i.MX RT Crossover MCUsのトピックRe: MIMXRT685 I3C interrupt master example

MIMXRT685 I3C interrupt master example

DVL — Tue, 22 Nov 2022 11:46:11 GMT

此段SAMPLE程式碼只有看到示波器slaveAddress波形,但沒有Data資料,請問需要修改何處呢? 謝謝~

/*******************************************************************************
* Definitions
******************************************************************************/
#define EXAMPLE_MASTER I3C
#define EXAMPLE_I2C_BAUDRATE 400000
#define I3C_MASTER_CLOCK_FREQUENCY CLOCK_GetI3cClkFreq()
#define I3C_MASTER_SLAVE_ADDR_7BIT 0x1E
#define WAIT_TIME 1000
#define I3C_DATA_LENGTH 33

i3c_master_config_t masterConfig;
i3c_master_transfer_t masterXfer;
status_t result = kStatus_Success;

/* Attach main clock to I3C, 396MHz / 4 = 99MHz. */
CLOCK_AttachClk(kMAIN_CLK_to_I3C_CLK);
CLOCK_SetClkDiv(kCLOCK_DivI3cClk, 4);

BOARD_InitBootPins();
BOARD_InitBootClocks();
BOARD_InitDebugConsole();

PRINTF("\r\nI3C board2board Interrupt example -- Master transfer.\r\n");

/* I3C mode: Set up i3c master to work in I3C mode, send data to slave*/
/* First data in txBuff is data length of the transmitting data. */
g_master_txBuff[0] = I3C_DATA_LENGTH - 1U;
for (uint32_t i = 1U; i < I3C_DATA_LENGTH; i++)
{
g_master_txBuff[i] = i - 1;
}

PRINTF("\r\nStart to do I3C master transfer in I2C mode.\r\n");

PRINTF("Master will send data :");
for (uint32_t i = 0U; i < I3C_DATA_LENGTH - 1U; i++)
{
if (i % 8 == 0)
{
PRINTF("\r\n");
}
PRINTF("0x%2x ", g_master_txBuff[i + 1]);
}
PRINTF("\r\n\r\n");

I3C_MasterGetDefaultConfig(&masterConfig);
masterConfig.baudRate_Hz.i2cBaud = EXAMPLE_I2C_BAUDRATE;
masterConfig.baudRate_Hz.i3cPushPullBaud = 4000000U;
masterConfig.baudRate_Hz.i3cOpenDrainBaud = 1500000U;
masterConfig.enableOpenDrainStop = false;
I3C_MasterInit(EXAMPLE_MASTER, &masterConfig, I3C_MASTER_CLOCK_FREQUENCY);

/* Create I3C handle. */
I3C_MasterTransferCreateHandle(EXAMPLE_MASTER, &g_i3c_m_handle, &masterCallback, NULL);

memset(&masterXfer, 0, sizeof(masterXfer));

/* subAddress = 0x01, data = g_master_txBuff - write to slave.
start + slaveaddress(w) + subAddress + length of data buffer + data buffer + stop*/
uint8_t deviceAddress = 0x01U;
masterXfer.slaveAddress = I3C_MASTER_SLAVE_ADDR_7BIT;
masterXfer.direction = kI3C_Write;
masterXfer.busType = kI3C_TypeI2C;
masterXfer.subaddress = (uint32_t)deviceAddress;
masterXfer.subaddressSize = 1;
masterXfer.data = g_master_txBuff;
masterXfer.dataSize = I3C_DATA_LENGTH;
masterXfer.flags = kI3C_TransferDefaultFlag;

result = I3C_MasterTransferNonBlocking(EXAMPLE_MASTER, &g_i3c_m_handle, &masterXfer);

Re: MIMXRT685 I3C interrupt master example

Alice_Yang — Tue, 29 Nov 2022 09:09:59 GMT

Hello @DVL

What Data do you mean? Does your example from SDK? If yes, there is a readme.txt under DOC, you can have a look.

Alice

Re: MIMXRT685 I3C interrupt master example

DVL — Wed, 07 Dec 2022 02:54:10 GMT

Hello Alice_Yang :

我有私下傳訊給你,請問是否收到呢?非常感謝~

Re: MIMXRT685 I3C interrupt master example

Alice_Yang — Wed, 14 Dec 2022 08:41:35 GMT

Hello @DVL

Recommend you do not send private message, because it hard to notice it.

If you have do not want your information to be public, you can create a private ticket:

https://support.nxp.com/s/?language=en_US

that only support engineer can see your message.

About your description in your message, recommend you use logical analysis measure the data slave send, and refer to Datasheet of your EEPROM to check the whether returned a right slave address.

Alice

Re: MIMXRT685 I3C interrupt master example

DVL — Sun, 18 Dec 2022 16:12:41 GMT

你好@Alice

我是使用MIMXRT685開發版,需要使用I2C或I3C去讀寫EEPROM.
請問是否有範例可以參考使用使用I2C或I3C去讀寫EEPROM非常謝謝

例如使用I2C狀況下:其MASTER_BOARD設定為EVK-MIMXRT685 board,SLAVE_BOARD設定成EEPROM IC,MASTER_BOARD的J27-2,J27-1,J28-7供SLAVE_BOARD連接使用,但當掃描Slave Address時,只會出現內建的Slave address 0x0E & 0x1A & 0x34 & 0x35 Address回應

Re: MIMXRT685 I3C interrupt master example

Alice_Yang — Mon, 26 Dec 2022 06:37:56 GMT

Hello @DVL

There is no demo with EEPROM, while there is I2C with accelerometer demo under SDK, you can have a look: "evkmimxrt685_i2c_read_accel_value_transfer "

Alice