Update Timer HAL to use new autogen interface#385
Update Timer HAL to use new autogen interface#385ziuziakowska wants to merge 1 commit intolowRISC:mainfrom
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| uint64_t timer_get_value(timer_t timer) | ||
| void timer_enable(timer_t timer) |
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Nit. I would prefer timer_set_enabled(timer_t timer, bool enable)
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| void timer_enable_interrupt(timer_t timer) | ||
| uint64_t timer_value_read_us(timer_t timer) |
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| uint64_t timer_value_read_us(timer_t timer) | |
| uint64_t timer_value_read(timer_t timer) |
This function can't garantee the value unit. If a test change the cfg0 reg, this function name would be inconsistent.
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That is true, but in practice I think we should have convenience functionality like this in the library instead of relying on everyone to calculate times themselves which could be much more error prone. All usages of the timer so far have used one us per tick so this was meant to simplify that for future tests.
I could add documentation to those functions in particular to notify users that if they are initialising the timer outside of timer_init then these functions shouldn't be used.
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In Opentitan this higher level functions live in a library called testutils, I'm not against having these utilities in the hal, but there should also have functions to read the raw timer value, because tests would want to use it.
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| typedef void *timer_t; | ||
| /* interrupts */ | ||
| bool timer_interrupt_enable_read(timer_t timer); |
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No need to change in this PR, just a heads up, in OT these functions are auto generated, because all IPs follow the same spec.
Signed-off-by: Alice Ziuziakowska <a.ziuziakowska@lowrisc.org>
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Split off from #299.