Hi Ti
I setup the pinconfig and gpio registers as the FAQ for linux SDK7.3.
I see the register values look correct as per the Manual. But Probing on board does not given the expected voltage.
Also on linux read value is 0. I am sharing the script i use for testing.
Can you please review the same and let me know what additional setting is needed.
Best regards
Amit
Register values i read are:
Memory mapped at address 0xffff8b760000.
Read at address 0x00600088 (0xffff8b760088): 0xFFDFFFBB
/dev/mem opened.
Memory mapped at address 0xffff8e4d0000.
Read at address 0x0060008C (0xffff8e4d008c): 0x00000044
#!/bin/bash # Enable signal for Fan power supply echo "" echo "set PIN W27 - PADCONFIG103 - Muxmode to GPIO102" #devmem2 0x11C19C l 0x60007 devmem2 0x11C19C l 0x8010037 echo "set GPIO0_102 DO_FAN_PWR_EN to High" echo 402 > /sys/class/gpio/export usleep 1000 echo out > /sys/class/gpio/gpio402/direction usleep 1000 echo 1 > /sys/class/gpio/gpio402/value # Need GPIO 102 Direction 67 = 0x00 # Read 0x600088h #devmem2 0x600088 # Need GPIO 102 Data = 0x40 # Read 0x60008Ch #devmem2 0x60008C # PWM signal for enabling speed echo "set PIN V23 - PADCONFIG99 - Muxmode to (7) GPIO or (6) PWM" #devmem2 0x11C18C l 0x00060007 devmem2 0x11C18C l 0x8010037 echo "set GPIO0_98 - DO_EHRPWM3_A to High" echo 398 > /sys/class/gpio/export usleep 1000 echo out > /sys/class/gpio/gpio398/direction usleep 1000 echo 1 > /sys/class/gpio/gpio398/value echo -n "GPIO 102 =" cat /sys/class/gpio/gpio402/value echo -n "GPIO 98 =" cat /sys/class/gpio/gpio398/value # Need GPIO 98 Direction = 0x00 # Need GPIO 98 Data = 0x04 devmem2 0x600088 devmem2 0x60008C
