int htu21dSetup (const int pinBase)
{
int fd ;
struct wiringPiNodeStruct *node ;
uint8_t data ;
int status ;
if ((fd = wiringPiI2CSetup (I2C_ADDRESS)) < 0)
return FALSE ;
node = wiringPiNewNode (pinBase, 2) ;
node->fd = fd ;
node->analogRead = myAnalogRead ;
// Send a reset code to it:
data = 0xFE ;
if (write (fd, &data, 1) != 1)
return FALSE ;
delay (15) ;
// Read the status register to check it's really there
status = wiringPiI2CReadReg8 (fd, 0xE7) ;
return (status == 0x02) ? TRUE : FALSE ;
}
int ds18b20Setup (const int pinBase, const char *deviceId)
{
int fd ;
struct wiringPiNodeStruct *node ;
char *fileName ;
// Allocate space for the filename
if ((fileName = malloc (strlen (W1_PREFIX) + strlen (W1_POSTFIX) + strlen (deviceId) + 1)) == NULL)
return FALSE ;
sprintf (fileName, "%s%s%s", W1_PREFIX, deviceId, W1_POSTFIX) ;
fd = open (fileName, O_RDONLY) ;
free (fileName) ;
if (fd < 0)
return FALSE ;
// We'll keep the file open, to make access a little faster
// although it's very slow reading these things anyway )-:
node = wiringPiNewNode (pinBase, 1) ;
node->fd = fd ;
node->analogRead = myAnalogRead ;
return TRUE ;
}
int drcSetup (const int pinBase, const int numPins, const char *device)
{
int fd ;
int ok, tries ;
time_t then ;
struct wiringPiNodeStruct *node ;
if ((fd = serialOpen (device, 115200)) < 0)
return wiringPiFailure (WPI_ALMOST, "Unable to open DRC device (%s): %s", device, strerror (errno)) ;
delay (10) ; // May need longer if it's an Uno that reboots on the open...
// Flush any pending input
while (serialDataAvail (fd))
(void)serialGetchar (fd) ;
ok = FALSE ;
for (tries = 1 ; tries < 5 ; ++tries)
{
serialPutchar (fd, '@') ;
then = time (NULL) + 2 ;
while (time (NULL) < then)
if (serialDataAvail (fd))
{
if (serialGetchar (fd) == '@')
{
ok = TRUE ;
break ;
}
}
if (ok)
break ;
}
if (!ok)
{
serialClose (fd) ;
return wiringPiFailure (WPI_FATAL, "Unable to communidate with DRC device") ;
}
node = wiringPiNewNode (pinBase, numPins) ;
node->fd = fd ;
node->pinMode = myPinMode ;
node->pullUpDnControl = myPullUpDnControl ;
node->analogRead = myAnalogRead ;
node->digitalRead = myDigitalRead ;
node->digitalWrite = myDigitalWrite ;
node->pwmWrite = myPwmWrite ;
return 0 ;
}
int max31855Setup (const int pinBase, int spiChannel)
{
struct wiringPiNodeStruct *node ;
if (wiringPiSPISetup (spiChannel, 5000000) < 0) // 5MHz - prob 4 on the Pi
return -1 ;
node = wiringPiNewNode (pinBase, 4) ;
node->fd = spiChannel ;
node->analogRead = myAnalogRead ;
return 0 ;
}
int mcp3004Setup (const int pinBase, int spiChannel)
{
struct wiringPiNodeStruct *node ;
if (wiringPiSPISetup (spiChannel, 1000000) < 0)
return -1 ;
node = wiringPiNewNode (pinBase, 8) ;
node->fd = spiChannel ;
node->analogRead = myAnalogRead ;
return 0 ;
}
int mcp4802Setup (const int pinBase, int spiChannel)
{
struct wiringPiNodeStruct *node ;
if (wiringPiSPISetup (spiChannel, 1000000) < 0)
return FALSE ;
node = wiringPiNewNode (pinBase, 2) ;
node->fd = spiChannel ;
node->analogWrite = myAnalogWrite ;
return TRUE ;
}
int mcp3422Setup (int pinBase, int i2cAddress, int sampleRate, int gain)
{
int fd ;
struct wiringPiNodeStruct *node ;
if ((fd = wiringPiI2CSetup (i2cAddress)) < 0)
return fd ;
node = wiringPiNewNode (pinBase, 4) ;
node->data0 = sampleRate ;
node->data1 = gain ;
node->analogRead = myAnalogRead ;
return 0 ;
}
int pcf8591Setup (const int pinBase, const int i2cAddress)
{
int fd ;
struct wiringPiNodeStruct *node ;
if ((fd = wiringPiI2CSetup (i2cAddress)) < 0)
return fd ;
node = wiringPiNewNode (pinBase, 4) ;
node->fd = fd ;
node->analogRead = myAnalogRead ;
node->analogWrite = myAnalogWrite ;
return 0 ;
}
/* wiringPiNewNode
*
* Parameters:
* - pinBase: int
* - numPins: int
* Return Type: struct wiringPiNodeStruct *
*/
mrb_value
mrb_Pi_wiringPiNewNode(mrb_state* mrb, mrb_value self) {
mrb_int native_pinBase;
mrb_int native_numPins;
/* Fetch the args */
mrb_get_args(mrb, "ii", &native_pinBase, &native_numPins);
/* Invocation */
struct wiringPiNodeStruct * result = wiringPiNewNode(native_pinBase, native_numPins);
/* Box the return value */
mrb_value return_value = (result == NULL ? mrb_nil_value() : mruby_box_wiringPiNodeStruct(mrb, result));
return return_value;
}
int pcf8574Setup (const int pinBase, const int i2cAddress)
{
int fd ;
struct wiringPiNodeStruct *node ;
if ((fd = wiringPiI2CSetup (i2cAddress)) < 0)
return fd ;
node = wiringPiNewNode (pinBase, 8) ;
node->fd = fd ;
node->pinMode = myPinMode ;
node->digitalRead = myDigitalRead ;
node->digitalWrite = myDigitalWrite ;
node->data2 = wiringPiI2CRead (fd) ;
return 0 ;
}
int ads1115Setup (const int pinBase, int i2cAddr)
{
struct wiringPiNodeStruct *node ;
int fd ;
if ((fd = wiringPiI2CSetup (i2cAddr)) < 0)
return FALSE ;
node = wiringPiNewNode (pinBase, 8) ;
node->fd = fd ;
node->data0 = CONFIG_PGA_4_096V ; // Gain in data0
node->data1 = CONFIG_DR_128SPS ; // Samples/sec in data1
node->analogRead = myAnalogRead ;
node->analogWrite = myAnalogWrite ;
node->digitalWrite = myDigitalWrite ;
return TRUE ;
}
int mcp23008Setup (const int pinBase, const int i2cAddress)
{
int fd ;
struct wiringPiNodeStruct *node ;
if ((fd = wiringPiI2CSetup (i2cAddress)) < 0)
return FALSE ;
wiringPiI2CWriteReg8 (fd, MCP23x08_IOCON, IOCON_INIT) ;
node = wiringPiNewNode (pinBase, 8) ;
node->fd = fd ;
node->pinMode = myPinMode ;
node->pullUpDnControl = myPullUpDnControl ;
node->digitalRead = myDigitalRead ;
node->digitalWrite = myDigitalWrite ;
node->data2 = wiringPiI2CReadReg8 (fd, MCP23x08_OLAT) ;
return TRUE ;
}
int piFaceSetup (const int pinBase)
{
int x ;
struct wiringPiNodeStruct *node ;
if ((x = wiringPiSPISetup (PIFACE_DEVNO, PIFACE_SPEED)) < 0)
return x ;
// Setup the MCP23S17
writeByte (MCP23x17_IOCON, IOCON_INIT) ;
writeByte (MCP23x17_IODIRA, 0x00) ; // Port A -> Outputs
writeByte (MCP23x17_IODIRB, 0xFF) ; // Port B -> Inputs
node = wiringPiNewNode (pinBase, 16) ;
node->digitalRead = myDigitalRead ;
node->digitalWrite = myDigitalWrite ;
node->pullUpDnControl = myPullUpDnControl ;
return 0 ;
}
int mcp23017Setup (const int pinBase, const int i2cAddress)
{
int fd ;
struct wiringPiNodeStruct *node ;
if ((fd = wiringPiI2CSetup (i2cAddress)) < 0)
return fd ;
wiringPiI2CWriteReg8 (fd, MCP23x17_IOCON, IOCON_INIT) ;
node = wiringPiNewNode (pinBase, 16) ;
node->fd = fd ;
node->pinMode = myPinMode ;
node->pullUpDnControl = myPullUpDnControl ;
node->digitalRead = myDigitalRead ;
node->digitalWrite = myDigitalWrite ;
node->data2 = wiringPiI2CReadReg8 (fd, MCP23x17_OLATA) ;
node->data3 = wiringPiI2CReadReg8 (fd, MCP23x17_OLATB) ;
return 0 ;
}
/**
* initialize the Max7311
* @param portDirection1 default values of ports 0-7 (1 - input; 0 - output)
* @param portDirection2 default values of ports 8-15 (1 - input; 0 - output)
* @param timeoutFlag 1 enable Bus timeout, 0 disable Bus timeout
*/
void Max7312::init(unsigned char portDirection1,
unsigned char portDirection2,
unsigned char timeoutFlag)
{
initDataBuffers();
if ((fd = wiringPiI2CSetup (_chipAddress)) < 0)
return;
node = wiringPiNewNode (_pinBase, MAX7312_NUM_OF_PORTS) ;
node->fd = fd ;
node->pinMode = _configPortMax7312;
node->digitalRead = _readPortMax7312;
node->digitalWrite = _writePortMax7312;
node->data1 = readPort1 () ;
node->data2 = readPort2 () ;
node->thisNode = this;
configPort1(portDirection1);
configPort2(portDirection2);
configTimeout(timeoutFlag);
}
int sn3218Setup (const int pinBase)
{
int fd ;
struct wiringPiNodeStruct *node ;
if ((fd = wiringPiI2CSetup (0x54)) < 0)
return fd ;
// Setup the chip - initialise all 18 LEDs to off
//wiringPiI2CWriteReg8 (fd, 0x17, 0) ; // Reset
wiringPiI2CWriteReg8 (fd, 0x00, 1) ; // Not Shutdown
wiringPiI2CWriteReg8 (fd, 0x13, 0x3F) ; // Enable LEDs 0- 5
wiringPiI2CWriteReg8 (fd, 0x14, 0x3F) ; // Enable LEDs 6-11
wiringPiI2CWriteReg8 (fd, 0x15, 0x3F) ; // Enable LEDs 12-17
wiringPiI2CWriteReg8 (fd, 0x16, 0x00) ; // Update
node = wiringPiNewNode (pinBase, 18) ;
node->fd = fd ;
node->analogWrite = myAnalogWrite ;
return 0 ;
}
int piFaceSetup (const int pinBase)
{
int i ;
struct wiringPiNodeStruct *node ;
// Create an mcp23s17 instance:
mcp23s17Setup (pinBase + 16, 0, 0) ;
// Set the direction bits
for (i = 0 ; i < 8 ; ++i)
{
pinMode (pinBase + 16 + i, OUTPUT) ; // Port A is the outputs
pinMode (pinBase + 16 + 8 + i, INPUT) ; // Port B inputs.
}
node = wiringPiNewNode (pinBase, 16) ;
node->digitalRead = myDigitalRead ;
node->digitalWrite = myDigitalWrite ;
node->pullUpDnControl = myPullUpDnControl ;
return 0 ;
}
int mcp23s17Setup (const int pinBase, const int spiPort, const int devId)
{
int x ;
struct wiringPiNodeStruct *node ;
if ((x = wiringPiSPISetup (spiPort, MCP_SPEED)) < 0)
return x ;
writeByte (spiPort, devId, MCP23x17_IOCON, IOCON_INIT | IOCON_HAEN) ;
writeByte (spiPort, devId, MCP23x17_IOCONB, IOCON_INIT | IOCON_HAEN) ;
node = wiringPiNewNode (pinBase, 16) ;
node->data0 = spiPort ;
node->data1 = devId ;
node->pinMode = myPinMode ;
node->pullUpDnControl = myPullUpDnControl ;
node->digitalRead = myDigitalRead ;
node->digitalWrite = myDigitalWrite ;
node->data2 = readByte (spiPort, devId, MCP23x17_OLATA) ;
node->data3 = readByte (spiPort, devId, MCP23x17_OLATB) ;
return 0 ;
}
