Mam problem ze współpracą czujnika HDC1080 oraz uC ATmega8A. Kod robiłem wg. datasheet'a oraz przykładów, ale po walkach nadal nie działa. Po UART wypluwa ciągle 0x00.
Mój kod:
[syntax=c]void i2cInit(uint8_t address)
{
TWCR = 0;
TWCR = (1<<TWINT) | ( 1<<TWSTA) | (1<<TWEN);
while (! (TWCR & (1<<TWINT)));
TWDR = address;
TWCR = (1<<TWINT) | (1<<TWEN);
while( !(TWCR & (1<<TWINT)) );
}
void i2cWrite(uint8_t data)
{
TWDR = data;
TWCR = (1<<TWINT) | (1<<TWEN);
while (! (TWCR & (1<<TWINT)));
}
uint8_t i2cReadAck()
{
TWCR = (1<<TWINT) | (1<<TWEA) | (1<<TWEN);
while (! (TWCR & (1<<TWINT)));
return TWDR;
}
uint8_t i2cReadNack()
{
TWCR = (1<<TWINT) | (1<<TWEN);
while (! (TWCR & (1<<TWINT)));
return TWDR;
}
void i2cEnd()
{
TWCR = (1<<TWINT)|(1<<TWEN)|(1<<TWSTO);
}
void hdc1080Begin()
{
i2cInit(0x40);
i2cWrite(0x02);//config
i2cWrite(0x10);
i2cWrite(0x00);
i2cEnd();
}
uint16_t readData(uint8_t pointer)
{
i2cInit(0x40);
i2cWrite(pointer);
_delay_ms(20);
uint8_t msb = i2cReadAck();
uint8_t lsb = i2cReadNack();
UDR = msb;
UDR = lsb;
return msb << 8 | lsb;
}
uint16_t hdc1080readTemp()
{
uint16_t rawT;
rawT = readData(0x00);
return (rawT / 65536.0) * 165.0 - 40.0;
}
double hdc1080readHum()
{
uint16_t rawH = readData(0x01);
return (rawH / 65536.0) * 100.0;
}
int main(void)
{
_delay_ms(20);
uartInit();
hdc1080Begin();
uint16_t temp, hum;
while (1)
{
temp = hdc1080readTemp();
hum = hdc1080readHum();
_delay_ms(5000);
}
}[/syntax]
Nie wiem co jest nie tak, według mnie wszystko powinno śmigać. Gdzie robię błąd? Pomocy.Statystyki: Napisane przez VaZZoN — 2 sie 2018, o 21:10
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