Tool/software:
Dear TI Support Team,
I'm encountering UART communication problems on the Jacinto7 CPB and need assistance with proper configuration.
Hardware Setup:
- Board: Jacinto7 CPB
- Connected Device: GNSS receiver with antenna
- Connection: TX, RX, and Ground pins
- UART Interfaces: Attempted connections to UART1 and UART2 (which maps to UART3)
Issue Description: I have a GNSS receiver connected to the board via UART interface, but I'm not receiving any data output. The UART communication appears to be non-functional despite proper physical connections.
Connection Details:
- GNSS TX → Board RX
- GNSS RX → Board TX
- GNSS GND → Board GND
- Tested on both UART1 and UART2 interfaces
Troubleshooting Steps Taken:
- Verified physical wiring connections
- Tested on multiple UART interfaces (UART1, UART2)
- Confirmed GNSS receiver functionality with other devices
Questions:
- What is the correct device tree configuration for enabling UART1, UAART2 and UART3 on the Jacinto7 CPB?
- Can you clarify the UART numbering scheme (you mentioned UART2 changes to UART3)?
- Are there specific pinmux settings required for UART functionality?
- How can I verify that the UART drivers are properly loaded and initialized?
Additional Information Needed:
- Sample device tree configuration for UART interfaces
- Any hardware jumper or switch settings required
The GNSS receiver typically outputs NMEA data at 115200 baud, so I need to ensure the UART is properly configured to receive this data stream.
Regards,
Sarthak
