void uartInit(void)
{
UART2_DeInit(); /* 将寄存器的值复位 */
/*
* 将UART2配置为：
* 波特率 = 115200
* 数据位 = 8
* 1位停止位
* 无校验位
* 使能接收和发送
*/
UART2_Init((u32)115200, UART2_WORDLENGTH_8D, UART2_STOPBITS_1, \
UART2_PARITY_NO, UART2_SYNCMODE_CLOCK_DISABLE, UART2_MODE_TXRX_ENABLE);
UART2_ITConfig(UART2_IT_RXNE, ENABLE); //开启接收中断
UART2_Cmd(ENABLE);
}
void MOD_UART_Config(uint32_t baud)
{
/* UART1 and UART3 configured as follow:
- BaudRate = 230400 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Receive and transmit enabled
*/
UART2_DeInit();
UART2_Init(baud, UART2_WORDLENGTH_8D, UART2_STOPBITS_1,
UART2_PARITY_NO,
UART2_SYNCMODE_CLOCK_DISABLE, UART2_MODE_TXRX_ENABLE);
UART2_ClearITPendingBit(UART2_IT_RXNE);
//UART2_ITConfig(UART2_IT_RXNE_OR, ENABLE);
//UART2_ITConfig(UART2_IT_TXE, ENABLE);
UART2_Cmd(ENABLE);
//UART2_ClearITPendingBit(UART2_IT_IDLE);
//UART2_ITConfig(UART2_IT_IDLE, ENABLE);
}
//Modbus Initialization
void Modbus_Init(void)
{
//Clock divider equals 1.Clock 16MHz
CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1);
//Clear bits
TIM2_DeInit();
GPIO_DeInit(GPIOA);
UART2_DeInit();
//Peripetial Initialization
TIM2_TimeBaseInit(TIM2_PRESCALER_2048, 78);
GPIO_Init(GPIOA, GPIO_PIN_3, GPIO_MODE_OUT_PP_LOW_FAST);
UART2_Init(BAUDRATE, UART2_WORDLENGTH_8D, UART2_STOPBITS_2,UART2_PARITY_NO,UART2_SYNCMODE_CLOCK_DISABLE,UART2_MODE_TXRX_ENABLE );
//Enable Periphs
TIM2_Cmd(ENABLE);
UART2_Cmd(ENABLE);
//Interrupt configuration
TIM2_ITConfig(TIM2_IT_UPDATE, ENABLE);
UART2_ITConfig(UART2_IT_RXNE_OR, ENABLE);
#ifndef __DELAY_EN
#define __MODBUS_EN
enableInterrupts();
#endif
}