Thank you BSTRobin for your attention to my problem. - STM32f103RCT6 - GY-BM E/P 280 (Chinese module with BME280) 6 soldered wires 15cm - SEGGER JLink - VSCode + xpack-windows-build-tools-4.3.0-1 + xpack-arm-none-eabi-gcc-10.3.1-2.3 - latest CubeMX project makefile with Include driver bme280 - use HAL freeRTOS. - SPI1 hardware, Full-Duplex master , interrupt disable, Frame format motorola, Data Size 8 Bits, First Bit MSB first. Prescaler 8, Baud Rate 9.0 MBits/s, NSS Hardware, Polarity low, Phase 1 edge. Perhaps these are all my settings.
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