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-rw-r--r--tmk_core/protocol/arm_atsam/adc.h37
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diff --git a/tmk_core/protocol/arm_atsam/adc.h b/tmk_core/protocol/arm_atsam/adc.h
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+/*
+Copyright 2018 Massdrop Inc.
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef _ADC_H_
+#define _ADC_H_
+
+#define ADC_5V_START_LEVEL 2365
+
+#define ADC_5V ADC_INPUTCTRL_MUXPOS_AIN12_Val
+#define ADC_CON1 ADC_INPUTCTRL_MUXPOS_AIN14_Val
+#define ADC_CON2 ADC_INPUTCTRL_MUXPOS_AIN13_Val
+
+extern uint16_t v_5v;
+extern uint16_t v_5v_avg;
+extern uint16_t v_con_1;
+extern uint16_t v_con_2;
+extern uint16_t v_con_1_boot;
+extern uint16_t v_con_2_boot;
+
+void ADC0_clock_init(void);
+void ADC0_init(void);
+
+#endif //_ADC_H_