Porting i2c driver to Zephyr

[snowuyl]

I would like porting i2c driver from RF5_SDK_16 to Zephyr. Does Zephyr provide functions related to the following RF5_SDK_16 functions?

nrf_drv_twi_init()
nrf_drv_twi_enable()
nrf_drv_twi_uninit()
nrf_drv_twi_tx()

Does any sample code for nRF52832 i2c?

[SwRa]

Hello,

You could take a look at the I2C drivers in DevAcademy: https://academy.nordicsemi.com/topic/i2c-driver/

Best Regards,

Swathy

[snowuyl]

Thanks for your reply! I have writes the following code for testing i2c_burst_read(). But i2c_burst_read() return -5. What is meaning of -5 error code and how can I fix this issue?

testing code:

int i2cInit(void) {
int ret;

if (!device_is_ready(_gI2cDev)) {
printk("I2C: Device is not ready.\n");
return ERROR_I2C_INITIALIZE_FAIL;
}
printk("I2C: Device is ready.\n");

const uint32_t i2cCfg = I2C_MODE_CONTROLLER | I2C_SPEED_SET(I2C_SPEED_FAST);
ret = i2c_configure(_gI2cDev, i2cCfg);
if (ret < 0) {
printk("I2C: Configure failed err=%d\n", ret);
}
printk("I2C: Configure okay.\n");

#define AFE4900_I2C_ADDRESS 0x5B
i2cSlaveAddr(AFE4900_I2C_ADDRESS);
uint8_t buf[3];
ret = i2c_burst_read(_gI2cDev, AFE4900_I2C_ADDRESS, 0x28, buf, 3);
if (ret < 0) {
printk("I2C: i2c_burst_read() failed err=%d\n", ret);
} else {
printk("0x%x 0x%x 0x%x\n", buf[2], buf[1], buf[0]);
}

return 0;
}

log messages:

00> *** Booting Zephyr OS build v3.2.99-ncs2 ***
00> Starting button Test example
00> before calling i2cInit()
00> I2C: Device is ready.
00> I2C: Configure okay.
00> [00:00:00.511,199] <err> i2c_nrfx_twim: Error on I2C line occurred for message 0
00> I2C: i2c_burst_read() failed err=-5

[snowuyl]

7245.custom_nrf52832.zip

[snowuyl]

2045.minimal_log_i2c.zip