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55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
/*
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* Copyright (C) 2019 Gunar Schorcht
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup boards_esp32_ttgo-t-beam
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* @{
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*
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* @file
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* @brief Board specific definitions for TTGO T-Beam board
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*
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* @author Gunar Schorcht <gunar@schorcht.net>
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*/
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#include "board.h"
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#if MODULE_ESP32_TTGO_T_BEAM_V1_0
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#include "periph/i2c.h"
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define AXP192_I2C_ADDR (0x34)
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#define AXP192_LDO234_DC23_CTL (0x12)
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#define AXP192_LDO3OUT_VOL (0x29)
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#define AXP192_LDO3_ON_BIT (1 << 3)
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void board_init(void)
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{
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#if MODULE_ESP32_TTGO_T_BEAM_V1_0
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uint8_t reg;
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i2c_acquire(I2C_DEV(0));
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/* enable the LDO3 power control */
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i2c_read_reg(I2C_DEV(0), AXP192_I2C_ADDR, AXP192_LDO234_DC23_CTL, ®, 0);
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reg |= AXP192_LDO3_ON_BIT;
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i2c_write_reg(I2C_DEV(0), AXP192_I2C_ADDR, AXP192_LDO234_DC23_CTL, reg, 0);
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/* set the output voltage to 3V3 */
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i2c_write_reg(I2C_DEV(0), AXP192_I2C_ADDR, AXP192_LDO3OUT_VOL, 0xff, 0);
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i2c_release(I2C_DEV(0));
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#endif
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}
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#ifdef __cplusplus
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} /* end extern "C" */
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#endif
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/** @} */
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