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For sufficiently large cyw43 PIO SPI transfers, sleep via async_context before entering busy wait. #2344

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For sufficiently large cyw43 PIO SPI transfers, sleep via async_context before entering busy wait. #2344

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- For sufficiently large cyw43 PIO SPI transfers, sleep via async_con…
esky-software Mar 10, 2025
a71a8d3
Add PICO_CONFIG description for CYW43_PIO_SLEEP_MIN_US
esky-software Apr 5, 2025
833d3de
Update cyw43_bus_pio_spi.c
esky-software May 8, 2025
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Add PICO_CONFIG description for CYW43_PIO_SLEEP_MIN_US
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@esky-software
esky-software authored Apr 5, 2025
commit a71a8d3a4e2fa7a37ea667509b31c5c568f5ec1d
1 change: 1 addition & 0 deletions src/rp2_common/pico_cyw43_driver/cyw43_bus_pio_spi.c
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Expand Up @@ -54,6 +54,7 @@ void cyw43_set_pio_clkdiv_int_frac8(uint32_t clock_div_int, uint8_t clock_div_fr
}
#endif

// PICO_CONFIG: CYW43_PIO_SLEEP_MIN_US, For PIO SPI transfers longer than this (in microseconds), sleep via async_context before entering busy wait, default=disabled, group=pico_cyw43_driver
#if CYW43_PIO_SLEEP_MIN_US
static uint32_t bit_rate_khz;
static void sleep_if_long_transfer(uint32_t xfr_length)
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