alvierahman90/qmk_firmware
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

arm_atsam ADC0 factory calibration correction

Browse Source 
Factory calibration data was not being loaded properly for ADC0, which affects the accuracy of 5V readings.
This commit is contained in:
patrickmt 2019-01-28 13:07:22 -05:00 committed by Drashna Jaelre
parent 9e784841c0
commit 60ae309ced
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
tmk_core/protocol/arm_atsam/adc.c
View File

@ -74,9 +74,9 @@ void ADC0_init(void)
while (ADC0->SYNCBUSY.bit.SAMPCTRL) { DBGC(DC_ADC0_SAMPCTRL_SYNCING_1); }
//Load factory calibration data
ADC0->CALIB.bit.BIASCOMP = (ADC0_FUSES_BIASCOMP_ADDR >> ADC0_FUSES_BIASCOMP_Pos) & ADC0_FUSES_BIASCOMP_Msk;
ADC0->CALIB.bit.BIASR2R = (ADC0_FUSES_BIASR2R_ADDR >> ADC0_FUSES_BIASR2R_Pos) & ADC0_FUSES_BIASR2R_Msk;
ADC0->CALIB.bit.BIASREFBUF = (ADC0_FUSES_BIASREFBUF_ADDR >> ADC0_FUSES_BIASREFBUF_Pos) & ADC0_FUSES_BIASREFBUF_Msk;
ADC0->CALIB.bit.BIASCOMP = ((*(uint32_t *)ADC0_FUSES_BIASCOMP_ADDR) & ADC0_FUSES_BIASCOMP_Msk) >> ADC0_FUSES_BIASCOMP_Pos;
ADC0->CALIB.bit.BIASR2R = ((*(uint32_t *)ADC0_FUSES_BIASR2R_ADDR) & ADC0_FUSES_BIASR2R_Msk) >> ADC0_FUSES_BIASR2R_Pos;
ADC0->CALIB.bit.BIASREFBUF = ((*(uint32_t *)ADC0_FUSES_BIASREFBUF_ADDR) & ADC0_FUSES_BIASREFBUF_Msk) >> ADC0_FUSES_BIASREFBUF_Pos;
//Enable
ADC0->CTRLA.bit.ENABLE = 1;