soft reset in i2c api

RE: soft reset in i2c api

MartinBL — Wed, 07 Dec 2016 11:20:56 GMT

If you are suspecting that you have configured your I2C hardware incorrectly you can use this simple example to debug.

RE: soft reset in i2c api

MartinBL — Wed, 07 Dec 2016 11:19:31 GMT

Instead of using sd_nvic_SystemReset() right away I would recommend that you use APP_ERROR_CHECK(err_code) while your are still debugging. Then have a look here to see how you can use that to debug.

RE: soft reset in i2c api

nordicbeginner — Wed, 07 Dec 2016 10:33:50 GMT

ok how to check that device has reset or not??

RE: soft reset in i2c api

MartinBL — Wed, 07 Dec 2016 10:30:46 GMT

So by using your code your device will soft reset every time mma8452_I2C_register_read() returns an error. If you have connected something wrong or done something incorrectly the function will always return an error and your device will continuously reset forever. Is this the infinite loop you talk about?

RE: soft reset in i2c api

nordicbeginner — Wed, 07 Dec 2016 09:41:37 GMT

my problem is that if mma8452_I2C_register_read() will get error , then i want to use soft reset

RE: soft reset in i2c api

nordicbeginner — Wed, 07 Dec 2016 09:31:23 GMT

if i disconnect scl,sda from mma8452 to nrf51. then it can't get data

RE: soft reset in i2c api

MartinBL — Wed, 07 Dec 2016 09:12:56 GMT

Hi. It sounds like mma8452_I2C_register_read() is returning an error. If so what is the error?

RE: soft reset in i2c api

nordicbeginner — Wed, 07 Dec 2016 06:28:00 GMT

waiting for anyone's response