Hallo
I am working with DAC8571 with Raspberry PI, I am trying to change the output that starts from 500mV, 1V, 1.5V, and 2.5V
but the output is not changed, the output is still 1.25V. I am using Python programme, my program like this
1. Start signal
2. send DAC address
3. send control byte
4. MSB and LBS for DAC output
DAC_ADDR = 0x4C
DAC_REGISTER = 0x10
DAC_VOUT = 0x1999
bus.write_word_data(DAC_ADDR, DAC_REGISTER, DAC_VOUT)
please help me
Hi Uttam,
Thank you for your reply, I am using my own board. my schematic like this
Best regards
Rizal
Hi Uttam
I can show the I2C waveform scope because I haven't Oscilloscope, I think, The I2C is work well
because Raspberry or microcontroller can be sent the data to the DAC register and the DAC register was changed. This the picture is shown DAC register before and after receiving data from I2C.
Figure 1. DAC register default
Figure 2. DAC Register after receipt data from Raspberry
The Vout is not in accordance with this formula (Vout = VREF * D/65536)
Best regards
Rizal
