初级会员

- 积分
- 93
- 金钱
- 93
- 注册时间
- 2013-12-30
- 在线时间
- 0 小时
|
原子哥的串口通信实验发送的是16位的还是8位呢,
void USART_SendData(USART_TypeDef* USARTx, uint16_t Data)
{
/* Check the parameters */
assert_param(IS_USART_ALL_PERIPH(USARTx));
assert_param(IS_USART_DATA(Data));
/* Transmit Data */
USARTx->DR = (Data & (uint16_t)0x01FF);
}
我想发送8位的需要怎么修改啊,我看定义的
#define CR1_UE_Set ((uint16_t)0x2000) /*!< USART Enable Mask */
#define CR1_UE_Reset ((uint16_t)0xDFFF) /*!< USART Disable Mask */
#define CR1_WAKE_Mask ((uint16_t)0xF7FF) /*!< USART WakeUp Method Mask */
#define CR1_RWU_Set ((uint16_t)0x0002) /*!< USART mute mode Enable Mask */
#define CR1_RWU_Reset ((uint16_t)0xFFFD) /*!< USART mute mode Enable Mask */
#define CR1_SBK_Set ((uint16_t)0x0001) /*!< USART Break Character send Mask */
#define CR1_CLEAR_Mask ((uint16_t)0xE9F3) /*!< USART CR1 Mask */
#define CR2_Address_Mask ((uint16_t)0xFFF0) /*!< USART address Mask */
#define CR2_LINEN_Set ((uint16_t)0x4000) /*!< USART LIN Enable Mask */
#define CR2_LINEN_Reset ((uint16_t)0xBFFF) /*!< USART LIN Disable Mask */
#define CR2_LBDL_Mask ((uint16_t)0xFFDF) /*!< USART LIN Break detection Mask */
#define CR2_STOP_CLEAR_Mask ((uint16_t)0xCFFF) /*!< USART CR2 STOP Bits Mask */
#define CR2_CLOCK_CLEAR_Mask ((uint16_t)0xF0FF) /*!< USART CR2 Clock Mask */
#define CR3_SCEN_Set ((uint16_t)0x0020) /*!< USART SC Enable Mask */
#define CR3_SCEN_Reset ((uint16_t)0xFFDF) /*!< USART SC Disable Mask */
#define CR3_NACK_Set ((uint16_t)0x0010) /*!< USART SC NACK Enable Mask */
#define CR3_NACK_Reset ((uint16_t)0xFFEF) /*!< USART SC NACK Disable Mask */
#define CR3_HDSEL_Set ((uint16_t)0x0008) /*!< USART Half-Duplex Enable Mask */
#define CR3_HDSEL_Reset ((uint16_t)0xFFF7) /*!< USART Half-Duplex Disable Mask */
#define CR3_IRLP_Mask ((uint16_t)0xFFFB) /*!< USART IrDA LowPower mode Mask */
#define CR3_CLEAR_Mask ((uint16_t)0xFCFF) /*!< USART CR3 Mask */
#define CR3_IREN_Set ((uint16_t)0x0002) /*!< USART IrDA Enable Mask */
#define CR3_IREN_Reset ((uint16_t)0xFFFD) /*!< USART IrDA Disable Mask */
#define GTPR_LSB_Mask ((uint16_t)0x00FF) /*!< Guard Time Register LSB Mask */
#define GTPR_MSB_Mask ((uint16_t)0xFF00) /*!< Guard Time Register MSB Mask */
#define IT_Mask ((uint16_t)0x001F) /*!< USART Interrupt Mask */
/* USART OverSampling-8 Mask */
#define CR1_OVER8_Set ((u16)0x8000) /* USART OVER8 mode Enable Mask */
#define CR1_OVER8_Reset ((u16)0x7FFF) /* USART OVER8 mode Disable Mask */
/* USART One Bit Sampling Mask */
#define CR3_ONEBITE_Set ((u16)0x0800) /* USART ONEBITE mode Enable Mask */
#define CR3_ONEBITE_Reset ((u16)0xF7FF) /* USART ONEBITE mode Disable Mask */
全都是16位的
|
|