Hello Luca, On 06.03.2018 07:25, Luca Bacci Bonotti wrote: > I tried with chip soldered and unsoldered. Same results.
same results? probably due to very different problems. Especially when the chip is not part of a circuitry (that might already take care), you have to connect all input pins of the chip. Also, very often, a series resistor at least on the MISO output is required. > I previously tried programming with raspberry PI but it was unable to see > my chip. > I have both CH341A and Raspberry Pi. When you use the Raspberry Pi, make sure you set the `spispeed` parame- ter of linux_spi to something reasonable (I'd start trying around 1000, i.e. 1MHz), the default is OS dependent and often not reliable. > Where should i connect /HOLD /WP on the CH341A ? /HOLD should be pulled up towards VCC (i.e. using a series resistor, 10kOhm maybe), state of /WP usually only matters when the chip has some write-protection set up, so either pull up towards VCC or down towards GND (if in doubt, up). Nico _______________________________________________ flashrom mailing list firstname.lastname@example.org https://mail.coreboot.org/mailman/listinfo/flashrom