Tool/software:
Hi,
I am using TLA2528 in my design. I configured AIN0-AIN6 as analog inputs. Unfortunately based on datasheet of this IC it is not working. I always get 0x0000 data value from data register where data is stored.
I am using logic analyzer to verify if data frames send via I2C are properly.
Diagram of connection is below:
After power up the device I am reading status register:
I send address, opcode, reg address, then to read I send address and read 0x81, but I dont get ACK inlast read byte.
Then I clear bor bit:
Then I repeat read status register, where I read 0x80 so BOR bit is cleared properly:
Next, I calibrate the converter:
Next, I set all GPIO's as analog inputs:
Next, I set oversampling as 0:
Next, I set manual mode:
Next, I set channel AIN1(GPIO1):
Next, I set append ID to result
Next, I start conversion:
And try to read data:
I always get 0x00 and 0x00 in last two bytes that should contain results from 0 to 4095.
Can someone look into the problem and say what I am doing wrong?
Maybe order of sending frames?
