I have been tasked to develop MCU firmware and a GUI to interface with this part. My MCU firmware encodes UART RX/TX frames and appends the CRC16 H/L bytes. My problem is that there is no response from my UART messages.
VIN: 12V -> VDD: 5.0V, VIO: 3.3V, and AREF: 2.5V
CLK: 6MHz (Crystal) -> SERIAL BAUD RATE: 375K
INIT: Write Byte (0x87)
DEVID: Serial Address (0x20) [0 0 1 0 0 0 0 0]
REGADDR: Register Address (0x80)
DATA: Data Byte (0xA1)
CRCL: 0x89
CRCH: 0x06
Logic Analyzer capture:
Scope capture:
I have the full datasheet (SLUSCU8 –JUNE 2017) but I don't have the User's Guide or any code examples to verify that I am talking to the part correctly. I have read here that others have also run into this issue, but since none of the responses are published, I have to bug someone with the question again.
Any help would be appreciated.
