diff options
Diffstat (limited to 'firmware/drivers/audio/cs4398.c')
-rw-r--r-- | firmware/drivers/audio/cs4398.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/firmware/drivers/audio/cs4398.c b/firmware/drivers/audio/cs4398.c new file mode 100644 index 0000000000..35aa99d08c --- /dev/null +++ b/firmware/drivers/audio/cs4398.c @@ -0,0 +1,41 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2016 by Roman Stolyarov + * + * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ + +#include "system.h" +#include "cs4398.h" +#include "config.h" +#include "audio.h" +#include "audiohw.h" +#include "i2c.h" + +void cs4398_write_reg(uint8_t reg, uint8_t val) +{ + unsigned char buf[2] = {reg, val}; + i2c_write(CS4398_I2C_ADDR, (unsigned char *)&buf, 2); +} + +uint8_t cs4398_read_reg(uint8_t reg) +{ + unsigned char buf[2] = {reg, 0xff}; + i2c_write(CS4398_I2C_ADDR, (unsigned char *)&buf[0], 1); + i2c_read(CS4398_I2C_ADDR, (unsigned char *)&buf[1], 1); + return buf[1]; +} |