I am running MCP9808 on NRF52 EVB, i have this following program which is not giving the correct values on terminal display

RE: I am running MCP9808 on NRF52 EVB, i have this following program which is not giving the correct values on terminal display

Jørgen Holmefjord — Mon, 24 Jul 2017 07:16:54 GMT

This depends on the device, but typically this is done by writing two bytes to the device. First the register address, and then the value of the register. This is shown in the TWI sensor example in the SDK:

#define CONF_REG_ADDR 0xXX
#define CONF_REG_VAL  0b00001000

void LM75B_set_mode(void)
{
    ret_code_t err_code;

    uint8_t reg[2] = {CONF_REG_ADDR, CONF_REG_VAL};
    err_code = nrf_drv_twi_tx(&m_twi, MCP_9808_ADDR, reg, sizeof(reg), false);
    APP_ERROR_CHECK(err_code);
    while (m_xfer_done == false);
}

RE: I am running MCP9808 on NRF52 EVB, i have this following program which is not giving the correct values on terminal display

vishal — Fri, 21 Jul 2017 14:49:22 GMT

Jorgen, i have a quick question.............how can we write a value to the register in my case if you can see below

err_code = nrf_drv_twi_tx(&m_twi_mcp9808, MCP_9808_ADDR, reg, sizeof(reg), false);

i have to write a value 00001000 to config register how can we do that? solving this may solve the question Thank you

RE: I am running MCP9808 on NRF52 EVB, i have this following program which is not giving the correct values on terminal display

Jørgen Holmefjord — Fri, 21 Jul 2017 08:36:38 GMT

Unfortunately, we don't have any example code for this. What values are you seeing, and what do you expect to see?