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);
