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linux: add support for Linux hardware PWM

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The replicape servo pins (P9_14/P9_16) are muxed to the SOCs hardware
PWM unit driven by a 13MHz GP timer. They have to be driven by the
linux host mcu. This commits adds hardware PWM support using the linux
sysfs user space interface.

Signed-off-by: Janne Grunau <janne-3d@jannau.net>
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Janne Grunau
2019-03-24 10:25:56 +01:00
committed by Kevin O'Connor
parent e6c3eeafd7
commit aab89e7f85
6 changed files with 110 additions and 4 deletions
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2
src/linux/Makefile
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@@ -3,7 +3,7 @@
dirs-y += src/linux src/generic
src-y += linux/main.c linux/timer.c linux/console.c linux/watchdog.c
src-y += linux/pca9685.c linux/spidev.c linux/analog.c
src-y += linux/pca9685.c linux/spidev.c linux/analog.c linux/hard_pwm.c
src-y += generic/crc16_ccitt.c generic/alloc.c
CFLAGS_klipper.elf += -lutil