pranav083/P8_12.P

## device_tree.dts

/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",
                "P8.13",
                "P8.15",
                "P8.16",
        //      "P8.20",
        //      "P8.21",
        //      "P9.27",
                "pru0";
        //      "P9.12",
        //      "P9.24",
        //      "pru1";


    // pinmux
    fragment@0 {
        target = <&am33xx_pinmux>;
        __overlay__ {
            pinctrl_test: PRU-GPIO-EXAMPLE2-pins{
                pinctrl-single,pins= <
                        0x018 0x07 /* p8_6  38  gpio1_6 op pd mode7 */
                        0x01c 0x27 /* p8_7  39  gpio1_7 in pd mode7 */
                        0x034 0x07 /* p8_11 45  gpio1_13 in pd mode7 */
                        0x030 0x07 /* p8_12 44  gpio1_12 op pd mode6 */
                        0x024 0x27 /* p8_13 23  gpio0_23 op pd mode6 */
                        0x03c 0x47 /* p8_15 47  gpio1_15 op pd mode7 */
                        0x038 0x27 /* p8_16 46  gpio1_14 in pd mode6 */
                /*      0x084 0x05 /* p8_20 63  gpio1_31 in pd mode5 */
                /*      0x080 0x05 /* p8_21 62  gpio1_30 in pd mode5 */
                /*      0x078 0x0f /* p9_12 60  gpio1_13 op none mode7 */
                /*      0x184 0x27 /* p9_24 15  gpio1_28 in pd mode7 */
                /*      0x1a4 0x25 /* p9_27 115  gpio3_19 in pd 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";
        };
    };

};

## P8_12.P
.origin 0
.entrypoint START


#define GPIO0 0x44E07000
#define GPIO1 0x4804C000
#define GPIO2 0x481AC000
#define GPIO3 0x481AE000

#define GPIO_OE 0x134
#define GPIO_DATAIN 0x138
#define GPIO_CLEARDATAOUT 0x190
#define GPIO_SETDATAOUT 0x194

#define INS_PER_MS    200 * 1000
#define ON_DURATION   250 * INS_PER_MS
#define OFF_DURATION  250 * INS_PER_MS

// set up a value that has a 1 in bit 24. We will later use this to toggle the state of LED3
#define GPIO1_LED3BIT 1<<24

#define BUTTON  14 /* P8_16 46 GPIO 1_14 mode 7 */
#define BULB    12 /* P8_12 44 GPIO 1_12 mode 7 */

#define CPRUCFG  c4

        // this label is where the code execution starts
START:
        // Enable the OCP master port,

  	     lbco r0, CPRUCFG, 4, 4   // read SYSCFG
  		 clr  r0.t4               // clear SYSCFG[STANDBY_INIT]
  		 sbco r0, CPRUCFG, 4, 4   // enable OCP master port;

		//set OUT pin to ouput
		MOV r3, GPIO1 | GPIO_OE
		LBBO r2, r3, 0, 4
		CLR r2, r2, 12   // setting as a output pin
		SBBO r2, r3, 0, 4


		//set OUT pin to ouput
		MOV r3, GPIO1 | GPIO_OE
		LBBO r2, r3, 0, 4
		SET r2, r2, 14   // setting as a output pin
		SBBO r2, r3, 0, 4

		//set IN pin to INPUT
		MOV  r3, GPIO1 | GPIO_DATAIN
		LBBO r2, r3, 0, 4

		//setting the register for data high and low for GPIO0
		MOV r5, GPIO1 | GPIO_SETDATAOUT
		MOV r4, GPIO1 | GPIO_CLEARDATAOUT
L1:
		//set IN pin to INPUT
		MOV  r3, GPIO1 | GPIO_DATAIN
		LBBO r2, r3, 0, 4

        // Now monitor the state of R31 bit 14, this corresponds to header 8 pin 16
        QBBS      LED_HIGH, r2.t14         // if the bit is high, jump to LED_HIGH
        QBBC      LED_LOW, r2.t14          // if the bit is low, jump to LED_LOW
        JMP       L1                        // we should never get here unless the bit
                                            // changes between tests

LED_HIGH:
		//Setting the value for the out pin
		MOV  r2, 1 << 12  //move out pin to
		SBBO r2, r4, 0, 4   // the p8_12 pin is low

        JMP  L1                             // test again

LED_LOW:
		//Setting the value for the out pin
		MOV  r2, 1 << 12  //move out pin to
		SBBO r2, r5, 0, 4   // the p8_12 pin is HIGH

        JMP       L1                        // test again

	/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",
	"P8.13",
	"P8.15",
	"P8.16",
	// "P8.20",
	// "P8.21",
	// "P9.27",
	"pru0";
	// "P9.12",
	// "P9.24",
	// "pru1";


	// pinmux
	fragment@0 {
	target = <&am33xx_pinmux>;
	__overlay__ {
	pinctrl_test: PRU-GPIO-EXAMPLE2-pins{
	pinctrl-single,pins= <
	0x018 0x07 /* p8_6 38 gpio1_6 op pd mode7 */
	0x01c 0x27 /* p8_7 39 gpio1_7 in pd mode7 */
	0x034 0x07 /* p8_11 45 gpio1_13 in pd mode7 */
	0x030 0x07 /* p8_12 44 gpio1_12 op pd mode6 */
	0x024 0x27 /* p8_13 23 gpio0_23 op pd mode6 */
	0x03c 0x47 /* p8_15 47 gpio1_15 op pd mode7 */
	0x038 0x27 /* p8_16 46 gpio1_14 in pd mode6 */
	/* 0x084 0x05 /* p8_20 63 gpio1_31 in pd mode5 */
	/* 0x080 0x05 /* p8_21 62 gpio1_30 in pd mode5 */
	/* 0x078 0x0f /* p9_12 60 gpio1_13 op none mode7 */
	/* 0x184 0x27 /* p9_24 15 gpio1_28 in pd mode7 */
	/* 0x1a4 0x25 /* p9_27 115 gpio3_19 in pd 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";
	};
	};

	};
	.origin 0
	.entrypoint START


	#define GPIO0 0x44E07000
	#define GPIO1 0x4804C000
	#define GPIO2 0x481AC000
	#define GPIO3 0x481AE000

	#define GPIO_OE 0x134
	#define GPIO_DATAIN 0x138
	#define GPIO_CLEARDATAOUT 0x190
	#define GPIO_SETDATAOUT 0x194

	#define INS_PER_MS 200 * 1000
	#define ON_DURATION 250 * INS_PER_MS
	#define OFF_DURATION 250 * INS_PER_MS

	// set up a value that has a 1 in bit 24. We will later use this to toggle the state of LED3
	#define GPIO1_LED3BIT 1<<24

	#define BUTTON 14 /* P8_16 46 GPIO 1_14 mode 7 */
	#define BULB 12 /* P8_12 44 GPIO 1_12 mode 7 */

	#define CPRUCFG c4

	// this label is where the code execution starts
	START:
	// Enable the OCP master port,

	lbco r0, CPRUCFG, 4, 4 // read SYSCFG
	clr r0.t4 // clear SYSCFG[STANDBY_INIT]
	sbco r0, CPRUCFG, 4, 4 // enable OCP master port;

	//set OUT pin to ouput
	MOV r3, GPIO1 \| GPIO_OE
	LBBO r2, r3, 0, 4
	CLR r2, r2, 12 // setting as a output pin
	SBBO r2, r3, 0, 4


	//set OUT pin to ouput
	MOV r3, GPIO1 \| GPIO_OE
	LBBO r2, r3, 0, 4
	SET r2, r2, 14 // setting as a output pin
	SBBO r2, r3, 0, 4

	//set IN pin to INPUT
	MOV r3, GPIO1 \| GPIO_DATAIN
	LBBO r2, r3, 0, 4

	//setting the register for data high and low for GPIO0
	MOV r5, GPIO1 \| GPIO_SETDATAOUT
	MOV r4, GPIO1 \| GPIO_CLEARDATAOUT
	L1:
	//set IN pin to INPUT
	MOV r3, GPIO1 \| GPIO_DATAIN
	LBBO r2, r3, 0, 4

	// Now monitor the state of R31 bit 14, this corresponds to header 8 pin 16
	QBBS LED_HIGH, r2.t14 // if the bit is high, jump to LED_HIGH
	QBBC LED_LOW, r2.t14 // if the bit is low, jump to LED_LOW
	JMP L1 // we should never get here unless the bit
	// changes between tests

	LED_HIGH:
	//Setting the value for the out pin
	MOV r2, 1 << 12 //move out pin to
	SBBO r2, r4, 0, 4 // the p8_12 pin is low

	JMP L1 // test again

	LED_LOW:
	//Setting the value for the out pin
	MOV r2, 1 << 12 //move out pin to
	SBBO r2, r5, 0, 4 // the p8_12 pin is HIGH

	JMP L1 // test again