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3 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Angus Gratton
|
593ae04eeb |
esp32/machine_timer: Fix machine.Timer() tick frequency on ESP32C2,C6.
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Also future-proofs this code for other chips. Apart form C6 and C2, all currently supported chips use APB clock for GPTIMER_CLK_SRC_DEFAULT. ESP32-C2 uses 40MHz PLL but APB_CLK_FREQ was 26MHz. ESP32-C6 uses 80MHz PLL but APB_CLK_FREQ was 40MHz. Implementation now gets the correct frequency from ESP-IDF. This work was funded through GitHub Sponsors. Signed-off-by: Angus Gratton <angus@redyak.com.au> |
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Daniël van de Giessen
|
2c2f0b292a |
esp32: Re-use allocated timer interrupts and simplify UART timer code.
If the interrupt is not freed but merely disabled, instead of reallocating it every time the timer is enabled again we can instead just re-enable it. That means we're no longer setting the handler every time, and we need to ensure it does not change. Doing so by adding an additional wrapper function does not only solve that problem, it also allows us to remove some code duplication and simplify how machine_uart uses the timer. Signed-off-by: Daniël van de Giessen <daniel@dvdgiessen.nl> |
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robert-hh
|
a38b4f4287 |
esp32/machine_uart: Implement UART.RX_IDLE based on machine.Timer.
The UART.IRQ_IDLE callback is called about two character times after the last byte, or 1 ms, whichever is larger. For the irq, timer 0 is used. machine_timer.c had to be reworked to make it's mechanisms available for machine_uart.c. The irq.flags() value is change only at a requested event. Otherwise keep the state. Signed-off-by: robert-hh <robert@hammelrath.com> |