problem de code to calcul with arduino nano

problem de code to calcul with arduino nano#116818

By darche_j - Fri Jan 07, 2011 6:43 am

- Fri Jan 07, 2011 6:43 am #116818

i have an accelerometer who give me a value and with the line up i want transform value in acceleration value in G :
value send by accelerometer * quantum= acceleration value directly
512*0,00198= 1,01376 g that's terrestrial gravity

with this code i don't arrive to calcul temp 2
temp2 = temp2*0,00198;
error: invalid digit "9" in octal constant

i have change the equation in that
temp2 = temp2*(198/100000)
but when a look temp2 it's 0

delay_us(100);
temp = read(ACCXMSB); //read msb
temp2 = temp << 8; // temp2 = 16BITS = msb (8bits) and lsb (8bits)
temp2 |= read(ACCXLSB);
temp2 = temp2 >> 2; // Get rid of two non-value bits in LSB
// temp2 = temp2*(198/100000);
Serial.print("\t");
Serial.print("\t");
Serial.print(temp2);
all work good without this line temp2 = temp2*(198/100000);
that show 512 as value

how can resolve this problem please and happy new year every boby!

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