TMS320F28379D: F28379 launchpad SPI issue

Fei Pan99

Part Number: TMS320F28379D
Other Parts Discussed in Thread: C2000WARE

Hello All,

I would like to use F28379 launchpad to communication with LTC6811 demo board via SPI. I would like to configure the SPI clock line to be active high when there is no SPI communication.

Here is what I want:

However, here is what I get:

Do you know how to configure SPI clock line to be the one LTC6811 requires?

Thanks

Fei

over 6 years ago

0 Haizhu Li over 6 years ago

Prodigy 140 points

You can take "18.3.6 SPI Clocking Schemes" in TMS320F2837xD Dual-Core Delfino Microcontrollers Technical Reference Manual for a reference, it described how to configure the SPI clock line to be active high when idle.

0 Fei Pan99 over 6 years ago in reply to Haizhu Li

Prodigy 130 points

Hi Haizhu,

Thanks for your reply. I look at SPI clocking schemes in the technical reference manual as you mentioned, but I didn't see anything about how to configure the SPI clock line to be active high when idle. Can you be more specific?

Fei

0 Haizhu Li over 6 years ago in reply to Fei Pan99

Prodigy 140 points

The figure 18-7 described how the four situation of SPI clocking schemes, and for you, you can choose Falling edge with/without delay(depend on your device). In Falling edge mode, SPI clock line is active high when idle.

0 Veena Kamath over 6 years ago in reply to Haizhu Li

TI__Mastermind 32585 points

Hi,

As Haizhu Li mentioned, please refer to the chapter SPI Clocking Schemes (18.3.6).

If you are using C2000ware driverlib, refer to the SPI_TransferProtocol parameter used in SPI_setConfig function

Regards,

veena

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TMS320F28379D: F28379 launchpad SPI issue