diff --git a/ports/raspberrypi/common-hal/rgbmatrix/RGBMatrix.c b/ports/raspberrypi/common-hal/rgbmatrix/RGBMatrix.c
index f150422e3cf49..d580b4cc6abe1 100644
--- a/ports/raspberrypi/common-hal/rgbmatrix/RGBMatrix.c
+++ b/ports/raspberrypi/common-hal/rgbmatrix/RGBMatrix.c
@@ -33,6 +33,7 @@
#include "shared-module/rgbmatrix/RGBMatrix.h"
#include "src/rp2_common/hardware_pwm/include/hardware/pwm.h"
+#include "src/rp2_common/hardware_irq/include/hardware/irq.h"
void *common_hal_rgbmatrix_timer_allocate(rgbmatrix_rgbmatrix_obj_t *self) {
// Choose a PWM channel based on the first RGB pin
@@ -58,6 +59,8 @@ void common_hal_rgbmatrix_timer_enable(void *ptr) {
void common_hal_rgbmatrix_timer_disable(void *ptr) {
int8_t slice = ((intptr_t)ptr) & 0xff;
pwm_set_enabled(slice, false);
+ irq_set_enabled(PWM_IRQ_WRAP, false);
+ pwm_clear_irq(slice);
}
void common_hal_rgbmatrix_timer_free(void *ptr) {
@@ -65,6 +68,8 @@ void common_hal_rgbmatrix_timer_free(void *ptr) {
uint8_t slice = value & 0xff;
uint8_t channel = value >> 8;
pwm_set_enabled(slice, false);
+ irq_set_enabled(PWM_IRQ_WRAP, false);
+ pwm_clear_irq(slice);
pwmout_free(slice, channel);
return;
}
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