rt1176 i2c 10bit

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

rt1176 i2c 10bit

710 Views
vladimirchernin
Contributor III

hi!

is nxp rt1176 suport i2c 10bit address ?

I need to read 2 byte register and read 2 byte value

its dosnt work please help to find out

my code is below

void BOARD_LPI2C_Init(LPI2C_Type *base, uint32_t clkSrc_Hz)
{
lpi2c_master_config_t lpi2cConfig = {0};

LPI2C_MasterGetDefaultConfig(&lpi2cConfig);

lpi2cConfig.debugEnable = false;
lpi2cConfig.ignoreAck = false;
lpi2cConfig.pinConfig = kLPI2C_2PinOpenDrain;
lpi2cConfig.baudRate_Hz = 1000000U;
lpi2cConfig.busIdleTimeout_ns = 0;
lpi2cConfig.pinLowTimeout_ns = 0;
lpi2cConfig.sdaGlitchFilterWidth_ns = 0;
lpi2cConfig.sclGlitchFilterWidth_ns = 0;

LPI2C_MasterInit(base, &lpi2cConfig, clkSrc_Hz);
}

status_t BOARD_LPI2C_Send(LPI2C_Type *base,
uint8_t deviceAddress,
uint32_t subAddress,
uint8_t subAddressSize,
uint8_t *txBuff,
uint8_t txBuffSize)
{
lpi2c_master_transfer_t xfer;

xfer.flags = kLPI2C_TransferDefaultFlag;
xfer.slaveAddress = deviceAddress;
xfer.direction = kLPI2C_Write;
xfer.subaddress = subAddress;
xfer.subaddressSize = subAddressSize;
xfer.data = txBuff;
xfer.dataSize = txBuffSize;

return LPI2C_MasterTransferBlocking(base, &xfer);
}

status_t BOARD_LPI2C_Receive(LPI2C_Type *base,
uint8_t deviceAddress,
uint32_t subAddress,
uint8_t subAddressSize,
uint8_t *rxBuff,
uint8_t rxBuffSize)
{
lpi2c_master_transfer_t xfer;

xfer.flags = kLPI2C_TransferDefaultFlag;
xfer.slaveAddress = deviceAddress;
xfer.direction = kLPI2C_Read;
xfer.subaddress = subAddress;
xfer.subaddressSize = subAddressSize;
xfer.data = rxBuff;
xfer.dataSize = rxBuffSize;

return LPI2C_MasterTransferBlocking(base, &xfer);
}

 

 

Tags (3)
0 Kudos
4 Replies

693 Views
vladimirchernin
Contributor III

hi!

Thanks can you show code example ? what register to config to support 10 bit i dont find it in SDK LPI2C config structure.

Regards

0 Kudos

595 Views
Miguel04
NXP TechSupport
NXP TechSupport

Hi @vladimirchernin 

We don't have examples for 10-bit addressing. 

Please see this link which explains how the 10 bits address is used. Also, the I2C used as master do not need a register configuration to work with 10 bits address.

Best Regards, Miguel.

0 Kudos

698 Views
Miguel04
NXP TechSupport
NXP TechSupport

Hi @vladimirchernin 

The LPI2C module supports 7-bit and 10-bit addressing. See chapter 69.2.2 Features from the RT1170 reference manual.

Best Regards, Miguel.

0 Kudos

691 Views
vladimirchernin
Contributor III

hi!

Thanks can you show code example ? what register to config to support 10 bit i dont find it in SDK LPI2C config structure.

Regards

0 Kudos