Should there be a stdio_uart_deinit()? #810
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gh-raspberrypi/pico-sdk#810
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I would like to disable UART console output after running for a while. Idea is to dump boot diagnostics to console but once everything is up and running (say after 1 minute or so) I would like to disable UART output to save power running off batteries.
I'd call
stdio_uart_deinitand then clock-off UART. My crusty amp meter says clock-off will save about 0.5mA.Stumbled over #808 while trying this.
I got a related question: what is supposed to happen (wrt to printf) if I disable
CLOCKS_WAKE_EN1_CLK_SYS_UART0_BITSandCLOCKS_WAKE_EN1_CLK_PERI_UART0_BITS? Somewhere down the call stack is a call touart_write_blocking(). If the UART controller is not clocked, is there always space in the tx fifo?