UART terminal garbage value RA2A1 series MCU

Question

I used RA2A1 Renesas series MCU and E2 studio & Moboxtream Serial terminal

I try to print the float value on the terminal via UART functionality after every 5 sec. so I used the timer interrupt and check UART transmission completed via UART interrupt call back. So It looks like a nested interrupt. UART callback has higher priority i.e 0 while 5-sec periodic timer interrupt has lower priority i.e. 1. I used 4800 as baud rate and channel 1. I used another baud rate but not successful. Sometimes it Prints properly sometimes not. How to solved it? UART Terminal

Answer 1

Using FSP API for coding RA2A1 Renesas MCU with UART functionality There are two API i.e R_SCI_UART_Open and R_SCI_UART_Close so when ever you wanna send data first OPEN the UART peripherals and after sending data you have to close it