static void updateReport()
{
latch(CD4021BE_LATCH_PIN);
currentState.buttons0 = shiftIn(CD4021BE_DATA_PIN, CD4021BE_CLOCK_PIN);
currentState.buttons1 = shiftIn(CD4021BE_DATA_PIN, CD4021BE_CLOCK_PIN);
currentState.buttons2 = ~PINB & 0x1f /*00011111 = PB0-PB4*/ | (currentState.buttons2 & 0xe0); /*11100000 = REL0 RER0 REL1*/
// currentState.buttons3 = RER1 REL2 RER2 REL3 RER3 REL4 RER4
uint8_t change0 = currentState.buttons0 ^ previousState.buttons0;
uint8_t change1 = currentState.buttons1 ^ previousState.buttons1;
uint8_t change2 = (currentState.buttons2 & 0x1f) | ( (currentState.buttons2 ^ previousState.buttons2) & 0xe0 );
uint8_t change3 = currentState.buttons3 ^ previousState.buttons3;
memcpy(&previousState, ¤tState, sizeof(gamepad_report_t));
for (uint8_t i = 0; i < CHANGE_BUFFER_LENGTH; i++)
{
changeBuffer[i].buttons0 |= change0;
changeBuffer[i].buttons1 |= change1;
changeBuffer[i].buttons2 |= change2;
changeBuffer[i].buttons3 |= change3;
}
memcpy(&gamepad_report, &changeBuffer[changeBufferIndex], sizeof(gamepad_report_t));
changeBuffer[changeBufferIndex].buttons0 = 0;
changeBuffer[changeBufferIndex].buttons1 = 0;
changeBuffer[changeBufferIndex].buttons2 = 0;
changeBuffer[changeBufferIndex].buttons3 = 0;
changeBufferIndex++;
changeBufferIndex %= CHANGE_BUFFER_LENGTH;
}
uint16_t sensirion::getData16SHT(int _dataPin, int _clockPin)
{
uint16_t val;
// start with idle colock
digitalWrite(_clockPin, LOW);
// Get the most significant bits
pinMode(_dataPin, INPUT);
pinMode(_clockPin, OUTPUT);
//val = shiftIn(_dataPin, _clockPin, 8);
val = shiftIn(_dataPin, _clockPin, MSBFIRST );
val *= 256;
// Send the required ack
digitalWrite(_dataPin, LOW);
pinMode(_dataPin, OUTPUT);
shtDelay(1);
digitalWrite(_clockPin, HIGH);
shtDelay(1);
digitalWrite(_clockPin, LOW);
shtDelay(1);
pinMode(_dataPin, INPUT);
// Get the least significant bits
//val |= shiftIn(_dataPin, _clockPin, 8);
val |= shiftIn(_dataPin, _clockPin, MSBFIRST);
return val;
}
// Returns the heading [-PI;PI] with East being 0 and North -PI/2
float HM55B::getHeading(){
startMeasurementCommand(); // necessary!!
delay(40); // the data is 40ms later ready
readCommand();
x_data = shiftIn(11); // Field strength in X
y_data = shiftIn(11); // and Y direction
digitalWrite(EN_PIN, HIGH); // ok deselect chip
heading = atan2(x_data, -1 * y_data);
return heading;
}
void Ecolino_Hijacker::refresh_states()
{
// TODO: verify no bus contention
byte sr_buffer;
// select U2 on ecolino_ctl_board.schem (buttons 1-3)
digitalWrite(ARD_MUX_A0, LOW);
digitalWrite(ARD_MUX_A1, LOW);
digitalWrite(ARD_MUX_EN_NOT, LOW); // enable multiplexer on panel
sr_buffer = shiftIn(ARD_PANEL_DIN, ARD_DIN_CLK, LSBFIRST); // correct bit order?
user_button_states[0] = (sr_buffer & 0x08) ? BUTTON_STATE_PRESSED : BUTTON_STATE_RELEASED;
user_button_states[1] = (sr_buffer & 0x04) ? BUTTON_STATE_PRESSED : BUTTON_STATE_RELEASED;
user_button_states[2] = (sr_buffer & 0x02) ? BUTTON_STATE_PRESSED : BUTTON_STATE_RELEASED;
digitalWrite(ARD_MUX_EN_NOT, HIGH); // disable multiplexer on panel
// select U2 on ecolino_ctl_board.schem (buttons 8-11)
digitalWrite(ARD_MUX_A0, HIGH);
digitalWrite(ARD_MUX_A1, LOW);
digitalWrite(ARD_MUX_EN_NOT, LOW); // enable multiplexer on panel
sr_buffer = shiftIn(ARD_PANEL_DIN, ARD_DIN_CLK, LSBFIRST); // correct bit order?
for (int i = 0; i < 8; i++)
user_button_states[10 - i] = (sr_buffer & (1 << i)) ? BUTTON_STATE_PRESSED : BUTTON_STATE_RELEASED;
digitalWrite(ARD_MUX_EN_NOT, HIGH); // disable multiplexer on panel
// read led state from board
// arduino is 16 Mhz ,
// 0.2 us from selecting multiplexer to flipping multiplexer enable
// we have ~.5 us window to catch led state enable and flip sr load pin. This gives us 8 cycles to flip pin
// read is 63 ns, write is 63 ns, loop overhead is? [calc says cycle is 62 ns]
// best method is : wait for demux_en_not to go low. Wait one millisecond. The next time the a1 pin goes low, led data is valid
// and we have 0.6 us to catch a single pin flip with another 0.1 to latch into the SR
// for sr: want clock low and parallel enable low to begin with. Then clock in data.
bitWrite(PORTB, 3, 0); // active low ARD_DIN_LD_NOT enabled. (Parallel load)
while(bitRead(PORTC, 4)); // wait for demux enable. Should put this at top of function so it's done ahead of time and delay isn't needed
delay(1); // delay would be replaced by time spent reading the buttons from panel. Able to do this because 10 ms between updates
while (bitRead(PORTC, 2)); // wait for a1 to go low (6 cycles)
bitWrite(PORTB, 2, 1); // latch in the data waste .1 us (2 cycles). This is clock pin
bitWrite(PORTB, 2, 0); // probably should put some delay before this. This is clock pin
sr_buffer = shiftIn(ARD_BRD_DIN, ARD_DIN_CLK, LSBFIRST); // bit order correct ?
// save the state of the leds
for (int i = 0; i < 8; i++)
board_led_states[i] = (sr_buffer & 1 << i) ? LED_STATE_ON : LED_STATE_OFF;
// last four are flipped state
for (int i = 4; i < 8; i++)
board_led_states[i] != board_led_states[i];
}
int Encoder::getEncoder()
{
digitalWrite(_chipSelect,LOW);
byte _incoming = shiftIn(_dataPin, _clockPin, MSBFIRST);
_sensorValue = _incoming<<2;
_incoming = shiftIn(_dataPin, _clockPin, MSBFIRST);
digitalWrite(_chipSelect,HIGH);
_incoming = _incoming >> 6;
_sensorValue |= _incoming;
return _sensorValue;
}
double LM95172::getTempC()
{
double result = 0.0;
pinMode(PIN_SIO, INPUT);
byte h = shiftIn(PIN_SIO, PIN_CLK, MSBFIRST);
byte l = shiftIn(PIN_SIO, PIN_CLK, MSBFIRST);
unsigned int v = (h << 8) | l;
if (currentResolution == 13) {
if (v >= 4096) {
result = (4096.0 - (v >> 3)) * 0.0625;
} else {
uint8_t Adafruit_STMPE610::spiIn() {
if (_CLK == -1) {
#if defined (SPI_HAS_TRANSACTION)
uint8_t d = SPI.transfer(0);
return d;
#elif defined (__AVR__)
SPCRbackup = SPCR;
SPCR = mySPCR;
uint8_t d = SPI.transfer(0);
SPCR = SPCRbackup;
return d;
#elif defined (__arm__)
SPI.setClockDivider(84);
SPI.setDataMode(m_spiMode);
uint8_t d = SPI.transfer(0);
return d;
#elif defined(__ARDUINO_X86__)
SPI.setClockDivider(SPI_CLOCK_DIV16);
SPI.setDataMode(m_spiMode);
uint8_t d = SPI.transfer(0);
return d;
#endif
}
else
return shiftIn(_MISO, _CLK, MSBFIRST);
}
uint8_t sensirion::readCRC(int _dataPin, int _clockPin )
{
uint8_t crc;
// Send the required ack
digitalWrite(_dataPin, LOW);
pinMode(_dataPin, OUTPUT);
shtDelay(1);
digitalWrite(_clockPin, HIGH);
shtDelay(1);
digitalWrite(_clockPin, LOW);
shtDelay(1);
pinMode(_dataPin, INPUT);
// Get the crc value
crc = shiftIn(_dataPin, _clockPin, MSBFIRST);
// end comm, turn off gpio's
pinMode(_dataPin, INPUT);
pinMode(_clockPin, INPUT);
return crc;
/*
uint8_t local_crc = crc8( (uint8_t*)&data, 2);
if (crc != local_crc){
Serial.println("SHT: crc error");
Serial.print(" Got: 0x"); Serial.println(crc, HEX);
Serial.print(" Expected: 0x"); Serial.println(local_crc, HEX);
}
*/
}
uint8_t PFFS::SPI_RECEIVE (void)
{
#if _SoftSPI
// data = 0;
digitalWrite(_MOSI, HIGH);
//
// if(digitalRead(_MISO)) data+=0x80; /* bit7 */
// digitalWrite(_SCLK, HIGH);digitalWrite(_SCLK, LOW);
// if(digitalRead(_MISO)) data+=0x40; /* bit6 */
// digitalWrite(_SCLK, HIGH);digitalWrite(_SCLK, LOW);
// if(digitalRead(_MISO)) data+=0x20; /* bit5 */
// digitalWrite(_SCLK, HIGH);digitalWrite(_SCLK, LOW);
// if(digitalRead(_MISO)) data+=0x10; /* bit4 */
// digitalWrite(_SCLK, HIGH);digitalWrite(_SCLK, LOW);
// if(digitalRead(_MISO)) data+=0x08; /* bit3 */
// digitalWrite(_SCLK, HIGH);digitalWrite(_SCLK, LOW);
// if(digitalRead(_MISO)) data+=0x04; /* bit2 */
// digitalWrite(_SCLK, HIGH);digitalWrite(_SCLK, LOW);
// if(digitalRead(_MISO)) data+=0x02; /* bit1 */
// digitalWrite(_SCLK, HIGH);digitalWrite(_SCLK, LOW);
// if(digitalRead(_MISO)) data+=0x01; /* bit0 */
// digitalWrite(_SCLK, HIGH);digitalWrite(_SCLK, LOW);
//
// return data;
return shiftIn(_MISO, _SCLK, MSBFIRST);
#else
return SPI.transfer( 0xFF );
#endif
}
String shiftin()
{
int dataPin=str2int(rdata("dataPin ?"));
int clockPin=str2int(rdata("clockPin ?"));
int bitOrder=str2int(rdata("bitOrder ?"));
return shiftIn(dataPin, clockPin, bitOrder);
}
long HX711::read() {
// wait for the chip to become ready
while (!is_ready()) {
// Will do nothing on Arduino but prevent resets of ESP8266 (Watchdog Issue)
yield();
}
unsigned long value = 0;
byte data[3] = { 0 };
byte filler = 0x00;
// pulse the clock pin 24 times to read the data
data[2] = shiftIn(DOUT, PD_SCK, MSBFIRST);
data[1] = shiftIn(DOUT, PD_SCK, MSBFIRST);
data[0] = shiftIn(DOUT, PD_SCK, MSBFIRST);
// set the channel and the gain factor for the next reading using the clock pin
for (unsigned int i = 0; i < GAIN; i++) {
digitalWrite(PD_SCK, HIGH);
digitalWrite(PD_SCK, LOW);
}
// Datasheet indicates the value is returned as a two's complement value
// Flip all the bits
data[2] = ~data[2];
data[1] = ~data[1];
data[0] = ~data[0];
// Replicate the most significant bit to pad out a 32-bit signed integer
if ( data[2] & 0x80 ) {
filler = 0xFF;
} else if ((0x7F == data[2]) && (0xFF == data[1]) && (0xFF == data[0])) {
filler = 0xFF;
} else {
filler = 0x00;
}
// Construct a 32-bit signed integer
value = ( static_cast<unsigned long>(filler) << 24
| static_cast<unsigned long>(data[2]) << 16
| static_cast<unsigned long>(data[1]) << 8
| static_cast<unsigned long>(data[0]) );
// ... and add 1
return static_cast<long>(++value);
}
uint8_t NESpad_Buttons(NESpad *pad)
{
strobe(pad);
digitalWrite(pad->m_clock,LOW);
byte ret = digitalRead(pad->m_data)
| (shiftIn(pad->m_data, pad->m_clock, LSBFIRST) << 1);
return ~ret;
}
int HM55B::readCommand() {
int result = 0;
pinMode(DIO_PIN, OUTPUT);
digitalWrite(EN_PIN, LOW);
shiftOut(B1100, 3);
result = shiftIn(3);
return result;
}
long HX711::read() {
// Byte: 0 1 2 3
// Bits: 76543210 76543210 76543210 76543210
// Data: |--------|--------|--------|--------|
// Bit#: 33222222 22221111 11111100 00000000
// 10987654 32109876 54321098 76543210
union DataBuffer {
byte data[4];
long value;
} data_buffer;
// Wait for the chip to become ready
for (; !is_ready() ;) {
// Will do nothing on Arduino but prevent resets of ESP8266 (Watchdog Issue)
yield();
}
// Pulse the clock pin 24 times to read the data
data_buffer.data[1] = shiftIn(DOUT, PD_SCK, MSBFIRST);
data_buffer.data[2] = shiftIn(DOUT, PD_SCK, MSBFIRST);
data_buffer.data[3] = shiftIn(DOUT, PD_SCK, MSBFIRST);
// Set the channel and the gain factor for the next reading using the clock pin
for (unsigned int i = GAIN ; 0 < i ; --i) {
digitalWrite(PD_SCK, HIGH);
digitalWrite(PD_SCK, LOW);
}
// Replicate the most significant bit to pad out a 32-bit signed integer
if ( data_buffer.data[1] & 0x80 ) {
data_buffer.data[0] = 0xFF;
} else {
data_buffer.data[0] = 0x00;
}
// Datasheet indicates the value is a 24-bit two's complement (signed) value
// https://cdn.sparkfun.com/datasheets/Sensors/ForceFlex/hx711_english.pdf
// Flip all the bits
data_buffer.value = ~data_buffer.value;
// ... and add 1
return ++data_buffer.value;
}
unsigned long ShiftInController::getShiftIn()
{
unsigned long tmp_shiftin=0;
unsigned long val_shiftin=0;
for (int i=0; i < 4; i++){
tmp_shiftin = shiftIn(_data_pin, _clock_pin, LSBFIRST);
tmp_shiftin=tmp_shiftin<<(8*i);
val_shiftin+=tmp_shiftin;
}
return val_shiftin;
}
static ERL_NIF_TERM
shift_in_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
int data_pin, clock_pin, order, value;
if (!enif_get_int(env, argv[0], &data_pin) ||
!enif_get_int(env, argv[1], &clock_pin) ||
!enif_get_int(env, argv[2], &order))
{
return enif_make_badarg(env);
}
value = shiftIn((uint8_t)data_pin, (uint8_t)clock_pin, (uint8_t)order);
return enif_make_int(env, value);
}
int SHT1x::getData16SHT(int _dataPin, int _clockPin)
{
int val;
// Get the most significant bits
pinMode(_dataPin, INPUT);
pinMode(_clockPin, OUTPUT);
val = shiftIn(_dataPin, _clockPin, 8);
val *= 256;
// Send the required ack
pinMode(_dataPin, OUTPUT);
digitalWrite(_dataPin, HIGH);
digitalWrite(_dataPin, LOW);
digitalWrite(_clockPin, HIGH);
digitalWrite(_clockPin, LOW);
// Get the least significant bits
pinMode(_dataPin, INPUT);
val |= shiftIn(_dataPin, _clockPin, 8);
return val;
}
int pincodeProcessor() {
static char command[50]; //
static short cmd_index = 0; // the index in the string to put the next received character
static boolean dtmfProcessed = false;
// If a DTMF tone is being detected:
char detected = digitalRead(PIN_DTMF_DETECTED);//check if DTMF is being detected. digitalRead: read the value for the specified digital PIN
dtmfProcessed = (detected && dtmfProcessed);//dtmfProcess should be true if it is already true, and a DTMF tone still being detected
if (!dtmfProcessed & detected) {//If DTMF is being detected and it hasn't been processed yet
Serial.println("pincode inside !dtmfProcessed & detected");
dtmfProcessed = true;
char tone = 0;
//Read which tone was detected by shifting in bits from the DTMF chip
tone = shiftIn(PIN_DTMF_DATA, PIN_DTMF_ACK, LSBFIRST) & 0xF; //Keep only 4 lowest bits
if(processDTMF(tone + '0') == 0){
Serial.println("pincode inside processDTMF");
return 0;
//playHappyTone();
}else{
return 1;
//playSadTone();
}
//If there is data on the serial port connected to the GSM moduel
/* if(Serial2.available() >0){
incoming_char = Serial2.read();
Serial.print(incoming_char); //when one byte comes on the serial port from the GSM module, send to the PC
if (incoming_char == '\r'){ //When we get carriage return, we know the line is finished and we can see what we got
command[cmd_index] = '\0'; //terminate Command String
processCommand(command);
cmd_index = 0;//Start from the beginning
}else if(cmd_index < 49){
if(incoming_char != 10)//10 is the ascii code for line feed
command[cmd_index++] = incoming_char;
}*/
}
return 0;
}
/*!
@brief Read from the decoder if a tone is pressed
@authors Yavor Paunov, Anita Blazheva.
@return pressed key tone
*/
int readDTMF(){
boolean dtmfProcessed = false;
char detected = digitalRead(PIN_DTMF_DETECTED);
dtmfProcessed = (detected && dtmfProcessed);
if (!dtmfProcessed & detected) {
dtmfProcessed = true;
char tone = 0;
tone = shiftIn(PIN_DTMF_DATA, PIN_DTMF_ACK, LSBFIRST) & 0xF;
Serial.print("DTMF :");
Serial.println((int)tone);
// delay(1000);
return tone;
}
return -1;
}
uint8_t
ShiftConnection::receive() const {
pinMode(_mosi, INPUT);
// TODO: ?retrieve CPHA from SPI mode and preinit _sclk?
return shiftIn(_mosi, _sclk, _config.getBitOrder());
}
void PCF8574::shiftIn(uint8_t* val) {
shiftIn(val,1);
}
mrb_value mrb_arduino_shiftIn(mrb_state *mrb, mrb_value self){
mrb_int dataPin, clockPin, bitOrder;
int n = mrb_get_args(mrb, "iii", &dataPin, &clockPin, &bitOrder);
return mrb_fixnum_value(shiftIn(dataPin, clockPin, bitOrder));
}
void loop() {
uint8_t value = shiftIn(clock, data);
shiftOut(clock, data, value);
}
