Hi everyone, I hope you can help me with this problem, I have been with this issue during several days and the problem is not solved yet.
I have the FRDM-KL02 board connected with a DAC converter (AD5306) via I2C. I have configured the I2C1 with ports A8 and A9 as SCL and SDA:
#define BOARD_I2C_GPIO_SCL GPIO_MAKE_PIN(GPIOA_IDX, 8)
#define BOARD_I2C_GPIO_SDA GPIO_MAKE_PIN(GPIOA_IDX, 9)
#define BOARD_I2C_INSTANCE 1
The KL02 acts as Master and the DAC as slave. The first communication byte has to be the slave address (7 bits) followed by the typical R/W bit. After that, another 3 bytes has to be sent.
I have tried to use the "I2C_DRV_MasterSendDataBlocking" but it does not work fine.
I have debugged the code and when it tries to send the addres byte via I2C (inside the function "I2C_DRV_SendAddress"), the slave address value is not transfered to the I2C1_D register specifically when next function is called:
I2C_HAL_WriteByte(I2C1_BASE_PTR, addrBuff[0]); // addrBuff[0] contains the slave address with the R/W bit = 1
I have checked all the I2C1 registers, and they are correct. The main sequence for the I2C communication in my project is the next one:
// Initialize i2c master
OSA_Init();
I2C_DRV_MasterInit(BOARD_I2C_INSTANCE, &master); //i2c_master_state_t master;
/**********************************************/
// Master sends only data to slave (4 bytes: 1 Slave Addres + 1 pointer byte + 2 data bytes)
txBuff[0]=0x01U;
txBuff[1]=0x3FU;
txBuff[2]=0xFFU;
// Start transfer with buffer size is 1 byte
I2C_DRV_MasterSendDataBlockingAD5306(BOARD_I2C_INSTANCE, &device, NULL, 0, (const uint8_t*)txBuff, sizeof(txBuff), 1000);
Do you have any idea of what is happening? Could you suggest me any other way to do it correctly?
Thanks in advance. Waiting your suggestions.
