Expand PWM support from 3 to 5 simultaneous channels #157
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This commit expands the PWM driver to support 5 simultaneous PWM channels (up from 3), utilizing both TIMER0 and TIMER1 hardware peripherals. Changes: - Increased max_pwm_channels from 3 to 5 in pwm.h - Implemented 2-timer allocation strategy in pwm.cpp: * Channels 0-2 use TIMER0 (CC0, CC1, CC2) * Channels 3-4 use TIMER1 (CC0, CC1) - Added helper methods get_timer_for_channel() and get_cc_channel_for_pwm_channel() - All channels share the same frequency (GSDK constraint) with independent duty cycles - Updated test_sketch.ino to test all 5 PWM channels - Added pwm_multi_channel example demonstrating 5-channel usage Hardware tested on Arduino Nano Matter (EFR32xG24) with oscilloscope verification of 4 channels (the limit of my oscilloscope) operating simultaneously with different duty cycles. All 28 automated build tests pass.
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This commit expands the PWM driver to support 5 simultaneous PWM channels (up from 3), utilizing both TIMER0 and TIMER1 hardware peripherals.
Changes:
Hardware tested on Arduino Nano Matter (EFR32xG24) with oscilloscope verification of 4 channels (the limit of my oscilloscope) operating simultaneously with different duty cycles.
All 28 automated build tests pass.
