i.MX ProcessorsのトピックRe: i.MX8M mini TMU calibration method

i.MX8M mini TMU calibration method

Tori-san — Fri, 09 Apr 2021 08:55:13 GMT

Hello, According to the IMX8MMRM.pdf clause 5.4.6, hardware will do 1 point calibration (software can do 2 points calibration). So, is it possible to calibrate the temperature with both HW / SW? In that case, how to enable each HW / SW calibration? How to check which one is currently valid calibration method?

Re: i.MX8M mini TMU calibration method

Yuri — Mon, 12 Apr 2021 08:58:02 GMT

@Tori-san
Hello,

I've sent You some comments directly regarding

https://community.nxp.com/t5/i-MX-Processors/i-MX8M-mini-TMU-2-points-DC-offset-value-confirmation/m-p/1259535/highlight/false#M172339

Regards,
Yuri.

Re: i.MX8M mini TMU calibration method

Tori-san — Fri, 16 Apr 2021 02:23:52 GMT

Hi Yuri, I appreciate your reply for questions I posted. The question has become almost clear and I sent some comment as reply directly.

Re: i.MX8M mini TMU calibration method

Tori-san — Mon, 19 Apr 2021 02:19:06 GMT

Hi Yuri,

Thank you for your reply.

I interpret that HW 1-point calibration is enabled by default and it using slope=1 as the equation.

Therefore, in case of HW, following is used for 1-point calibration, and the offset at 85C is not an issue.

Tcalib_HW = 1*(Tsense - TE1) + 25

Best regards,

Tori-san.