nRF5340 about pwm

Question

Dear Devzone： 
 I would like to ask about the pwm peripheral: 1. According to the data of 5340, 5340 has 4 pwm channels, but I can't clearly know which IO can provide PWM output, or 5340 has no special pwm output IO, which is all analog pwm output io 2. I want to connect my lamp to 5340dk, is there a corresponding routine under ncs? Preferably related to pwm and lights 3. Where are the relevant materials for the configuration and learning of peripherals on ncs?

Kazi Afroza Sultana · Accepted Answer

Hello, 
 1. According to the data of 5340, 5340 has 4 pwm channels, but I can't clearly know which IO can provide PWM output, or 5340 has no special pwm output IO, which is all analog pwm output io 
 You can use any GPIO for PWM output. Only one peripheral can be assigned to drive a particular GPIO pin at a time. There are some GPIO pins you can avoid which are used for specific peripherals on your board. For example: P0.00 and P0.01 are used for 32 KHz crystal, so if you have 32 KHz crystal, you should avoid these pins for PWM. P0.02 and P0.03 are used for NFC, P0.14, P01.5, P0.17 and P0.18 are used for QSPI, SPIM4, the pins from P0.09 to P0.12 and P1.02 and P1.03 pin for high speed TWI ( https://infocenter.nordicsemi.com/topic/ps_nrf5340/chapters/pin.html?cp=4_0_0_8_0 ). 
 
 2. I want to connect my lamp to 5340dk, is there a corresponding routine under ncs? Preferably related to pwm and lights. 
 You can look at this zephyr samples : //github.com/nrfconnect/sdk-zephyr/tree/main/samples/basic/blinky_pwm 
 3 . Where are the relevant materials for the configuration and learning of peripherals on ncs? 
 You can look at this https://academy.nordicsemi.com/ fundamental course of NCS as a start. 
 Thanks. 
 BR 
 Kazi

nRF5340 about pwm

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