Thanks for your reply , So which file I have to change. I 'm using TI DVSDK tools. I looked this video tutorial https://www.youtube.com/watch?v=Co85WsgLtto , but I could not find*/sys/kernel/debug/omap_mux *. How to do this.
cheers. 10 Haziran 2015 Çarşamba 12:25:05 UTC+3 tarihinde Roger Quadros yazdı: > > Hi, > > On Wed, 10 Jun 2015 01:28:10 -0700 > Erkan Güzeler <[email protected] <javascript:>> wrote: > > > > > Hi everyone, > > > > I'm using BBxM Rev C2 board and trying to read gpio pins. But I have > some > > trouble about it. I successfully read > > *gpio139/MMC2_DAT7/MMC2_CLKIN/MMC3_DAT3/HSUSB3_TLL_NXT/MM3_RXDM* but > when > > I tried to read > > *GPIO_156/**McBSP1_CLKR/McSPI4_CLK/SIM_CD *or another pin like > *McSPI1_CS0/GPIO_174 > > *I'm not able to success to read pins. > > So I think that pins have different feature so I need to change this. > > > > cd /sys/class/gpio/ > > echo 159 > export > > cd /sys/class/gpio/gpio159 > > echo "in" > direction > > cat value > > > > for GPIO 139 is working but the others always value is ZERO . > > > > > > Has any idea about change pin features... > > You will need to configure the pinmux for GPIO mode. > You could do it in the device tree. > > mcspi1_cs0 is used as hsusb2_data6 so you can't use that as GPIO. > > OMAP3_CORE1_IOPAD(0x21dc, PIN_INPUT_PULLDOWN | MUX_MODE3) /* > mcspi2_cs0.hsusb2_data6 */ > > cheers, > -roger > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
