//Функция вывода числа с плавающей точкой, где num - число, которое требуется вывести, param - число знаков после точки
void lcdWriteFloat(float num, int param)
{
int re1 = 0, re2 = 0, g = 0, t = 0.1;
g = param;
param = 1;
while(g)
{
param *=10;
g--;
}
if(num==0.0)
{
lcdWriteInt(0);
lcdWriteText(".");
lcdWriteInt(0);
return;
}
re1 = num;
re2 = (num*param)-(re1*param);
g = param;
lcdWriteInt(re1);
while(g)
{
if((num-re1)<t)
{
lcdWriteInt(0);
}
g--;
t *= 0.1;
}
lcdWriteInt(re2);
}
int main() {
if (wiringPiSetup() == -1)
return 1;
//PWM-Pin:Set contrast
pinMode(1,2);
pwmWrite(1,700);
//Switch on the backlight of the display
pinMode(2, OUTPUT); //Backlight-Pin
digitalWrite(2,1);
//SPI-Setup with Clock = 500kHz
if (wiringPiSPISetup(0,500000) < 0)
fprintf(stderr, "SPI Setup failed: %s\n", strerror(errno));
// if ((myData = malloc(8)) == NULL)
// {
// fprintf(stderr, "Unable to allocate buffer: %s\n", strerror(errno));
// }
lcdWrite(COMMAND,0x34);
lcdWrite(COMMAND,0x09);
lcdWrite(COMMAND,0x30);
lcdWrite(COMMAND,0x0F);
lcdWrite(COMMAND,0x01);
lcdWrite(COMMAND,0x06);
unsigned char myText[]=" Raspberry lebt!!! Was für ein Ding \0";
lcdWrite(COMMAND,0x01);
lcdWriteText(myText);
while(1) {
}
}
