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-rw-r--r--chip/stm32/registers.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/chip/stm32/registers.h b/chip/stm32/registers.h
index e6b89fb315..f323e10201 100644
--- a/chip/stm32/registers.h
+++ b/chip/stm32/registers.h
@@ -88,7 +88,8 @@
#define STM32_TIM_CCMR1_OC1M_PWM_MODE_2 STM32_TIM_CCMR1_OC1M(0x7)
#define STM32_TIM_CCMR2(n) STM32_TIM_REG(n, 0x1C)
#define STM32_TIM_CCER(n) STM32_TIM_REG(n, 0x20)
-#define STM32_TIM_CCER_CC1E BIT(0)
+#define STM32_TIM_CCER_CC1E BIT(0)
+#define STM32_TIM_CCER_CC1NE BIT(2)
#define STM32_TIM_CNT(n) STM32_TIM_REG(n, 0x24)
#define STM32_TIM_PSC(n) STM32_TIM_REG(n, 0x28)
#define STM32_TIM_ARR(n) STM32_TIM_REG(n, 0x2C)