Problem useing SPI together with UART as SPI

[kirlik]

As soon as I add USART initialization, SPI starts sending data using LSB and receiving with MSB(as it was intended) bit order.

SPI init code:

/* SPI configuration */
  SPI_DeInit();
  /* Initialize SPI in Slave mode  */
//  SPI_Init(SPI_FIRSTBIT_LSB, SPI_BAUDRATEPRESCALER_2, SPI_MODE_SLAVE, SPI_CLOCKPOLARITY_LOW,
  SPI_Init(SPI_FIRSTBIT_MSB, SPI_BAUDRATEPRESCALER_2, SPI_MODE_SLAVE, SPI_CLOCKPOLARITY_LOW,
           SPI_CLOCKPHASE_1EDGE, SPI_DATADIRECTION_2LINES_FULLDUPLEX, SPI_NSS_HARD,(uint8_t)0x07);
	SPI_ITConfig(SPI_IT_RXNE,ENABLE);
	SPI_ITConfig(SPI_IT_TXE,ENABLE);
	SPI_Cmd(ENABLE);

UART init code:

UART1_DeInit();
  
  UART1_Init((uint32_t)1000000, UART1_WORDLENGTH_8D, UART1_STOPBITS_1, UART1_PARITY_NO, 
              (UART1_SyncMode_TypeDef)(UART1_SYNCMODE_CLOCK_ENABLE | UART1_SYNCMODE_CPOL_LOW |UART1_SYNCMODE_CPHA_MIDDLE |UART1_SYNCMODE_LASTBIT_ENABLE),
              UART1_MODE_TXRX_ENABLE);
							
	UART1->BRR2 &= (uint8_t)(~UART1_BRR2_DIVF); 
  UART1_Cmd(ENABLE);

[WilkoL]

What does the rest of the code look like? Initialization only doesn't seem to do anything, although I have never seen anyone using the USART as a SPI peripheral. And how are the USART and the SPI connected? To what?

[kirlik]

The rest of the code is, in theory, not so important, as it works correctly until the UART is initialized.

In the end, I replaced UART as SPI with software SPI. However, I found a bug that led to this strange behavior. CS was not connected and, as a result, was constantly active(although this is not prohibited).

As for the task description, I make a "layer" between the sensor and another MCU. So I need to communicate with the sensor as the master and process requests from another microcontroller over the same protocol as the slave... Strange, but that's the task. =)

[cihadkck]

"I am facing the similar issue too but i can monitorize data i send to motor driver."

I am using g431rb and sabertooth 2x32 to drive motors. UART handles communication between these two devicesbut i need to control LED Strip also and i am using SPI for that. I can control them seperately it is really easy but when i want to run motors and turn on the led strip in the same time, i cant drive the motors. They never move but i am monitoring data (which i sent to ride to motors) with arduino serialthrough application. i have to make them work together, I am also looking for solution for this problem.

Let me know if you have any question about my issue.