Peripherals

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Robert Nelson edited this page Oct 4, 2017 · 13 revisions

UART

ttyS0 (getty console by default)
ttyS1 P2_09 = uart1_txd, P2_11 = uart1_rxd

config-pin P2_09 uart
config-pin P2_11 uart

PWM

ehrpwm0A: P1_08 & P1_36 (shared)

config-pin P1_08 pwm
#or
config-pin P1_36 pwm

export ocp=/sys/devices/platform/ocp
echo 0 > ${ocp}/48300000.epwmss/48300200.pwm/pwm/pwmchip*/export
echo 20000 > ${ocp}/48300000.epwmss/48300200.pwm/pwm/pwmchip*/pwm0/period
echo 10000 > ${ocp}/48300000.epwmss/48300200.pwm/pwm/pwmchip*/pwm0/duty_cycle
echo 1 > ${ocp}/48300000.epwmss/48300200.pwm/pwm/pwmchip*/pwm0/enable

ehrpwm0B: P1_10 or P1_33 (shared)

config-pin P1_10 pwm
#or
config-pin P1_33 pwm

export ocp=/sys/devices/platform/ocp
echo 1 > ${ocp}/48300000.epwmss/48300200.pwm/pwm/pwmchip*/export
echo 20000 > ${ocp}/48300000.epwmss/48300200.pwm/pwm/pwmchip*/pwm1/period
echo 10000 > /${ocp}/48300000.epwmss/48300200.pwm/pwm/pwmchip*/pwm1/duty_cycle
echo 1 > ${ocp}/48300000.epwmss/48300200.pwm/pwm/pwmchip*/pwm1/enable

ehrpwm1A: P2_01

config-pin P2_01 pwm

export ocp=/sys/devices/platform/ocp
echo 0 > ${ocp}/48302000.epwmss/48302200.pwm/pwm/pwmchip*/export
echo 20000 > ${ocp}/48302000.epwmss/48302200.pwm/pwm/pwmchip*/pwm0/period
echo 10000 > ${ocp}/48302000.epwmss/48302200.pwm/pwm/pwmchip*/pwm0/duty_cycle
echo 1 > ${ocp}/48302000.epwmss/48302200.pwm/pwm/pwmchip*/pwm0/enable

ehrpwm2B: P2_03

config-pin P2_03 pwm

export ocp=/sys/devices/platform/ocp
echo 1 > ${ocp}/48304000.epwmss/48304200.pwm/pwm/pwmchip*/export
echo 20000 > ${ocp}/48304000.epwmss/48304200.pwm/pwm/pwmchip*/pwm1/period
echo 10000 > ${ocp}/48304000.epwmss/48304200.pwm/pwm/pwmchip*/pwm1/duty_cycle
echo 1 > ${ocp}/48304000.epwmss/48304200.pwm/pwm/pwmchip*/pwm1/enable

CAN

dcan1_rx: P2_09 or P2_25

config-pin P2_09 can
#or
config-pin P2_25 can

dcan1_tx: P2_11 or P2_27

config-pin P2_11 can
#or
config-pin P2_27 can