has anyone a schematic for the old type(?) CZ mini STM32F103ZX ?
my version has power switch and socket, pl2303 usb connector, a pure usb connector, tft connector and probably a sdio sd cart. nothing extra like i2c eeprom or spi flash & there aren't pads for them either.
it's a bit worrying that PB6 & PB7 on the TFT header ? i suspect that means remapping is in play for i2c
i'm sure i've not seen a display header with I2C1 pins on it.
also spi1 pins pa5-pa7 are on it as well, but their position on the connector looks reasonable for display touch and flash.
Generic boards that are not Maple or Maple mini clones, and don't contain the additional USB reset hardware
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