--LED1-GPIO5-index1
--LED2-GPIO4-index2
--LED3-GPIO2-index4
--R-GPIO13-index7
--G-GPIO14-index5
--B-GPIO15-index8
--初始化LED
gpio.mode(1,gpio.OUTPUT)
gpio.mode(2,gpio.OUTPUT)
gpio.mode(4,gpio.OUTPUT)

gpio.write(1,gpio.LOW)
gpio.write(2,gpio.LOW)
gpio.write(4,gpio.LOW)

--初始化RGB
gpio.mode(7,gpio.OUTPUT)
gpio.mode(5,gpio.OUTPUT)
gpio.mode(8,gpio.OUTPUT)

gpio.write(7,gpio.LOW)
gpio.write(5,gpio.LOW)
gpio.write(8,gpio.LOW)

cnt = 0
function setPWM(duty)
    pwm.setup(1,500,duty)
    pwm.setup(2,500,duty)
    pwm.setup(4,500,duty)

    pwm.start(1)
    pwm.start(2)
    pwm.start(4)
end

function stopPWM()
    if(cnt > 1000) then
        pwm.stop(1)
        pwm.stop(2)
        pwm.stop(4)
    else
        setPWM(cnt)
        print("cnt =  "..cnt)
        cnt = cnt + 100
    end
    
end
tmr.alarm(0,2000,tmr.ALARM_AUTO,stopPWM)