LedMatrix::LedMatrix(int m) {
int i;
moduleNum = m;
_width = 32*moduleNum;
//cout << "Modules: " << int(moduleNum) << ", width " << int(_width) << endl;
_height = 8;
modules = new LedModule[m];
fontWidth = 8;
if (wiringPiSPISetup(0, 256000) <0)
cout << "SPI Setup Failed for channel 0: " << strerror(errno) << endl;
if (wiringPiSPISetup(1, 256000) <0)
cout << "SPI Setup Failed for channel 1: " << strerror(errno) << endl;
if (wiringPiSetup() == -1)
exit(1);
pinMode(0, OUTPUT);
pinMode(1, OUTPUT);
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
//cout << "Initializing " << int(m) << " modules" << endl;
for (i=0; i < m; i++) {
modules[i].setChip(i);
modules[i].init();
}
//cout << "Done initializing " << int(m) << " modules" << endl;
}
/*
* Function: ioBoardSpiTest
* Description: be used to test SPI interface on the board
*
* host slave
* MISO < - > MISO
* MOSI < - > MOSI
* CLK < - > CLK
* CE0/1 < - > CS
*/
void ioBoardSpiTest()
{
int fd;
unsigned char wData = 0x65; //write value
unsigned char retv;
#if 0
system("gpio load spi"); //load spi driver
fd = wiringPiSPISetup(0, 5000000); //channel:0 5M
#else
fd = wiringPiSPISetup(0, 500000); //channel:0 500k
#endif
if(fd < 0)
{
printf("Open the SPI device failed!\n");
return;
}
at45BufWrite(wData);
delay(100); //delay 100ms
retv = at45BufRead();
printf("SPI: read data: 0x%02x\n", retv);
if(wData == retv)
{
printf("SPI: the spi interface is OK!\n");
}
else
{
printf("SPI: the spi interface is not OK! Please check out!\n");
}
close(fd);
}
static ERL_NIF_TERM setup_2(ErlNifEnv *env, int argc, const ERL_NIF_TERM argv[]) {
unsigned int channel;
unsigned long speed;
int error;
if (argc != 2 || !enif_is_number(env, argv[0]) || !enif_is_number(env, argv[1])) {
return enif_make_badarg(env);
}
if (!enif_get_uint(env, argv[0], &channel)) {
return enif_make_badarg(env);
}
if (!enif_get_ulong(env, argv[1], &speed)) {
return enif_make_badarg(env);
}
if (speed < 500000 || speed > 32000000) {
return enif_make_badarg(env);
}
switch (channel) {
case 0:
if (state0.fd != 0) {
return enif_make_tuple2(env, enif_make_atom(env, "error"), enif_make_string(env, "channel already opened", ERL_NIF_LATIN1));
}
else {
state0.env = env;
state0.fd = wiringPiSPISetup(channel, speed);
if (state0.fd == 0) {
error = errno;
return enif_make_tuple2(env, enif_make_atom(env, "error"), enif_make_int(env, error));
}
else {
return enif_make_tuple2(env, enif_make_atom(env, "ok"), enif_make_int(env, channel));
}
}
break;
case 1:
if (state1.fd != 0) {
return enif_make_tuple2(env, enif_make_atom(env, "error"), enif_make_string(env, "channel already opened", ERL_NIF_LATIN1));
}
else {
state1.env = env;
state1.fd = wiringPiSPISetup(channel, speed);
if (state1.fd == 0) {
error = errno;
return enif_make_tuple2(env, enif_make_atom(env, "error"), enif_make_int(env, error));
}
else {
return enif_make_tuple2(env, enif_make_atom(env, "ok"), enif_make_int(env, channel));
}
}
break;
default:
return enif_make_badarg(env);
}
}
int main(int argc, char *argv[]){
if( argc > 1 ){
sscanf(argv[1], "%i", &frame_time);
}
signal(SIGINT, sigintHandler);
wiringPiSetupGpio();
pinMode(PIN_CS, OUTPUT);
pinMode(PIN_RST, OUTPUT);
pinMode(PIN_A, OUTPUT);
//digitalWrite(PIN_CS, LOW);
memset(buf, 0, BUF_SIZE);
if(wiringPiSPISetup(0, SPI_SPEED_HZ)==-1){
printf("Could not initialize SPI\n");
return;
};
lcd_reset();
lcd_command((unsigned char[8]){
0xA2,
0xA0,
0xC8,
0xA4,
0xA6,
0x2F,
0x60,
0x27
},8);
extern int EX_setup() {
int result = OK;
int fd = 0;
LG_logEntry(__func__, NULL);
/* Set data directions on a number of pins.
*
* SS - Slave select is output for PI
* REQEXC - Request exchange is output for PI
* ACKEXC - Acknowledge exchange request is input for PI.
*/
pinMode(SS, OUTPUT);
digitalWrite(SS, HIGH);
pinMode(REQEXC, OUTPUT);
digitalWrite(REQEXC, LOW);
pinMode(ACKEXC, INPUT);
/* Setup SPI channel and speed */
fd = wiringPiSPISetup(SPICHANNEL, SPISPEED);
result = (fd == -1) ? RV_EXCHANGE_SETUP_FAILED : OK;
LG_logExit(__func__, result, NULL);
return result;
}
void init(){
int byte;
unsigned char command[] = {
0xAE, 0xA8, 0x3F, 0xD3, 0x00, 0x40, 0xA1, 0xC8,
0xA6, 0xD5, 0x80, 0xDA, 0x12, 0x81, 0x00, 0xB0,
0xA4, 0xDB, 0x40, 0x20, 0x00, 0x00, 0x10, 0x8D,
0x14, 0x2E, 0xA6, 0xAF
};
for(byte=0;byte<1024;byte++){
frame[byte] = 0x00;
}
wiringPiSetup();
pinMode (5, OUTPUT) ;
pinMode (6, OUTPUT) ;
wiringPiSPISetup(0, 32*1000*1000);
digitalWrite(6, LOW) ;
delay(50);
digitalWrite(6, HIGH) ;
digitalWrite(5, LOW);
wiringPiSPIDataRW(0, command, 28);
}
int
main (int argc, char** argv)
{
int status = wiringPiSetupGpio();
if (status < 0)
{
printf ("Fail to setup wiringPi. Are you root?");
exit(1);
}
pinMode (24,INPUT);
wiringPiISR(24, INT_EDGE_FALLING, irq_handler);
status = wiringPiSPISetup(0,500000);
if (status < 0)
{
printf("Failed to configure SPI");
exit (1);
}
unsigned char buf [256];
pause();
while (1)
{
buf[0] = 0x07;
buf[1] = 0xff;
wiringPiSPIDataRW(0, buf, 2);
printf ("Output %d \n",buf[1]);
delay (1000);
}
}
int main (void)
{
uint8_t spiData [10] ;
// set interface speed
if (wiringPiSPISetup (0,100000) < 0)
{
fprintf (stderr, "Unable to open SPI device 0: %s\n", strerror (errno)) ;
exit (1) ;
}
wiringPiSetupSys() ;
wiringPiSetup() ;
/* setup output ports */
pinMode(8, OUTPUT); /* reset */
pinMode(9, OUTPUT); /* rs */
/* reset LCD display */
digitalWrite(8,0);
delayMicroseconds (100) ;
digitalWrite(8,1);
void write_cmd(int c)
{
digitalWrite(9,0); // set rs bit for cmd
spiData[0]=c;
wiringPiSPIDataRW (0, spiData, 1) ;
}
MCP2510::MCP2510(uint8_t csPin):_csPin(csPin){
// system("gpio load spi");
wiringPiSetup();
wiringPiSPISetup(_csPin,SPI_CLOCK_SPEED);
}
void setup (void)
{
int status = wiringPiSetupGpio();
if(status < 0)
{
perror ("Failed to configure GPIO");
exit (1);
}
pinMode (IRQ_PIN, INPUT);
pinMode (CE_PIN, OUTPUT);
status = wiringPiSPISetup (CHANNEL,SPEED);
if (status < 0)
{
perror ("Failed to configure SPI");
exit(1);
}
configure_address();
//TODO dynamic length nrf24l01_set_dynamic_payload_length(0, ENABLE);
configure_isr();
nrf24l01_set_rx_payload_length(1,32);
//nrf24l01_set_en_aa(1,ENABLE);
nrf24l01_set_dynamic_payload_length(1, ENABLE);
nrf24l01_power_up(ENABLE);
nrf24l01_mode(MODE_RX);
printf ("Configured\n");
}
bool ofApp::setupSensors() {
if (wiringPiSPISetup (0, 1000000) < 0)
return false;
else
return true;
}
int main(int argc, char **argv) {
if(wiringPiSetup() == -1) {
printf("wiringPiSetup() failed\n");
return EXIT_FAILURE;
}
// 540kHz speed - recomended by ST7920 spec
//if ((lcd_fd = wiringPiSPISetupMode(0, 540000, 0x07)) < 0) {
if ((lcd_fd = wiringPiSPISetup(0, 540000)) < 0) {
printf("Can't open the SPI bus\n");
return EXIT_FAILURE;
}
char mode = 0x07;
ioctl(lcd_fd, SPI_IOC_WR_MODE, &mode);
init_gpio();
reset_lcd();
init_lcd();
set_extended_mode(0, 0, 0);
set_extended_mode(0, 1, 1);
clear_lcd();
show_image(raspberry_pix);
return EXIT_SUCCESS;
}
void main(void){
struct tm *tm_ptr;
time_t the_time;
(void) time(&the_time);
tm_ptr = gmtime(&the_time);
printf("The Raw time is %ld\n", the_time);
/* fast timeb function for milliseconds */
struct timeb tmb;
struct timeb starttime;
struct timeb stoptime;
unsigned char buffer[4096];
int i;
for(i=0;i<4096;i++){
buffer[i]=0xAA;
}
/*
buffer[0]=0;
buffer[1]=1;
buffer[2]=2;
buffer[3]=3;
buffer[4]=4;
buffer[5]=0xAA;
buffer[6]=0x55;
*/
int channel=0;
if (wiringPiSPISetup (channel, 500000) < 0)
fprintf (stderr, "SPI Setup failed!\n");
printf("\n\nEntering SPI Comms:\n");
ftime(&starttime);
int j=0;
for(j=0; j<1; j++){
wiringPiSPIDataRW ( channel, &buffer, 4096) ;
}
ftime(&stoptime);
printf("seconds difference: %ld.%ld\n", stoptime.time-starttime.time);
printf("millis difference: %ld\n" , stoptime.millitm-starttime.millitm);
// Show each character as recieved
for(i=0;i<4096;i++){
printf("%d,0x%X\n", i, buffer[i]);
}
}
/**
* \brief Receive data from an EEPROM chip
*
* This receives data from an EEPROM using SPI BUS protocol
* \param[out] sg_serial Sansgrid data received
* \param[out] size Size of data received
* \param[in] ts Stub configuration to use
*/
int eepromReceive(SansgridSerial **sg_serial, uint32_t *size, TalkStub *ts) {
// Read from an EEPROM chip over SPI
int fd;
uint8_t buffer[sizeof(SansgridSerial)];
uint8_t newbuffer[sizeof(SansgridSerial)+3];
int i;
mark_point();
if (!ts->valid_read)
return 1;
mark_point();
if (!eeprom_lock_initd) {
pthread_mutex_init(&eeprom_lock, NULL);
eeprom_lock_initd = 1;
}
mark_point();
mark_point();
*size = sizeof(SansgridSerial);
mark_point();
sem_wait(&ts->writelock);
if (ts->eeprom_address == -1) {
return -1;
}
mark_point();
pthread_mutex_lock(&eeprom_lock);
// Set up reading from EEPROM
mark_point();
if ((fd = wiringPiSPISetup (0, MHZ(SPI_SPEED_MHZ))) < 0)
fprintf(stderr, "SPI Setup failed: %s\n", strerror (errno));
// Prepend command and address to buffer
newbuffer[0] = READ;
newbuffer[1] = ts->eeprom_address >> 8;
newbuffer[2] = ts->eeprom_address & 0xff;
// Send command/address, read data
wiringPiSPIDataRW(0, newbuffer, (*size)+3);
// shift the command and address out of buffer
for (i=0; i<*size; i++)
buffer[i] = newbuffer[i+3];
*sg_serial = (SansgridSerial*)malloc(sizeof(SansgridSerial));
memcpy(*sg_serial, buffer, sizeof(SansgridSerial));
// finish up
close(fd);
pthread_mutex_unlock(&eeprom_lock);
sem_post(&ts->readlock);
return 0;
}
void spiSetup (int spiChannel)
{
if ((myFd = wiringPiSPISetup (spiChannel, 1000000)) < 0)
{
fprintf (stderr, "Can't open the SPI bus: %s\n", strerror (errno)) ;
exit (EXIT_FAILURE) ;
}
}
void main(int argc, char** argv) {
if (wiringPiSPISetup(CHANNEL, 4000000) < 0) {
fprintf (stderr, "SPI Setup failed: %s\n", strerror (errno));
exit(errno);
}
printf("sample=%04x\n", sample(0));
}
void spiSetup (int speed)
{
if ((myFd = wiringPiSPISetup (SPI_CHAN, speed)) < 0)
{
fprintf (stderr, "Can't open the SPI bus: %s\n", strerror (errno)) ;
exit (EXIT_FAILURE) ;
}
}
static int remote_monitoring_init(void)
{
int result;
Lock_fd = open_lockfile(LOCKFILE);
if (setuid(getuid()) < 0)
{
perror("Dropping privileges failed. (did you use sudo?)n");
result = EXIT_FAILURE;
}
else
{
result = wiringPiSetup();
if (result != 0)
{
perror("Wiring Pi setup failed.");
}
else
{
result = wiringPiSPISetup(Spi_channel, Spi_clock);
if (result < 0)
{
printf("Can't setup SPI, error %i calling wiringPiSPISetup(%i, %i) %sn",
result, Spi_channel, Spi_clock, strerror(result));
}
else
{
int sensorResult = bme280_init(Spi_channel);
if (sensorResult != 1)
{
printf("It appears that no BMP280 module on Chip Enable %i is attached. Aborting.\n", Spi_channel);
result = 1;
}
else
{
// Read the Temp & Pressure module.
float tempC = -300.0;
float pressurePa = -300;
float humidityPct = -300;
sensorResult = bme280_read_sensors(&tempC, &pressurePa, &humidityPct);
if (sensorResult == 1)
{
printf("Temperature = %.1f *C Pressure = %.1f Pa Humidity = %1f %%\n",
tempC, pressurePa, humidityPct);
result = 0;
}
else
{
printf("Unable to read BME280 on pin %i. Aborting.\n", Spi_channel);
result = 1;
}
}
}
}
}
return result;
}
void* run_spi(void* arg){
dp_exchange_t* p = (dp_exchange_t*)(arg);
// Initialize SPI Device
int channel = 1;
int speed = 500000;
int fd = wiringPiSPISetup(channel, speed);
if (fd == -1) {
printf( "SPI Setup Error: %s\n", strerror(errno));
return NULL;
}
printf("SPI Device FD:\t%d\n", fd);
// Data Exchange Loop
while(1) {
// Commit Status
pthread_mutex_lock(&p->mutex);
// Consume Command
if (p->command.is_not_empty) {
// Debug Output: Say, what we got here
printf("\n\nSPI: Write to Pad %d\n", p->padnr);
if (p->command.is_rgb) {
printf(" Type:\tRGB data\n");
printf(" Data:\trgb(%d,%d,%d)\n",
p->command.rgb.r * 8,
p->command.rgb.g * 8,
p->command.rgb.b * 8);
} else {
printf(" Type:\tCommand\n");
printf(" Data:\tTODO");
}
printf(" Size:\t%d Bytes\n\n", sizeof(p->command.bytes));
// SPI Read and Write
unsigned char* data = p->command.bytes;
int ret = wiringPiSPIDataRW(channel, data, ARRAY_SIZE(data));
if (ret == -1) {
printf( "Error at SpiRW: %s\n", strerror(errno));
} else {
printf("Bytes Written:\t%d\n", ret);
printf("Resonse Data:\t%d, %d\n", data[0], data[1]);
// TODO Status entgegennehmen
}
// TODO Status Output
// Actually consume command by setting everything back to zero
p->command.is_not_empty = 0;
}
pthread_mutex_unlock(&p->mutex);
usleep(1000000);
}
return NULL;
}
int main(int argc, char **argv)
///////////////////////////////
{
unsigned char data, new_data;
int count, ok;
printf("poweroff version 1.0\n");
usleep(1000000); // let other processes finish
int spi = wiringPiSPISetup(1, 9600);
if (spi < 0) {
printf("Cannot initialize spi driver\n");
return 1;
}
// printf("spi handle = %d\n", spi);
// send 0xFF and receive current status of pi-top-hub
count = 0;
data = 0xff;
printf("Sending: 0x%X\n", data);
do {
data = 0xff;
ok = wiringPiSPIDataRW(1, &data, 1);
if (ok) {
ok &= analyze(data);
}
}
while ((!ok) && (count++ < MAXCOUNT));
if (ok) {
printf("Receiving: 0x%X\n", data);
printf("Current brightness = %d\n", brightness);
// check whether current brightness s within acceptable range
if (brightness > 10)
brightness = 10;
if (brightness < 3)
brightness = 3;
// calculate data to send
shutdown = 1;
screenoffbit = 0;
new_data = calculate();
// send new data twice
data = new_data;
printf("Sending: 0x%X\n", data);
wiringPiSPIDataRW(1, &data, 1);
data = new_data;
wiringPiSPIDataRW(1, &data, 1);
}
else
printf("reading current brightness not successful\n");
return 0;
}
/**
* \brief Prepare for SPI transfer (API)
*
* Note that to use this, you must have an int g_fd file descriptor
* that this can write to. You must close that file descriptor when
* transfer is done. You should use spiOpen(), which is a wrapper
* for this function that returns the file descriptor directly.
* \returns
* This function returns 0 on success, and -1 on failure. \n
* A global file descriptor is stored in the int g_fd field.
*/
int8_t sgSerialOpen(void) {
// Set up SPI
if ((g_fd = wiringPiSPISetup (0, KHZ(SPI_SPEED_KHZ))) < 0) {
syslog(LOG_ERR, "SPI Setup failed: %s\n", strerror (errno));
return -1;
} else {
return 0;
}
return 0;
}
int spi_openadapter(uint8_t spi_bus)
{
// spi_buses[spi_bus] = mraa_spi_init (spi_bus);
// return spi_bus;
int fd;
int id = getSPIId();
spi_freq[id] = SPI_DEFAULT_FREQ;
spi_channels[id] = spi_bus;
fd = wiringPiSPISetup (spi_bus, SPI_DEFAULT_FREQ);
spi_buses[id] = fd;
return id;
}
static ERL_NIF_TERM
spi_setup_nif(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
{
int channel, speed;
if (!enif_get_int(env, argv[0], &channel) ||
!enif_get_int(env, argv[1], &speed))
{
return enif_make_badarg(env);
}
int result = wiringPiSPISetup(channel, speed);
return enif_make_int(env, result);
}
void SPIListener::Setup()
{
// Get Events
EventSubMap eventsSPI = Daemon::EventList.find("SPI")->second;
EventSubMap::iterator it;
FromKeyMap events = TIEVoxInfo::Events.find("SPI")->second;
int code;
for (it = eventsSPI.begin(); it != eventsSPI.end(); ++it) {
code = events.find(it->second.EventName)->second;
// Add event to list by code
Events[code] = it->second;
// Setup car bus (16MHz)
wiringPiSPISetup(SPI_BUS_CAR, 16000000);
// Setup nRF24 bus (16MHz)
wiringPiSPISetup(SPI_BUS_RF, 16000000);
}
}
/**
* \brief Send data to an EEPROM chip
*
* This sends data to an EEPROM using SPI BUS protocol
* \param[in] buffer Data to send
* \param[in] address EEPROM address to write to
* \param[in] size Number of bytes to write
* \returns
* On error, returns -1. \n
* Otherwise returns 0
*/
static int eepromSendData(uint8_t *buffer, uint16_t address, int size) {
// Set up SPI
int i;
int fd;
// only 32 bytes can be written at a time; see below
int bounded_size = (size > 32 ? 32 : size);
// prepend the command and address to the data
uint8_t newbuffer[bounded_size+3];
struct timespec required, remaining;
int excode;
if ((fd = wiringPiSPISetup (0, MHZ(SPI_SPEED_MHZ))) < 0)
fprintf(stderr, "SPI Setup failed: %s\n", strerror (errno));
// Have to make room for command and address
for (i=3; i<bounded_size+3; i++)
newbuffer[i] = buffer[i-3];
// Allow writes to the EEPROM
// Has to be done before every write cycle
newbuffer[0] = WRITE_ENABLE;
write(fd, newbuffer, 1);
// Write to specified address
newbuffer[0] = WRITE;
newbuffer[1] = address >> 8;
newbuffer[2] = address & 0xff;
//printf("Writing to %x\n", address);
write(fd, newbuffer, bounded_size+3);
close(fd);
// Wait for the write to cycle
required.tv_sec = 0;
required.tv_nsec = 1000L*WRITE_CYCLE;
do {
if ((excode = nanosleep(&required, &remaining)) == -1) {
if (errno == EINTR)
required.tv_nsec = remaining.tv_nsec;
else
return -1;
}
} while (excode);
if (size > 32) {
// Only one page (of 32 bytes) can be written
// at a time. If more than 32 bytes are being written,
// break the line into multiple pages
return eepromSendData(&buffer[32], address+0x0020, size-32);
}
return 0;
}
uint8_t u8g_com_raspberrypi_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr)
{
switch(msg)
{
case U8G_COM_MSG_STOP:
break;
case U8G_COM_MSG_INIT:
// check wiringPi setup
if (wiringPiSetup() == -1)
{
printf("wiringPi-Error\n");
exit(1);
}
if (wiringPiSPISetup (0, 100000) < 0)
{
printf ("Unable to open SPI device 0: %s\n", strerror (errno)) ;
exit (1) ;
}
u8g_SetPIOutput(u8g, U8G_PI_RESET);
u8g_SetPIOutput(u8g, U8G_PI_A0);
break;
case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
u8g_SetPILevel(u8g, U8G_PI_A0, arg_val);
break;
case U8G_COM_MSG_CHIP_SELECT:
/* Done by the SPI hardware */
break;
case U8G_COM_MSG_RESET:
u8g_SetPILevel(u8g, U8G_PI_RESET, arg_val);
break;
case U8G_COM_MSG_WRITE_BYTE:
wiringPiSPIDataRW (0, &arg_val, 1) ;
break;
case U8G_COM_MSG_WRITE_SEQ:
wiringPiSPIDataRW (0, arg_ptr, arg_val);
break;
case U8G_COM_MSG_WRITE_SEQ_P:
wiringPiSPIDataRW (0, arg_ptr, arg_val);
break;
}
return 1;
}
void init(){
rd_data.code = RD_CODE;
wr_data.code = WR_CODE;
pinMode(REQ, OUTPUT);digitalWrite(REQ, LOW);
pinMode(WR, OUTPUT);digitalWrite(WR, LOW);
pinMode(PER, INPUT);
pinMode(INFO, INPUT);
pinMode(REQ, OUTPUT);digitalWrite(REQ, LOW);
pinMode(WR, OUTPUT);digitalWrite(WR, LOW);
// pinMode(CS, OUTPUT);digitalWrite(CS, HIGH);
wiringPiSPISetup (CHANNEL, SPI_SPEED);
}
int main(int argc, char *argv[])
{
int i, delay_ms;
uint32_t x1;
int print_output;
printf ("SPI test program\n") ;
// initialize the WiringPi API
if (wiringPiSPISetup (0, 1000000) < 0)
return -1 ;
if (argc>2)
print_output = 0;
else
print_output = 1;
// get the channel to read, default to 0
if (argc>1)
delay_ms = atoi(argv[1]);
else
delay_ms = 1; //we don't use this here...
int counter_wrap = 100;
if (delay_ms != 0) counter_wrap = 500/delay_ms;
int counter = 0;
// run until killed with Ctrl-C
while (1)
{
counter++;
// read data and add to total
int chan;
for (chan = 0; chan<8; chan++)
{
x1 = readadc(chan);
if (print_output)
{
if (counter > counter_wrap)
{
printf("CH %i val= %d ", chan, x1);
}
}
}
if (counter > counter_wrap)
{
if (print_output)
printf("\n");
counter = 0;
}
delay(delay_ms);
}
return 0 ;
}
int main(int argc, char** argv) {
if (fd = wiringPiSPISetup (CHANNEL, 1000000) < 0) {
fprintf (stderr, "SPI Setup failed: %s\n", strerror (errno));
return 1;
}
while(1) {
fd = wiringPiSPIDataRW(CHANNEL, buff, 1);
printf("%i\n", *buff);
delay(1000);
}
return (EXIT_SUCCESS);
}
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 ;
}
