Solved
HardFault on SPI transmit
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You're missing some important & symbols.
HAL_SPI_Transmit(&hspi2, (uint8_t*) &temp_address, 2, 1000);
HAL_SPI_Receive(&hspi2, (uint8_t*) &returnData, 4, 1000);Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.