JTAGICE mkii and connecting to ICSP

Hi,

Hi, I’m, finding a dead short occurs in my Arduino UNO’s (1 off), Duamilanoves (3 off) and Atmel STK500’s (2 off) when I connect my JTAGICE mkii. Do I as I suspect have a fault in the AVR-JTAG or am I doing something wrongly.

Dead short indication to me is that whichever board is in use their indicators all go low as soon as the JTAG is attached to the ICSP pins. My AVR-JTAG mkii is of the usb., inwards and 10 pole output plug type which I convert by 10 pole adapter pin to 6 pole plug type.

Cheers,
Chris S

Atmega328s do not support JTAG - need a bigger chip like 1284P, 2560. What pins are you connecting to? JTAG 10-pin connector with a couple of grounds. How is your adapter wired?

ICSP has only 1 Gnd:

1 MISO 2 +5 3 SCK 4 MOSI 5 Reset 6 GND

JTAG 1 TCK 2 GND 3 TDO 4 +5 5 TMS 6 Reset 7 NC 8 NC 9 TDO 10 GND

10-pin ISP - need to look this up 1 2 3 4 5 6 7 8 9 10

CrossRoads: Atmega328s do not support JTAG - need a bigger chip like 1284P, 2560. What pins are you connecting to? JTAG 10-pin connector with a 6 pin adapter

10-pin ISP - need to look this up 1 2 3 4 5 6 7 8 9 10

As I said primarily: My AVR JTAGICE Mkii is of the form: Input) USB Output) 10 pin reduced by adapter to 6 pin. ToSink) Arduino 328's & or Atmel STK500. (Have 1284 (STK500/501) & 2560(Ard Atmega) but haven't tried them). This leads to the ICSP, OF MISO;Vcc;SCK;MOSI;Rset;Gnd. In that order, I believe.

Why is it I haven't read that the AVRISP, won't function on a 328, most confusing.

I also have the following USB adapters: 1) USBASP 2) FTDI232R 3) CH430R IN USE. Programming ProMini's. & 4) Atmel 10 pin "Plug" to "Squid [octopus cabling]".

Chris S.

CrossRoads: Atmega328s do not support JTAG - need a bigger chip like 1284P, 2560. What pins are you connecting to? JTAG 10-pin connector with a couple of grounds. How is your adapter wired?

ICSP has only 1 Gnd:

1 MISO 2 +5 3 SCK 4 MOSI 5 Reset 6 GND

JTAG 1 TCK 2 GND 3 TDO 4 +5 5 TMS 6 Reset 7 NC 8 NC 9 TDO 10 GND

10-pin ISP - need to look this up 1 2 3 4 5 6 7 8 9 10 End Quote:

Cross Roads. I was concious of these pin outs and I have tried both a fixed in stone (ie., one that I cannot easilly alter) 10 to 6 pin reducer and also I have used both seperate dupont jumper wires and the Atmel Octopus lead connecting as you stipulate but my results remain broadly similar.

The AVRJTAGICE mkii shows one green principal led., and two red led's illuminated the third extinguished; I have also seen a picture of a chap off Adafruit using what he simplistically calls a MKii which also shows two red leds and one principal green illuminated and the third red led, extinguished. Everywhere I look I simply do not seem to find the answer as to are all my project boards broken as far as ICSP is concereneed or is the AVR.......Ice simply bust.

Chris S.

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ChrisPSR:

CrossRoads: Atmega328s do not support JTAG - need a bigger chip like 1284P, 2560. What pins are you connecting to? JTAG 10-pin connector with a couple of grounds. How is your adapter wired?

ICSP has only 1 Gnd:

1 MISO 2 +5 3 SCK 4 MOSI 5 Reset 6 GND

JTAG 1 TCK 2 GND 3 TDO 4 +5 5 TMS 6 Reset 7 NC 8 NC 9 TDO 10 GND

10-pin ISP - need to look this up 1 2 3 4 5 6 7 8 9 10

Cross Roads. I was concious of these pin outs and I have tried both a fixed in stone (ie., one that I cannot easilly alter) 10 to 6 pin reducer and also I have used both seperate dupont jumper wires and the Atmel Octopus lead connecting as you stipulate but my results remain broadly similar.

The AVRJTAGICE mkii shows one green principal led., and two red led's illuminated the third extinguished; I have also seen a picture of a chap off Adafruit using what he simplistically calls a MKii which also shows two red leds and one principal green illuminated and the third red led, extinguished. Everywhere I look I simply do not seem to find the answer as to are all my project boards broken as far as ICSP is concereneed or is the AVR.......Ice simply bust.

Chris S.