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-rw-r--r--platforms/chibios/chibios_config.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/platforms/chibios/chibios_config.h b/platforms/chibios/chibios_config.h
index 8dcc23727f..38d3a40f6b 100644
--- a/platforms/chibios/chibios_config.h
+++ b/platforms/chibios/chibios_config.h
@@ -28,6 +28,10 @@
# define USE_GPIOV1
# define PAL_OUTPUT_TYPE_OPENDRAIN _Static_assert(0, "RP2040 has no Open Drain GPIO configuration, setting this is not possible");
+# define BACKLIGHT_PAL_MODE (PAL_MODE_ALTERNATE_PWM | PAL_RP_PAD_DRIVE12 | PAL_RP_GPIO_OE)
+# define BACKLIGHT_PWM_COUNTER_FREQUENCY 1000000
+# define BACKLIGHT_PWM_PERIOD BACKLIGHT_PWM_COUNTER_FREQUENCY / 2048
+
# define usb_lld_endpoint_fields
# define I2C1_SCL_PAL_MODE (PAL_MODE_ALTERNATE_I2C | PAL_RP_PAD_SLEWFAST | PAL_RP_PAD_PUE | PAL_RP_PAD_DRIVE4)