diff --git a/drv/tim.h b/drv/tim.h
index c10470f..dfa9f2f 100644
--- a/drv/tim.h
+++ b/drv/tim.h
@@ -113,7 +113,7 @@ enum TimOutputConfig {
 	TIM_OUTPUT_CONFIG_CLEAR_ON_EXT_TRIG   = (0x1 << 7),
 };
 
-enum TimIntputConfig {
+enum TimInputConfig {
 	TIM_INPUT_CONFIG_ALTERNATE_TRIGGER      = (0x2 << 0),
 	TIM_INPUT_CONFIG_INTERNAL_TRIGGER       = (0x3 << 0),
 	TIM_INPUT_CONFIG_PRESCALER_1            = (0x0 << 2),
@@ -135,6 +135,7 @@ typedef void (*TimCallback)(enum TimIRQSource src);
 
 void tim_configure_master(enum TimPeriph periph, enum TimConfig config_mask,
 		enum TimMasterConfig master_config_mask, TimCallback callback);
+//Not implemented
 void tim_configure_slave(enum TimPeriph periph, enum TimConfig config_mask,
 		enum TimSlaveConfig slave_config_mask, TimCallback callback);
 
@@ -150,12 +151,15 @@ uint16_t tim_get_auto_reload(enum TimPeriph periph);
 uint16_t tim_get_prescaler(enum TimPeriph periph);
 uint16_t tim_get_counter(enum TimPeriph periph);
 
+//Not implemented
 void tim_configure_output_channel(enum TimPeriph periph,
 		enum TimChannel channel_mask, enum TimOutputConfig config_mask,
 		uint16_t value);
+//Not implemented
 void tim_configure_input_channel(enum TimPeriph periph,
 		enum TimChannel channel_mask, enum TimInputConfig config_mask,
 		uint16_t value);
+//Not implemented
 void tim_configure_ext_trigger(enum TimPeriph periph,
 		enum TimExtConfig ext_config_mask);