S32KのトピックRe: I2C Scanner using S32K146EVB-Q144

I2C Scanner using S32K146EVB-Q144

Nibesh — Wed, 05 Jun 2024 09:15:15 GMT

Hello I am developing I2C Scanner using S32K146EVB Board using S32 Design Studio.
I have develop the code using LPI2C0 and LPUART2, I am getting some problem on my code.
I have attached my code for your kind reference.

Re: I2C Scanner using S32K146EVB-Q144

Nibesh — Thu, 06 Jun 2024 13:20:34 GMT

Hello
@VaneB @Senlent

Will you check my this thread for I2C Scanner ??

I hope to hear from you soon!

Re: I2C Scanner using S32K146EVB-Q144

Robin_Shen — Fri, 07 Jun 2024 05:13:18 GMT

Seems that you configure I2C ignore NACK in LPI2C_init: LPI2C Master will treat a received NACK as if it (NACK) was an ACK

void LPI2C_init(void)

{

PCC->PCCn[PCC_LPI2C0_INDEX] |= PCC_PCCn_PCS(2) /* Clk src: SIRCDIV2_CLK */

| PCC_PCCn_CGC_MASK; /* Enable clock for LPI2C0 */

LPI2C0->MCFGR1 = LPI2C_MCFGR1_PRESCALE(2) /* Prescale = 4*/

|LPI2C_MCFGR1_IGNACK_MASK; /* Ignore NACK*/

Please modify the settings and then check the ACK.

Best Regards,
Robin

Re: I2C Scanner using S32K146EVB-Q144

Nibesh — Fri, 07 Jun 2024 05:22:48 GMT

Hello @Robin_Shen

Will you modify my code, as I am unable to do it.

I hope to hear you soon.

Thank You

Re: I2C Scanner using S32K146EVB-Q144

Robin_Shen — Tue, 11 Jun 2024 09:06:52 GMT

Sorry, have you modified the IGNACK settings and tested? Will the NDF(NACK Detect Flag) be set now?

Table 52-10. Master Interrupts and DMA Requests NDF.png

Since there are many cases to be handled recently, I have not had time to modify and test your project.