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November 23, 2018 08:52
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#include <Arduino.h> | |
#define maxWaveform 4 | |
#define maxSamplesNum 120 | |
static int waveformsTable[maxWaveform][maxSamplesNum] = { | |
// Sin wave | |
{ | |
0x7ff, 0x86a, 0x8d5, 0x93f, 0x9a9, 0xa11, 0xa78, 0xadd, 0xb40, 0xba1, | |
0xbff, 0xc5a, 0xcb2, 0xd08, 0xd59, 0xda7, 0xdf1, 0xe36, 0xe77, 0xeb4, | |
0xeec, 0xf1f, 0xf4d, 0xf77, 0xf9a, 0xfb9, 0xfd2, 0xfe5, 0xff3, 0xffc, | |
0xfff, 0xffc, 0xff3, 0xfe5, 0xfd2, 0xfb9, 0xf9a, 0xf77, 0xf4d, 0xf1f, | |
0xeec, 0xeb4, 0xe77, 0xe36, 0xdf1, 0xda7, 0xd59, 0xd08, 0xcb2, 0xc5a, | |
0xbff, 0xba1, 0xb40, 0xadd, 0xa78, 0xa11, 0x9a9, 0x93f, 0x8d5, 0x86a, | |
0x7ff, 0x794, 0x729, 0x6bf, 0x655, 0x5ed, 0x586, 0x521, 0x4be, 0x45d, | |
0x3ff, 0x3a4, 0x34c, 0x2f6, 0x2a5, 0x257, 0x20d, 0x1c8, 0x187, 0x14a, | |
0x112, 0xdf, 0xb1, 0x87, 0x64, 0x45, 0x2c, 0x19, 0xb, 0x2, | |
0x0, 0x2, 0xb, 0x19, 0x2c, 0x45, 0x64, 0x87, 0xb1, 0xdf, | |
0x112, 0x14a, 0x187, 0x1c8, 0x20d, 0x257, 0x2a5, 0x2f6, 0x34c, 0x3a4, | |
0x3ff, 0x45d, 0x4be, 0x521, 0x586, 0x5ed, 0x655, 0x6bf, 0x729, 0x794 | |
} | |
, | |
// Triangular wave | |
{ | |
0x44, 0x88, 0xcc, 0x110, 0x154, 0x198, 0x1dc, 0x220, 0x264, 0x2a8, | |
0x2ec, 0x330, 0x374, 0x3b8, 0x3fc, 0x440, 0x484, 0x4c8, 0x50c, 0x550, | |
0x594, 0x5d8, 0x61c, 0x660, 0x6a4, 0x6e8, 0x72c, 0x770, 0x7b4, 0x7f8, | |
0x83c, 0x880, 0x8c4, 0x908, 0x94c, 0x990, 0x9d4, 0xa18, 0xa5c, 0xaa0, | |
0xae4, 0xb28, 0xb6c, 0xbb0, 0xbf4, 0xc38, 0xc7c, 0xcc0, 0xd04, 0xd48, | |
0xd8c, 0xdd0, 0xe14, 0xe58, 0xe9c, 0xee0, 0xf24, 0xf68, 0xfac, 0xff0, | |
0xfac, 0xf68, 0xf24, 0xee0, 0xe9c, 0xe58, 0xe14, 0xdd0, 0xd8c, 0xd48, | |
0xd04, 0xcc0, 0xc7c, 0xc38, 0xbf4, 0xbb0, 0xb6c, 0xb28, 0xae4, 0xaa0, | |
0xa5c, 0xa18, 0x9d4, 0x990, 0x94c, 0x908, 0x8c4, 0x880, 0x83c, 0x7f8, | |
0x7b4, 0x770, 0x72c, 0x6e8, 0x6a4, 0x660, 0x61c, 0x5d8, 0x594, 0x550, | |
0x50c, 0x4c8, 0x484, 0x440, 0x3fc, 0x3b8, 0x374, 0x330, 0x2ec, 0x2a8, | |
0x264, 0x220, 0x1dc, 0x198, 0x154, 0x110, 0xcc, 0x88, 0x44, 0x0 | |
} | |
, | |
// Sawtooth wave | |
{ | |
0x22, 0x44, 0x66, 0x88, 0xaa, 0xcc, 0xee, 0x110, 0x132, 0x154, | |
0x176, 0x198, 0x1ba, 0x1dc, 0x1fe, 0x220, 0x242, 0x264, 0x286, 0x2a8, | |
0x2ca, 0x2ec, 0x30e, 0x330, 0x352, 0x374, 0x396, 0x3b8, 0x3da, 0x3fc, | |
0x41e, 0x440, 0x462, 0x484, 0x4a6, 0x4c8, 0x4ea, 0x50c, 0x52e, 0x550, | |
0x572, 0x594, 0x5b6, 0x5d8, 0x5fa, 0x61c, 0x63e, 0x660, 0x682, 0x6a4, | |
0x6c6, 0x6e8, 0x70a, 0x72c, 0x74e, 0x770, 0x792, 0x7b4, 0x7d6, 0x7f8, | |
0x81a, 0x83c, 0x85e, 0x880, 0x8a2, 0x8c4, 0x8e6, 0x908, 0x92a, 0x94c, | |
0x96e, 0x990, 0x9b2, 0x9d4, 0x9f6, 0xa18, 0xa3a, 0xa5c, 0xa7e, 0xaa0, | |
0xac2, 0xae4, 0xb06, 0xb28, 0xb4a, 0xb6c, 0xb8e, 0xbb0, 0xbd2, 0xbf4, | |
0xc16, 0xc38, 0xc5a, 0xc7c, 0xc9e, 0xcc0, 0xce2, 0xd04, 0xd26, 0xd48, | |
0xd6a, 0xd8c, 0xdae, 0xdd0, 0xdf2, 0xe14, 0xe36, 0xe58, 0xe7a, 0xe9c, | |
0xebe, 0xee0, 0xf02, 0xf24, 0xf46, 0xf68, 0xf8a, 0xfac, 0xfce, 0xff0 | |
} | |
, | |
// Square wave | |
{ | |
0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, | |
0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, | |
0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, | |
0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, | |
0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, | |
0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, | |
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 | |
} | |
}; | |
#define NUMBER_OF_SHIFT_CHIPS 2 | |
#define DATA_WIDTH NUMBER_OF_SHIFT_CHIPS * 8 | |
#define PULSE_WIDTH_USEC 5 | |
int ploadPin = 8; // Connects to Parallel load pin the 165 | |
int dataPin = 11; // Connects to the Q7 pin the 165 | |
int clockPin = 12; // Connects to the Clock pin the 165 | |
uint16_t read_shift_regs() | |
{ | |
long bitVal; | |
uint16_t bytesVal = 0; | |
/* Trigger a parallel Load to latch the state of the data lines, | |
*/ | |
digitalWrite(ploadPin, LOW); | |
delayMicroseconds(PULSE_WIDTH_USEC); | |
digitalWrite(ploadPin, HIGH); | |
/* Loop to read each bit value from the serial out line | |
* of the SN74HC165N. | |
*/ | |
for(int i = 0; i < DATA_WIDTH; i++) | |
{ | |
bitVal = digitalRead(dataPin); | |
/* Set the corresponding bit in bytesVal. | |
*/ | |
bytesVal |= (bitVal << ((DATA_WIDTH-1) - i)); | |
/* Pulse the Clock (rising edge shifts the next bit). | |
*/ | |
digitalWrite(clockPin, HIGH); | |
delayMicroseconds(PULSE_WIDTH_USEC); | |
digitalWrite(clockPin, LOW); | |
} | |
return(bytesVal); | |
} | |
void display_pin_values(uint16_t pinValues) | |
{ | |
SerialUSB.print("Pin States:\r\n"); | |
for(int i = 0; i < DATA_WIDTH; i++) | |
{ | |
SerialUSB.print(" Pin-"); | |
SerialUSB.print(i); | |
SerialUSB.print(": "); | |
if((pinValues >> i) & 1) | |
SerialUSB.print("HIGH"); | |
else | |
SerialUSB.print("LOW"); | |
SerialUSB.print("\r\n"); | |
} | |
SerialUSB.print("\r\n"); | |
} | |
void setup() { | |
analogWriteResolution(12); | |
pinMode(LED_BUILTIN, OUTPUT); | |
SerialUSB.begin(9600); | |
pinMode(ploadPin, OUTPUT); | |
pinMode(clockPin, OUTPUT); | |
pinMode(dataPin, INPUT); | |
digitalWrite(clockPin, LOW); | |
digitalWrite(ploadPin, HIGH); | |
} | |
int i = 0; | |
void loop() { | |
//1 | |
// digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level) | |
// delay(100); // wait for a second | |
// digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW | |
// delay(100); // wait for a second | |
// int v8 = analogRead(8); | |
// int v9 = analogRead(9); | |
// int v10 = analogRead(10); | |
// int v11 = analogRead(11); | |
// if (SerialUSB.available()) { | |
// SerialUSB.print(v8); | |
// SerialUSB.print(" "); | |
// SerialUSB.print(v9); | |
// SerialUSB.print(" "); | |
// SerialUSB.print(v10); | |
// SerialUSB.print(" "); | |
// SerialUSB.print(v11); | |
// SerialUSB.println(); | |
// } | |
//2 | |
// analogWrite(DAC0, waveformsTable[0][i]); // write the selected waveform on DAC0 | |
// analogWrite(DAC1, waveformsTable[1][i]); // write the selected waveform on DAC1 | |
// i++; | |
// if(i == maxSamplesNum) // Reset the counter to repeat the wave | |
// i = 0; | |
// delayMicroseconds(8); | |
//3 | |
uint16_t pinValues = read_shift_regs(); | |
display_pin_values(pinValues); | |
delay(500); | |
} |
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