How to get more output to PC (nrf52832)

[suker]

I use ESB sample code ,change to do 8k sample rate ADC(10bit) and transport by ESB ,but overflow when output receive data to PC use uart at UARTE_BAUDRATE_BAUDRATE_Baud1M. All my data is about 16KB/s,Is there somthing wrong ?

[Hung Bui]

Hi Suker,

Please state which chip you are using?

Could you try to test through put on UART only (print dummy data to PC, skip the ESB and ADC part). There are some UART driver on PC that actually doesn't support 1Mbps.

Have you tried to test with 460800baud ?

Sending 20kB:

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main.c

main.c with EasyDMA and bigger buffer

[suker]

1,I use nrf52832.

2,do you add more args on log system? I add a function nrf_log_frontend_std_8,but nothing output.

[Hung Bui]

I mean to do a throughput test. You send dummy data to UART and check how long would it take. Please try with 460800baud to check if it was the PC doesn't support 1Mbps or not.

[suker]

yes I test 460800, uart_to_usb chip cp2102, uart output overflow.

[Hung Bui]

Could you describe how you tested ? Have you used hardware flow control ?

[suker]

1,I donot change uart code except baudrate 2,Yes,I test no flow control and RTS/CTS,The result is the same.