I have stm8l discovery and Can any one help with i2c configuration here. I am using LP55231 led driver and I do not know whether this configuration is correct.

[VSrin]

Please go through the code and help me out in the configuration.

void i2c_init(void) 

{

  I2C1_FREQR = 0x20;// 16mHz

  I2C1_CCRL = 0x50; // 160

  I2C1_OARH = 0x40; // 7-bit addressing and add-mode configuration

  I2C1_CR1 = 0x01; // enable peripheral

}

void i2c_start(void) 

{

  I2C1_CR2 |= 0x01; // start bit

(void) I2C1_SR1; // clear EV5

}

void i2c_write(uint8_t data) 

{

  I2C1_DR = data;

  while (!(I2C1_SR1 & (0x80))); // data transmission polling

}

void i2c_write_addr(uint8_t addr) 

{

  I2C1_DR = addr; // address of led driver

 (void) I2C1_SR1;

  (void) I2C1_SR3; // clear EV6

}

[VSrin]

My code is getting stuck in "void i2cwrite" function in the while loop.

[Tesla DeLorean]

All looks very crude, are you sure there are some better I2C examples you can review?

[VSrin]

This is what I found in the internet. And i modified it according to my project

[Tesla DeLorean]

The alternative would be to read and understand the chip level documentation.

https://www.st.com/en/embedded-software/stsw-stm8016.html

en.stsw-stm8016.zip\STM8L15x-16x-05x-AL31-L_StdPeriph_Lib\Project\STM8L15x_StdPeriph_Examples\I2C\I2C_EEPROM