Motor Control Pulse Width Modulator (MCPWM)
Does ESP32 support using the MCPWM Timer to trigger AD sampling?
AD sampling can be triggered in the callback of the MCPWM timer events
on_ful`,on_empty,on_stop. Additionally, AD sampling can also be triggered in the callback of the MCPWM comparator eventon_reach.
Can ESP32-S3 generate fully complementary PWM with accurate clock and duty cycle and adjustable dead band?
By measurement, ESP32-S3 can generate complementary output waveforms with the frequency of 10 k, the duty cycle accuracy of 1 us and the dead band accuracy of 100 ns by MCPWM.
Does the ESP32-S3 support driving eight servos?
Yes. As ESP32-S3 supports two MCPWM controllers, which includes three operators each, and each operator has two generators and two comparators. So, if each generator independently uses a comparator, it can produce a total of 2*3*2=12 PWM outputs with independently adjustable duty cycles, which can naturally meet the needs of eight servos.
What are the advantages of MCPWM compared to LEDC?
MCPWM supports complementary PWM output, center alignment, dead time insertion, carrier modulation, fault, capture events, etc., which are more advantageous in digital motor control, digital power supply, and FOC scenarios.