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pru pinmux not working
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| debian@beaglebone:~$ sudo vim /lib/firmware/PRU-GPIO-EXAMPLE2.dts | |
| debian@beaglebone:~$ sudo dtc -O dtb -o /lib/firmware/PRU-GPIO-EXAMPLE2.dtbo -b 0 -@ /lib/firmware/PRU-GPIO-EXAMPLE2.dts | |
| debian@beaglebone:~$ sudo reboot | |
| debian@beaglebone:~/pru_work/pru$ vim p8_12.p | |
| debian@beaglebone:~$ cd pru_work/pru | |
| ------ after changing the pru.cpp file by putting .bin destination of program p8_12.bin------- | |
| debian@beaglebone:~/pru_work/pru$ sudo pasm -b p8_12.p debian@beaglebone:~/pru_work/pru$ sudo arm-linux-gnueabihf-g++ pru.cpp prussdrv.c -o p8_12_out -w | |
| debian@beaglebone:~/pru_work/pru$ sudo ./p8_12_out | |
| --------------------------------- | |
| but it is not reflecting any change pin p8_12 in mode 6 as refernce from http://pinmux.tking.org/index.html and from dev.ti.com |
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| .origin 0 | |
| .entrypoint start | |
| #define INS_PER_MS 200 * 1000 | |
| #define ON_DURATION 550 * INS_PER_MS | |
| #define OFF_DURATION 550 * INS_PER_MS | |
| start: | |
| lbco r0, CPRUCFG, 4, 4 // read SYSCFG | |
| clr r0.t4 // clear SYSCFG[STANDBY_INIT] | |
| sbco r0, CPRUCFG, 4, 4 // enable OCP master port; | |
| MOV r0, ON_DURATION | |
| DELAY_ON:SUB r0, r0, 1 | |
| QBNE DELAY_ON, r0, 0 | |
| // try EGPIO | |
| SET r30, r30, 14 //p8_12 pin | |
| MOV r0, OFF_DURATION | |
| DELAY_OFF:SUB r0, r0, 1 | |
| QBNE DELAY_OFF, r0, 0 | |
| // try EGPIO | |
| CLR r30, r30, 14 //p8_12 pin | |
| MOV r0, ON_DURATION | |
| QBA DELAY_ON |
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| /dts-v1/; | |
| /plugin/; | |
| / { | |
| compatible = "ti,beaglebone", "ti,beaglebone-black", "ti,beaglebone-green"; | |
| // identification | |
| part-number = "PRU-GPIO-EXAMPLE2"; | |
| version = "00A0"; | |
| // resources | |
| exclusive-use = | |
| "P8.11", | |
| "P8.12", | |
| "P8.20", | |
| "P8.21", | |
| "pru0"; | |
| // pinmux | |
| fragment@0 { | |
| target = <&am33xx_pinmux>; | |
| __overlay__ { | |
| pinctrl_test: PRU-GPIO-EXAMPLE2-pins{ | |
| pinctrl-single,pins= < | |
| AM33XX_IOPAD(0x900, PIN_OUTPUT | MUX_MODE5) /* (G19) mmc0_clk.pr1_pru0_pru_r30[12] */ | |
| AM33XX_IOPAD(0x904, PIN_OUTPUT | MUX_MODE5) /* (G17) mmc0_cmd.pr1_pru0_pru_r30[13] */ | |
| AM33XX_IOPAD(0x830, PIN_OUTPUT | MUX_MODE6) /* (U13) gpmc_ad12.pr1_pru0_pru_r30[14] */ | |
| AM33XX_IOPAD(0x834, PIN_OUTPUT | MUX_MODE6) /* (T13) gpmc_ad13.pr1_pru0_pru_r30[15] */ | |
| >; | |
| }; | |
| }; | |
| }; | |
| // PRU | |
| fragment@1 { | |
| target = <&ocp>; | |
| __overlay__ { | |
| test_helper: helper { | |
| compatible = "bone-pinmux-helper"; | |
| status = "okay"; | |
| pinctrl-names = "default", "gpio"; | |
| pinctrl-0 = <&pinctrl_test>; | |
| }; | |
| }; | |
| }; | |
| fragment@2 { | |
| target = <&pruss>; | |
| __overlay__ { | |
| status = "okay"; | |
| }; | |
| }; | |
| }; | |
| ----------------------------------------------------------- | |
| -------------------------ERROR------------------------ | |
| debian@beaglebone:~$ sudo dtc -O dtb -o /lib/firmware/PRU-GPIO-EXAMPLE2.dtbo -b 0 -@ /lib/firmware/PRU-GPIO-EXAMPLE2.dts | |
| Error: /lib/firmware/PRU-GPIO-EXAMPLE2.dts:26.8-9 syntax error | |
| FATAL ERROR: Unable to parse input tree | |
| debian@beaglebone:~$ |
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| // this file is without pinmux generated file from dev.ti.com | |
| // pin refernce from http://pinmux.tking.org/p9.html | |
| /dts-v1/; | |
| /plugin/; | |
| / { | |
| compatible = "ti,beaglebone", "ti,beaglebone-black", "ti,beaglebone-green"; | |
| // identification | |
| part-number = "PRU-GPIO-EXAMPLE2"; | |
| version = "00A0"; | |
| // resources | |
| exclusive-use = | |
| "P8.11", | |
| "P8.12", | |
| "P8.20", | |
| "P8.21", | |
| "pru0"; | |
| // pinmux | |
| fragment@0 { | |
| target = <&am33xx_pinmux>; | |
| __overlay__ { | |
| pinctrl_test: PRU-GPIO-EXAMPLE2-pins{ | |
| pinctrl-single,pins= < | |
| /* 0x034 0x06 /* p8_11 45 gpio1_13 in no pull mode6 */ | |
| /* 0x030 0x06 /* p8_12 44 gpio1_12 in no pull mode6 */ | |
| /* 0x084 0x05 /* p8_20 63 gpio1_31 in no pull mode5 */ | |
| /* 0x080 0x05 /* p8_21 62 gpio1_30 in no pull mode5 */ | |
| /* OUTPUT GPIO(mode7) 0x07 pulldown, 0x17 pullup, 0x?f no pullup/down */ | |
| /* INPUT GPIO(mode7) 0x27 pulldown, 0x37 pullup, 0x?f no pullup/down */ | |
| >; | |
| }; | |
| }; | |
| }; | |
| // PRU | |
| fragment@1 { | |
| target = <&ocp>; | |
| __overlay__ { | |
| test_helper: helper { | |
| compatible = "bone-pinmux-helper"; | |
| status = "okay"; | |
| pinctrl-names = "default", "gpio"; | |
| pinctrl-0 = <&pinctrl_test>; | |
| }; | |
| }; | |
| }; | |
| fragment@2 { | |
| target = <&pruss>; | |
| __overlay__ { | |
| status = "okay"; | |
| }; | |
| }; | |
| }; | |
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