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Original question:

LAUNCHXL-F280025C: Could not read one byte throught PMbus

TMS320F280025: Some question about F280025

Gabriel Wang1
Genius 3825 points
Part Number: TMS320F280025
Other Parts Discussed in Thread: TMDSCNCD280025C

Dear Expert

We use the TMDSCNCD280025C EVM.

1,280025 DAC is used in the comparator, does the DAC function have a separate pin output? For example, if I want to send a sine wave, an analog sine wave can come out from the DAC pin;

2, In the development of the development board, the register version, control the development board of the two LED lights, configure GPIO31 and GPIO34, put these two configurations in front of the void setup1GPIO(void) function, for example, after the configuration of GPIO6 (as shown below), GPIO31 can be flipped normally. GPIO34 does not work properly; Void setup1GPIO(void) : void setup1GPIO(void) : void setup1GPIO(void) : void setup1GPIO(void) : void setup1GPIO(void) : void setup1GPIO(void) : void setup1GPIO

3. Control LED1 and LED2 with the GPIO routine of 280025 library function version. Only the LED lamp corresponding to GPIO31 works, but the LED lamp corresponding to GPIO34 does not work.

  • 0
    TI__Mastermind 28275 points

    Hi Gabriel,

    Gabriel Wang1 said:
    1,280025 DAC is used in the comparator, does the DAC function have a separate pin output? For example, if I want to send a sine wave, an analog sine wave can come out from the DAC pin;

    Unfortunately no. The CMPSS DAC does not come out on a pin.

    Gabriel Wang1 said:
    3. Control LED1 and LED2 with the GPIO routine of 280025 library function version. Only the LED lamp corresponding to GPIO31 works, but the LED lamp corresponding to GPIO34 does not work.

    Can you confirm that both GPBMUX1 and GPBMUX2 of GPIO34 are set to 0? I would recommend you use the driverlib GPIO configuration functions to setup the GPIOs.