hi, guys. I'm begginer in freescale.
actually, I didn't even know that what the problem is in this code.
I think that is default handler.
when I was coding for uart driver I got a problem about default handler.
Maybe I know that picture of bottom is occured exception and next bottom is main code.
I already got many solutions for this issue on this community. but, I couldn't do that
I guess that issue is related Clock Gating.. whatever
this board is FRDM-K64F
nobody know that issue... TT so, if anybody know that problem.... help me...
thank you.
Noah.
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#include "Cpu.h"
#include "Events.h"
#include "clockMan1.h"
#include "pin_init.h"
#include "osa1.h"
#include "Drv_UART.h"
#if CPU_INIT_CONFIG
#include "Init_Config.h"
#endif
#define REG_RW(x) (volatile uint32_t *)(x)
int main(void)
{
PE_low_level_init();
Init_Uart(4,50000000,115200);
#ifdef PEX_RTOS_START
PEX_RTOS_START();
#endif
for(;;){}
}
void Init_Uart(char ch ,int SysClk, int Baud)
{
int mReg,ubd;
*REG_RW(SIM_SCGC1) |= 0x1 << 10; // Enable the clock to the selected UART
mReg = *REG_RW(UART4_C2); // Tx, Rx are disabled
mReg = (mReg & ~(0x1 << 2)) | (0x0 << 2);
mReg = (mReg & ~(0x1 << 3)) | (0x0 << 3);
*REG_RW(UART4_C2) = mReg;
*REG_RW(UART4_C1) = 0; // all default settings
ubd = (uint32_t)((SysClk)/(Baud*16)); // Calculate Baud Settings
mReg = *REG_RW(UART4_BDH);
*REG_RW(UART4_BDH) = (mReg & ~(0x1F << 0)) | (ubd >> 8); // BDH
*REG_RW(UART4_BDL) = (uint8_t)(ubd & 0xff); // BDL
mReg = *REG_RW(UART4_C4); // BRFA
mReg = (mReg & ~(0x1F << 0)) | (0x1 << 2);
*REG_RW(UART4_C4) = mReg;
mReg = *REG_RW(UART4_C2); // Tx, Rx are enabled
mReg = (mReg & ~(0x1 << 2)) | (0x1 << 2);
mReg = (mReg & ~(0x1 << 3)) | (0x1 << 3);
*REG_RW(UART4_C2) = mReg;
mReg = *REG_RW(UART4_S2); // Most Significant Bit First
mReg = (mReg & ~(0x1 << 5)) | (0x0 << 0);
*REG_RW(UART4_S2) = mReg;
}
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Hello noah,
(1) Form your picture , i see you use KDS and KSDK, please tell me the version of KDS and SDK .
(2) IN you code, i see when initialize the UART component , you sue the code by yourself , and in the KSDK driver , there have
UART_DRV_Init , you can directly use , and under the SDK install directory , there are some UART demo , you can refer to :
...Freescale\KSDK_1.2.0\examples\frdmk64f\driver_examples\uart
(3) Also you can use the Processor Expert , directly add UART component , then configure , then it can generate code
(4) If you still want to know why is wrong about your code , please send your project to me , i will test it on my side .
Hope it helps
Have a great day,
Alice
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