int main(void)
{
int cnt = 0;
unsigned level = LOW;
wiringPiSetupSys();
pcf8574Setup(BASE_8574, ADDR_I2C_8574);
for (cnt = 0; cnt < NUM_IO_8574; cnt++)
{
pinMode(BASE_8574 + cnt, OUTPUT);
}
for(;;)
{
level = LOW;
for (cnt = 0; cnt < NUM_IO_8574; cnt++)
{
digitalWrite(BASE_8574 + cnt, level);
if ((cnt + 1) % NUM_IO_8574 / 2 == 0)
{
level = (level == LOW) ? HIGH : LOW;
}
}
delay(500);
}
return EXIT_SUCCESS;
}
static int doExtensionPcf8574 (char *progName, int pinBase, char *params)
{
int i2c ;
if ((params = extractInt (progName, params, &i2c)) == NULL)
return FALSE ;
if ((i2c < 0x03) || (i2c > 0x77))
{
verbError ("%s: i2c address (0x%X) out of range", progName, i2c) ;
return FALSE ;
}
pcf8574Setup (pinBase, i2c) ;
return TRUE ;
}
void Driver::setup_pcf()
{
pcf8574Setup(100,0x20);
pcf8574Setup(200,0x21);
pcf8574Setup(300,0x22);
pcf8574Setup(400,0x23);
pcf8574Setup(500,0x24);
pcf8574Setup(600,0x25);
pcf8574Setup(700,0x26);
pcf8574Setup(800,0x27);
for(int i=1; i<9;i++)
{
for (int j=0; j<8;j++)
{
pinMode(i*100+j,INPUT);
}
}
}
void ScanI2CBus() {
int i;
char buff[200];
// najpierw szukamy expanderów i2c na pcf8574
for (i = 0; i < 4; i++) { // zakładamy 4 ekspandery max
hardware.i2c_PCF8574[i].fd = wiringPiI2CSetup (PCF8574_BASE_ADDR+i);
// nie ma innego (?) sposobu na potwierdzenie czy urządzenie istnieje niż próba zapisu
hardware.i2c_PCF8574[i].state = wiringPiI2CWrite (hardware.i2c_PCF8574[i].fd, wiringPiI2CRead(hardware.i2c_PCF8574[i].fd));
if (hardware.i2c_PCF8574[i].state != -1) {
sprintf(buff,"Wykryty osprzęt: Expander pcf8574 o adresie %#x",PCF8574_BASE_ADDR+i);
Log(buff,E_DEV);
// dodatkowe porty trzeba zarejestrować
pcf8574Setup (PCF8574_BASE_PIN+i*8,PCF8574_BASE_ADDR+i) ;
}
}
//sprawdzamy czy jest obecne MinipH
hardware.i2c_MinipH.fd = wiringPiI2CSetup(MINIPH_ADDR);
hardware.i2c_MinipH.state = wiringPiI2CReadReg16(hardware.i2c_MinipH.fd, 0 );
if (hardware.i2c_MinipH.state != -1) {
Log("Wykryty osprzęt: Mostek pomiarowy MinipH",E_DEV);
}
}
int main(int argc, char *argv[]) {
struct tm *t;
time_t tim;
char buf[32];
const char* programName = argv[0];
const char* displayMessage = argv[1];
if(argc < 2) {
fprintf(stderr, "Usage: %s display_message\n", programName);
return -1;
}
/* initialize WiringPi */
wiringPiSetupSys();
/* initalize LCD */
lcdHandle = lcdInit(ROWS, COLUMNS, 4, AF_RS, AF_E, AF_D1, AF_D2, AF_D3, AF_D4, 0, 0, 0, 0);
if(lcdHandle < 0) {
fprintf(stderr, "lcdInit failed\n");
return -1;
}
/* initalize PCF8574 module, NOTE that the device address must be right & can be acquired by "i2cdetect -y 1" command */
pcf8574Setup(AF_BASE, 0x3f);
/* turn on LCD backlight */
pinMode(AF_BL, OUTPUT);
digitalWrite(AF_BL, 1);
/* set LCD into write mode */
pinMode(AF_RW, OUTPUT);
digitalWrite(AF_RW, 0);
/* then we start to display various messages on the LCD screen */
lcdClear(lcdHandle); // clear the screen
lcdPosition(lcdHandle, 3, 0); // set the cursor on the the 4th column & 1st row
lcdPuts(lcdHandle, "RPi"); // print the text on the LCD at current cursor postion
lcdPosition(lcdHandle, 4, 1); // set the cursor on the the 5th column & 2nd row
lcdPuts(lcdHandle, "codelast");
waitForEnter();
lcdClear(lcdHandle); // clear the screen
lcdPosition(lcdHandle, 0, 0); // set the cursor on the 1st column & 1st row
lcdCursor(lcdHandle, true); // turn the cursor on
lcdCursorBlink(lcdHandle, true); // turn the cursor blink on
waitForEnter();
lcdCursor(lcdHandle, false); // turn the cursor off
lcdCursorBlink(lcdHandle, false); // turn the cursor blink off
lcdClear(lcdHandle); // clear the screen
lcdPuts(lcdHandle, "Will scroll...");
waitForEnter();
while(true) {
scrollMessage(0, COLUMNS, displayMessage); // scroll the specified message on the 1st row
/* display current time on LCD */
tim = time(NULL);
t = localtime(&tim);
sprintf(buf, "%02d:%02d:%02d", t->tm_hour, t->tm_min, t->tm_sec);
lcdPosition(lcdHandle, (COLUMNS - 8) / 2, 1);
lcdPuts(lcdHandle, buf);
}
return 0;
}