99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/*
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* SOC/PCB Temperature driver for Nintendo Switch's TI TMP451
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*
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* Copyright (c) 2018 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by: MasaGratoR
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*/
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//#include <utils/types.h>
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#include "i2c.h"
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//#define TMP451_I2C_ADDR 0x4C
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#define TMP451_PCB_TEMP_REG 0x00
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#define TMP451_SOC_TEMP_REG 0x01
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/*
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#define TMP451_CONFIG_REG 0x09
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#define TMP451_CNV_RATE_REG 0x0A
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*/
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#define TMP451_SOC_TEMP_DEC_REG 0x10
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#define TMP451_PCB_TEMP_DEC_REG 0x15
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/*
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#define TMP451_SOC_TMP_OFH_REG 0x11
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#define TMP451_SOC_TMP_OFL_REG 0x12
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*/
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// If input is false, the return value is packed. MSByte is the integer in oC
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// and the LSByte is the decimal point truncated to 2 decimal places.
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// Otherwise it's an integer oC.
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/*
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u16 tmp451_get_soc_temp(bool integer);
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u16 tmp451_get_pcb_temp(bool integer);
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void tmp451_init();
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void tmp451_end();
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*/
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Result Tmp451ReadReg(u8 reg, u8 *out)
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{
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u8 data = 0;
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Result res = I2cReadRegHandler8(reg, I2cDevice_Tmp451, &data);
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if (R_FAILED(res))
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{
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return res;
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}
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*out = data;
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return res;
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}
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Result Tmp451GetSocTemp(float* temperature) {
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u8 integer = 0;
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u8 decimals = 0;
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Result rc = Tmp451ReadReg(TMP451_SOC_TEMP_REG, &integer);
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if (R_FAILED(rc))
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return rc;
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rc = Tmp451ReadReg(TMP451_SOC_TEMP_DEC_REG, &decimals);
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if (R_FAILED(rc))
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return rc;
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decimals = ((u16)(decimals >> 4) * 625) / 100;
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*temperature = (float)(integer) + ((float)(decimals) / 100);
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return rc;
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}
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Result Tmp451GetPcbTemp(float* temperature) {
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u8 integer = 0;
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u8 decimals = 0;
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Result rc = Tmp451ReadReg(TMP451_PCB_TEMP_REG, &integer);
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if (R_FAILED(rc))
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return rc;
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rc = Tmp451ReadReg(TMP451_PCB_TEMP_DEC_REG, &decimals);
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if (R_FAILED(rc))
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return rc;
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decimals = ((u16)(decimals >> 4) * 625) / 100;
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*temperature = (float)(integer) + ((float)(decimals) / 100);
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return rc;
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}
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