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Tool/software:
Hello,
I am trying to implement a minimal way to poll one or more of the junction temperature sensors in the Sitara AM2432 SoC without interrupts or the ESM. I adapted the following from the example project in the SDK (8.6.0.45) however I read a temperature of -41 degrees: the minimum. Is it possible to accomplish what I am trying with only the SDL_VTM interface?
SDL_VTM_configTs cfgTs; SDL_VTM_intrCtrl ctrl; SDL_VTM_configVd cfgVd; SDL_VTM_Stat_read_ctrl readCtrl; SDL_VTM_Stat_val statusVal; int32_t tmp; cfgTs.configTsCtrl = SDL_VTM_VD_CONFIG_CTRL_SET_CTL; cfgTs.tsCtrl_cfg.valid_map = SDL_VTM_TS_CTRL_MODE_VALID; cfgTs.tsCtrl_cfg.mode = SDL_VTM_TS_CTRL_CONTINUOUS_MODE; SDL_VTM_initTs(SDL_VTM_INSTANCE_TS_0 , &cfgTs); cfgVd.configVdCtrl = SDL_VTM_VD_CONFIG_CTRL_EVT_SEL; cfgVd.vd_temp_evts = SDL_VTM_VD_EVT_SELECT_TEMP_SENSOR_0; SDL_VTM_initVd(SDL_VTM_INSTANCE_VD_DOMAIN_0, &cfgVd); readCtrl = SDL_VTM_TS_READ_DATA_OUT_VAL; SDL_VTM_getSensorStatus(SDL_VTM_INSTANCE_TS_0, &readCtrl, &statusVal); SDL_VTM_tsConvADCToTemp(statusVal.data_out, SDL_VTM_INSTANCE_TS_0, &tmp);
Hello Joshua,
I am looking at your queries and you may expect reply in one or two days .
Regards,
Anil.
Hello Joshua,
The above code seems works .
Can you please share the temperature register value for the Temparture sensor 0 ?
Here, the issues come in two ways. One with the conversion from adc to temperature API is giving wrong values.
And, the second one, we need to give a delay or poll the end of conversion bit status before reading data which ensures proper ADC data.
Regards,
Anil.
Hi there, sorry for the late response!
The code is working now, I needed to initialize the SDL via the SDL_DPL_init() routine with the AddrTranslateP_getLocalAddr() function registered as the DPL interface's addrTranslate() callback.