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Datasheet/Example Discrepancy? - F28377S PWM1/2

DavidG
Intellectual 290 points

Other Parts Discussed in Thread: CONTROLSUITE

Hi,

I am looking at this datasheet.  I am using an F28377S LaunchPad rev. C with the epwm_updwon_aq_cpu01 controlSUITE example.  The code uses this for EPWM1:

GpioCtrlRegs.GPAPUD.bit.GPIO0 = 1;    // Disable pull-up on GPIO0 (EPWM1A)
GpioCtrlRegs.GPAPUD.bit.GPIO1 = 1;    // Disable pull-up on GPIO1 (EPWM1B) 
GpioCtrlRegs.GPAMUX1.bit.GPIO0 = 1;   // Configure GPIO0 as EPWM1A
GpioCtrlRegs.GPAMUX1.bit.GPIO1 = 1;   

GpioCtrlRegs.GPAPUD.bit.GPIO2 = 1;    // Disable pull-up on GPIO2 (EPWM2A)
GpioCtrlRegs.GPAPUD.bit.GPIO3 = 1;    // Disable pull-up on GPIO3 (EPWM2B)
GpioCtrlRegs.GPAMUX1.bit.GPIO2 = 1;   // Configure GPIO2 as EPWM2A
GpioCtrlRegs.GPAMUX1.bit.GPIO3 = 1;   // Configure GPIO3 as EPWM2B

Page 9 of the aforementioned datasheet says that PWM1 is muxed with GPIO2-3 which according to the code example is EPWM2.  From testing it seems that the EPwm2Regs configuration is working for those pins (J8-80, J8-79).  The datasheet says that these are EPWM1 though and that EPWM2 does not have a pinout.

Is there an issue with the code, the datasheet (it's wrong or I have the wrong one) or my understanding of what's going on?