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qmk_firmware/platforms/chibios/drivers/i2c_master.c
Nick Brassel ff7cc54fc5
Let's see how deep this rabbithole goes..
2024-04-01 16:20:16 +11:00

289 lines
9.3 KiB
C
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// Copyright 2024 Nick Brassel (@tzarc)
// SPDX-License-Identifier: GPL-2.0-or-later
#include <hal.h>
#include "i2c_master.h"
#ifndef I2C_MULTI_BUS
# ifndef I2C1_SCL_PIN
# define I2C1_SCL_PIN B6
# endif
# ifndef I2C1_SDA_PIN
# define I2C1_SDA_PIN B7
# endif
# ifdef USE_I2CV1
# ifndef I2C1_OPMODE
# define I2C1_OPMODE OPMODE_I2C
# endif
# ifndef I2C1_CLOCK_SPEED
# define I2C1_CLOCK_SPEED 100000 /* 400000 */
# endif
# ifndef I2C1_DUTY_CYCLE
# define I2C1_DUTY_CYCLE STD_DUTY_CYCLE /* FAST_DUTY_CYCLE_2 */
# endif
# else
// The default timing values below configures the I2C clock to 400khz assuming a 72Mhz clock
// For more info : https://www.st.com/en/embedded-software/stsw-stm32126.html
# ifndef I2C1_TIMINGR_PRESC
# define I2C1_TIMINGR_PRESC 0U
# endif
# ifndef I2C1_TIMINGR_SCLDEL
# define I2C1_TIMINGR_SCLDEL 7U
# endif
# ifndef I2C1_TIMINGR_SDADEL
# define I2C1_TIMINGR_SDADEL 0U
# endif
# ifndef I2C1_TIMINGR_SCLH
# define I2C1_TIMINGR_SCLH 38U
# endif
# ifndef I2C1_TIMINGR_SCLL
# define I2C1_TIMINGR_SCLL 129U
# endif
# endif
# ifndef I2C_DRIVER
# define I2C_DRIVER I2CD1
# endif
# ifdef USE_GPIOV1
# ifndef I2C1_SCL_PAL_MODE
# define I2C1_SCL_PAL_MODE PAL_MODE_ALTERNATE_OPENDRAIN
# endif
# ifndef I2C1_SDA_PAL_MODE
# define I2C1_SDA_PAL_MODE PAL_MODE_ALTERNATE_OPENDRAIN
# endif
# else
// The default PAL alternate modes are used to signal that the pins are used for I2C
# ifndef I2C1_SCL_PAL_MODE
# define I2C1_SCL_PAL_MODE 4
# endif
# ifndef I2C1_SDA_PAL_MODE
# define I2C1_SDA_PAL_MODE 4
# endif
# endif
# define _I2Cx_DRIVER I2C_DRIVER
# define _I2Cx_SCL_PIN I2C1_SCL_PIN
# define _I2Cx_SDA_PIN I2C1_SDA_PIN
# define _I2Cx_OPMODE I2C1_OPMODE
# define _I2Cx_CLOCK_SPEED I2C1_CLOCK_SPEED
# define _I2Cx_DUTY_CYCLE I2C1_DUTY_CYCLE
# define _I2Cx_TIMINGR_PRESC I2C1_TIMINGR_PRESC
# define _I2Cx_TIMINGR_SCLDEL I2C1_TIMINGR_SCLDEL
# define _I2Cx_TIMINGR_SDADEL I2C1_TIMINGR_SDADEL
# define _I2Cx_TIMINGR_SCLH I2C1_TIMINGR_SCLH
# define _I2Cx_TIMINGR_SCLL I2C1_TIMINGR_SCLL
# define _I2Cx_SCL_PAL_MODE I2C1_SCL_PAL_MODE
# define _I2Cx_SDA_PAL_MODE I2C1_SDA_PAL_MODE
# define _i2cx_config i2cconfig
# define _i2cx_epilogue i2c_epilogue
# define _i2cx_init i2c_init
# define _i2cx_transmit i2c_transmit
# define _i2cx_receive i2c_receive
# define _i2cx_write_register i2c_write_register
# define _i2cx_write_register16 i2c_write_register16
# define _i2cx_read_register i2c_read_register
# define _i2cx_read_register16 i2c_read_register16
# define _i2cx_ping_address i2c_ping_address
# include "i2c_master.impl.c"
#else // I2C_MULTI_BUS
// Ensure we aren't overriding I2C APIs with a default bus when we #include the impl
# undef i2c_init
# undef i2c_transmit
# undef i2c_receive
# undef i2c_write_register
# undef i2c_write_register16
# undef i2c_read_register
# undef i2c_read_register16
# undef i2c_ping_address
# ifdef HAS_I2C0
# undef _i2cx_config
# undef _i2cx_epilogue
# undef _i2cx_init
# undef _i2cx_transmit
# undef _i2cx_receive
# undef _i2cx_write_register
# undef _i2cx_write_register16
# undef _i2cx_read_register
# undef _i2cx_read_register16
# undef _i2cx_ping_address
# define _i2cx_config i2c0config
# define _i2cx_epilogue i2c0_epilogue
# define _i2cx_init i2c0_init
# define _i2cx_transmit i2c0_transmit
# define _i2cx_receive i2c0_receive
# define _i2cx_write_register i2c0_write_register
# define _i2cx_write_register16 i2c0_write_register16
# define _i2cx_read_register i2c0_read_register
# define _i2cx_read_register16 i2c0_read_register16
# define _i2cx_ping_address i2c0_ping_address
# undef _I2Cx_DRIVER
# undef _I2Cx_SCL_PIN
# undef _I2Cx_SDA_PIN
# undef _I2Cx_OPMODE
# undef _I2Cx_CLOCK_SPEED
# undef _I2Cx_DUTY_CYCLE
# undef _I2Cx_TIMINGR_PRESC
# undef _I2Cx_TIMINGR_SCLDEL
# undef _I2Cx_TIMINGR_SDADEL
# undef _I2Cx_TIMINGR_SCLH
# undef _I2Cx_TIMINGR_SCLL
# undef _I2Cx_SCL_PAL_MODE
# undef _I2Cx_SDA_PAL_MODE
# define _I2Cx_DRIVER I2CD0
# define _I2Cx_SCL_PIN I2C0_SCL_PIN
# define _I2Cx_SDA_PIN I2C0_SDA_PIN
# define _I2Cx_OPMODE I2C0_OPMODE
# define _I2Cx_CLOCK_SPEED I2C0_CLOCK_SPEED
# define _I2Cx_DUTY_CYCLE I2C0_DUTY_CYCLE
# define _I2Cx_TIMINGR_PRESC I2C0_TIMINGR_PRESC
# define _I2Cx_TIMINGR_SCLDEL I2C0_TIMINGR_SCLDEL
# define _I2Cx_TIMINGR_SDADEL I2C0_TIMINGR_SDADEL
# define _I2Cx_TIMINGR_SCLH I2C0_TIMINGR_SCLH
# define _I2Cx_TIMINGR_SCLL I2C0_TIMINGR_SCLL
# define _I2Cx_SCL_PAL_MODE I2C0_SCL_PAL_MODE
# define _I2Cx_SDA_PAL_MODE I2C0_SDA_PAL_MODE
# include "i2c_master.impl.c"
# endif // HAS_I2C0
# ifdef HAS_I2C1
# undef _I2Cx_DRIVER
# undef _i2cx_config
# undef _i2cx_epilogue
# undef _i2cx_init
# undef _i2cx_transmit
# undef _i2cx_receive
# undef _i2cx_write_register
# undef _i2cx_write_register16
# undef _i2cx_read_register
# undef _i2cx_read_register16
# undef _i2cx_ping_address
# define _i2cx_config i2c1config
# define _i2cx_epilogue i2c1_epilogue
# define _i2cx_init i2c1_init
# define _i2cx_transmit i2c1_transmit
# define _i2cx_receive i2c1_receive
# define _i2cx_write_register i2c1_write_register
# define _i2cx_write_register16 i2c1_write_register16
# define _i2cx_read_register i2c1_read_register
# define _i2cx_read_register16 i2c1_read_register16
# define _i2cx_ping_address i2c1_ping_address
# undef _I2Cx_DRIVER
# undef _I2Cx_SCL_PIN
# undef _I2Cx_SDA_PIN
# undef _I2Cx_OPMODE
# undef _I2Cx_CLOCK_SPEED
# undef _I2Cx_DUTY_CYCLE
# undef _I2Cx_TIMINGR_PRESC
# undef _I2Cx_TIMINGR_SCLDEL
# undef _I2Cx_TIMINGR_SDADEL
# undef _I2Cx_TIMINGR_SCLH
# undef _I2Cx_TIMINGR_SCLL
# undef _I2Cx_SCL_PAL_MODE
# undef _I2Cx_SDA_PAL_MODE
# define _I2Cx_DRIVER I2CD1
# define _I2Cx_SCL_PIN I2C1_SCL_PIN
# define _I2Cx_SDA_PIN I2C1_SDA_PIN
# define _I2Cx_OPMODE I2C1_OPMODE
# define _I2Cx_CLOCK_SPEED I2C1_CLOCK_SPEED
# define _I2Cx_DUTY_CYCLE I2C1_DUTY_CYCLE
# define _I2Cx_TIMINGR_PRESC I2C1_TIMINGR_PRESC
# define _I2Cx_TIMINGR_SCLDEL I2C1_TIMINGR_SCLDEL
# define _I2Cx_TIMINGR_SDADEL I2C1_TIMINGR_SDADEL
# define _I2Cx_TIMINGR_SCLH I2C1_TIMINGR_SCLH
# define _I2Cx_TIMINGR_SCLL I2C1_TIMINGR_SCLL
# define _I2Cx_SCL_PAL_MODE I2C1_SCL_PAL_MODE
# define _I2Cx_SDA_PAL_MODE I2C1_SDA_PAL_MODE
# include "i2c_master.impl.c"
# endif // HAS_I2C1
# ifdef HAS_I2C2
# undef _I2Cx_DRIVER
# undef _i2cx_config
# undef _i2cx_epilogue
# undef _i2cx_init
# undef _i2cx_transmit
# undef _i2cx_receive
# undef _i2cx_write_register
# undef _i2cx_write_register16
# undef _i2cx_read_register
# undef _i2cx_read_register16
# undef _i2cx_ping_address
# define _i2cx_config i2c2config
# define _i2cx_epilogue i2c2_epilogue
# define _i2cx_init i2c2_init
# define _i2cx_transmit i2c2_transmit
# define _i2cx_receive i2c2_receive
# define _i2cx_write_register i2c2_write_register
# define _i2cx_write_register16 i2c2_write_register16
# define _i2cx_read_register i2c2_read_register
# define _i2cx_read_register16 i2c2_read_register16
# define _i2cx_ping_address i2c2_ping_address
# undef _I2Cx_DRIVER
# undef _I2Cx_SCL_PIN
# undef _I2Cx_SDA_PIN
# undef _I2Cx_OPMODE
# undef _I2Cx_CLOCK_SPEED
# undef _I2Cx_DUTY_CYCLE
# undef _I2Cx_TIMINGR_PRESC
# undef _I2Cx_TIMINGR_SCLDEL
# undef _I2Cx_TIMINGR_SDADEL
# undef _I2Cx_TIMINGR_SCLH
# undef _I2Cx_TIMINGR_SCLL
# undef _I2Cx_SCL_PAL_MODE
# undef _I2Cx_SDA_PAL_MODE
# define _I2Cx_DRIVER I2CD2
# define _I2Cx_SCL_PIN I2C2_SCL_PIN
# define _I2Cx_SDA_PIN I2C2_SDA_PIN
# define _I2Cx_OPMODE I2C2_OPMODE
# define _I2Cx_CLOCK_SPEED I2C2_CLOCK_SPEED
# define _I2Cx_DUTY_CYCLE I2C2_DUTY_CYCLE
# define _I2Cx_TIMINGR_PRESC I2C2_TIMINGR_PRESC
# define _I2Cx_TIMINGR_SCLDEL I2C2_TIMINGR_SCLDEL
# define _I2Cx_TIMINGR_SDADEL I2C2_TIMINGR_SDADEL
# define _I2Cx_TIMINGR_SCLH I2C2_TIMINGR_SCLH
# define _I2Cx_TIMINGR_SCLL I2C2_TIMINGR_SCLL
# define _I2Cx_SCL_PAL_MODE I2C2_SCL_PAL_MODE
# define _I2Cx_SDA_PAL_MODE I2C2_SDA_PAL_MODE
# include "i2c_master.impl.c"
# endif // HAS_I2C2
void i2c_init(void) {
# ifdef HAS_I2C0
i2c0_init();
# endif // HAS_I2C0
# ifdef HAS_I2C1
i2c1_init();
# endif // HAS_I2C1
# ifdef HAS_I2C2
i2c2_init();
# endif // HAS_I2C2
}
#endif // I2C_MULTI_BUS
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