[RTduino][readme] correct grammar

mysterywolf · Guozhanxin · commit 120595d37171 · 2023-01-13T11:40:57.000+08:00
diff --git a/bsp/stm32/stm32f072-st-nucleo/applications/arduino_pinout/README.md b/bsp/stm32/stm32f072-st-nucleo/applications/arduino_pinout/README.md
@@ -52,7 +52,7 @@ This board complies with Arduino UNO pins layout. For more details, please take
 
 > Notice:
 > 
-> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timer can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.
+> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timers can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.
 
 > References
 > 
diff --git a/bsp/stm32/stm32f103-blue-pill/applications/arduino_pinout/README.md b/bsp/stm32/stm32f103-blue-pill/applications/arduino_pinout/README.md
@@ -61,7 +61,7 @@ For more information, please see [pins_arduino.c](pins_arduino.c) and [pins_ardu
 
 > Notice:
 > 
-> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timer can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.
+> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timers can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.
 
 ## 3 Communication
 
diff --git a/bsp/stm32/stm32f401-st-nucleo/applications/arduino_pinout/README.md b/bsp/stm32/stm32f401-st-nucleo/applications/arduino_pinout/README.md
@@ -52,7 +52,7 @@ This board complies with Arduino UNO pins layout. For more details, please take
 
 > Notice:
 > 
-> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timer can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.
+> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timers can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.
 
 > References
 > 
diff --git a/bsp/stm32/stm32f412-st-nucleo/applications/arduino_pinout/README.md b/bsp/stm32/stm32f412-st-nucleo/applications/arduino_pinout/README.md
@@ -55,7 +55,7 @@ This board complies with Arduino UNO pins layout. For more details, please take
 
 > Notice:
 > 
-> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timer can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.
+> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timers can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.
 
 > References
 > 
diff --git a/bsp/stm32/stm32f469-st-disco/applications/arduino_pinout/README.md b/bsp/stm32/stm32f469-st-disco/applications/arduino_pinout/README.md
@@ -56,7 +56,7 @@ This board complies with Arduino UNO pins layout. For more details, please take
 
 > Notice:
 > 
-> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timer can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.
+> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timers can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.
 
 > References
 > 

Original file line number	Diff line number	Diff line change
`@@ -52,7 +52,7 @@ This board complies with Arduino UNO pins layout. For more details, please take`
`52`	`52`
`53`	`53`	`> Notice:`
`54`	`54`	`>`
`55`		`-> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timer can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.`
	`55`	`+> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timers can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.`
`56`	`56`
`57`	`57`	`> References`
`58`	`58`	`>`
Original file line number	Diff line number	Diff line change
`@@ -61,7 +61,7 @@ For more information, please see [pins_arduino.c](pins_arduino.c) and [pins_ardu`
`61`	`61`
`62`	`62`	`> Notice:`
`63`	`63`	`>`
`64`		`-> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timer can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.`
	`64`	`+> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timers can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.`
`65`	`65`
`66`	`66`	`## 3 Communication`
`67`	`67`
Original file line number	Diff line number	Diff line change
`@@ -55,7 +55,7 @@ This board complies with Arduino UNO pins layout. For more details, please take`
`55`	`55`
`56`	`56`	`> Notice:`
`57`	`57`	`>`
`58`		`-> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timer can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.`
	`58`	`+> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timers can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.`
`59`	`59`
`60`	`60`	`> References`
`61`	`61`	`>`
Original file line number	Diff line number	Diff line change
`@@ -56,7 +56,7 @@ This board complies with Arduino UNO pins layout. For more details, please take`
`56`	`56`
`57`	`57`	`> Notice:`
`58`	`58`	`>`
`59`		`-> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timer can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.`
	`59`	`+> 1. Don't use a same hardware timer to drive PWM (analogRead) and servos at same time, because hardware timers can only generate a same frequency for 4 PWM channels. Otherwise, it could cause a failure when drive servos.`
`60`	`60`
`61`	`61`	`> References`
`62`	`62`	`>`