발사XL-F280049C:How to communicate ? in Firmware : boostxl_afe031_f28004x_dacmode

Hi Jungho,

In the image you sent over, the GPIO10 and GPIO11 are configured as input signals, not output signals. They are simply reading the state of the test jumpers on the board, somewhere in the update loop / initialization, they are used to set the Test/Tx mode of the board

Regards,

Peter

SPI 통신 신호는 어떤 핀에서 나오는 것인가?

GPIO 설정함수가 너무 많은데 특정지을 수 가 없다.

SCLK 에 High signal을 보내면 통신 신호가 나오는지?

What pin does the SPI communication signal come from?

There are too many GPIO configuration functions, so I can't specify one.

If I send a high signal to SCLK, does the communication signal come out?

Hi Jungho,

You may find the SPI configuration in the hal_spi.c file. 

Pasting the relevant section of the configuration below

void InitAFESpiGpio()
{
    EALLOW;

    // SPI_MOSI
    GPIO_SetupPinOptions(16, GPIO_INPUT, GPIO_ASYNC | GPIO_PULLUP);
    // SPI_MISO
    GPIO_SetupPinOptions(17, GPIO_INPUT, GPIO_ASYNC | GPIO_PULLUP);
    // SPI_CS
    GPIO_SetupPinOptions(57, GPIO_INPUT, GPIO_ASYNC | GPIO_PULLUP);
    // SPI_CLK
    GPIO_SetupPinOptions(56, GPIO_INPUT, GPIO_ASYNC | GPIO_PULLUP);

    GPIO_SetupPinMux(16, GPIO_MUX_CPU1, 1);
    GPIO_SetupPinMux(17, GPIO_MUX_CPU1, 1);
    GPIO_SetupPinMux(57, GPIO_MUX_CPU1, 1);
    GPIO_SetupPinMux(56, GPIO_MUX_CPU1, 1);

    EDIS;
}

In this example, the SPI FIFO is used to control the output of the SPI pins. The messages to the AFE should be directly written to the FIFO and the SPI module itself will handle the message transmission. There are some example waveforms in the boostxl user guide 

https://www.ti.com/lit/ug/sbou223/sbou223.pdf

Regards

Peter

보니까 AFE031의 경우 PWM 보다는 DAC가 노이즈가 적어서 DAC로 PLC 송신신호를 출력하는 것으로 보이는데,

그전에 SPI 통신으로 AFE031에 송신신호를 보낸다는 것인가? SPI 통신 데이터 신호는 레지스터 설정만으로 끝인가?

In the case of AFE031, it appears that the PLC transmission signal is output through the DAC because the DAC has less noise than the PWM.

Before that, do you mean to send a transmission signal to AFE031 through SPI communication? Is the SPI communication DATA signal just a register setting?

위의 AFE031 데이터시트를 보면 TX_FLAG 와 RX_FLAG를 사용해야 하는 것처럼 보인다. (AFE031의 47번,48번 핀)

AFE031 데이터시트의 44페이지를 보더라도 TMS320F28x MCU GPIO 핀과 연결되어있으며, 이것에 대한 연결을 해봐야 한다고 생각한다.

현재 사용하는보드는 LAUNCH-F280049C 보드이며,

사용 펌웨어는 dacmode 이다.

이 펌웨어에서 47번 ,48번에 연결하는 핀으로 보이는 핀은 아래 코드처럼 F280049C의 GPIO10(93번), GPIO0(79번) 번 핀이라고 보인다.

위 코드사진을 올린 이유는 그런 내용을 파악하기가 어려워서 올린 것이다.

다시한번 검토하고 회신주기 바란다.

Looking at the AFE031 datasheet above, it looks like TX_FLAG and RX_FLAG should be used. (Pins 47 and 48 of AFE031)

If you look at page 44 of the AFE031 datasheet, it is connected to the TMS320F28x MCU GPIO pin, and I think you need to connect to this.

The board currently used is the LAUNCH-F280049C board.



The firmware used is dacmode.

The pins that appear to be connected to numbers 47 and 48 in this firmware appear to be pins GPIO10 (#93) and GPIO0 (#79) of F280049C, as shown in the code below.

The reason I uploaded the code photo above was because it was difficult to understand the contents.

Please review again and reply.

Hi Jungho,

I am currently out of office this week for US holiday, please expect a reply next week. Thanks

Regards,

Peter

Hi Jungho,

I think there is miscommunication. Per the software/hardware user guide (https://www.ti.com/lit/ug/sbou223/sbou223.pdf) you can refer to transmitter example on how to send data. Specifically look at the Transmitter Example section. It details that a periodic interrupt is used to write a value from DMA data buffer register to the AFE031 through SPI. Then the AFE031 DAC output modulates the SunSpec output. So you are using the correct code. It may be helpful to initially test adjusting the DMA data buffer and changing some data that is being sent to the AFE031 to see the impact on the DAC output

Regards,

Peter