void Rf24RaspberryPiIo::select() {
bcm2835_spi_setBitOrder(RF24_BIT_ORDER);
bcm2835_spi_setDataMode(RF24_DATA_MODE);
bcm2835_spi_setClockDivider(spi_speed ? spi_speed : RF24_CLOCK_DIVIDER);
bcm2835_spi_chipSelect(csn_pin);
delayMicroseconds(5);
}
SpiPlateformImplementation::SpiPlateformImplementation( SpiChipSelect cs):
_cs( cs )
{
if( s_count++ == 0)
{
printf("\n SPI INIT");
#ifdef TARGET_RASPBERRY_PI
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST);
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0);
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_4096);
bcm2835_spi_chipSelect(BCM2835_SPI_CS0);
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW);
#endif
/*
setBitOrder( SpiMSB );
setDataMode( SpiMode_0);
setClockDivider( SPI_CLOCK_DIVIDER_4096);
setChipSelect( _cs );
setCsPolarity( low );
*/
}
}
void Rfid::init_rfid(void)
{
if(geteuid()!=0 || getenv("FAKEROOTKEY"))
{
(*_pLinkToConsole)->printOut("You need to be root to properly run this program");
throw "You need to be root to properly run this program";
}
if(!bcm2835_init())
{
(*_pLinkToConsole)->printOut("Not able to initialize BCM2835");
throw "Not able to initialize BCM2835";
}
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); // default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_32); // default
bcm2835_spi_chipSelect(BCM2835_SPI_CS0); // default
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW); // default
/*
uid_t uid=500;
setuid(uid);
*/
InitRc522();
}
int main(int argc, char **argv) {
if (!bcm2835_init())
return 1;
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST);
bcm2835_spi_setDataMode(BCM2835_SPI_MODE1);
bcm2835_spi_setClockDivider(2170-200);
bcm2835_spi_chipSelect(BCM2835_SPI_CS0);
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW);
volatile uint32_t* paddr = bcm2835_spi0 + BCM2835_SPI0_CS/4;
bcm2835_peri_set_bits(paddr, BCM2835_SPI0_CS_LEN, BCM2835_SPI0_CS_LEN); //make it 9 bit
volatile uint32_t* ltoh = bcm2835_spi0+BCM2835_SPI0_LTOH/4;
bcm2835_peri_set_bits(ltoh,0b1111,0);
unsigned int i='a';
while(1) {
for(char c='a';c<='z';c++) {
spi_uart_tx(c);
spi_uart_tx(' ');
}
spi_uart_tx('\n');
// bcm2835_delay(10);
// printf(" ");
}
bcm2835_spi_end();
bcm2835_close();
return 0;
}
int main(int argc, char **argv)
{
// If you call this, it will not actually access the GPIO
// Use for testing
// bcm2835_set_debug(1);
if (!bcm2835_init())
{
return 1;
}
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); // The default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_65536); // The default
bcm2835_spi_chipSelect(BCM2835_SPI_CS0); // The default
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW); // the default
int i;
for( i = 0; i < 100; i++ )
{
// Send a byte to the slave and simultaneously read a byte back from the slave
// If you tie MISO to MOSI, you should read back what was sent
uint8_t data = bcm2835_spi_transfer(i);
printf("Wrote: %02X Read from SPI: %02X\n", i, data);
}
bcm2835_spi_end();
bcm2835_close();
return 0;
}
void VM205::connect() {
bcm2835_spi_begin();
bcm2835_spi_setDataMode(BCM2835_SPI_MODE2);
bcm2835_spi_chipSelect(BCM2835_SPI_CS0);
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST);
bcm2835_spi_setClockDivider(500);
}
/*
* Function: spi_test
* Description: be used to test SPI related functions by using the AT450BXX module
*
* host slave
* MISO < - > MISO
* MOSI < - > MOSI
* CLK < - > CLK
* CE0/1 < - > CS
*/
void spi_test(void)
{
int num;
unsigned char wBuf = 0x3f;
unsigned char rBuf;
printf("--------------->Test SPI With AT450BXX<--------------\n");
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); // The default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_64);
//bcm2835_spi_chipSelect(BCM2835_SPI_CS0);
//bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, HIGH);
bcm2835_gpio_fsel(PIN_CS, BCM2835_GPIO_FSEL_OUTP); /*set CS, and must be called*/
printf("SPI write 0x%x\n", wBuf);
ee_write(0,wBuf);
bcm2835_delay(50);
rBuf = ee_read(0);
printf("SPI read 0x%x\n", rBuf);
if(wBuf == rBuf)
{
printf("SPI interface work well !...\n");
}
else
{
printf("SPI interface work bad !...\n");
}
bcm2835_spi_end();
}
// initializer for SPI - we indicate the pins used and OLED type
//
boolean ArduiPi_OLED::init(int8_t DC, int8_t RST, int8_t CS, uint8_t OLED_TYPE)
{
rst = RST==OLED_PIN_DEFAULT ? DEF_SPI_RESET : RST; // Reset Pin
dc = DC ==OLED_PIN_DEFAULT ? DEF_SPI_DC : DC; // Data / command Pin
cs = CS ==OLED_PIN_DEFAULT ? DEF_SPI_CS : (
CS ==OLED_CS_ALTERNATE ? ALT_SPI_CS : CS); // Raspberry SPI chip Enable (may be CE0 or CE1)
// Select OLED parameters
if (!select_oled(OLED_TYPE))
return false;
// Init & Configure Raspberry PI SPI
bcm2835_spi_begin(cs);
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST);
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0);
// 16 MHz SPI bus, but Worked at 62 MHz also
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_16);
// Set the pin that will control DC as output
bcm2835_gpio_fsel(dc, BCM2835_GPIO_FSEL_OUTP);
// Setup reset pin direction as output
if (rst >= 0)
bcm2835_gpio_fsel(rst, BCM2835_GPIO_FSEL_OUTP);
return ( true);
}
void init_touch_spi(void)
{
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE3); // The default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_256); // The default
}
//
// Set up a memory regions to access GPIO
//
void setup_io()
{
/* open /dev/mem */
if ((mem_fd = open("/dev/mem", O_RDWR|O_SYNC) ) < 0) {
printf("can't open /dev/mem \n");
exit(-1);
}
/* mmap GPIO */
gpio_map = mmap(
NULL, //Any adddress in our space will do
BLOCK_SIZE, //Map length
PROT_READ|PROT_WRITE,// Enable reading & writting to mapped memory
MAP_SHARED, //Shared with other processes
mem_fd, //File to map
GPIO_BASE //Offset to GPIO peripheral
);
if (gpio_map == MAP_FAILED) {
printf("mmap error %d\n", (int)gpio_map);//errno also set!
exit(-1);
}
// Always use volatile pointer!
gpio = (volatile unsigned *)gpio_map;
#define CLK_LEN 0xA8
gpio_map = mmap(
NULL, //Any adddress in our space will do
CLK_LEN, //Map length
PROT_READ|PROT_WRITE,// Enable reading & writting to mapped memory
MAP_SHARED, //Shared with other processes
mem_fd, //File to map
CLOCK_BASE //Offset to GPIO peripheral
);
if (gpio_map == MAP_FAILED) {
printf("mmap error %d\n", (int)gpio_map);//errno also set!
exit(-1);
}
// Always use volatile pointer!
clkReg = (volatile unsigned *)gpio_map;
close(mem_fd); //No need to keep mem_fd open after mmap
if (!bcm2835_init())
{
printf("bcm2835_init error\n");
exit(-1);
}
#if 0
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); // The default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_4);
bcm2835_spi_chipSelect(BCM2835_SPI_CS0); // The default
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW); // the default
#endif
} // setup_io
void SpiPlateformImplementation::setBitOrder ( SpiBitOrder order)
{
// if (order != s_order)
{
s_order = order;
#ifdef TARGET_RASPBERRY_PI
bcm2835_spi_setBitOrder( s_order);
#endif
}
}
int spi_init() {
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); // The default
//bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_65536); // The default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_256); // The default
bcm2835_spi_chipSelect(BCM2835_SPI_CS0); // The default
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW); // the default
return 0;
}
/**
*@brief Initializes the SPI peripheral
*@return none
*/
void SPI_Initialize(void)
{ if (!bcm2835_init())
{
printf("BCM libray error.\n"); //Should be run with the sudo cmd
}
bcm2835_spi_begin(); //Configure SPI pins
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); //Configure bit order
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); //Set clock polarity and phase CPOL=0, CPHA=0
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_4); //SPI baud rate at 244 Khz
bcm2835_spi_chipSelect(BCM2835_SPI_CS_NONE); //Control CE0 in software
printf("SPI initialized...\n");
}
// initialization of GPIO and SPI
// ----------------------------------------------------------
void TFT_init_board ( void )
{
// *************** set the pins to be an output and turn them on
bcm2835_gpio_fsel( OE, BCM2835_GPIO_FSEL_OUTP );
bcm2835_gpio_write( OE, HIGH );
bcm2835_gpio_fsel( RAIO_RST, BCM2835_GPIO_FSEL_OUTP );
bcm2835_gpio_write( RAIO_RST, HIGH );
bcm2835_gpio_fsel( RAIO_CS, BCM2835_GPIO_FSEL_OUTP );
bcm2835_gpio_write( RAIO_CS, HIGH );
bcm2835_gpio_fsel( RAIO_RS, BCM2835_GPIO_FSEL_OUTP );
bcm2835_gpio_write( RAIO_RS, HIGH );
bcm2835_gpio_fsel( RAIO_WR, BCM2835_GPIO_FSEL_OUTP );
bcm2835_gpio_write( RAIO_WR, HIGH );
bcm2835_gpio_fsel( RAIO_RD, BCM2835_GPIO_FSEL_OUTP );
bcm2835_gpio_write( RAIO_RD, HIGH );
// *************** now the inputs
bcm2835_gpio_fsel( RAIO_WAIT, BCM2835_GPIO_FSEL_INPT );
bcm2835_gpio_set_pud( RAIO_WAIT, BCM2835_GPIO_PUD_UP);
bcm2835_gpio_fsel( RAIO_INT, BCM2835_GPIO_FSEL_INPT );
bcm2835_gpio_set_pud( RAIO_INT, BCM2835_GPIO_PUD_UP);
// *************** set pins for SPI
bcm2835_gpio_fsel(MISO, BCM2835_GPIO_FSEL_ALT0);
bcm2835_gpio_fsel(MOSI, BCM2835_GPIO_FSEL_ALT0);
bcm2835_gpio_fsel(SCLK, BCM2835_GPIO_FSEL_ALT0);
bcm2835_gpio_fsel(SPI_CE1, BCM2835_GPIO_FSEL_ALT0);
// set the SPI CS register to the some sensible defaults
volatile uint32_t* paddr = bcm2835_spi0 + BCM2835_SPI0_CS/8;
bcm2835_peri_write( paddr, 0 ); // All 0s
// clear TX and RX fifos
bcm2835_peri_write_nb( paddr, BCM2835_SPI0_CS_CLEAR );
bcm2835_spi_setBitOrder( BCM2835_SPI_BIT_ORDER_MSBFIRST );
bcm2835_spi_setDataMode( BCM2835_SPI_MODE0 );
bcm2835_spi_setClockDivider( BCM2835_SPI_CLOCK_DIVIDER_2 );
bcm2835_spi_chipSelect( BCM2835_SPI_CS1 );
bcm2835_spi_setChipSelectPolarity( BCM2835_SPI_CS1, LOW );
}
/**************************************************************************
Function: spi_lcd_init
Purpose: Initialize SPI device
Returns:
Note: Sets defaults
*************************************************************************/
int spi_lcd_init(struct spi_lcd_dev *dev)
{
// wait for 100ms for power up delay - could probably skip this.
bcm2835_delay(100);
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST);
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0);
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_65536);
bcm2835_spi_chipSeclect(BCM2835_SPI_CS0);
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0,LOW);
return 0;
}
/*!
* Start the SPI communication
*/
void EcgCapture::spiInit()
{
bcm2835_gpio_fsel(PIN18, BCM2835_GPIO_FSEL_OUTP);
bcm2835_gpio_write(PIN18, LOW);
delay(100);
bcm2835_gpio_write(PIN18, HIGH);
delay(100);
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST);
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0);
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_512);
bcm2835_spi_chipSelect(BCM2835_SPI_CS0);
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW);
bcm2835_gpio_fsel(PIN16, BCM2835_GPIO_FSEL_INPT);
}
MPU9250::MPU9250()
{
if (!bcm2835_init())
{
printf("bcm2835_init failed. Are you running as root??\n");
}
if (!bcm2835_spi_begin())
{
printf("bcm2835_spi_begin failedg. Are you running as root??\n");
}
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); // The default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_16); // The default
bcm2835_spi_setChipSelectPolarity(MPU9250_PIN, LOW); // the default
bcm2835_spi_chipSelect(MPU9250_PIN); // The default
}
void main(int argc, char* argv)
{
/* Pour le debugging
1 == Print sur la console les operations des fonctions
0 == Comportement normal du programme */
bcm2835_set_debug(0);
/* Initialisation de la librairie */
if(bcm2835_close())
{
/* code d'initialisation bcm */
printf("Version de la librairie : %d", bcm2835_version());
if(bcm2835_spi_begin())
{
/* Initialisation de la SPI
Voir header pour valeurs */
bcm2835_spi_setClockDivider(CLK_SPEED);
bcm2835_spi_setDataMode(PI_MODE);
bcm2835_spi_setBitOrder(BIT_ORDER);
/* Selecte un CS pour le transfert de donnees */
bcm2835_spi_chipSelect(CS_SLAVE);
/* Test de transfert avec retour */
uint8_t ret;
ret = bcm2835_spi_transfer(5);
printf("Retour de l'Arduino : %d", ret);
/* Test de transfert sans retour */
bcm2835_spi_transfern("A", 1);
bcm2835_spi_end();
}
else
{
printf("Erreur de l'init de SPI\n");
}
bcm2835_close(void); /* Libere la memoire et ferme la librairie */
}
else
{
printf("Echec de l'ouverture de la librairie\n");
}
}
int DIS_init() {
if (!bcm2835_init())
return 1;
bcm2835_gpio_fsel(DIS_CS1, BCM2835_GPIO_FSEL_OUTP);
bcm2835_gpio_fsel(DIS_CS2, BCM2835_GPIO_FSEL_OUTP);
bcm2835_gpio_fsel(DIS_CS3, BCM2835_GPIO_FSEL_OUTP);
bcm2835_gpio_fsel(DIS_CS4, BCM2835_GPIO_FSEL_OUTP);
chipSelect(DIS_NONE);
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST);
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0);
bcm2835_spi_setClockDivider(DIS_CLOCK_DIVIDER);
bcm2835_spi_chipSelect(BCM2835_SPI_CS_NONE);
return 0;
}
void RF24::csn(bool mode)
{
// Minimum ideal SPI bus speed is 2x data rate
// If we assume 2Mbs data rate and 16Mhz clock, a
// divider of 4 is the minimum we want.
// CLK:BUS 8Mhz:2Mhz, 16Mhz:4Mhz, or 20Mhz:5Mhz
#ifdef ARDUINO
#if ( !defined(RF24_TINY) && !defined (__arm__) && !defined (SOFTSPI)) || defined (CORE_TEENSY)
_SPI.setBitOrder(MSBFIRST);
_SPI.setDataMode(SPI_MODE0);
_SPI.setClockDivider(SPI_CLOCK_DIV2);
#endif
#endif
#if defined (RF24_LINUX)
#if !defined (RF24_SPIDEV)
//if(!mode){
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST);
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0);
bcm2835_spi_setClockDivider(spi_speed);
bcm2835_spi_chipSelect(csn_pin);
delayMicroseconds(5);
#endif
#elif defined (RF24_TINY)
if (ce_pin != csn_pin) {
digitalWrite(csn_pin,mode);
}
else {
if (mode == HIGH) {
PORTB |= (1<<PINB2); // SCK->CSN HIGH
delayMicroseconds(100); // allow csn to settle.
}
else {
PORTB &= ~(1<<PINB2); // SCK->CSN LOW
delayMicroseconds(11); // allow csn to settle
}
}
#elif !defined (__arm__) || defined (CORE_TEENSY)
digitalWrite(csn_pin,mode);
delayMicroseconds(5);
#endif
}
void init_lcd_spi(void)
{
bcm2835_init();
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE3); // The default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_256); // The default
bcm2835_gpio_fsel(RPI_GPIO_P1_16, BCM2835_GPIO_FSEL_OUTP);
bcm2835_gpio_fsel(RPI_GPIO_P1_22, BCM2835_GPIO_FSEL_OUTP);
bcm2835_gpio_fsel(RPI_GPIO_P1_24, BCM2835_GPIO_FSEL_OUTP);
bcm2835_gpio_fsel(RPI_GPIO_P1_26, BCM2835_GPIO_FSEL_OUTP);
bcm2835_gpio_fsel(PENIRQ, BCM2835_GPIO_FSEL_INPT);
bcm2835_gpio_set_pud(PENIRQ, BCM2835_GPIO_PUD_UP);///////////////////////
printf("\n spi-lcd22 test :\n Start .......\n ");
}
int main(int argc, char **argv)
{
if (!bcm2835_init())
return 1;
char buffer[4];
buffer[0] = 50;
int i,temp;
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST);
bcm2835_spi_setDataMode(BCM2835_SPI_MODE3); //SCLK rising edge - clock idle state 1
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_65536); //set clock frequency
bcm2835_spi_chipSelect(BCM2835_SPI_CS1); //use chip select 1
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS1, LOW); //chip select 0 to activate
buffer[0]=buffer[1]=buffer[2]=buffer[3]=0;
//bcm2835_spi_transfern(buffer,4);
buffer[0] = 0x58; //read the id
bcm2835_spi_transfern(buffer,2);
printf("id:%02X\n",buffer[1]);
while(1)
{
buffer[0] = 0x50; //read the temp
bcm2835_spi_transfern(buffer,3);
printf("status %02X %02X\n",buffer[1],buffer[2]);
temp = buffer[1];
temp = temp<<8;
temp = temp + ( buffer[2] & 0xF8);
printf("status %08x\n",temp);
temp = temp>>3;
temp = temp/16;
printf("temp:%d\n",temp);
sleep(1);
}
bcm2835_spi_end();
bcm2835_close();
return 0;
}
int main(int argc, char **argv) {
if (!bcm2835_init()) {
printf("oops, could not init bcm2835\n");
return 1;
} else {
printf("Initialized");
}
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); // The default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_1024); // ~ 4 MHz
bcm2835_spi_chipSelect(BCM2835_SPI_CS0); // The default
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW); // the default
uint8_t mosi[12] = { 0x60, 0x00 };
uint8_t miso[12] = { 0 };
printf("Starting");
int data[30000];
for (int i = 0; i < 30000; i++) {
bcm2835_spi_transfernb(mosi, miso, 2);
//
// printf("%d\n", miso[1] + ((miso[0] & 3) << 8));
// data[i] = miso[1] + ((miso[0] & 3) << 10);
data[i] = miso[1] + miso[0];
}
bcm2835_spi_end();
bcm2835_close();
FILE *fp=fopen("output2.csv","wr");
for(int i=0;i<30000;i++) {
fprintf(fp,"%d,\n",data[i]);
}
fclose(fp);
return 0;
}
/**
* Constructor of an SPICom instance. Initializes the CS0 settings by default
*/
SPICom::SPICom(bcm2835SPIClockDivider clockCS0, bcm2835SPIClockDivider clockCS1) {
cout << "Initialising SPI object" << endl;
this->clockCS0 = clockCS0;
this->clockCS1 = clockCS1;
this->chipSelect = BCM2835_SPI_CS0;
if (!bcm2835_init())
cerr << "Error during initialization of bcm2835 library!!";
if (!bcm2835Initialized)
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST);
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0);
bcm2835_spi_setClockDivider(clockCS0);
bcm2835_spi_chipSelect(BCM2835_SPI_CS0);
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW);
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS1, LOW);
uint8_t readData = CS0_transfer('H'); //Send RPi heartbeat char 'H'
if (readData != 'h') {
cout << "Arduino doesnt have 'h' in SPDR .. waiting 3ms" << "\n";
cerr << "instead it has: " << readData << "\n";
usleep(3000); // Wait 3ms if no comm with Arduino
readData = CS0_transfer('H'); //Send RPI heartbeat char 'H'
if (readData != 'h') {
cerr << "Arduino again doesnt have 'h' in SPDR .. Aborting communication" << "\n";
cerr << "instead it has: " << readData << "\n";
throw "SPI initializazion error";
}
}
readData = CS0_transfer('E'); //Send RPi EOT
cout << "Arduino communication initialized\n";
time = micros();
}
uint8_t HW_init(uint32_t spi_speed, uint8_t gpio) {
uint16_t sp;
sp=(uint16_t)(250000L/spi_speed);
if (!bcm2835_init()) {
fprintf(stderr, "Can't init bcm2835!\n");
return 1;
}
if (gpio<28) {
bcm2835_gpio_fsel(gpio, BCM2835_GPIO_FSEL_OUTP);
bcm2835_gpio_write(gpio, LOW);
}
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); // The default
bcm2835_spi_setClockDivider(sp); // The default
bcm2835_spi_chipSelect(BCM2835_SPI_CS0); // The default
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW); // the default
return 0;
}
int mcp3008_adc_read(uint8_t single_diff, uint8_t channel, uint16_t *adcout) {
if(single_diff != MCP3008_ADC_SINGLE && single_diff != MCP3008_ADC_DIFF )
return -1;
if(channel > ADC_7 )
return -1;
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE3); // The default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_1024); // ~ 4 MHz
bcm2835_spi_chipSelect(BCM2835_SPI_CS_NONE); //
// Active the CS pin
MCP3008_CS_CLR;
// SleepMs(1);
uint8_t tx[10] = { MCP3008_SPI_START_BYTE, (single_diff|channel)<<4 };
uint8_t rx[10] = { 0 };
bcm2835_spi_transfernb(tx, rx, 3);
bcm2835_spi_end();
// 0100 aaa r/w
MCP3008_CS_SET;
*adcout = ((rx[1]&0x03) << 8) | rx[2];
return (EXIT_SUCCESS);
}
void
wiring_init()
{
if (!bcm2835_init()) {
printf("bcm2835 init failed\n");
exit(errno);
}
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); // The default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_64); // 4Mhz clock
bcm2835_spi_chipSelect(BCM2835_SPI_CS0); // The default
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW); // the default
bcm2835_gpio_fsel(WIRING_NRF_PROG_PIN, BCM2835_GPIO_FSEL_OUTP);
bcm2835_gpio_fsel(WIRING_NRF_RESET_PIN, BCM2835_GPIO_FSEL_OUTP);
}
int main(int argc, char *argv[])
{
if (1 == argc) {
printf("Enter text as an argument.\n");
return 1;
}
if (!bcm2835_init()) {
printf("Unable to init bcm2835.\n");
return 2;
}
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); // The default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_256); // The default
bcm2835_gpio_fsel(Max7219_pinCS, BCM2835_GPIO_FSEL_OUTP);
bcm2835_gpio_write(disp1[0][0],HIGH);
Delay_xms(50);
Init_MAX7219();
size_t index = 0;
while (index < strlen(argv[1])) {
// Retrive first letter
char letter1 = toupper(argv[1][index]);
index++;
// Retrieve second letter
// If it does not exist use space
char letter2 = (index < strlen(argv[1])) ? toupper(argv[1][index]) : (char) 0;
led_print(find_char(letter1), find_char(letter2));
Delay_xms(1000);
index++;
}
// Clear screen
led_print(36, 36);
bcm2835_spi_end();
bcm2835_close();
return 0;
}
int main(int argc, char **argv)
{
if (!bcm2835_init()) {
printf("bcm2835_init failed. Are you running as root??\n");
} else if (!bcm2835_spi_begin()) {
printf("bcm2835_spi_begin failed\n");
} else {
// List of all CS line where module can be connected
// GPIO6, GPIO8/CE0, GPIO7/CE1, GPIO26
uint8_t CS_pins[] = {6, 7, 8, 26};
uint8_t i;
// Init SPI
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // The default
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); // The default
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_65536); // The default
// We control CS line manually don't assert CEx line!
bcm2835_spi_chipSelect(BCM2835_SPI_CS_NONE);
// Drive all CS line as output and set them High to avoid any conflict
for ( i=0; i<sizeof(CS_pins); i++) {
bcm2835_gpio_fsel (CS_pins[i], BCM2835_GPIO_FSEL_OUTP );
bcm2835_gpio_write(CS_pins[i], 1 );
}
// Now try to detect all modules
for ( i=0; i<sizeof(CS_pins); i++) {
readModuleVersion( CS_pins[i] );
}
bcm2835_spi_end();
}
bcm2835_close();
}
/*
Name: spi_open
Description: Init bcm2835 lib & config SPI . Print to stdout bcm2835 lib version
Parameters:
Returns:
0 - on success, non-zero - fail
*/
int spi_open(void) {
int r;
uint32_t v;
r = bcm2835_init(); // return 0 on fail
if (r != 1) return -1;
bcm2835_spi_begin();
bcm2835_spi_setBitOrder(BCM2835_SPI_BIT_ORDER_MSBFIRST); // MSB bit goes first
bcm2835_spi_setDataMode(BCM2835_SPI_MODE0); // mode 0
bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_8); // SPI_CLK 31.25MHz - MAX
//bcm2835_spi_setClockDivider(BCM2835_SPI_CLOCK_DIVIDER_64);
bcm2835_spi_chipSelect(BCM2835_SPI_CS1); // CS1 - for now, with TP CS0 will be used too
// setup both SPI.CSx
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS0, LOW); // CS0 - active Low
bcm2835_spi_setChipSelectPolarity(BCM2835_SPI_CS1, LOW); // CS1 - active Low
v = bcm2835_version();
fprintf(stdout, "bcm2835 library version: %u (0x%08x)\n", v,v);
return 0; // OK!
}
