SPRUJ17I March 2022 – August 2025 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
In this example, the eCAP module is configured to operate as a PWM generator. Here a very simple single channel PWM waveform is generated from output pin APWMn. The PWM polarity is active high, which means that the compare value (CAP2 reg is now a compare register) represents the on-time (high level) of the period. Alternatively, if the APWMPOL bit is configured for active low, then the compare value represents the off-time.
Figure 7-60 PWM Waveform Details of APWM Mode Operation| Register | Bit | Value |
|---|---|---|
| CAP1 | CAP1 | 0x1000 |
| CTRPHS | CTRPHS | 0x0 |
| ECCTL2 | CAP_APWM | EC_APWM_MODE |
| ECCTL2 | APWMPOL | EC_ACTV_HI |
| ECCTL2 | SYNCI_EN | EC_DISABLE |
| ECCTL2 | SYNCO_SEL | EC_SYNCO_DIS |
| ECCTL2 | TSCTRSTOP | EC_RUN |