About KL02Z UART Polling Method , Receive Error

ellenlin — Thu, 21 Mar 2019 09:26:53 GMT

Dear NXP ,

I use KL02Z try to make a project with UART ( Polling method ) , IDE is code warrior 11.0 . Baud Rate is almost 9600

UART Sending data is normal . But Receive Data won't work , has already check PC UART Tool and waveform are normal .

Attachment is my code , could you help to point out what is wrong with this code ? thanks a lot !!

void UART_INIT(void)
{
UART0_C2 &= ~(UART0_C2_TE_MASK | UART0_C2_RE_MASK);
UART0_BDH = 0x01 ;
UART0_BDL = 0x38 ;
UART0_C4 = 0x0F ;
UART0_C1 = 0x00 ;
UART0_C3 = 0x00 ;
UART0_MA1 = 0x00 ;
UART0_S1 |= 0x1F ;
UART0_S2 |= 0xC0 ;
UART0_C2 |= UART0_C2_TE_MASK | UART0_C2_RE_MASK ;
}

while(1)
{
while(!(UART0_S1&UART0_S1_RDRF_MASK)); <------------ always wait here
String = UART0_D;
while(!(UART0_S1&UART0_S1_TDRE_MASK)&&!(UART0_S1&UART0_S1_TC_MASK));
UART0_D = String ;
}

B.R

Ellen Lin

Re: About KL02Z UART Polling Method , Receive Error

jingpan — Wed, 27 Mar 2019 03:31:23 GMT

Hi Lin,

I run your code on my FRDM-KL02. It works fine. Would you please check hardware again?

Regards,

Jing

Re: About KL02Z UART Polling Method , Receive Error

ellenlin — Wed, 27 Mar 2019 06:35:27 GMT

Dear Jing Pan ,

Thanks for your help , i has already check HW , my connector has some damage so doesn't receive any data , thanks a lot !!

topic About KL02Z UART Polling Method , Receive Error in Kinetis Microcontrollers

About KL02Z UART Polling Method , Receive Error

Re: About KL02Z UART Polling Method , Receive Error

Re: About KL02Z UART Polling Method , Receive Error