Tool/software: Linux
Hi All,
I have enabled the CAN in driver using following commands. I can able to up the driver, I cannot able to transfer and receive data.
I followed this Ti link ===> processors.wiki.ti.com/.../Linux_Core_DCAN_User's_Guide
What am i missing ?
=>canconfig can0 bitrate 50000 ctrlmode triple-sampling on
can0 bitrate: 50000, sample-point: 0.875
can0 ctrlmode: loopback[OFF], listen-only[OFF], tripple-sampling[ON],one-shot[OFF], berr-reporting[OFF]
=>canconfig can0 start
[ 80.111516] c_can_platform 481cc000.can can0: setting BTR=0500 BRPE=0001
can0 state: ERROR-ACTIVE
=>ifconfig
can0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
UP RUNNING NOARP MTU:16 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:10
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Interrupt:165
Here my dts file with respect to dcan0,
dcan0_pins_default: dcan0_pins_default {
pinctrl-single,pins = <
AM33XX_IOPAD(0x978, PIN_OUTPUT | MUX_MODE2) /* d_can1_tx: CANA_TXD */
AM33XX_IOPAD(0x97C, PIN_INPUT_PULLDOWN | MUX_MODE2) /* d_can1_rx: CANA_RXD */
AM33XX_IOPAD(0x83C, PIN_OUTPUT_PULLUP | MUX_MODE7 ) /* (U13) gpio1[15]: CANA_EN */
AM33XX_IOPAD(0x8A0, PIN_OUTPUT_PULLDOWN | MUX_MODE7 ) /* (R1) gpio2[6]: CANA_SLOPE */
AM33XX_IOPAD(0x8D8, PIN_OUTPUT_PULLDOWN | MUX_MODE7 ) /* (V4) gpio0[10]: CANA_TERM */
>;
};
AM33XX_IOPAD(0x9E4, PIN_OUTPUT_PULLUP | MUX_MODE7 ) /* (C14) gpio3[7]: CAN_POWER_ENABLE*/
I m exporing the gpios with respect to dcan0, as mentioned below
echo 1 > /sys/class/gpio/gpio47/value [CANA_EN]
echo 0 > /sys/class/gpio/gpio70/value [CANA_SLOPE]
echo 1 > /sys/class/gpio/gpio10/value [CANA_TERM]
echo 1 > /sys/class/gpio/gpio103/value [CANA_POWER_EN]
I m using BUSMASTER and PCAN to view the transferred data. Its showing errors. No packets are transmitting.
Command : cansend can0 -i 0x10 0x11 0x22 0x33 0x44 0x55 0x66 0x77 0x88
Can anyone help me to resolve this issue ?
