| CMSIS-Driver Peripheral Interface for Middleware and Application Code |

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Macros
USART Clock Polarity
USART Interface » USART Control Codes

Defines the clock polarity for the synchronous mode. More...

## Macros
#define | ARM_USART_CPOL0 (0UL << ARM_USART_CPOL_Pos)
| CPOL = 0 (default)
#define | ARM_USART_CPOL1 (1UL << ARM_USART_CPOL_Pos)
| CPOL = 1.

## Description

Defines the clock polarity for the synchronous mode.

## Macro Definition Documentation

## ◆ ARM_USART_CPOL0

#define ARM_USART_CPOL0 (0UL << ARM_USART_CPOL_Pos)

CPOL = 0 (default)

See also
  ARM_USART_Control; ARM_USART_Receive; ARM_USART_Send; ARM_USART_Transfer

## ◆ ARM_USART_CPOL1

#define ARM_USART_CPOL1 (1UL << ARM_USART_CPOL_Pos)

CPOL = 1.

See also
  ARM_USART_Control; ARM_USART_Receive; ARM_USART_Send; ARM_USART_Transfer