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Can somebody post the sample code on how to setup PWM. LPC documentation is not very clear. Thanks! |
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PWM example?
Started by ●June 1, 2004
Reply by ●June 3, 20042004-06-03
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On the 2129 here is the code that I have written: REG(PWM0_PR)=0x0000; //no prescaler - one cpu clk is one PWM clk REG(PWM0_MCR)=0x0002; //Reset timer counter register on match0 REG(PWM0_PCR)=0x7E00; //enable each individual PWM, single edge REG(PWM0_TCR)=0x000A; //Reset TC counter REG(PWM0_MR0)=0x0400; //set up the PWM period REG(PWM0_LER)|=BIT0; //Latch the value REG(PWM0_MR1)=0x0050; //set up initial PWM duty cycle REG(PWM0_LER)|=BIT1; //latch the value REG(PWM0_MR2)=0x0100; //set up initial PWM duty cycle REG(PWM0_LER)|=BIT2; //latch the value REG(PWM0_MR3)=0x150; //set up initial PWM duty cycle REG(PWM0_LER)|=BIT3; //latch the value REG(PWM0_TCR)=0x0009; //set the TC coutner and enable all PWMs Also, you must turn this functionality on in the system control block, make sure the correct pins are set as outputs and set as PWMs in the pin connect block. Shane. --- In , "volodymyr_tymchyshyn" <volodymyr_tymchyshyn@y...> wrote: > Can somebody post the sample code on how to setup PWM. > LPC documentation is not very clear. > Thanks! |
