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lorf avatar lorf commented on August 22, 2024

Can You please try different versions of csr-spi-ftdi, e.g. https://github.com/lorf/csr-spi-ftdi/releases/tag/0.5.2. It looks like folks getting troubles with the latest testing releases: #31

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brandon3055 avatar brandon3055 commented on August 22, 2024

I tried a few different versions but nothing really changed. Based on the pinout i posted how exactly should i wire this?
I have:
CS -> DTR
CLK -> RTS
MOIS -> MOIS
MISO -> MISO
GND -> GND

The chip is powered by a lithium cell connected to VBAT though i also tried with 5v and 4.4v attached to VBAT

Also tried pulling PCM to 1.8v and 5v via a 10k resistor, Finally also tried every combination of having the chip turned on/off and connecting the POWER_EN pin to logic HI (by default to power on the chip you connect POWER_EN to power for about 3 seconds to power on the chip)

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666dsa666 avatar 666dsa666 commented on August 22, 2024

Having the same issue, I even bought a CSR programmer to no avail, same exact error.

Maybe 8635 is not compatible ?

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tasker-k avatar tasker-k commented on August 22, 2024

CSR8635 uses the SPI interface to burn the set value. Please note that the PCM (SPI) of the Bluetooth module needs to be connected to the 1V8 HIGH potential before entering the SPI mode, otherwise it will not be able to burn.

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