QSPI TxFIFO information in TC234 Controller

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User16280
Level 1
Level 1
Hi Reader,

After loading the data into Tx FIFO(Data entry register 0), i am unable to see the content on debugger. I am skeptical whether the data has been loaded or not. Any suggestions to check this?
However i am considering to check the SPI lines at channel level with a logic analyser.

Spi_Regs->Bacon_Entry_Reg = (0 << 28/*CS*/)|(0 << 21/*MSB*/)|(1 << 0/*LAST*/)|(7 << 23/*DL*/);
uint32 buf = 0xCC;
Spi_Regs->Data_Entry_Reg0 = buf;
uint32 buf_1=0x00;
buf_1 = *(uint32*) 0xF0001D90;

Thanks in advance!!!
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3 Replies
MoD
Employee
Employee
50 likes received 500 replies posted 100 solutions authored
You can't read the TX FIFO. The DATAENTRY register is a write only register. If yiu read the RXEXIT register then you get the next available value from the receive FIFO if there is anything available.
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Almex
Level 1
Level 1
First reply posted Welcome!
  1. TC234 Controller: The TC234 Controller, a part of the automotive electronics architecture, features QSPI (Quad Serial Peripheral Interface) functionality for efficient communication between the microcontroller and external devices.

  2. QSPI TxFIFO: In the TC234 Controller, the QSPI TxFIFO (Transmit First-In-First-Out) serves as a buffer for outgoing data, optimizing data transmission and ensuring a smooth flow of information.

  3. Data Transmission Efficiency: The QSPI TxFIFO in the TC234 Controller enhances the efficiency of data transmission by allowing data to be loaded into the FIFO before it is sent out, minimizing delays in the communication process.

  4. Buffering Mechanism: With the FIFO mechanism, the QSPI TxFIFO acts as a buffer that temporarily stores data, allowing the TC234 Controller to manage and prioritize the transmission of information seamlessly.

  5. Enhanced Throughput: The QSPI TxFIFO contributes to increased throughput by facilitating a continuous stream of data transmission, especially beneficial in applications where real-time and high-speed communication is crucial.

  6. AAAD Integration: In the context of automotive electronics, the TC234 Controller's QSPI TxFIFO functionality can potentially be leveraged by applications like Android Auto Apps Downloader AAAD, ensuring efficient data transfer between the controller and external automotive systems.

  7. Optimizing Communication: When integrated with AAAD or similar applications, the QSPI TxFIFO in the TC234 Controller plays a role in optimizing the communication between the controller and external devices, contributing to a smoother user experience.

  8. Overall Integration: Understanding the QSPI TxFIFO functionality in the TC234 Controller is essential for developers working on applications like AAAD, as it aids in harnessing the full potential of data transmission capabilities within the automotive electronics ecosystem.

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bmpearllemon
Level 1
Level 1
First reply posted Welcome!

Great insights on the QSPI TxFIFO with the TC234. As a Workday consultant, I find the systematic approach here quite similar to solving complex system issues. Anyone else see these parallels?

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