Kinetis Software Development Kit中的主题 I2C Slave plus Hardware timer in FRDM-K64F

I2C Slave plus Hardware timer in FRDM-K64F

viniciusmaciel — Tue, 05 May 2015 22:38:17 GMT

Hi,

I have a FRDM-K64F kit and I'm using Kinetis Design Studio 2.0 with Kinetis SDK 1.1.0

I'm trying to attach examples i2c_comm + hwtimer_demo, but there is a problem with hardware timer initialization. When I call the function HWTIMER_SYS_Init(), the firmware gets stuck.

int main(void) {     i2c_slave_state_t slave;       i2cData_t i2cData =     {       .subAddress = Invalid_Subaddress_Index,       .data = 0,       .state = CMD_MODE     };       i2c_slave_user_config_t userConfig =     {         .address = 0x3A,         .slaveListening = true,         .slaveCallback  = i2c_slave_event_callback_passive,         .callbackParam  = &i2cData, #if FSL_FEATURE_I2C_HAS_START_STOP_DETECT         .startStopDetect  = false, #endif #if FSL_FEATURE_I2C_HAS_STOP_DETECT         .stopDetect       = false, #endif     };       // Low Power Configuration     smc_power_mode_config_t smcConfig;     smc_power_mode_protection_config_t smcProtConfig;       // Init struct     memset(&smcConfig, 0, sizeof(smcConfig));     memset(&smcProtConfig, 0, sizeof(smcProtConfig));       hardware_init();     dbg_uart_init();     configure_i2c_pins(BOARD_I2C_COMM_INSTANCE);     OSA_Init();     GPIO_DRV_Init(0, ledPins);       // Initiate I2C instance module     I2C_DRV_SlaveInit(BOARD_I2C_COMM_INSTANCE, &userConfig, &slave);       printf("\r\n====== I2C Slave ======\r\n\r\n");       // turn LED_slave on to indicate I2C slave status is waiting for date receiving     LED_turnon_slave();     LED_turnoff_master();     //OSA_TimeDelay(50);       printf("\r\n I2C slave enters low power mode...\r\n");    // Hwtimer initialization   if (kHwtimerSuccess != HWTIMER_SYS_Init(&hwtimer, &HWTIMER_LL_DEVIF, HWTIMER_LL_ID, 5, NULL))   {   printf("\r\nError: hwtimer initialization.\r\n");   }   if (kHwtimerSuccess != HWTIMER_SYS_SetPeriod(&hwtimer, HWTIMER_LL_SRCCLK, HWTIMER_PERIOD))   {   printf("\r\nError: hwtimer set period.\r\n");   }   if (kHwtimerSuccess != HWTIMER_SYS_RegisterCallback(&hwtimer, hwtimer_callback, NULL))   {   printf("\r\nError: hwtimer callback registration.\r\n");   }   if (kHwtimerSuccess != HWTIMER_SYS_Start(&hwtimer))   {   printf("\r\nError: hwtimer start.\r\n");   }           // LED_slave is still on during low power mode until I2C master send data to slave.     // Turn off LED_slave to indicate MCU wake up by I2C address matching interrupt     LED_turnoff_slave();     //printf("\r\n I2C slave wakes up from low power mode by I2C address matching.\r\n");     printf("Initialization OK\n");       while(1)     {     } }

Re: I2C Slave plus Hardware timer in FRDM-K64F

viniciusmaciel — Mon, 02 Nov 2020 13:17:14 GMT

Hi,

More information that may help. Here is debugger trace function:

The firmware gets stuck here:

DefaultISR:

b DefaultISR

.size DefaultISR, . - DefaultISR

Re: I2C Slave plus Hardware timer in FRDM-K64F

Alice_Yang — Wed, 06 May 2015 08:31:18 GMT

Hello ,

I have test the "i2c_comm_slave_frdmk64" demo on my side ,it can work well .How about on your side .

On you project , where be mainly changed ?

I have suggestion:

(1) delete the ".matadate" under workspace, then build , then test .

(2) Please trace into the function"HWTIMER_SYS_Init()", check where made the code enter the unhandled interrupt.

If still can not work well , you can send your project to me , i will test it on my side.

Hope it helps

Alice

Re: I2C Slave plus Hardware timer in FRDM-K64F

giacomopetrini — Wed, 06 May 2015 14:31:16 GMT

It seems that the CPU called an interrupt, but the corresponding ISR is not set.

Verify that you have a function for every interrupt you have enabled.

Best Regards

Giacomo

Re: I2C Slave plus Hardware timer in FRDM-K64F

viniciusmaciel — Thu, 07 May 2015 01:14:02 GMT

Hi Alice,

The example i2c_comm_slave_frdmk64 works, but if I add the code hwtimer_demo_frdmk64f inside it, it stops working. The reverse is also true, hwtimer_demo_frdmk64f works without i2c_slave code.

(1) delete the ".matadate" under workspace, then build , then test - Doing this still does not work.

(2) The last line executed: INT_SYS_InstallHandler() at fsl_interrupt_manager.c:80 0x3b82

/* Set handler into vector table */
    __VECTOR_RAM[irqNumber + 16] = (uint32_t)handler;

As said giacomopetrini, it's an interrupt problem.

My project: i2c_comm.zip - Google Drive

Re: I2C Slave plus Hardware timer in FRDM-K64F

Alice_Yang — Thu, 07 May 2015 07:58:41 GMT

Hello Vinicius,

I don't know why i can't get your project , please attach it on here :

Or send it to email "b51432@freescale.com"

Alice

Re: I2C Slave plus Hardware timer in FRDM-K64F

viniciusmaciel — Thu, 07 May 2015 11:26:38 GMT

Hi,

Ok, I managed to attach the file. :smileygrin:

Re: I2C Slave plus Hardware timer in FRDM-K64F

viniciusmaciel — Thu, 07 May 2015 19:26:07 GMT

Hi,

I have found that others have the same problem with WDOG_EWM_IRQHandler ():

https://community.freescale.com/thread/344647

https://community.freescale.com/thread/353329

It seems be "Buggy startup code perhaps", startup_MK64F12.S.

Re: I2C Slave plus Hardware timer in FRDM-K64F

DavidS — Thu, 07 May 2015 21:22:03 GMT

Hi Vinicius,

I think the root cause of the exception is that the code wants Vector Table in RAM but it is in Flash.

As I stepped through your code it dies at following line in fsl_interrupt_manager.c INT_SYS_InstallHandler() function:

__VECTOR_RAM[irqNumber + 16] = (uint32_t)handler;

//DES this code assumes vector table in RAM so if it is in flash an exception occurs when it tries to write to flash space.

Will look into this further but wanted to give you update.

Regards,

David

Re: I2C Slave plus Hardware timer in FRDM-K64F

jasonscott — Fri, 05 Aug 2016 15:12:53 GMT

Hey David,

Was a solution ever found for this?

-Jason

Re: I2C Slave plus Hardware timer in FRDM-K64F

DavidS — Fri, 05 Aug 2016 15:38:08 GMT

Hi Jason,

Short answer: no.

Longer answer: never heard back from others if my suggestion resolved issue or if they found another solution. Without feedback I didn't anything else on this topic.

The KDS and KSDK referenced are very old have had several major updates. KDS_3.2...KSDK_v2.

They most likely have resolved whatever the issue.

Regards,

David

Re: I2C Slave plus Hardware timer in FRDM-K64F

jasonscott — Fri, 05 Aug 2016 16:39:34 GMT

Thanks for your response David!

-Jason