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pranav083/74hc299_11_10.p

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interface of two 74hc299 in cascade with beaglebone black
Raw
74hc299_11_10.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 500 * 1000
#define ON_DURATION 250 * INS_PER_MS
#define OFF_DURATION 250 * INS_PER_MS
#define CPRUCFG c4
//STORE THE NO. OF TIME INPUT BUTTON TO STORE
#define NUMBER_OF_BITS 8
#define DS0 6 /* P8_3 38 GPIO 1_6 mode 7 */
#define INPUT 7 /* P8_4 39 GPIO 1_7 mode 7 */
#define S0 2 /* P8_5 34 GPIO 1_2 mode 7 */
#define S1 3 /* P8_6 35 GPIO 1_3 mode 7 */
//#define OE1 13 /* P8_11 45 GPIO 1_13 mode 7 */ //s0
//#define OE2 12 /* P8_12 44 GPIO 1_12 mode 7 */ //s1
#define CP 15 /* P8_15 47 GPIO 1_15 mode 7 */
#define DS7 14 /* P8_16 46 GPIO 1_14 mode 7 */
#define CK_LED 31 /* P8_20 63 GPIO 1_31 mode 7 */
///////////////////////////////////////////////////////////
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
// move the no of bits to be store in the memory
MOV r0, NUMBER_OF_BITS
// STORE THE BIT DATA IN THE REGISTER
MOV r6.b0, 0b00000000 // MOVE 0 INITIAL VALUE TO R6.b0
MOV r6.b1, 0b00000000 // MOVE 0 INITIAL VALUE TO R6.b1
MOV r6.b2, 0b00000000 // MOVE 0 INITIAL VALUE TO R6.b2
MOV r6.b3, 0b00000000 // MOVE 0 INITIAL VALUE TO R6.b3
//--------------------------------------------------------------------
//SETTING THE INPUT / OUPUT MODE OF THE PINS
//--------------------------------------------------------------------
//set DS0 pin to ouput
MOV r3, GPIO1 | GPIO_OE
LBBO r2, r3, 0, 4
CLR r2, r2, 6 //DS0
SBBO r2, r3, 0, 4
//set INPUT pin to INPUT
MOV r3, GPIO1 | GPIO_OE
LBBO r2, r3, 0, 4
SET r2, r2, 7 //INPUT
SBBO r2, r3, 0, 4
//set S0 pin to ouput
MOV r3, GPIO1 | GPIO_OE
LBBO r2, r3, 0, 4
CLR r2, r2, 2 //S0 not used now
SBBO r2, r3, 0, 4
//set S1 pin to ouput
MOV r3, GPIO0 | GPIO_OE
LBBO r2, r3, 0, 4
CLR r2, r2, 3 //S1 not used now
SBBO r2, r3, 0, 4
//set OE1 pin to ouput
MOV r3, GPIO1 | GPIO_OE
LBBO r2, r3, 0, 4
CLR r2, r2, 13 //s0
SBBO r2, r3, 0, 4
//set OE2 pin to ouput
MOV r3, GPIO1 | GPIO_OE
LBBO r2, r3, 0, 4
CLR r2, r2, 12 //s1
SBBO r2, r3, 0, 4
//set CP pin to ouput
MOV r3, GPIO0 | GPIO_OE
LBBO r2, r3, 0, 4
CLR r2, r2, 15 //CP NOT USED NOW
SBBO r2, r3, 0, 4
//set DS7 pin to ouput
MOV r3, GPIO1 | GPIO_OE
LBBO r2, r3, 0, 4
CLR r2, r2, 14 //CP
SBBO r2, r3, 0, 4
//set CHECK LED pin to ouput
MOV r3, GPIO1 | GPIO_OE
LBBO r2, r3, 0, 4
CLR r2, r2, 31 //CHECK LED
SBBO r2, r3, 0, 4
//setting the register for data high and GPIO1
MOV r4, GPIO1 | GPIO_CLEARDATAOUT
MOV r5, GPIO1 | GPIO_SETDATAOUT
//-----------------------------------------------------------
//SET THE REGISTER IN THE PARALLEL LOAD MODE
//-----------------------------------------------------------
//////////////////////////////////////////////////////////////////
// PARALLEL LOAD MODE OF THE SHIFT REGISTER
L_LOAD:
////////////////////////////////////////////////////////////////////
// SETTING THE REGISTER TO LOAD MODE
//Setting the value the out pin S0
MOV r2, 1 << 13 //move out pin to
SBBO r2, r5, 0, 4 // the p8_11 pin is HIGH
//Setting the value the out pin S1
MOV r2, 1 << 12 //move out pin to
SBBO r2, r5, 0, 4 // the p8_12 pin is HIGH
////////////////////////////////////////////////////////////////////
//Setting the value the out pin CP
MOV r2, 1 << 14 //move out pin to
SBBO r2, r4, 0, 4 // the p8_16 pin is LOW
//Setting the value the out pin CHECK LED
MOV r2, 1 << 31 //move out pin to
SBBO r2, r5, 0, 4 // the p8_20 pin is HIGH
// SETTING UP THE DELAY
MOV r1, 90000000 // set up for a .9 second delay
// perform a LOOP for delay
L1: SUB r1, r1, 1 // subtract 1 from R1
// SETTING UP THE DELAY
MOV r8, 4 //RUN THE LOOP 9 TIMES
// perform a LOOP for delay
L2: SUB r8, r8, 1 // subtract 1 from R1
QBNE L2, r8, 0 // is R8 == 0? if no, then goto L1
QBNE L1, r1, 0 // is R1 == 0? if no, then goto L1
//Setting the value the out pin CHECK LED
MOV r2, 1 << 31 //move out pin to
SBBO r2, r4, 0, 4 // the p8_20 pin is LOW
//Setting the value the out pin CP
MOV r2, 1 << 14 //move out pin to
SBBO r2, r5, 0, 4 // the p8_16 pin is HIGH
// SETTING UP THE DELAY
MOV r1, 300000 // set up for a .9 second delay
// perform a LOOP for delay
L3: SUB r1, r1, 1 // subtract 1 from R1
QBNE L3, r1, 0 // is R1 == 0? if no, then goto L1
//Setting the value the out pin CP
MOV r2, 1 << 14 //move out pin to
SBBO r2, r4, 0, 4 // the p8_16 pin is LOW
//--------------------------------------------------------------------
//NOW LOAD THE STORE VALUE FROM THE SHIFT REGISTER TO PRU
//--------------------------------------------------------------------
L_LOAD1:
//////////////////////////////////////////////////////////////////////
// SETTING THE REGISTER TO SHIFT RIGHT MODE
//Setting the value the out pin S0
MOV r2, 1 << 13 //move out pin to
SBBO r2, r5, 0, 4 // the p8_11 pin is HIGH
//Setting the value the out pin S1
MOV r2, 1 << 12 //move out pin to
SBBO r2, r4, 0, 4 // the p8_12 pin is LOW
////////////////////////////////////////////////////////////////////////
// move the no of bits to be store in the memory
MOV r0, NUMBER_OF_BITS
//as data is being loaded from shift register s
//Setting the value the out pin DS0
MOV r2, 1 << 6 //move out pin to
SBBO r2, r4, 0, 4 // the p8_3 pin is LOW
BIT_D:
//Setting the value for the out pin
MOV r2, 1 << 31 //move out pin to
SBBO r2, r5, 0, 4 // the p8_20 pin is HIGH
//Setting the value the out pin DS0
MOV r2, 1 << 6 //move out pin to
SBBO r2, r4, 0, 4 // the p8_3 pin is LOW
//Setting the value the out pin CP
MOV r2, 1 << 14 //move out pin to
SBBO r2, r4, 0, 4 // the p8_16 pin is LOW
//set IN pin to INPUT
MOV r3, GPIO1 | GPIO_DATAIN
LBBO r7, r3, 0, 4 // P8_04
MOV r1, 50000000 // set up for a .9 second delay
// perform a half second delay
LL1: SUB r1, r1, 1 // subtract 1 from R1
QBNE LL1, r1, 0 // is R1 == 0? if no, then goto L1
//Setting the value for the out pin
MOV r2, 1 << 31 //move out pin to
SBBO r2, r4, 0, 4 // the p8_20 pin is LOW
QBBS BIT_SET, r7.t7 // if the bit is high, jump to LED_HIGH
QBBC BIT_CLR, r7.t7 // if the bit is low, jump to LED_LOW
// STORE 1 VALUE IN THE REGISTER
BIT_SET:
//PERFORM THE LEFT SHIFT OPERATION ON THE REGISTER R6
LSL r6, r6, 1
ADD r6, r6.b0, 0b00000001
//Setting the value for the out pin
MOV r2, 1 << 31 //move out pin to
SBBO r2, r5, 0, 4 // the p8_20 pin is HIGH
//Setting the value the out pin CP
MOV r7, 1 << 14 //move out pin to
SBBO r7, r5, 0, 4 // the p8_16 pin is HIGH
MOV r1, 20000000 // set up for a .4 second delay
// perform a half second delay
LL2: SUB r1, r1, 1 // subtract 1 from R1
QBNE LL2, r1, 0 // is R1 == 0? if no, then goto L1
SUB r0, r0, 1
QBEQ L_OUT1, r0, 0
QBNE BIT_D, r0, 0
//STORE 0 VALUE IN THE REGISTER
BIT_CLR:
//PERFORM THE LEFT SHIFT OPERATION ON THE REGISTER R6
LSL r6, r6, 1
//Setting the value the out pin CP
MOV r2, 1 << 14 //move out pin to
SBBO r2, r5, 0, 4 // the p8_16 pin is HIGH
MOV r1, 20000000 // set up for a half second delay
// perform a half second delay
LL3: SUB r1, r1, 1 // subtract 1 from R1
QBNE LL3, r1, 0 // is R1 == 0? if no, then goto L1
SUB r0, r0, 1
QBEQ L_OUT1, r0, 0
QBNE BIT_D, r0, 0
//--------------------------------------------------------------------
//THE DATA GET LOADED TO THE REGISTER R6
//--------------------------------------------------------------------
//--------------------------------------------------------------------
//OUTPUT OF THE STORE VALUE REFLECTTO THE FIRST SHIFT REGISTER
//--------------------------------------------------------------------
L_OUT1:
// THE MODE OF 74HC299 FROM LOAD TO SHIFT RIGHT MODE
//////////////////////////////////////////////////////////////////
// do nothing in THE INPUT SHIFT REGISTER
//Setting the value the out pin S0
MOV r2, 1 << 13 //move out pin to
SBBO r2, r5, 0, 4 // the p8_5 pin is HIGH
//Setting the value the out pin S1
MOV r2, 1 << 12 //move out pin to
SBBO r2, r4, 0, 4 // the p8_6 pin is LOW
////////////////////////////////////////////////////////////
//Setting the value the out pin CP
MOV r2, 1 << 14 //move out pin to
SBBO r2, r4, 0, 4 // the p8_16 pin is LOW
// move the no of bits to be store in the memory
MOV r0, NUMBER_OF_BITS
//Setting the value the out pin CHECK LED
MOV r2, 1 << 31 //move out pin to
SBBO r2, r5, 0, 4 // the p8_20 pin is HIGH
// SETTING UP THE DELAY
MOV r1, 90000000 // set up for a .9 second delay
// perform a LOOP for delay
LLL1: SUB r1, r1, 1 // subtract 1 from R1
// SETTING UP THE DELAY
MOV r8, 9 //RUN THE LOOP 9 TIMES
// perform a LOOP for delay
LLL2: SUB r8, r8, 1 // subtract 1 from R1
QBNE LLL2, r8, 0 // is R8 == 0? if no, then goto L1
QBNE LLL1, r1, 0 // is R1 == 0? if no, then goto L1
L_OUT2:
// NOW THE DATA STORE IN THE REGISTER IS MADE TO THE DATA PIN OF THE SHIFT REGISTER R6
//Setting the value the out pin DS0
MOV r2, 1 << 6 //move out pin to
SBBO r2, r4, 0, 4 // the p8_3 pin is LOW
// SETTING UP THE DELAY
MOV r1, OFF_DURATION // set up for the delay
// perform a LOOP for delay
LLL3: SUB r1, r1, 1 // subtract 1 from R1
QBNE LLL3, r1, 0 // is R1 == 0? if no, then goto L1
//Setting the value the out pin CHECK LED
MOV r2, 1 << 31 //move out pin to
SBBO r2, r4, 0, 4 // the p8_20 pin is LOW
//Setting the value the out pin CP
MOV r2, 1 << 14 //move out pin to
SBBO r2, r4, 0, 4 // the p8_16 pin is LOW
//CHECK FOR THE SET BIT AND CLEAR BIT ON THE PIN
QBBS DATA_SET, r6.t7 // if the bit is high, jump to BIT_HIGH
QBBC DATA_CLR, r6.t7 // if the bit is low, jump to BIT_LOW
DATA_SET:
//Setting the value the out pin DS0
MOV r2, 1 << 6 //move out pin to
SBBO r2, r5, 0, 4 // the p8_3 pin is HIGH
// SETTING UP THE DELAY
MOV r1, ON_DURATION // set up for the delay
// perform a LOOP for delay
LLL4: SUB r1, r1, 1 // subtract 1 from R1
QBNE LLL4, r1, 0 // is R1 == 0? if no, then goto L1
//Setting the value the out pin CHECK LED
MOV r2, 1 << 31 //move out pin to
SBBO r2, r4, 0, 4 // the p8_20 pin is LOW
//Setting the value the out pin CP
MOV r2, 1 << 14 //move out pin to
SBBO r2, r5, 0, 4 // the p8_16 pin is HIGH
//shift the bit store in the r6 to the RIGHT
LSL r6, r6, 1
// decrement the value of bits to be store and check its value
SUB r0, r0, 1
QBEQ OUT, r0, 0
QBNE L_OUT2, r0, 0
DATA_CLR:
//Setting the value the out pin DS0
MOV r2, 1 << 6 //move out pin to
SBBO r2, r4, 0, 4 // the p8_3 pin is LOW
// SETTING UP THE DELAY
MOV r1, OFF_DURATION // set up for the delay
// perform a LOOP for delay
LLL5: SUB r1, r1, 1 // subtract 1 from R1
QBNE LLL5, r1, 0 // is R1 == 0? if no, then goto L1
//Setting the value the out pin CHECK LED
MOV r2, 1 << 31 //move out pin to
SBBO r2, r4, 0, 4 // the p8_20 pin is LOW
//Setting the value the out pin CP
MOV r2, 1 << 14 //move out pin to
SBBO r2, r5, 0, 4 // the p8_16 pin is HIGH
//shift the bit store in the r6 to the RIGHT
LSL r6, r6, 1
// decrement the value of bits to be store and check its value
SUB r0, r0, 1
QBEQ OUT, r0, 0
QBNE L_OUT2, r0, 0
// THIS IS THE HALT OF THE PROGRAM WITH SUSSESSFUL INDICATION SHOWS BLINKING OF LIGHT AT P8_20 PIN
OUT:
// SETTING UP THE DELAY
MOV r1, 1000000 // set up for a .9 second delay
// perform a LOOP for delay
LLLL: SUB r1, r1, 1 // subtract 1 from R1
QBNE LLLL, r1, 0 // is R1 == 0? if no, then goto L1
//Setting the value the out pin CHECK LED
MOV r2, 1 << 14 //move out pin to
SBBO r2, r4, 0, 4 // the p8_16 pin is LOW
//Setting the value the out pin DS0
MOV r2, 1 << 6 //move out pin to
SBBO r2, r4, 0, 4 // the p8_3 pin is LOW
//Setting the value the out pin CHECK LED
MOV r2, 1 << 31 //move out pin to
SBBO r2, r5, 0, 4 // the p8_20 pin is HIGH
HALT
Raw
PRU-GPIO-EXAMPLE2.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= <
0x034 0x06 /* p8_11 45 gpio1_13 in pu mode6 */
0x030 0x06 /* p8_12 44 gpio1_12 in pd mode6 */
/* 0x024 0x07 /* p8_13 23 gpio0_23 op pd mode7 */
/* 0x03c 0x07 /* p8_15 47 gpio1_15 op pd mode7 */
/* 0x038 0x07 /* p8_16 46 gpio1_14 op pd mode7 */
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";
};
};
};
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