printf \r no output in ESP-IDF Monitor

[george.stefanovski]

Hello,

Using the ADC DMA example (https://github.com/espressif/esp-idf/tr ... c/dma_read)

I am trying to get the output (within the ESP-IDF Monitor) to display on the same line i.e. no output on a new line.

I have tried using the \r carriage return format specifier, but output happens.

Code: [Select all] [Expand/Collapse]

1. for (int i = 0; i < ret_num; i += ADC_RESULT_BYTE)
2.             {
3.                 adc_digi_output_data_t *p = (void *)&result[i];
4.                 printf("value %d\r", p->type1.data);
5.                 fflush(stdout)

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Thank you in advance
George Stefanovski

[chegewara]

Its annoying, but for some reason print requires "\n" to flush to console.
You could use uart_write_bytes instead, but that requires to init and install UART port.

[ESP_Sprite]

I think that's standard posix behaviour... you may be able to use fflush(stdout) to flush the line, or use setvbuf() to make stdout unbuffered.

[george.stefanovski]

Thank you