Resolved! Request technical support for SPI communication between STMicroelectronics Nucreo F401RE board and tpm module.
I coding in C/C++, and using SPI function through 'HAL_SPI_Transmit' and 'HAL_SPI_Receive'.TPM module send me only 'ff ff ff ff ... ff ff'.i see the tpm module's manual, but i can't understand.plz, tell me a few example code.