Posted on April 09, 2014 at 13:48hi.dear
i use to IAR compiler, default_form_lib_2.1_iar_5.30 library and jlink.
it is my developer environment.
my chip is STR912FAW44.
first. i initialize UART2 set None parity bit.
second. i change to UART2 set Even parity bit.
i check registor by jlink. it is ok changed Even parity bit.
but it was still operationg in non parity bit.
next is my initialize UART1 and baud rate change C code.
void UART1_Initial(void)
{
/* Enable the UART0 Clock */
SCU_APBPeriphClockConfig(__UART1, ENABLE);
SCU_APBPeriphReset(__UART1,ENABLE);
UART_DeInit(UART1);
GPIO_StructInit(&GPIO_InitStructure); //Initialize the GPIO Init Structure parameters
/*Gonfigure UART1_Rx pin GPIO3.2*/
GPIO_InitStructure.GPIO_Direction = GPIO_PinInput;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ;
GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Enable;
GPIO_InitStructure.GPIO_Alternate = GPIO_InputAlt1 ;
GPIO_Init(GPIO3, &GPIO_InitStructure);
/*Gonfigure UART1_Tx pin GPIO3.3*/
GPIO_InitStructure.GPIO_Direction = GPIO_PinOutput;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Type = GPIO_Type_PushPull ;
GPIO_InitStructure.GPIO_IPInputConnected = GPIO_IPInputConnected_Disable;
GPIO_InitStructure.GPIO_Alternate = GPIO_OutputAlt2 ;
GPIO_Init(GPIO3, &GPIO_InitStructure);
UART_InitStructure.UART_WordLength = UART_WordLength_8D;
UART_InitStructure.UART_StopBits = UART_StopBits_1;
UART_InitStructure.UART_Parity = UART_Parity_No ;
UART_InitStructure.UART_BaudRate = 115200;
UART_InitStructure.UART_HardwareFlowControl = UART_HardwareFlowControl_None; // no flow controll
UART_InitStructure.UART_Mode = UART_Mode_Tx_Rx;
UART_InitStructure.UART_FIFO = UART_FIFO_Disable;
size 16 bytes, FIFO level 8 bytes */
UART_Init(UART1, &UART_InitStructure);
UART_ITConfig(UART1, UART_IT_Receive | UART_IT_Transmit, ENABLE);
VIC_Config(UART1_ITLine, VIC_IRQ, 5);
VIC_ITCmd(UART1_ITLine, ENABLE);
/* Enable the UART0 */
UART_Cmd(UART1, ENABLE);
}
void uart1_baudrate_set(INT32U baud)
{
UART_InitStructure.UART_WordLength = UART_WordLength_8D;
UART_InitStructure.UART_StopBits = UART_StopBits_1;
UART_InitStructure.UART_Parity = UART_Parity_Even ;
switch(baud)
{
case BAUD_RATE_9600:
case BAUD_RATE_19200:
case BAUD_RATE_38400:
case BAUD_RATE_57600:
case BAUD_RATE_115200:
UART_InitStructure.UART_BaudRate = baud;
break;
default :
UART_InitStructure.UART_BaudRate = 115200;
break;
}
UART_InitStructure.UART_HardwareFlowControl = UART_HardwareFlowControl_None;
UART_InitStructure.UART_Mode = UART_Mode_Tx_Rx;
UART_InitStructure.UART_FIFO = UART_FIFO_Disable;
UART_Init(UART1, &UART_InitStructure);
}
I
can not
understand this situation
.
i want to solution.
