S32K中的主题 Re: Do you have flash read/write sample code with s32K144

Do you have flash read/write sample code with s32K144

alice_th — Mon, 19 Jun 2023 08:57:55 GMT

Hello

s32k144 flash API don't support read ?

i find only below API FLASH_DRV_ReadResource can read data from flash , it only support 8bytes ?

if i want to support any length to read the data from, can i do it below ? or do you have example project or code ?

BTW,i need the flex_nvm data from data (addr:0x10000000U)

status_t hal_read_from_flash(uint32_t address, uint8_t* p_bufsrc,uint32_t length)
{
uint8_t data[8];
int i;
int ret;
for(i=0;i<length/8;i++)
{
memset(data,0,8);
FLASH_DRV_ReadResource(&ssdConfig,(address+8*i),data,0);
memcpy(p_bufsrc+i*8,data,8);
}
int remain_len = length%8;
ret = FLASH_DRV_ReadResource(&ssdConfig,(address+8*i),data,0);
memcpy(p_bufsrc+i*8+remain_len,data,remain_len);
return ret;
}

/*FUNCTION**********************************************************************
*
* Function Name : FLASH_DRV_ReadResource
* Description : Read data from special purpose memory in Flash memory module
* including P-Flash IFR, swap IFR, D-Flash IFR space and version ID.
*
*END**************************************************************************/
status_t FLASH_DRV_ReadResource(const flash_ssd_config_t * pSSDConfig,
uint32_t dest,
uint8_t * pDataArray,
uint8_t resourceSelectCode)

Re: Do you have flash read/write sample code with s32K144

alice_th — Mon, 19 Jun 2023 11:30:50 GMT

BTW,i need read flash(addr:0x10000000U) data to ram with random length

Re: Do you have flash read/write sample code with s32K144

danielmartynek — Tue, 20 Jun 2023 08:27:19 GMT

Hello Alice,

There is no SDK API to read the flash, the FLASH_DRV_ReadResource() launches the FTFx_READ_RESOURCE command (FTFx_CMD 0x3) that is not supported on S32K1xx.

But the flash can be easily read by a pointer.

Or you can use the RTD Ftfc_Ip driver that has this API:

Ftfc_Fls_Ip_Read()

Regards,

Daniel

Re: Do you have flash read/write sample code with s32K144

alice_th — Tue, 20 Jun 2023 09:05:44 GMT

ok, got it, thanks

another question is

does this osif_IsIsrContext API is get current status in isr or task with freertos?

can i used it in printf/scanf ?

static inline bool osif_IsIsrContext(void)

{

bool is_isr = false;

uint32_t ipsr_code = (uint32_t)( (S32_SCB->ICSR & S32_SCB_ICSR_VECTACTIVE_MASK) >> S32_SCB_ICSR_VECTACTIVE_SHIFT );

if (ipsr_code != 0u)

{

is_isr = true;

}

return is_isr;

}

int_t __read_console(__file_handle handle, uchar_t * buffer, size_t * count)

{

#ifdef rtos_version

if(osif_IsIsrContext() == true)

taskDISABLE_INTERRUPTS();

else

{

taskENTER_CRITICAL();

}

#endif

uint32_t bytesRemain;

bool MsgDone=false;

uchar_t new_lin[]={"\n"};

int i=0;

while (MsgDone==false)

{

LPUART_DRV_ReceiveData(INST_LPUART1, &buffer[i], 1);

while(LPUART_DRV_GetReceiveStatus(INST_LPUART1, &bytesRemain) != STATUS_SUCCESS);

LPUART_DRV_SendData(INST_LPUART1, &buffer[i], 1);

while(LPUART_DRV_GetTransmitStatus(INST_LPUART1, &bytesRemain) != STATUS_SUCCESS);

if(buffer[i++] == '\r')

{

buffer[i-1]='\n';

MsgDone = true;

}

LPUART_DRV_SendData(INST_LPUART1, new_lin, 1);

while(LPUART_DRV_GetTransmitStatus(INST_LPUART1, &bytesRemain) != STATUS_SUCCESS);

buffer[i]=0;

*count = (size_t)i;

#ifdef rtos_version

if(osif_IsIsrContext() == true)

taskENABLE_INTERRUPTS();

else

{

taskEXIT_CRITICAL();

}

#endif

return 0;

}

Re: Do you have flash read/write sample code with s32K144

danielmartynek — Tue, 20 Jun 2023 10:31:28 GMT

Can you create a new thread for this question?

It has nothing to do with the flash.

Thank you,

Daniel