirate with 1-wire device as follows:
+  * (Bus Pirate) MOSI -> (ATtiny13A) 1-wire data pin (to 47 ohm resistor)
+  * (Bus Pirate) GND -> (ATtiny13A) GND
+Because the ATtiny13A is not a genuine 1-wire ic, connect additionally:
+  * (Bus Pirate) +5v -> (ATtiny13A) +5v
+With Bus Pirate v4 an external pull-up resistor is not required. The board con be configured by software to have one. Use a terminal, configure speed to 9600 N81, 'new line' shall be only CR. Connect the Bus Pirate and enter the following commands:
+<code>
+HiZ>m
+. HiZ
+. 1-WIRE
+. UART
+. I2C
+. SPI
+. 2WIRE
+. 3WIRE
+. KEYB
+. LCD
+. PIC
+. DIO
+x. exit(without change)
+(1)>2
+Ready
+-WIRE>v
+Pinstates:
+#12    .#11    .#10    .#09   .#08   .#07   .#06   .#05   .#04   .#03   .#02   .#01
+GND.5.0V.3.3V.VPU.ADC.AUX2.AUX1.AUX.-.-.-.OWD
+P.P.P.I.I.I.I.I.I.I.I.I.
+GND.0.00V.0.00V.0.00V.0.00V.L.L.L.L.L.L.L.
+-WIRE>W
+POWER SUPPLIES ON
+-WIRE>P
+Pull-up resistors ON
+Warning: no voltage on Vpullup pin
+-WIRE>e
+Select Vpu (Pullup) Source:
+) External (or None)
+) Onboard 3.3v
+) Onboard 5.0v
+(1)>3
+V on-board pullup voltage enabled
+-WIRE>v
+Pinstates:
+#12    .#11    .#10    .#09   .#08   .#07   .#06   .#05   .#04   .#03   .#02   .#01
+GND.5.0V.3.3V.VPU.ADC.AUX2.AUX1.AUX.-.-.-.OWD
+P.P.P.I.I.I.I.I.I.I.I.I.
+GND.4.96V.3.34V.4.86V.0.00V.L.L.L.H.H.H.H.
+-WIRE>(0)
+.Macro menu
+Macro     1WIRE address
+No device, try (ALARM) SEARCH macro first
+WIRE ROM COMMAND MACROs:
+.READ ROM (0x33) *for single device bus
+.MATCH ROM (0x55) *followed by 64bit address
+.SKIP ROM (0xCC) *followed by command
+.ALARM SEARCH (0xEC)
+.SEARCH ROM (0xF0)
+-WIRE>(240)
+SEARCH (0xF0)
+Macro     1WIRE address
+Device IDs are available by MACRO, see (0).
+...
+...
+...
+</code>
+If you are ready, either type:
+<code>
+-WIRE>e
+Select Vpu (Pullup) Source:
+) External (or None)
+) Onboard 3.3v
+) Onboard 5.0v
+-WIRE>p
+Pull-up resistors OFF
+(1)>1
+ on-board pullup voltage disabled
+-WIRE>w
+POWER SUPPLIES OFF
+</code>
+or type 'm', which will turn off all outputs, power supplies and pull-up resistors. It's ready to accept a new mode. Press 1 to return to HiZ mode:
+<code>
+-WIRE>m
+. HiZ
+. 1-WIRE
+. UART
+. I2C
+. SPI
+. 2WIRE
+. 3WIRE
+. KEYB
+. LCD
+. PIC
+. DIO
+x. exit(without change)
+(1)>1
+Ready
+HiZ>
+</code>
+Programming a DS2502 with bus pirate:
+<code>
+-WIRE>(51)
+BUS RESET  OK
+READ ROM (0x33): 0x89 0xA0 0x56 0x2E 0x12 0x70 0x5E 0x1C
+Unknown device
+-WIRE>r
+READ: 0xFF
+-WIRE>r:255
+READ: 0xFF 0xFF ... 0xFF
+</code>
+bytes will be read
+</code>
+==== Alternative implementations ====
 Searching with google for 1 wire emulator revealed following pages:
   * [[https://xn--wp-gka.de/index.php?Dell-1wire]] Implementation in a ATtiny13 microcontroller for a 90W Dell power adapter
@@ Line 74: / Line 214: @@
   * [[http://avr.ru/ready/inter/1wire/1wire]] Emulation of the 1 wire protocol in a AtMega 16
   * [[http://www.cczwei-forum.de/cc2/thread.php?postid=2359]] ATM18:: 1-Wire Emulator project for a DS1820 Temperature sensor
+Some information and a small video on defective parts on eevblog can be found [[http://www.eevblog.com/forum/projects/laptop-ac-adapter-tester-wip-design-tips-needed/|here]].
+==== Relevant articles ====
+  * [[http://www.laptop-junction.com/toast/content/inside-dell-ac-power-adapter-mystery-revealed]]
+  * [[http://www.howtofixcomputers.com/forums/dell/dell-pa-10-ac-adapter-center-pin-108608.html]]
+  * [[http://www.chzsoft.de/storage/2501unw.pdf]] datasheet Dallas Semiconductor DS2501 with 512 bits
+  * [[http://ww1.microchip.com/downloads/en/DeviceDoc/41270E.pdf]] Datasheet PIC10F220 from Microchip
+  * [[http://dangerousprototypes.com/docs/3EEPROM_explorer_board]] 1-wire tutorial with eeprom DS2431
+  * [[http://dangerousprototypes.com/docs/Bus_Pirate_menu_options_guide]] Bus Pirate menu options guide
+  * [[http://dangerousprototypes.com/docs/1-Wire]]
+  * [[http://www.youtube.com/watch?v=VVyCg_JFt1E]] Youtube clip about downloading source code, building uploading and using 1-wire as an example.
+  * [[http://hackaday.com/2008/12/24/parts-1k-1-wire-eeprom-ds2431/]] programming session with 1-wire and bus pirate

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