jerpelea opened a new pull request, #19204:
URL: https://github.com/apache/nuttx/pull/19204
## Summary
Fixed three bugs in the RP23XX (RISC-V) PWM driver, mirroring the fix
previously applied to the ARM variant:
* setup_period: The previous divisor calculation used integer arithmetic
that caused overflow and loss of precision. The divider is now computed as a
16-bit fixed-point value (div16) using 64-bit arithmetic, and clamped to the
valid hardware range (0x10 to 0xFFF).
* setup_pulse: The compare value was incorrectly scaled by TOP instead of
65535, producing wrong duty cycles. The formula is now corrected to ((duty *
(top + 1)) / 65535) with an overflow guard.
* pwm_start: The driver was not updated as part of the breaking change
introduced in commit 4df80e19 ("!drivers/pwm: remove PWM_MULTICHAN option").
Access to single channel API is now info->channels[0].duty instead of
info[0].duty.
## Impact
RELEASE
## Testing
CI
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